CN102583939A - Dehydration treatment method and dehydration pretreatment method for sludge matters and device - Google Patents
Dehydration treatment method and dehydration pretreatment method for sludge matters and device Download PDFInfo
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- CN102583939A CN102583939A CN2011100043215A CN201110004321A CN102583939A CN 102583939 A CN102583939 A CN 102583939A CN 2011100043215 A CN2011100043215 A CN 2011100043215A CN 201110004321 A CN201110004321 A CN 201110004321A CN 102583939 A CN102583939 A CN 102583939A
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- specific conductivity
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/15—Treatment of sludge; Devices therefor by de-watering, drying or thickening by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
Abstract
The invention discloses a dehydration pretreatment method for sludge matters, which comprises the step of adding electrolyte into to-be-treated sludge matters before performing electric dehydration treatment on the to-be-treated sludge matters. The invention also discloses a dehydration treatment method for the sludge matters, which comprises the following steps: adding the electrolyte into the to-be-treated sludge matters, and performing the electric dehydration treatment on the sludge matters added with the electrolyte. Correspondingly, the invention also discloses a dehydration pretreatment device for the sludge matters and a dehydration treatment device for the sludge matters. According to the invention, the electrolyte is added into the to-be-treated sludge matters in advance, so that the conductivity of the to-be-treated sludge matters is increased, the dehydration efficiency of the following electric dehydration unit is efficiently increased, the power consumption of the electric dehydration treatment is obviously reduced and the cost of electric dehydration treatment for the sludge matters is obviously lowered.
Description
Technical field
The present invention relates to the treatment and disposal technology of mud class material, particularly a kind of mud class material dewatering, dehydration pre-treating process and device.
Background technology
Dehydration is the critical process during mud class mass treatment is disposed.Because the speciality that mud class material has high-moisture percentage and is difficult to dewater, the total cost that its moisture content is disposed sludge treatment has great effect.Yet, the moisture in the mud class material except a spot of free water and capillary water, be present in mostly between the mud flco and the mud cell within, be called as combination water, combination water is difficult to remove through the mechanical dehydration means.Traditional mechanical dehydration means like belt filter press, plate-and-frame filter press and centrifugal drier etc., can only be removed most of free water and capillary water, can the water ratio of mud class material be reduced to about 80% at most.Yet the mud cake of water ratio 80% is difficult to transport, is prone to cause pollution on the way, the subsequent disposal cost of disposal is high and terminal disposal technologies such as follow-up compost, landfill, burning are all had bigger detrimentally affect.Particularly, the laws and regulations requirement mud of China its water ratio before getting into garbage sanitary filling field should be lower than 60%.In December, 2010; Stipulate clearly in " about strengthening the notice of urban wastewater treatment firm mud prevention and cure of pollution work " of Chinese Ministry of Environmental Protection issue that sewage work is that purpose transports factory circle with mud to store (promptly not treatment and disposal), must be below 50% with sludge dewatering to water ratio.
It is thus clear that, along with sludge treatment dispose constantly perfect, the deep dehydration of mud class material has become problem demanding prompt solution.
The electro-dewatering technology is a deep dehydration technology efficient, energy-conservation, green, simple to operate, has been subjected to increasing concern a few days ago.Usually can the water ratio of mud class material be reduced to below 60% through the electro-dewatering technology.General electro-dewatering process can simply be described as following three steps:
1) in the mud class material of pending water ratio higher (as 98%), adds flocculation agent generation flocculation reaction, carry out mechanical dehydration through mechanical such as belt filter presses then, obtain the mud cake of water ratio about 80%;
2) mud cake that step 1) is obtained or the pending higher mud class material of water ratio are sent between the anodic-cathodic, apply certain mechanical pressure simultaneously;
3) between two electrodes, add certain voltage, the migration of mud granule material anode under electric field action in the mud, and the moisture in the mud is to cathodic migration, thus the part combination water in the mud is separated, accomplish electro-dewatering and handle.
Can find out that from said process the free water of mud class material can remove through the mechanical dehydration means, the part combination water then can remove through effect of electric field.
But, the electric energy that the consumption of above-mentioned electro-dewatering process need is bigger.Therefore power consumption becomes the main integral part of whole mud class material electro-dewatering treating processes cost.Therefore, the power consumption that how to reduce mud electro-dewatering process is the key point that reduces mud class material electro-dewatering processing cost.
