PLANT FOR PURIFICATION OF PETROLEUM-CONTAINING SEWAGE WATER Russian patent published in 1997 - IPC

FIELD: sewage water purification at petroleum storages. SUBSTANCE: petroleum-containing water purification plant has device for delivery of primary water to preliminary purification unit and seriesly connected with it are flotation cleaning unit, unit of sorption filters, device for branching purified water, unit for preparation of water-air flows directed for mixing with water being purified in flotation cleaning unit, unit for separation and dewatering of sediment and foam connected with pipelines for removing sediment and foam, collectors of dewatered sediment and petroleum product and provided with circulation pipeline for return of separated water to preliminary purification unit. Also provided are filter regeneration unit and circulation water system, automatic purification process control unit connected at input with sensors of physical and chemical control parameters and time relay, and at output - with reagent proportioner, regulation valves, pumps and automatically operated gate valves. Plant simplifies servicing of purification facilities, makes them operate speedily and reduces cost. EFFECT: high overall efficiency. 1 dwg