METHOD OF SEWAGE HEADER CLEANING Russian patent published in 2002 - IPC

FIELD: restoration of capacity of pipeline and sewage headers having ground sediments. SUBSTANCE: method includes supply of water into heater, washing out of sediments of header bottom, formation of slurry from sediments material by pumping water from one well of header section to another, and slurry pumping out. Prior to water supply to header, header section is closed from two sides between drain wells. Organized in header in water pumping over from one well to another is turbulent motion of water filling well in course of sediment washing. Upon completion of water pumping over, supplied to header is air under pressure to bubble slurry with simultaneous pumping out of slurry. EFFECT: higher efficiency of cleaning of sewage headers. 1 dwg