WO2012136561A1

WO2012136561A1 - Water treatment plant

Info

Publication number: WO2012136561A1
Application number: PCT/EP2012/055633
Authority: WO
Inventors: Martin Mayr
Original assignee: E. Hawle Armaturenwerke Gmbh
Priority date: 2011-04-05
Filing date: 2012-03-29
Publication date: 2012-10-11
Also published as: AT511426B1; AT511426A1

Abstract

The invention relates to a device (1) for treating a liquid having at least one feed line (2), at least one filter unit (3), at least one outlet line (4) and a central control unit (5), wherein the filter unit (3) comprises a backwash filter (7) that is controllable by the control unit (5) and is connectable to a backwash line (6), and also to the control unit (5) for such a device, and to a method for controlling a device for treating a liquid.

Description

Water treatment plant

The invention relates to a device for treating a liquid with at least one supply line, at least one filter unit, at least one discharge line and a central control unit.

Devices for the treatment of liquids, in particular

Water treatment plants for the production of drinking water or

Service water is known from the prior art. DE 38 28 026 A1, for example, shows a device for hygienic treatment of liquids, especially drinking water, with a supply line, a

Filter unit, and a derivative. The device further comprises a UV radiation source in a tubular body of UV rays

passing material, which extends through one or more successively arranged in the direction of flow of the water areas of the device through which the water to be treated flows through and

Activated carbon filter are separated. The water to be treated is therefore exposed before entering the activated carbon filter each germicidal UV radiation, which eliminates the risk of excessive germ growth in the field of activated carbon filter.

DE 4 008 458 A1 shows a method and a device for

Treatment of water in a tapping station. The construction relates to a method and a device in which pre-purified in a filter section pipe water to build a transmembrane

Pressure difference is fed to a reverse osmosis module. The am

Permeate stream exiting permeate outlet is passed via a UV sterilization path in a non-pressurized storage tank.

From there, the pure water can be removed with the help of a feed pump at the tap. Furthermore, from DE 10 2005 007 395 A1 a mobile

Water treatment system known, which has a central

Control unit has. Furthermore, water treatment plants for the treatment of water for agriculture, snowmaking systems, mining, disaster relief, drinking water supplies in the

Municipal area, as well as island solutions for drinking water supplies, especially in remote areas known.

Depending on the degree of pollution, type of pollution, desired throughput, etc. are different methods and equipment for

Water treatment used. For example, until now large plants were required for the municipal drinking water supply in order to achieve the required throughput. Such systems are usually arranged stationary due to their size.

However, new developments in the field of filter technology have also made it possible to achieve higher throughput in small quantities

To achieve water treatment plants. This favors the possibility of mobile water treatment plants for e.g. Provide disaster relief, but with a throughput that is usually handled only stationary water treatment plants.

The state of the art systems are usually specialized in a few applications. There are, for example

Water treatment plants for agriculture, for

Snow-making systems, for drinking water, for disaster relief, etc. Due to the different configuration of the different systems, the quantities of each individual system are very low. Most are

Water treatment plants Custom-made products specializing in the respective field of application. Due to these customizations, the costs are more so

Processing plants very high. The control units are usually set up in a decentralized manner, that is to say that a separate control is set up for each module and the coordination of the components takes place anew at each new installation.

Objects of the present invention are to overcome the disadvantages of the prior art constructions, a modular design

To provide water treatment plant, which has compact dimensions and thus both stationary and mobile can be used, which can be used for a variety of different applications that a central

A control unit that is easy to commission, designed for a wide range of flow rates, with safety features designed to prevent contamination of drinking water, improve plant operation and ensure component protection, and that are produced in high volumes by the flexible applications can and therefore brings cost advantages.

The objects of the invention are achieved in that the

Filter unit one controllable by the control unit, with a

Backwash includes connectable backwash filter. The use of a backwash filter, which can be backwashed during operation and in particular automatically allows for the first time the realization of a modular water treatment plant, which has compact dimensions and can be operated virtually continuously over a long period of time. Thus, such a system for the first time not only for emergency operation, but also for prolonged use and even the normal operation of water treatment can be used. Accordingly, numerous economic advantages open up by the inventive design of the water treatment plant.

The backwash filter according to the invention can be any desired backwashable water filter. Essential for the invention is the Property to be backwashed during operation by

Redirecting the fluid stream the accumulated impurities - the so-called filter cake - are dissolved out of the filter material and thus the filter material is cleaned. A regular change of the

Reter Materia, which inevitably involves a stop to the treatment plant, is therefore no longer necessary.

In particular, the backwash filter according to the invention can

comprise shell-shaped filter body, which is rotatable relative to the filter housing, wherein the filter body is always cleaned during the backwashing process only over a partial area, as described for example in AT 504 361 B1. Such backflushing require a very low

Flush volume and work even at low pressure difference between detergent inflow and detergent drain.

According to the invention it is provided that in the flow direction in front of the

Filter unit, a pre-filter pressure sensor and in the flow direction after the Fiitereinheit a Nachfilterdrucksensor may be provided, the

Assessment of the degree of soiling of the backwash filter with the

Control unit can be connected. This allows the control unit to automatically judge if the filter is dirty and one

Request or trigger backwash process.

