CONTAINER-TYPE FILTER Russian patent published in 2007 - IPC E02B11/00 

FIELD: agriculture and hydro-engineering melioration, particularly to clean waste, drain and sewage water in closed accumulation-and-drain pipe systems.

SUBSTANCE: container-type filter comprises bottom and drain well body, drain and accumulator mouths and replaceable filtering member. Filtering member is made as replaceable container with conically perforated bottom and sharpened perforation edges. The container is filled with filtering material and reagent. The perforated container bottom freely rests upon spring supports located on well bottom. The container is hydraulically aligned with water level in drain accumulator mouths. To manage water level in container and in head of next accumulator section water level at drain mouth exceeds that in filter container and at next accumulator section head for not less than 0.2 m and 0.3 m correspondingly and water level at accumulator mouth exceeds that in container and at next accumulator section head for 0.1 m and 0.2 m correspondingly. The container comprises fixers to provide self-regulation of hydraulic communication between container and mouths of drain and accumulator. The container also has rigid shaped discharge pipeline to connect thereof with next accumulator section head.

EFFECT: simplified operation, increased operational reliability, quality of water cleaning and filtering capacity.

2 cl, 3 dwg