Summary of the invention
In order to reduce the cost that mud class material electro-dewatering is handled; Embodiments of the invention provide dehydration treatment method, dehydration pre-treating process and the device of mud class material; When significantly improving dewatering efficiency, reduce the power consumption that electro-dewatering is handled, thereby reduce the cost that mud class material electro-dewatering is handled.
The described mud class of embodiment of the invention material dehydration pre-treating process comprises: before pending mud is carried out electro-dewatering, in pending mud class material, add ionogen.
The dehydration treatment method of the described mud class of embodiment of the invention material comprises: in pending mud class material, add ionogen; And carry out electro-dewatering and handle having added electrolytical mud class material.
In pending mud class material, adding ionogen comprises: the expection specific conductivity of setting mud class material; According to the original specific conductivity of pending mud class material and expection specific conductivity confirm add electrolytical dosage; According to determined dosage ionogen is added in the pending mud class material.
Wherein, According to the original specific conductivity of pending mud class material and expection specific conductivity confirm add electrolytical dosage and comprise: the sample of pending mud class material is repeatedly added the experiment of solid state electrolyte, obtain this mud class material specific conductivity change and add the relation between the solid state electrolyte dosage; And according to the change and the relation definite dosage that adds solid state electrolyte of add between the solid state electrolyte dosage of the total amount/flow of pending mud class material, original specific conductivity, expection specific conductivity and this mud class material specific conductivity.
According to the original specific conductivity of pending mud class material and expection specific conductivity confirm add electrolytical dosage and comprise: the sample of pending mud class material is repeatedly added the experiment of electrolyte solution, obtain this mud class material specific conductivity change and add the relation between the concentration of electrolyte solution; Add electrolytical concentration according to the relation between the concentration of the change of the total amount/flow of pending mud class material, original specific conductivity, expection specific conductivity and this mud class material specific conductivity and add electrolyte solution is definite; And according to the total amount of the concentration of interpolation electrolyte solution and pending mud class material or flow confirm add electrolytical dosage.
According to the original specific conductivity of pending mud class material and expection specific conductivity confirm add electrolytical dosage and comprise: according to formula Δ C=α
2S
2-α
1S
1Confirm add the concentration of electrolyte solution, wherein, Δ C represent add the concentration of electrolyte solution; S
1Represent the original specific conductivity of mud class material, α
1Represent the experience factor under the original specific conductivity, S
2Represent the expection specific conductivity of mud class material; α
2Experience factor under the representative expection specific conductivity; And according to the total amount of the concentration of interpolation electrolyte solution and pending mud class material or flow confirm add electrolytical dosage.
Perhaps, in pending mud class material, adding ionogen comprises the steps: A, sets and expect that specific conductivity and single add electrolytical dosage; B, add electrolytical dosage according to said single and in said pending mud class material, add ionogen, and stir; Measure to add the specific conductivity of mud class material behind the ionogen and compare, if the specific conductivity of adding mud class material behind the ionogen is less than said expection specific conductivity, then overline performing step B with said expection specific conductivity.
The dehydration pretreating device of the described mud class of embodiment of the invention material comprises: pre-processing module is used for pending mud being carried out add ionogen at pending mud class material before the electro-dewatering.
The dewatering unit of the described mud class of embodiment of the invention material comprises: pre-processing module 100 is used for adding ionogen at pending mud class material; And electro-dewatering equipment 200, be used for carrying out the electro-dewatering processing to having added electrolytical mud class material.
Above-mentioned pre-processing module 100 comprises: specific conductivity is confirmed unit 101, is used for confirming the expection specific conductivity; Ionogen dosage is confirmed unit 102, be used for according to the original specific conductivity of said pending mud class material and said expection specific conductivity confirm add electrolytical dosage; Ionogen adding device 103 is used for according to determined dosage ionogen being added pending mud class material.
Wherein, ionogen dosage confirms that unit 102 comprises: subelement is set, be used to be provided with said mud class material specific conductivity change and add the relation between ionogen or the electrolyte solution dosage; And ionogen dosage computation subunit, be used for adding electrolytical dosage according to the change of the total amount/flow of pending mud class material, original specific conductivity, expection specific conductivity and the mud class material specific conductivity that sets and the relation of add between the ionogen dosage are definite.