Furthermore, it is provided that the filter unit can comprise an electric motor which can be activated by the control unit for carrying out the backwashing process. For carrying out the backwashing process, when the inventive backwashing process is used, it must be set in rotation, which can be done automatically by the electric motor.

To carry out the backwashing process, it may be provided according to the invention that the fiiter unit controls a backwashing process that can be triggered by the control unit and is connected or connectable to a backwash line includes introductory backwash valve. Furthermore, according to the invention

provided that in the flow direction after the filter unit at least one controllable by the control unit disinfecting radiation source can be provided. This can preferably be designed as a UV reactor. In particular, it can be provided that it is in the

Straumfungsquelle to a plant for the production of ultraviolet radiation with low-pressure mercury lamps according to ÖNORM M 5873-1 D acts.

For measuring the degree of contamination, the radiation source may comprise at least one photosensor connectable or connected to the control unit. From the electrical measurement data of the photosensor, the control unit can draw conclusions about the purity of the water or the liquid to be treated.

Furthermore, according to the invention it is provided that at least one inoculation connection for the introduction of in the direction of flow after the filter unit

chemical substances may be appropriate. This may in particular be chlorine, but also other chemicals such as chlorine dioxide or Silbehonen that are required for the treatment of the liquid. For the purpose of mixing the chemicals introduced, it may be provided that a static mixer is located in the flow direction downstream of the inoculation connection.

An essential security problem with an inventive

Processing plant is that any polluted or contaminated water may not get into the drain (the pure water). This is particularly problematic in the event of a power failure. For this purpose, the invention provides that a provided with a normally open safety valve fault line can be provided, and the derivative can be provided with a normally closed safety valve. In order for the safety valves also to respond if the treated water is not present as of now, it is provided according to the invention that the safety valves can be controlled by the control unit. To assess the quality of the treatment plant may further

According to the invention, the device comprises further sensors measuring the pressure, the flow and / or the temperature. However, other physical parameters can also be recorded by corresponding sensors. According to the invention, the sensors used can be connectable to the control unit in order to ensure that the measured values can be stored, processed, sent, etc. in the flow direction after the filter unit can further with the

Control unit connectable, serving as an expansion vessel bladder memory be provided. To regulate the operating pressure of the system may further be provided in the flow direction in front of the filter unit controllable by the control unit control valve. Such a thing

Control valve according to the invention can have an automatic ventilation, whereby the automatic commissioning of the system is significantly simplified. For this purpose, the control valve may have an integrated venting function. This can be achieved that the air in the filling of the valve (or even air bubbles which reach the Regelventii in operation) can escape into the atmosphere. As a result, the complex manual venting is superfluous and it is fully automatically ensured that the control valve can work properly.

For further automation of the system, it is further provided according to the invention that an input pressure sensor which can be connected to the control unit can be provided in the flow direction upstream of the filter unit. This can supply the input pressure as a measured value to the control unit. Furthermore, in the flow direction in front of the fiter unit one of the

Control unit controllable slide be provided, as well as in Flow direction upstream of the filter unit to be provided as a SchmutzTanger serving pre-filter.

The pre-filter can also be one or more coarsely meshed

(Mesh size 2 - 0.5mm) backwash filter (mangle filter, candle filter,

Cyclone filters, separators, decanters, etc). For certain cases, it may be necessary to precede the prefilter unit with further processing steps such as flocculation, precipitation, flotation tanks, oil separators or adsorbents (for example activated carbon). For the purpose of assessing the quality of the treatment, one or more may be used in the device

Be provided sampling points. In particular, the invention provides that in the flow direction after the filter unit a

Bypass module for connecting external analysis devices can be provided.

In this by-pass module according to the invention, one or more special filtration and separation techniques for solutes and

Kieinstpartike! Such as activated carbon filters (adsorption), microfilters, ultrafilters, nanofilters, electrodialysis or reverse osmosis systems.

Furthermore, it is also possible to provide technical systems, such as oxidation, deacidification, softening, decarbonization, desalination, selective exchanger and ozone systems, in the bypass module.

Furthermore, the device may comprise one or more drain lines for emptying the system. At least one manual and / or automatically operable slide can be provided in a main line, in an error line, in a backwash line and / or in an emptying line.

The above-mentioned sensors may in particular

current controlled sensors, preferably with a current range of 4 to 20mA, act, and the control unit may be designed for wire break detection, whereby the robustness of the system is increased. For energy supply, a self-sufficient energy source, preferably an emergency generator may be provided. The system can also be mounted in a container or on a truck, truck, trailer, or

be carried out the same. To use the flow energy of

Medium in the system can be arranged in the device generators with turbines, water wheels or the like. Furthermore, a flood sensor connected or connectable to the control unit can be provided.

The invention further relates to a control unit for controlling a device according to the invention for the treatment of a liquid as described above. Such a control unit may in particular be remotely controllable and comprise interfaces for the connection of fully automatic samplers and / or for the control of a CIP cleaning. The control unit can be a user interface, in particular in the form of a touch screen, a data processing unit, a data memory, a

Radio transmission unit, and an I / O unit connected to terminals.

