FILTER FOR PURIFICATION OF NATURAL WATERS AND SEWAGE WITH A DOWNWARD FLOW DIRECTION OF A LIQUID Russian patent published in 2005 - IPC

FIELD: filters for purification of the downward flow natural waters and sewage.

SUBSTANCE: the invention is pertaining to the filters for purification of natural waters and sewage with downward flow direction of a liquid, in particular, may be used for purification of sewage from the car washes in a system of the local sewage treating plants and from a surface sewage run-off from the refueling stations. The filter contains a body, a pipeline of a distribution system of initial water for filtration, pipelines for withdrawal of the purified water, for feeding and withdrawal of the rinsing water, the upper separating protective net made out of iron or aluminum, a separating interlayer grid made out of copper, the first layer of the granular filtrating loading consisting of a mixture of electropositive and electronegative particles, the second bed from anthracitic filtrating loading with coarseness of 1-2.2 mm with the height equal of 1-3 heights of the first layer, a drainage loading located on a support grating, and also an atmospheric valve 15. In the capacity of electropositive corpuscles apply blacklead, coke or carboniferous waste products. The technical result is expansion of the functionalities of the filter by after-purification of sewage, rain or melt waters without application of special chemical reagents.

EFFECT: the invention allows to expand the functionalities of the filter by after-purification of sewage, rain or melt waters without application of special chemical reagents.

2 cl, 1 dwg