WATER PRELIMINARY FILTER Russian patent published in 2015 - IPC B01D29/01 

FIELD: chemistry.

SUBSTANCE: filter includes a cylindrical housing inside of which an open reservoir is placed with clearance, the reservoir having a ratio of the inner diameter to the height of 2:1; the top part of the housing has a pipe for inlet of waste water into a coalescent tray mounted on the inner wall of the housing, the inner diameter of which is equal to the diameter of the open reservoir, wherein the top part of the open reservoir is fitted with a cloth filter made of fibrous nylon cloth, and the bottom of the reservoir has a conical shape and is connected to a pipe for removing condensed deposits, which is connected to a centrifugal pump, and in the side wall of the housing there is an emergency drain pipe and an outlet pipe. The preferred ratio of the inner diameter of the housing and the outer diameter of the open reservoir is 1:1.3 and the ratio of the height of the housing and the height of the open reservoir is preferably 1.5:1.

EFFECT: reduced volume of the sludge mixture, high throughput of treatment facilities and reduced area of the sludge bed.

2 cl, 1 dwg