According to the invention it can be provided that the control unit has a network connection, a USB connection and / or a

Memory card connector includes. Furthermore, a GSM moduf for sending and / or receiving electronic messages or

Status avoidance, in particular SMS messages, be provided. In addition, the invention provides that the control unit is connected to additional analysis sensors for measuring the transmission, turbidity, the content of ammonium, nitrate, phosphate, chlorine, oxygen, ozone, the redox potential, the pH, the hardness, and / or Partikeisensoren can be, and / or other interfaces for connecting external analyzers are provided. For certain fields of application, it may also be advantageous if the control unit can be connected to weather sensors for measuring the precipitation, the wind force, the wind direction, the temperature or the like. Furthermore, it can be provided that the control unit comprises a Stützbatiehe.Die control unit may further comprise a security module for controlling the operating condition of the system. For example, due to the safety module in the case of faults, all such as power failure,

Flooding or the like a controlled shutdown of the system can be initiated.

The control unit may further comprise an access control module for securing the authorized operation of the system. This can in particular grant authorized persons access to the system and at

Unauthorized access to the system give a warning, send an SMS, or make an automatic call.

The control unit may further comprise a configuration module, which can provide the correct interpretation of the input signals, and in particular the definition of automatic running processes includes (lead time for UV reactor, purge frequencies and flush settings for the backwash filter, definition of rule management, etc.).

Furthermore, the control unit can include an automatic module for the fully automatic operation of the system (daily programs, weekly programs, etc.). It can be provided in the context of this fully automatic operation that system parameters can be adapted by SMS.

Of course, a manual operation of the system can be provided in the individual assemblies (components) of the system (but not the backwash valve itself) are controlled manually and directly to the system. The control unit according to the invention can further be designed for the control of several system modules (also with different requirements, such as water delivery, pressure increase, special treatment methods) in the immediate vicinity and designed for future expansion.

The water treatment plant according to the invention can be used before or after a water tank (high tank, water tower, etc). It can be used in emergency situations after a water reservoir via a bypass line between two hydrants (Oberfiur and underfloor) or a temporary tapping of the water pipe.

The treatment plant according to the invention is intended both for the preparation of drinking water, as well as for the preparation of service water. It can also be made from nearby surface waters (lakes, rivers, streams, etc) or temporary wells via a hydrant or a temporary tapping of the aqueduct into an existing one

Supply network or in a crisis (disaster or war) in mobile water storage and / or water tanker vehicles are fed.

The water treatment plant can also be used before snow-making systems in ski resorts or even in agriculture and forestry

Irrigation systems are used. Especially at the

Drip irrigation obstructs particulate matter in the media's orifices of the irrigation system.

The plant can also be used for the treatment of drinking water for animals, treatment and rolling clarification of bath water and the treatment of municipal and industrial wastewater. In the industrial sector, the processing plant for the

Process water treatment in food production (beverages, dairy products, shift operations, etc.), in mining, in power plant operation and used in offshore applications for the treatment of Baliastwasser. The treatment plant according to the invention can be provided in particular both for stationary, as well as for mobile use.

The invention further relates to a method for controlling a device for treating a liquid with a filter unit comprising a backwash filter and a backwash valve and a control unit, the method comprising the following steps:

a. Measurement of the operating pressure and / or the flow rate of the system and if threshold values are exceeded or undershot. Implementation of warning and / or corrective measures;

b. Measuring the pressure difference before and after the filter unit and performing a backwashing process when a preset fidelity value is exceeded;

c. Measurement of the purity of the treated liquid and, if a preset threshold value is exceeded, implementation of remedial and / or corrective measures; d. Measurement, storage and / or electronic transmission of measured variables such as pressure, temperature, and / or flow and status messages regarding the purity of the treated water and / or the backwashing of the filter unit.

Each of said steps a) - d) can be further developed in the inventive method in greater detail.

In step a) corrective measures can be initiated by a rule management, wherein

- the operating pressure and / or the flow rate of the system are measured; depending on a preset daily program, the operating pressure and / or the flow rate of the system are adapted to a preset target value; and

- In particular, the operating pressure of the system is reduced when no flow is needed.

Furthermore, according to the invention, it can be provided that the utilization of the installation is recorded, from which the future utilization is forecast, and one and the target values of pressure and / or flow are automatically adapted to the predicted utilization.

The step a) may further comprise the following steps:

- Measurement of the operating pressure of the system by means of one or

a plurality of pressure sensors connected to the control unit; Comparing the pressure with a predetermined target value;

- in the presence of too high pressure control of a control valve to reduce the inlet pressure;

- In the presence of too low pressure control of a control valve to increase the inlet pressure.

It is also provided according to the invention that the method in step a) comprises the following steps:

- measuring the flow rate of the system through one or more flow sensors connected to the control unit;

- Comparison of the flow with a given target value;

- in the presence of excessive flow, control of a control valve to reduce the flow;

- In the presence of too low flow control

a control valve to increase the flow.

