This system, known as the system is fixed, the revolving plate series film, all place the installation in reinforced concrete tank. The level of the water surface above the shaft slightly. Make the surface area of the plate sank in water about 35-40 percent of all plate area and in the rotation of the plate, rotate motor shaft driven series on biological and gear reducer in order to rotate the plate at a rate of approximately 1-3 cycles per minute.
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