Perhaps above-mentioned pre-processing module 10 comprises: specific conductivity is confirmed unit 101, is used for setting the expection specific conductivity; Ionogen dosage is confirmed unit 102 ', is used to set single and adds electrolytical dosage; Ionogen adding device 103 ' is used for adding electrolytical dosage according to single and adds ionogen to said pending mud class material; Agitating unit 104 is used for the pending mud class material behind the interpolation ionogen is stirred; And conductance measurement unit 105; Be used to measure the specific conductivity of the mud class material after the stirring and compare with said expection specific conductivity; If the specific conductivity of mud class material is less than said expection specific conductivity behind the interpolation ionogen, then indicates ionogen adding device 103 ' to add electrolytical dosage according to single once more and in said pending mud class material, add ionogen.
Described dehydration treatment method of the embodiment of the invention and device are through add ionogen in advance in pending mud class material; Improve the specific conductivity of pending mud class material; Thereby can reduce the power consumption that follow-up electro-dewatering is handled greatly; Improve sludge treating efficiency simultaneously, and then reduce the processing cost of the whole dehydration of mud class material.
Description of drawings
Fig. 1 is the schema of the dehydration treatment method of the described mud class of embodiment of the invention material;
Fig. 2 is the dehydration treatment equipment internal structure synoptic diagram of the described mud class of embodiment of the invention material;
Fig. 3 is a kind of internal structure synoptic diagram of pre-processing module;
Fig. 4 is the internal structure synoptic diagram of another kind of pre-processing module;
Fig. 5 has shown that unit of electrical energy consumes and handle the relation between the mud solid content of back when adopting existing electro-dewatering method and dehydration treatment method according to the invention respectively.
Embodiment
As shown in Figure 1, the dewatering of the mud class material that the embodiment of the invention provides mainly comprises:
Step 1, in pending mud class material, add ionogen; And
Consider that electro-dewatering mechanism comprises two synchronous processes: solid particulate is at the electrophoresis process of aqueous phase; And the osmosis process of water molecules between solid particulate; The inventor discovers, can improve the dewatering efficiency of electro-dewatering process through the specific conductivity that increases mud class material.Therefore; The method that present embodiment provides is through adding ionogen to improve the specific conductivity of mud class material; Realize effectively improving the unitary dewatering efficiency of follow-up electro-dewatering; Can also significantly reduce the power consumption that electro-dewatering is handled simultaneously, and then the electro-dewatering processing cost of mud class material is obviously reduced.
In an embodiment of the present invention, the ionogen described in the above-mentioned steps 1 for example is can water soluble ions type salts substances.For example: sodium-chlor (NaCl), sodium sulfate (Na
2SO
4) wait sodium salt, or Repone K (KCl), vitriolate of tartar (K
2SO
4) wait sylvite, or magnesium chloride (MgCl
2) wait magnesium salts or the like.Further, in order to meet the standard about mud discharging and disposal, above-mentioned ionogen does not preferably contain heavy metal or poisonous and harmful ionic ionogen, to avoid that follow-up sludge treatment is disposed the generation detrimentally affect.Further, can also select for use other to help the ionogen of environment and the disposal of follow-up sludge treatment according to real needs.
In order in pending mud class material, to add ionogen, can set the expection specific conductivity earlier; Again according to the original specific conductivity of said pending mud class material and said expection specific conductivity confirm add electrolytical dosage; According to determined dosage ionogen is added said pending mud class material more at last.
Because different mud class materials has different characteristic, therefore, for the solid content (water ratio) after different its specific conductivity of mud class material and its dehydration with and the electro-dewatering power consumption between relation also different.So in the application of reality, can be at first the sample of pending mud class material be repeatedly added electrolytical experiment, obtain this mud class material specific conductivity change and add the relation between the ionogen dosage; Secondly, set the expection specific conductivity of mud class material, as previously mentioned, general electro-dewatering mechanical means can be advised the high conductivity of medium, and the expection specific conductivity should be lower than high conductivity; Once more, according to total amount (quality or the volume)/flow of pending mud class material, and the change of expection specific conductivity and this mud class material specific conductivity and the relation of add between the ionogen dosage are definite adds electrolytical dosage; At last, through testing definite relation between electrolytical dosage and sludge dewatering efficient and the electro-dewatering power consumption of adding.