In particular, the method in step b) can comprise the following steps:

Measurement of hydrostatic pressure before and after

Filter unit; - calculation of the differential pressure;

- When a differential pressure threshold is exceeded initiating a rewind operation by opening the backwash valve and discharging the backwash liquid into a drain;

Closing the backwash valve after backwashing,

The method may further comprise in step c) the following steps:

- Measurement of the quality of the treated liquid by

Particle counters, photosensors, or the like;

- in the presence of excessive pollution or

Contamination activation of safety valves for

Closing the clean liquid drain and draining the dirty liquid into a drain.

A major problem of conventional treatment plants is that the supply networks often damaged by overaging, in building arches and by pressure shocks during operation or through

Environmental influences (earthquakes, corrosion by soil chemistry, etc.) in

Affected. The water treatment plant must treat the water with a lot of energy (power consumption) and / or use of chemicals and make it available under pressure. This expensive water then seeps through the leaks in the supply networks unused in the ground.

For this reason, it may be provided in step a) that pressure and Durchfiuss are always automatically lowered by the control valve when no water is needed. This reduces the leakage and at the same time increases the service life of the supply network. It can be assumed that a given consumption plan (certain daily programs or weekly programs). In particular, it is provided that these programs can be activated, changed or changed by SMS command. A daily program can be subdivided in particular into several daily sections. In each section of the day, the control modes (pressure, flow), the considered sensor values (operating pressure, pre-filter pressure, post-filter pressure, flow), and the target values can be defined.

The rule management processes the defined daily sections and moves to the specified control value.

This allows leakage losses in the supply network to be reduced at certain times. (Example: At night, where water consumption is almost zero.)

According to the invention, it is further provided that the consumption is recorded and the program can control itself within a predetermined framework (artificial intelligence) in order to further reduce the leakage losses. In addition, in a method according to the invention, the

Exceeding or dropping below thresholds and limits of pressure, temperature, flow, rinsing cycles, UV irradiations, and other quantities detected and displayed to the user via SMS or on a user interface of the control unit.

Disturbances of sensors or actuators, in particular line breakage, can be detected and an SMS message sent and / or a warning displayed on a user interface of the control unit.

Furthermore, it can be provided that a readjustment of

System parameters can be sent via SMS. In case of power failure, a

Warning sent by SMS message. Upon detection of a

Flooding by a flood sensor can also be sent an SMS message and / or a warning will be displayed.

Furthermore, it can be provided according to the invention that status messages are sent by SMS at regular time intervals. The

Besirahlungszeit a disinfecting StrahlungsqueHe may depend on the measured liquid quality can be adjusted by command on the user interface or by SMS.

The invention further relates to a computer program for carrying out the method according to the invention, and to a computer program product having such a computer program.

Further features according to the invention can be taken from the claims, the description and the figures.

The subject invention will now be described by way of example

Embodiments described in more detail. Show it

Fig. V. a schematic block diagram of a first embodiment of the device according to the invention;

2 shows a schematic block diagram of a second embodiment of the device according to the invention;

3 shows a schematic block diagram of a third embodiment of the device according to the invention.

4 shows a schematic block diagram of the invention

Control unit for controlling a water treatment plant;

Fig. 5: a schematic flow diagram m of an inventive

Method for controlling a water treatment plant

Fig. 1 shows the schematic representation of a first embodiment of the device 1 according to the invention, which in this case as

Water treatment plant is running. The device 1 has a supply line 2 for the water to be purified, a filter unit 3, and a Derivation 4. The direction of flow of the water is indicated by arrows. The device further includes an electronic control unit 5, which is connected to all essential components of the device 1. The

Supply line 2 is connected directly to the main line 28 of the system.

The filter unit 3 comprises a backwash filter 7 and is connected to the control unit 5. Furthermore, a backwash line 6, which opens into a drain 38, is provided for the purpose of diverting the filter cake formed during the filtration in the backwash filter 7. The rinsing process itself can be done manually or automatically. For this purpose is in

Flow direction in front of the filter unit 3, a pre-filter pressure sensor 8, and provided in the flow direction after the filter unit 3, a Nachfilterdrucksensor 9. Both pressure sensors 8, 9 are connected to the control unit 5. When the pressure difference between these two pressure sensors exceeds a predetermined threshold, the purge of the

Backwash filter 7 triggered. For this purpose, the fiter unit 3 comprises a drive 32 that can be activated by the control unit 5. This drive unit is preferably designed as an electric motor.

In the flow direction after the fiter unit 3 is a

Desinifizierende radiation source in the form of a UV reactor 10. This is also controlled by the control unit 5 and has a

Detection unit in the form of a photosensor 1 1, which measures the opacity of the processed medium and passes the determined value to the control unit 5. Depending on this measured value, the control unit 5 can control the UV reactor 10 or provide information about the functionality of the system and the quality of the filtered water.

Furthermore, in the direction of flow downstream of the UV reactor, there is provided an inoculation port 12, via which certain chemical substances or other materials can be added to the treated water. The dosage of the supplied substances can be done manually or by the central Control unit 5 are controlled or regulated. In particular, a sampling point 25, which is arranged downstream of the injection port, can be used to form a closed loop.

The entire device is designed to be operated automatically by the control unit 5.

Fig. 2 shows a further embodiment of the invention

Contraption. In this embodiment, a normally open safety valve 13, a branch 37 to a fault line 14 and a normally closed safety valve 15 is provided in the flow direction directly in front of the discharge line 4. The discharge line opens into the backwash line 6.

