CIRCULAR SETTLING TANK Russian patent published in 2014 - IPC B01D21/00 C02F1/00 

FIELD: chemistry.

SUBSTANCE: settling tank consists of a reservoir with a bottom supply of water to be purified through a central tube, provided with a water-distributor, providing water supply into the reservoir in the form of jets in horizontal planes at different angles of the jet direction with respect to the radial direction. The settling tank is also provided with means for discharge of purified water from the volume lower than its level with a regulated level of discharge, as well as means for providing automatic control of water discharge from the reservoir at a constant rate, which does not depend on change of the rate of supply in it of water to be purified.

EFFECT: extension of technological possibilities of the settling tank, simplification of water distributor manufacturing, increased efficiency of sewage water clarification, provision of possibility of automatic control of the rate of purified water discharge from the settling tank.

2 cl, 3 dwg