US Patent 7812470 Method for making miniature hydro-power generation system

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 a second hub. During manufacture, a plurality of paddles may be replaceably engaged between the first hub and the second hub. Also during manufacture, an electrical generator may be disposed in the inner housing. In operation, a flow of liquid may strike the paddles causing the inner housing to rotate. During rotation of the housing, the electrical generator may produce electrical power.