Both safety valves 13, 15 are controlled by the control unit 5. The flow direction of the medium is again indicated by arrows.

By the safety valves 13, 15 according to the invention, the

Control unit in the event that detected in the system polluted water or another incident is detected, the derivative 4 on the

Safety valve 15 is closed and the fault line 14 via the

Safety valve 13 are opened, whereby the contaminated water can flow through the branch 37 into the fault line 14. Likewise, in the event of an interruption of the power supply, the normally-open safety valve 13 is opened, and the normally-closed safety valve 15 is closed, whereby the water in the device is also conducted into the fault line 14. The fault line 14 opens into the backwash line 6, whereby the contaminated medium via the drain 38 into the sewer, a collection point or in the environment can be derived.

Furthermore, the device according to the invention comprises in this

Ausführungsbeispiei a static mixer 16, which is mounted in the flow direction after the injection port 2 and for a thorough mixing of optionally supplied substances. Since in piping usually constant flow conditions prevail, which in particular in laminar flows poor mixing of the medium along the

Flow cross-section with it, there is a risk that the introduced substances are not evenly distributed over the entire pipe cross-section, but for example, have an increased concentration in the middle of the tube in the highest flow rate. In order to break the constant velocity profile and to favor the mixing of the water, the static mixer 16 is provided.

Fig. 3 shows a further alternative embodiment of the device 1 according to the invention in the form of a water treatment plant. The contaminated water enters the main line 28 of the system at the supply line 2. The supply line 2 may preferably be provided with a pipe connection device. This pipe connection device is designed for example as a bayonet lock, flange, or the like. Furthermore, a slider can be provided in the region of the feed line 2. After this

Water inlet follows in the flow direction of the inlet pressure sensor 22. This measures the pressure of the medium and forwards the measured values to the central control unit 5.

After the inlet pressure sensor 22, the water passes through a slide 23. This slide is connected via a control line to the control unit 5. The spool of the slider 23 is motorized and can be operated by the control unit 5.

About the slider 23 can thus by the control unit 5 of

Input mass flow and thus the pressure and flow conditions are controlled or controlled throughout the system. After the slider 23, a check valve and a pre-filter 24 is arranged. This prefilter 24 serves inter alia the component protection, in particular the protection of downstream components. The prefilter 24 comprises in the illustrated embodiment a so-called strainer. This corresponds to a coarse filter that filters out water contaminants, such as solids with a size of 2 mm and more. Further, the prefilter 24 may also include oil separators as well as cyclones.

Downstream is in the system, the control valve 21st This is set up to regulate the pressure and flow of system fluid. Due to the variety of applications, the

Pressure conditions and the flow conditions in the supply line 2 vary greatly. For example, if a pump to promote

Groundwater provided on the supply line 2, so this pump generates when starting shocks that are compensated by the control valve 21. Even when water stores it comes when opening the slide to shocks whose pressure peaks must be compensated to protect the downstream components. The control valve 21 is therefore used in particular to reduce the inlet pressure to the operating pressure of the system.

The control valve 21 is preferably designed self-venting. In the initial start-up, in which the pipe system, in particular the main line 28, is filled with air and only when the water flows with the

Medium fills, therefore, the air, which catches in the region of the control valve 21 in cavities, automatically dissipated. To do this automatically

To perform the control valve 21 is connected to the central control unit 5.

Downstream of the flow direction, a pre-filter pressure sensor 8 is provided. This pressure sensor is also connected to the central control unit 5 and, in combination with the input pressure sensor 22 and the differential pressure calculated therefrom, allows conclusions to be drawn about the flow conditions in FIG Area between the pressure sensors 8 and 22 to. After this

Prefilter filter 8, a filter unit 3 is arranged.

The filter unit 3 is arranged to remove suspended particles from the

System medium, especially the contaminated water to filter. For this purpose, different filter systems can be used for different applications. Preferably, an automatic backwash filter 7 is used. For example, jacket filters can also be used. To perform the automatic backwashing a controllable by the control unit 5 drive 32 is provided. Furthermore, the filter unit 3 has a ventilation valve 36.

On the filter unit 3, a slide 23 is mounted for emptying the filter unit, wherein the drain line 41 opens into the fault line 14 and, subsequently, in the drain 38.

In the filter unit 3, a backwash valve 27 is provided, which is controlled by the control unit 5. The backwash valve 27 connects with activated backwashing the backwash line 6 with the bottom

described error line 14 and subsequently flows into the sequence 38. Before the Abiauf another manual slide 23 is provided.

The backwashing process can take place during the filtering process by activation of the backwash valve 27 by the control unit 5.

This sensor, which is also connected to the central control device 5, in combination with the prefilter pressure sensor 8, in particular on the calculated pressure difference, conclusions about the flow conditions in the range of the filter unit 3 to. If the differential pressure rises above a certain level, the backwashing of the filter unit 3 is initiated by the central controller 5, for example. In general, it comes at a strong Contamination of the filter to a pressure drop to or in the filter unit 3, since the water can not pass through the filter pores. The differential pressure of the two pressure sensors before and after the filter unit 3 is thus, inter alia, a measure of the contamination of the filter.