In the present invention, above-mentioned ionogen can be solid-state ionogen, also can be electrolyte solution.
When in pending mud class material, adding solid-state ionogen; After the expection specific conductivity of having confirmed mud class material; At first need repeatedly add the experiment of solid state electrolyte to the sample of said pending mud class material, obtain this mud class material specific conductivity change and add the relation between the solid state electrolyte dosage; Change and the relation definite dosage that adds solid state electrolyte of add between the solid state electrolyte dosage according to total amount (quality or the volume)/flow of said pending mud class material, original specific conductivity, expection specific conductivity and this mud class material specific conductivity.
When in pending mud class material, adding electrolyte solution, after the expection specific conductivity of having confirmed mud class material, elder generation is according to the original specific conductivity and the definite concentration of adding electrolyte solution of expection specific conductivity of pending mud class material; And then according to total amount (quality or the volume)/flow of the concentration of interpolation electrolyte solution and pending mud class material confirm add electrolytical dosage.In the application of reality, can at first repeatedly add the experiment of electrolyte solution to the sample of pending mud class material, obtain this mud class material specific conductivity change and add the relation between the concentration of electrolyte solution; Then, set the expection specific conductivity of mud class material; Add electrolytical concentration according to the relation between the concentration of the change of expection specific conductivity and this mud class material specific conductivity and add electrolyte solution is definite again; At last, again according to the total amount of the concentration of interpolation electrolyte solution and pending mud class material or flow confirm add electrolytical dosage.Perhaps as replacement scheme, after the expection specific conductivity of having confirmed mud class material, directly according to the definite concentration of adding electrolyte solution of following formula (1).Use this replacement scheme through experiment showed,, the interpolation that obtains possibly have certain deviation between specific conductivity and the expectation specific conductivity of electrolytical mud class material, still, this deviation is an acceptable in practical application, and is easy to calculating.Final specific conductivity behind the interpolation ionogen is as the criterion with measured value.
ΔC＝α
2·S
2-α
1·S
1(1)
Wherein, α represent add the experience factor between electrolytical strength of solution and the electrical conductivity of solution, specifically different, as shown in table 1 according to adding electrolytical price; S represents specific conductivity, and unit is little siemens/cm (us/cm); Δ C represent add the concentration of electrolyte solution, unit is mg/litre (mg/L).Particularly, S
1Represent the original specific conductivity of mud class material, α
1Represent the experience factor under the original specific conductivity, S
2Represent the expection specific conductivity of mud class material; α
2Experience factor under the representative expection specific conductivity.
Table 1
Confirmed add the dosage of ionogen (solid state electrolyte or electrolyte solution) after, just can ionogen be added in the pending mud class material according to determined dosage.Further, can also stir adding electrolytical mud class material.Can also further measure the specific conductivity of adding the mud class material behind the ionogen, whether reach the expection specific conductivity with the specific conductivity of confirming to add the mud class material behind the ionogen.If no, then can add ionogen through preceding method to mud class material once more.In addition, can also according to the specific conductivity of the mud class material after the interpolation electrolysis of measuring and the electrolytical dosage that is added revise this mud class material specific conductivity that obtains through experiment change and add the relation between the ionogen dosage.
In addition,, can also adopt multiple step format to add electrolytical method, specifically comprise except the above-mentioned disposable electrolytical method of in pending mud class material, adding:
Step 11 is set expection specific conductivity and single and is added electrolytical dosage; Wherein, Single adds electrolytical dosage and can set according to the change of the mud class material specific conductivity that obtains through experiment and the relation of being added between the ionogen dosage; Perhaps rule of thumb value decision, single adds electrolytical dosage can be identical at every turn, also can increase gradually or reduce; For better, the more efficient expection specific conductivity that reaches, single adds electrolytical dosage and can in the interpolation process, adjust;
Step 12 is added electrolytical dosage according to the single of setting and in said pending mud class material, is added ionogen, and stirs;
Step 13, the specific conductivity of mud class material behind the mensuration interpolation ionogen;
Step 14, specific conductivity and the said expection specific conductivity of mud class material compares behind the ionogen with adding, if the specific conductivity of mud class material is then returned step 12 less than said expection specific conductivity behind the interpolation ionogen.
