SETTLING TANK FOR PURIFICATION OF OIL-CONTAINING WASTEWATER Russian patent published in 2012 - IPC B01D17/02 

FIELD: chemistry.

SUBSTANCE: settling tank contains reservoir 1 with input branch pipe 3 and branch pipes of water 4 and oil 5 output. Filtering-coalescing packets 2 are made in form of plates of porous-cellular polymer material and are installed with clearance. Plates are made of similar material, 0.1-0.5 m thick, with clearance between them being made 0.05-0.2 m wide, and packet being made with total thickness 0.5-2 m. Volume of precipitation zone is made 3 and more times larger than volume of packet. Precipitation zone 7 is located between filtering-coalescing packets 3.

EFFECT: invention makes it possible to ensure high degree of industrial oil wastewater purification.

2 dwg