Subsequently, a bladder accumulator 20 may be provided. This

Bladder accumulator is used to equalize the pressure and to compensate for pressure or flow fluctuations. The bladder accumulator 20 is also connected to the central control device 5. Furthermore, 3 sampling points 25 can be provided in the area before and after the filter unit. These sampling points 25 are used, for example, the branching of a partial flow for feeding into an analyzer. This analyzer can also be connected to the central controller and leaves

For example, conclusions about the quality of the main filtering.

After these components, a non-return valve 29 is arranged. The check valve 29 is a bypass module 26 downstream.

The bypass module 26 is used for looping additional modules into the water treatment system, in particular into the main line 28. For this purpose, an additional module to the bypass ports 30 and 31

connected. In order to guide the flow of the medium to the additional module, the bypass slide 33 is subsequently closed and the two bypass slides 34 and 35 are opened. Of course, it is also possible to use controlled valves or other devices instead of valves. As additional modules, for example, devices for ultrafiltration, activated carbon filters, chemical treatment devices, desalination modules, etc. are used.

Also, the additional module used can be connected to the central control unit 5 and controlled by this or regulated. The bypass module 26 is in turn in the flow direction a

Subsequent to sampling point 25. This serves to check the quality of cleaning after the bypass module 26.

Subsequent to the components mentioned, a UV reactor 10 is arranged. This serves to disinfect the water, in particular the harmlessness of viruses and bacteria, which are in the medium (water). The UV reactor 10 and the photosensor 11 for measuring the opacity of the medium disposed therein are connected to the central control unit 5. Furthermore, the UV reactor 10 has a slide 23 and a drain line 41, which in the bottom

described error line 14 and finally in the outlet 38 opens. The UV reactor 10 can be operated by the control unit 5 via its own control line.

The UV reactor 10 is arranged downstream in the flow direction in this

A ventilation and venting valve 36. This is used for venting when first filling the system with the medium, as well as for venting when draining the medium from the processing plant. Downstream of the UV reactor 10 is another sampling point 25.

Located downstream of the main line in the flow direction are a pressure sensor 17, a flow sensor 18 and a

Temperature sensor 19. Furthermore, in this area also sensors, such as particle counter, opacity meter, and / or chemical

Anaiysevorrichtungen, which can also serve to control the filter unit, the UV reactor or the vaccine port, be provided. The sensors 17, 18, 19 and the other enumerated sensors are connected to the central control unit 5.

Downstream of the sensors 17, 18, 19 there is a static mixer 16. This serves to mix the flowing medium. this downstream there is again a sampling point 25 and a branch 37, which branches off a fault line 14 from the main line 28. The branch 37 is located downstream in the

Main water line 28 a safety valve 15, which is designed as open / close valve with check valve. This is connected to the central control unit 5 and can be opened and closed by this.

In the fault line 1 is adjacent to the branch 37, a safety valve 13, which is designed as open / close valve with check valve and is controlled by the central control unit 5. The valve 15 is designed as a normally closed valve and the safety valve 13 as a normally-open valve. These two valves serve to avoid the contamination in the event of a fault in the system, in particular the line of contaminated water to the discharge 4, which is designed as pure water outlet 39. If an error is detected by the central control unit 5, then the safety valve 15 is closed and the safety valve 13 is opened. As a result, the entire water flow of the system is directed into the fault line 14 and further discharged to the environment, a collection point or the sewer.

In this embodiment, the fault line 14 opens in the backwash line 6 of the filter unit 3. However, it should be noted that the backwash line 6 of the fiiter unit 3 can also be arranged separately from the fault line 14.

In the flow direction after the safety valve 15 is along the

Main line 28, a further pressure sensor 17 is provided. This is also connected to the central control unit 5 and serves to determine the output pressure after the filter and cleaning modules. this

downstream of a sampling point 25 may be located, followed by a slide 23, and the derivative 4, as

Pure water outlet 39 is executed. The described device for liquid processing preferably has a space requirement of about 2 m ³ . The compact dimensions allow the use of this or similar systems according to the invention, in containers, trailers, ships, but also fixed in shafts, cellars, smaller houses, etc.

Of course, the device described can also be designed in larger dimensions (for example, DN 300). The system can be mobile, for example in trains, snow groomers, recovery vehicles,

Vehicle superstructures, offshore platforms or the like, or stationary, prepared for existing buildings or precast buildings,

Shaft systems or special containers may be provided.

As power supply either an external power grid or an internal emergency generator 40 may be provided. Especially for use in disaster areas and as an isolated solution in remote areas, energy self-sufficient operation is of great importance. Furthermore, photovoltaic cells can also be provided to generate electricity.

Furthermore, it also corresponds to the idea of the invention to use the inflowing medium for energy production. Thus, for example, the flow energy of the medium, in particular in the treatment of running water or dammed water, are converted by a generator into electricity. The conversion is done by conventional technical means, such as turbines, water wheels or

like.