In the present embodiment, step 14 can also comprise that step 12 was also promptly no longer returned in shut-down operation when the specific conductivity of the mud class material after adding ionogen was greater than or equal to the expection specific conductivity.Perhaps, step 14 can comprise mud class thing after adding ionogen the gap of specific conductivity and expection specific conductivity when being equal to or less than a threshold value, shut-down operation.
Need to prove that in aforesaid method, the ionogen that is added both can be that solid-state ionogen also can be an electrolyte solution.
Need to prove; Above-mentionedly in pending mud class material, add electrolytical operation and can not produce any detrimentally affect follow-up electro-dewatering treating processes; Therefore, the described dehydration treatment method of embodiment of the invention step 2 can adopt any existing electro-dewatering treatment technology.
On the other hand; Core of the present invention is before pending mud class material is dewatered, to have increased a dehydration pre-treatment process to mud class material shown in step 1; Also promptly before pending mud is dewatered; Earlier in pending mud class material, add ionogen, and concrete addition means is provided.Through this electrolytical pre-treatment process of interpolation in pending mud class material in advance; The specific conductivity of pending mud class material is increased to the value of expection; Like this; Can effectively improve the unitary dewatering efficiency of follow-up electro-dewatering, significantly reduce the power consumption that electro-dewatering is handled simultaneously, and then the electro-dewatering processing cost of mud class material is obviously reduced.Except the electro-dewatering treating processes, the dehydration pre-treatment process of above-mentioned mud class material can also be applied to before the processed process of other mud class materials, to reduce the processed cost of mud class material.
The dehydration treatment method of corresponding above-mentioned mud class material and the dehydration pre-treating process of mud class material, embodiments of the invention also provide the dehydration pretreating device of mud class material.The dehydration pretreating device of the mud class material that the embodiment of the invention provides comprises: be used for before pending mud being carried out electro-dewatering, adding electrolytical pre-processing module at pending mud class material.
Need to prove that the dehydration equipment that the described processing module of the embodiment of the invention is positioned over mud class material gets final product before, even can be placed in the transport pipeline of mud class material.
In addition, above-mentioned pre-processing module can also with existing any electro-dewatering equipment, constitute the dewatering unit of a mud class material together.Pre-processing module can not produce any detrimentally affect to follow-up electro-dewatering equipment.At this moment, the internal structure of the dewatering unit of this mud class material is as shown in Figure 2, mainly comprises: pre-processing module 100 is used for adding ionogen at pending mud class material; And electro-dewatering equipment 200, be used for carrying out the electro-dewatering processing to having added electrolytical mud class material.
The internal structure of above-mentioned pre-processing module 100 is as shown in Figure 3, specifically can comprise:
Specific conductivity is confirmed unit 101, is used for confirming the expection specific conductivity, and the unit can be to be set and adjusted by the user in concrete should confirming, for example is embodied as a personal-machine interactive interface or is embodied as a storing device;
Ionogen dosage is confirmed unit 102, be used for according to the original specific conductivity of said pending mud class material and said expection specific conductivity confirm add electrolytical dosage;
Further, pre-processing module can also comprise agitating unit, is used for the electrolytical pending mud class material of adding is stirred.
Further; Pre-processing module can also comprise the conductance measurement unit; Be used for the specific conductivity of mud class material and compare with the expection specific conductivity, if do not reach the expection specific conductivity, can notify ionogen dosage confirm the unit confirm add electrolytical dosage.Thus, can add ionogen to mud class material again, until reaching the expection specific conductivity.
Wherein, ionogen dosage confirms that unit 102 specifically can comprise: subelement is set, be used to be provided with said mud class material specific conductivity change and add the relation between ionogen or the electrolyte solution dosage; And ionogen dosage computation subunit, be used for adding electrolytical dosage according to the change of the total amount/flow of pending mud class material, original specific conductivity, expection specific conductivity and the mud class material specific conductivity that sets and the relation of add between the ionogen dosage are definite.
