LIQUID FILTERING PLANT Russian patent published in 2000 - IPC

FIELD: devices for liquid treatment with the aid of filters in the form of membrane apparatuses with employment of tubular membrane members in particular, treatment of sewage of industrial enterprises, treatment of natural waters in water supply systems, treatment of lubricant-coolers and waste petroleum products. SUBSTANCE: liquid filtering plant has a filter in the form of a membrane apparatus, accumulating tank made in the form of a hydraulic accumulator, pipelines of source, treated and non-treated liquids with valves, and a pump installed at the inlet of the source liquid pipe-line. The plant is furnished with an additional pipe-line of non-treated liquid with a control valve and solenoid- operated valve that are controlled at least by one timer. The additional pipe-line of non-treated liquid is connected to the source liquid pipe-line by means of a by-pass control valve. EFFECT: maximum yield of treated water in industrial conditions with an enhanced life of filters. 1 dwg