4 shows a schematic block diagram of the control unit 5 according to the invention for controlling a water treatment plant. The

Control unit has a central data processing unit 43, which via bidirectional connections to a user interface 42, a data memory 44, a radio transmission unit 45 and an I / O unit 46th connected is. The radio transmission unit 45 may be implemented as a GSM unit, WLAN unit or the like and is provided with a

Antenna terminal 47 connected to the Ansch! Uss a corresponding antenna. The user interface 42 is designed in particular as a touch screen. The I / O unit 46 is connected to a plurality of terminals, in particular a plurality of sensor interfaces 48, several

Actuator ports 49 and a memory card connector 50, a USB port 51, and an Ethernet port 52.

The central data processing unit 43 is further provided with a

Security module (53), an access control module (54), a

Configuration module (55), and an automation module (56) connected.

Finally, FIG. 5 is a schematic flow chart of the FIG

inventive method for controlling a

Water treatment plant, which is essentially subdivided into methods for carrying out the rule management (57),

Backwash management (58), purity control (59) and electronic

Data storage and data processing (60).

Of course, the present invention is of course not limited to drinking water, process water, or water in general, but according to the invention extends to any liquid.

LIST OF REFERENCE NUMBERS

1 device

2 supply line

3 fiter unit

4 derivative

5 control unit

6 backwash line

7 backwash filters

8 pre-filter pressure sensor

9 Post-filter pressure sensor

10 UV reactor

11 photosensor

12 vaccination port

13 Normally opening safety valve

14 error line

15 normally closed safety valve

16 static mixer

17 pressure sensor

18 flow sensor

19 temperature sensor

20 bladder storage

21 control valve

22 inlet pressure sensor

23 slides

24 pre-filters

25 sampling point

26 bypass module

27 backwash valve

28 main line

29 back door

30 First bypass connection Second bypass connection

drive

First bypass valve

Second bypass slide

Third bypass slide

Ventilation valve

diversion

ablaut

effluent outlet

emergency generator

drain line

User interface

Data processing unit

data storage

Radio transmission unit

I / O unit

antenna connection

sensors connections

actuators connections

Memory card connector

USB port

Ethernet port

security module

Access control module

configuration module

Automation module

rule management

Rückspülmanagement

purity control

Electronic data storage and data processing

Claims

claims

1. Device (1) for the treatment of a liquid with at least one supply line (2), at least one filter unit (3), at least one discharge (4) and a central control unit (5), characterized in that the filter unit (3) by a the control unit (5) controllable, with a backwash line (6) connectable backwash filter (7}.

2. Apparatus according to claim 1, characterized in that in

Flow direction before the filter unit (3) a pre-filter pressure sensor (8) and in the flow direction after the filter unit (3) a Nachfilterdrucksensor (9) are provided, which are connectable to the control unit (5).

3. Apparatus according to claim 1 or 2, characterized in that one of the control unit (5) controllable drive (32) for carrying out a

Rückspüivorgangs the backwash filter (7) is provided.

4. Device according to one of claims 1 to 3, characterized in that the Fiftereinheit (3) one of the control unit (5) controllable, with a backwash line (6) connected backwash valve! (27).

5. Device according to one of claims 1 to 4, characterized in that in the flow direction in front of the filter unit (3) one of the control unit

controllable, the operating pressure of the system regulating control valve (21) is provided.

6. Device according to one of claims 1 to 5, characterized in that in the flow direction after the filter unit (3) at least one of the

Control unit (5) controllable disinfecting radiation source, preferably a UV reactor (10), is provided.

7. Device according to one of claims 1 to 6, characterized in that one with a normally open, by the control unit (5) controllable safety valve (13) provided fault line (14) is provided, and the Discharge (4) with a normally closed, by c

controllable safety valve (15) is provided.

8. Apparatus according to claim 6 or 7, characterized in that the

Radiation source at least one connected to the control unit (5)

Photo sensor (1 1) for opacity measurement of the liquid comprises.

9. Apparatus according to claim 7, characterized in that, preferably in the flow direction after the filter unit (3), at least one vaccine port (12) is provided.

10. The device according to claim 7, characterized in that the device further, the pressure, the flow and / or the temperature measuring, preferably current-controlled sensors (1, 18, 19), which are preferably connectable to the control unit (5).

11. The device according to claim 7, characterized in that in

Flow direction after the filter unit (3) with the control unit (5) connectable, serving as an expansion tank bladder accumulator (20) is provided.

12. Device according to one of claims 1 to 1 1, characterized in that in the flow direction in front of the filter unit (3), a pre-filter (24) is provided, which in particular in the form of one or more backflush filter with a mesh size of 2 - 0.5 mm executed is

13. Device according to one of claims 1 to 12, characterized in that at least one component of the device is designed self-venting or by the control unit (5) is automatically vented.

14. Device according to one of claims 1 to 13, characterized in that at least one emptying line (41) is provided for emptying the system.

15. Device according to one of claims 1 to 14, dac

for energy supply a self-sufficient energy source, preferably a

Emergency generator (40), a solar system and / or a wind turbine is provided.

16. The apparatus according to claim 15, characterized in that the

Power supply, the flow energy of the medium is used by generators with turbines, water wheels or the like are arranged in the plant.

17. Device according to one of the preceding claims, characterized

characterized in that the control unit (5) is remotely controllable.

