PLANT FOR PURIFICATION OF SEWAGE WATER IN CIRCULATING WATER SUPPLY SYSTEMS AT CLEANING TRANSPORT FACILITIES Russian patent published in 2008 - IPC C02F1/40 C02F9/00 C02F103/44 

FIELD: purification of sewage water from sand and other suspended matter, petroleum products, as well as decontamination of cleaned service water in circulating water supply systems at cleaning transport facilities.

SUBSTANCE: proposed plant includes hydraulic cyclone, oil separator, thin-layer shelved settler, final cleaning filter with cleaned water reservoir. Hydraulic cyclone is equipped with pipe lines supplying dirty water for cleaning and is communicated with thin-layer shelved settler by means of water discharge pipe line; it is also communicated with oil separator by means of watery petroleum product discharge pipe line. Thin-layer shelved settler is communicated with final cleaning filter by means of water discharge pipe line. Oil separator is communicated with thin-layer shelved settler by means of settled water discharge pipe line. Hydraulic cyclone, oil separator, thin-layer shelved settler and final cleaning filter are communicated with sludge receiver. Floatation unit is arranged in upper part of reservoir where thin-layer shelved settler is mounted.

EFFECT: high degree of purification of sewage water in circulating water supply systems at washing transport facilities.

4 cl, 3 dwg