The internal structure of above-mentioned pre-processing module 100 perhaps can be as shown in Figure 4, specifically comprises:
Specific conductivity is confirmed unit 101, is used for confirming the expection specific conductivity, and concrete realization can be with reference to embodiment illustrated in fig. 3;
Ionogen dosage is confirmed unit 102 '; Be used to set single and add electrolytical dosage; This single adds electrolytical dosage and can confirmed, adjusted by the user also and can be adjusted by device oneself; And it can be each identical that this single adds electrolytical dosage, also can increase gradually or reduce;
Ionogen adding device 103 ' is used for adding electrolytical dosage according to single and adds ionogen to said pending mud class material;
Agitating unit 104 is used for the pending mud class material behind the interpolation ionogen is stirred; And
In the present embodiment; Conductance measurement unit 105 for example can be after adding ionogen the gap of specific conductivity and expection specific conductivity of mud class material when being less than or equal to a threshold value; Stop to add, also promptly no longer indicate ionogen adding device 103 ' to add ionogen.
Equally; The dewatering unit of above-mentioned mud class material adds ionogen through pre-processing module 100 in pending mud class material; The specific conductivity of pending mud class material is increased to the value of expection, like this, can effectively improves the unitary dewatering efficiency of follow-up electro-dewatering; Significantly reduce the power consumption that electro-dewatering is handled simultaneously, and then the electro-dewatering processing cost of mud class material is obviously reduced.
It should be stressed that the described mud class of embodiment of the invention material can be a mud, for example municipal sludge and industrial sludge also can be the materials of the similar mud of organic sludge or the like.
Specify the dehydration treatment method of the said mud class of embodiment of the invention material and the beneficial effect that device can bring through concrete experimental result below.In this experimentation, at first to have measured under identical electro-dewatering voltage, when changing the specific conductivity of mud class material, (unit is the mud solid content after dried mud of kilowatt-hour/ton (kwh/tonDS) and the processed in unit of electrical energy consumption.And measured the specific conductivity of mud class material has been brought up to after the fixed value, the mud solid content after unit power consumption and processed under the different electric dehydration voltage.In order to compare, to have measured respectively and do not added electrolytical former mud under different electric dehydration voltage, the mud solid content after unit of electrical energy consumption and the processed.In this experiment, adopt existing electro-dewatering technology to carry out processed.Experimental result is as shown in Figure 5.In Fig. 5, round dot is represented and is not added electrolytical former mud under different electric dehydration voltage, the mud solid content after unit of electrical energy consumption and the processed (specific conductivity of former mud is about 1200～1500 μ s/cm); When square points representative is increased to 4575 μ s/cm with the specific conductivity of mud class material, at different electric dehydration voltage (20V, 40V, 60V and 80V) the mud solid content after unit power consumption and the processed down; It is 60V that electro-dewatering voltage is worked as in the Diamond spot representative, when the specific conductivity of mud class material is respectively 1585 μ s/cm (former mud), 2920 μ s/cm and 4885 μ s/cm, and the mud solid content after unit of electrical energy consumption and the processed.Contrasting under the mud solid content behind the identical electro-dewatering position of round dot and square points can find out; Square points is all on the left side of circle point; This explanation with the specific conductivity of mud class material when 1200～1500 μ s/cm are increased to 4575 μ s/cm; Obtaining the required unit of electrical energy consumption of identical mud solid content will significantly reduce; This has just proved that also the power consumption that can reduce the electro-dewatering process through the specific conductivity that improves mud class material improves the dewatering efficiency of electro-dewatering simultaneously, and then reduces the processing cost of whole dehydration.In addition; Contrasting under the identical mud solid content position of round dot and Diamond spot can find out; Diamond spot is all on the left side of circle point (except that the corresponding Diamond spot of former mud); And the high more Diamond spot distance circle of specific conductivity form point is far away more; This also explain with the specific conductivity of mud class material when 1200～1500 μ s/cm are increased to 2920 μ s/cm and 4885 μ s/cm respectively, obtains the required unit of electrical energy consumption of identical mud solid content and also significantly reduce, and the required unit of electrical energy consumption of the identical mud solid content of the high more acquisition of the specific conductivity of mud class material is more little; This has just proved that also the power consumption that can reduce the electro-dewatering process through the specific conductivity that improves mud class material improves the dewatering efficiency of electro-dewatering simultaneously, and then reduces the processing cost of whole dehydration.
