DEVICE FOR PURIFYING OIL-CONTAINING WASTE WATER Russian patent published in 2010 - IPC C02F1/40 

FIELD: chemistry.

SUBSTANCE: invention relates to purification of waste water and can be used to extract oil products from waste water. The device has a container which is divided into accumulation and floatation zones, with a jacket in the latter, which is linked to a source of compressed air and with a purified liquid storage container. The accumulation zone is linked to a sealed evacuated tank fitted with a heater. The container and the tank are fitted with apparatus for discharging floating material and containers for collecting the said material. The jacket is made with possibility of back-and-forth movement along the longitudinal axis and its end is in form of a confuser. The inlet pipe is placed inside an extra jacket and its bottom part is enclosed in a casing. The extra jacket and the casing are made with possibility of back-and-forth movement along a longitudinal axis. The edge of the casing has a circular groove. The vertical wall of the casing has holes. The floatation zone of the sealed tank is divided into vertical slit-type channels through walls, each formed by flat-oval heating elements lying one on top of the other and linked with a source of heating medium. There are fluoroplastic inserts between the channels.

EFFECT: increased efficiency of the device.

3 cl, 4 dwg