18. Device according to one of the preceding claims, characterized

in that the control unit (5) has a user interface (42), a data processing unit (43), a data memory (44), a

Radio transmission unit (45), and one with terminals (47, 48, 49, 50, 51, 52) connectable I / O unit (46).

19. Device according to one of the preceding claims, characterized

characterized in that at the control unit (5) interfaces for connecting fully automatic sampler and / or additional analysis sensors for measuring the transmission, turbidity, the content of ammonium, nitrate, phosphate, chlorine, oxygen, ozone, the redox potential, the pH which are provided hardness, and / or particle sensors.

20. Device according to one of the preceding claims, characterized

characterized in that the control unit (5) comprises a radio transmission unit (45), which is preferably designed as a GSM module for transmitting and / or receiving electronic messages or status messages, in particular SMS messages.

21. Device according to one of the preceding claims, characterized

characterized in that the control unit (5) with weather sensors for measuring the Precipitation, the wind force, the wind direction, de

the like is connectable.

22. Device according to one of the preceding claims, characterized

in that the control unit (5) comprises a safety module (53) controlling the operating state of the system.

23. Device according to one of the preceding claims, characterized

in that the control unit (5) comprises an access control module (54) controlling the authorized access to the installation.

24. Device according to one of the preceding claims, characterized

in that the control unit (5) comprises a configuration module (55) and / or an automation module (56).

25. A method for controlling a device for treating a liquid with a, a backwash filter (7) and a backwash valve (27) comprising

Filter unit (3) and a control unit (5), characterized in that the method comprises the following steps:

a. Measuring the operating pressure and / or the flow rate of the system and when exceeding or falling below pre-set thresholds, carry out warning and / or corrective actions;

b. Measurement of the pressure difference in the flow direction before and after

Filter unit (3) and performing a backwash

Exceeding a threshold value;

c. Measuring the purity of the treated liquid and, if a preset threshold is exceeded, performing warning and / or corrective actions;

d. Measurement, storage and / or electronic transmission of measured variables such as pressure, temperature, and / or flow and

Status messages concerning the purity of the treated liquid and / or the backwashing of the filter unit. A method according to claim 25, characterized gekennzeichi

Corrective measures are initiated by a rule management, wherein

- the operating pressure and / or the flow rate of the system are measured, depending on a preset daily program, the operating pressure and / or the flow rate of the system are adjusted to a preset target value; and

- In particular, the operating pressure of the system is reduced when no flow is needed;

A method according to claim 25 or 26, characterized in that the

Utilization of the plant is recorded, from which the future utilization is forecasted, and one and the target values of pressure and / or flow are automatically adapted to the predicted utilization.

28. The method according to any one of claims 25 to 27, characterized in that the method comprises the following steps in step a):

- Measuring the operating pressure of the system by one or more, with the control unit (5) connected pressure sensors;

- Comparison of the pressure with a target value;

- In the presence of too high pressure control of a control valve (21) to reduce the inlet pressure;

- In the presence of too low pressure control of a control valve (21) to increase the inlet pressure.

29. The method according to any one of claims 25 to 27, characterized in that the method comprises the following steps in step a):

- Measurement of the flow of the system by one or more, connected to the control unit (5) flow sensors;

- Comparison of the flow with a given target value;

- In the presence of excessive flow control of a control valve (21) to reduce the flow; - if the flow is too low

Control valve (21) to increase the flow.

Method according to one of claims 25 to 29, characterized in that the method in step b) comprises the following steps:

- Measurement of the hydrostatic pressure before and after the fitter unit (3);

- calculation of the differential pressure;

- When a Differenzdruckschweliwerts is exceeded initiate a RückspuSvorgangs by opening the backwash valve (27) and discharge of the backwashing liquid in a sequence;

- Close the backwash valve (27) after backwashing.

Method according to one of claims 25 to 30, characterized in that the method in step c) comprises the following steps:

- Measurement of the quality of the treated liquid by particle counter, photosensors, or the like;

- in the presence of excessive contamination or contamination

Activation of safety valves (13, 15) to close the clean liquid drain and drain the polluted liquid into a drain.

32. The method according to any one of claims 25 to 31, characterized in that the exceeding or falling below thresholds and limits of the pressure, the temperature, the flow rate, the rinsing cycles, the UV irradiations, and other variables detected and the user by SMS or be displayed on a user interface of the control unit (5).

33. The method according to any one of claims 25 to 32, characterized in that disturbances of sensors or actuators, in particular line break detected and sent a text message and a warning s.einem

User interface of the control unit (5) are displayed.

34. The method according to any one of claims 25 to 33, dadi

a readjustment of the system parameters by SMS erioigt.

35. The method according to any one of claims 25 to 34, characterized in that in case of power failure or unauthorized access a warning by SMS message is sent.

36. The method according to any one of claims 25 to 35, characterized in that an SMS message is sent upon detection of flooding by a flood sensor and the operating voltage is switched off.

37. The method according to any one of claims 25 to 36, characterized in that at regular intervals status messages are sent by SMS.

38. The method according to any one of claims 25 to 37, characterized in that the irradiation time of a disinfecting radiation source is adjusted depending on the measured liquid purity.

39. Computer program for carrying out the method according to one of claims 25 to 38.

40. Computer program product with a computer program according to claim 39.