A liquid treatment system that may be self-powered includes a hydro-generator. A flow of liquid may be used to rotate the hydro-generator to generate electric power. The hydro-generator may include an outer housing and an inner housing. The inner housing may include a first hub removeably engaged with...http://www.google.es/patents/US7812470?utm_source=gb-gplus-sharePatente US7812470 - Method for making miniature hydro-power generation system
Method for making miniature hydro-power generation system
