METHOD OF CONDITIONING OF SURFACE WATER RUN-OFFS FROM SUSPENDED MATTERS AND PETROLEUM PRODUCTS Russian patent published in 2017 - IPC C02F9/08 C02F1/52 C02F1/28 B01D21/01 B01D29/11 C02F103/44 

FIELD: oil and gas industry.

SUBSTANCE: invention can be used for conditioning of the heavily polluted surface water run-offs from the territories of the industrial enterprises, solid waste landfills. Water run-offs with preliminary injected flocculant with hydrophobised properties are injected to the sand precipitating stage and large particles, fine mechanical conditioning from the suspended matters in the layer of the bedding from the cylindrical rings, filled in bulk, sorption of free and emulsified petroleum products, additional sorption of soluble petroleum products, sorbented, with microflora attached and the oxygen delivery. The water run-offs input for the conditioning is automatically changed proportionally to the rainfall density. The lower limit of the automatic control of the water run-offs input makes up not less than 10% of the nominal. Before the fine mechanical conditioning, an additional mechanical purification is performed using an easy recycled filter bag with the filtering rating of 10-100 µm and the filtering square which is 0.1-0.25 of the filtering square at the stage of the main conditioning.

EFFECT: method provides the degree of conditioning of the surface water run-offs of 50-75%, which makes it possible to reduce the bedding on the stage of the main conditioning and perform the replacing of the bedding of not more than once a year.

3 dwg, 5 tbl, 3 ex