Claims (14)
1. the dehydration pre-treating process of a mud class material is characterized in that, comprising: before pending mud class material is carried out electro-dewatering, in said pending mud class material, add ionogen.
2. the dehydration treatment method of a mud class material is characterized in that, comprising:
In pending mud class material, add ionogen; And
Carry out the electro-dewatering processing to having added electrolytical mud class material.
3. method according to claim 1 and 2 is characterized in that, said ionogen is can water soluble ions type salts substances.
4. method according to claim 3 is characterized in that, said salts substances is sodium salt, sylvite or magnesium salts.
5. method according to claim 1 and 2 is characterized in that, saidly in pending mud class material, adds ionogen, comprising:
Set the expection specific conductivity;
According to the original specific conductivity of said pending mud class material and said expection specific conductivity confirm add electrolytical dosage;
According to determined dosage ionogen is added said pending mud class material.
6. method according to claim 5 is characterized in that, said original specific conductivity and said expection specific conductivity according to pending mud class material confirm add electrolytical dosage, comprising:
The sample of said pending mud class material is repeatedly added the experiment of solid state electrolyte, obtain this mud class material specific conductivity change and add the relation between the solid state electrolyte dosage; And
Change according to the total amount of said pending mud class material, original specific conductivity, expection specific conductivity and this mud class material specific conductivity is added the definite dosage that adds solid state electrolyte of relation between the solid state electrolyte dosage with institute, perhaps according to the flow of said pending mud class material, original specific conductivity, expect specific conductivity and this mud class material specific conductivity change and add the definite dosage that adds solid state electrolyte of relation between the solid state electrolyte dosage.
7. method according to claim 5 is characterized in that, said original specific conductivity and said expection specific conductivity according to pending mud class material confirm add electrolytical dosage, comprising:
The sample of pending mud class material is repeatedly added the experiment of electrolyte solution, obtain this mud class material specific conductivity change and add the relation between the concentration of electrolyte solution;
According to the definite concentration of adding electrolyte solution of relation between the concentration of the change of the total amount of said pending mud class material, original specific conductivity, expection specific conductivity and this mud class material specific conductivity and adds electrolyte solution, perhaps according to the flow of said pending mud class material, original specific conductivity, expect specific conductivity and this mud class material specific conductivity change and add the definite concentration of adding electrolyte solution of relation between the concentration of electrolyte solution; And
According to the total amount of the concentration of interpolation electrolyte solution and said pending mud class material or flow confirm add electrolytical dosage.
8. method according to claim 5 is characterized in that, said original specific conductivity and said expection specific conductivity according to pending mud class material confirm add electrolytical dosage, comprising:
According to formula Δ C=α
2S
2-α
2S
1Confirm add the concentration of electrolyte solution, wherein, Δ C represent add the concentration of electrolyte solution; S
1Represent the original specific conductivity of mud class material, α
1Represent the experience factor under the original specific conductivity, S
2Represent the expection specific conductivity of mud class material; α
2Experience factor under the representative expection specific conductivity; And
According to the total amount of the concentration of interpolation electrolyte solution and said pending mud class material or flow confirm add electrolytical dosage.
9. method according to claim 1 and 2 is characterized in that, saidly in pending mud class material, adds ionogen, comprising:
A, setting expection specific conductivity and single add electrolytical dosage;
B, add electrolytical dosage according to said single and in said pending mud class material, add ionogen, and stir;
C, measure to add the specific conductivity of mud class material behind the ionogen and compare with said expection specific conductivity; If the specific conductivity of mud class material is less than said expection specific conductivity behind the interpolation ionogen; Performing step B again then, the specific conductivity of mud class material is greater than or equal to said expection specific conductivity after adding ionogen.
10. the dehydration pretreating device of a mud class material, said device comprises: pre-processing module (100) is used for pending mud being carried out add ionogen at pending mud class material before the electro-dewatering.
11. the dewatering unit of a mud class material, said device comprises:
Pre-processing module (100) is used for adding ionogen at pending mud class material; And
Electro-dewatering equipment (200) is used for carrying out the electro-dewatering processing to having added electrolytical mud class material.
12., it is characterized in that said pre-processing module (100) comprising according to claim 10 or 11 described devices:
Specific conductivity is confirmed unit (101), is used for confirming the expection specific conductivity;
Ionogen dosage is confirmed unit (102), be used for according to the original specific conductivity of said pending mud class material and said expection specific conductivity confirm add electrolytical dosage;
Ionogen adding device (103) is used for according to determined dosage ionogen being added pending mud class material.
