STORM-SEWER SYSTEM Russian patent published in 2000 - IPC

FIELD: protection of waters, in particular, prevention of pollution of water basin by storm-waters discharged from urban territory. SUBSTANCE: storm-sewer system has catch-pits, industrial sewage and domestic waste conduit, and a conduit for discharge of storm-waters to water basin, provided with a reservoir for sewage purification divided into inlet, overflow and settling chambers and a chamber for collection of oil products; the settling chamber is connected to the industrial sewage and domestic waste conduit through a sludge pipeline; the system comprises also a lateral saw-tooth shaped spillway separating the inlet chamber from the settling one; the chamber for collection of oil products is provided with a float gate at the inlet and well water outlet at the outlet from the chamber; the system is supplemented with a filtering stone prism installed at the reservoir outlet. EFFECT: simplified design and enhanced quality of sewage purification. 5 dwg