13. device according to claim 12 is characterized in that, said ionogen dosage confirms that unit (102) comprising:
Subelement is set, be used to be provided with said mud class material specific conductivity change and add the relation between ionogen or the electrolyte solution dosage; And
Ionogen dosage computation subunit; Be used for according to the change of the total amount of said pending mud class material, original specific conductivity, expection specific conductivity and the mud class material specific conductivity that sets and institute adds relation between the ionogen dosage definite add electrolytical dosage, perhaps be used for according to the flow of said pending mud class material, original specific conductivity, expect specific conductivity and the change of the mud class material specific conductivity that sets and add that relation between the ionogen dosage is definite adds electrolytical dosage.
14., it is characterized in that said pre-processing module (100) comprising according to claim 10 or 11 described methods:
Specific conductivity is confirmed unit (101), is used for confirming the expection specific conductivity;
Ionogen dosage is confirmed unit (102 '), is used to set single and adds electrolytical dosage;
Ionogen adding device (103 ') is used for single according to said setting and adds electrolytical dosage and add ionogen to said pending mud class material;
Agitating unit (104) is used for the pending mud class material behind the interpolation ionogen is stirred; And
Conductance measurement unit (105); Be used to measure the specific conductivity of the mud class material after the stirring and compare with said expection specific conductivity; If the specific conductivity of mud class material is less than said expection specific conductivity behind the interpolation ionogen, then indicates said ionogen adding device (103 ') to add electrolytical dosage according to said single once more and in said pending mud class material, add ionogen.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100043215A CN102583939A (en) | 2011-01-11 | 2011-01-11 | Dehydration treatment method and dehydration pretreatment method for sludge matters and device |
| PCT/EP2011/072265 WO2012095226A1 (en) | 2011-01-11 | 2011-12-09 | Method and apparatus for dehydration treatment, and treatment before dehydration of a sludge substance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100043215A CN102583939A (en) | 2011-01-11 | 2011-01-11 | Dehydration treatment method and dehydration pretreatment method for sludge matters and device |
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| CN102583939A true CN102583939A (en) | 2012-07-18 |
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| CN109336352A (en) * | 2018-11-05 | 2019-02-15 | 李舒馨 | A kind of method for sludge treatment |
| CN111253031A (en) * | 2020-03-19 | 2020-06-09 | 西安理工大学 | Method for strengthening sludge stabilization through electrochemical chlorination |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4655932A (en) * | 1986-02-10 | 1987-04-07 | Don Roslonski | Method and apparatus for the disintegration and destruction of hazardous and toxic sludge materials |
| US5230809A (en) * | 1992-03-11 | 1993-07-27 | Donald Roslonski | Method and apparatus for dewatering sludge materials |
| CN1161937A (en) * | 1996-04-11 | 1997-10-15 | 南宁市国有资产工业投资经营公司 | Electric sludge-dewatering and sewage-treating method and apparatus thereof |
| JP3196369B2 (en) * | 1992-11-19 | 2001-08-06 | 富士電機株式会社 | Operating method of electroosmotic dehydrator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60114315A (en) * | 1983-11-26 | 1985-06-20 | Shinko Fuaudoraa Kk | Dehydrating method of organic sludge |
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- 2011-01-11 CN CN2011100043215A patent/CN102583939A/en active Pending
- 2011-12-09 WO PCT/EP2011/072265 patent/WO2012095226A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4655932A (en) * | 1986-02-10 | 1987-04-07 | Don Roslonski | Method and apparatus for the disintegration and destruction of hazardous and toxic sludge materials |
| US5230809A (en) * | 1992-03-11 | 1993-07-27 | Donald Roslonski | Method and apparatus for dewatering sludge materials |
| JP3196369B2 (en) * | 1992-11-19 | 2001-08-06 | 富士電機株式会社 | Operating method of electroosmotic dehydrator |
| CN1161937A (en) * | 1996-04-11 | 1997-10-15 | 南宁市国有资产工业投资经营公司 | Electric sludge-dewatering and sewage-treating method and apparatus thereof |
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Application publication date: 20120718 |