DEVICE FOR CLEANING SURFACE WATER FROM SUSPENDED SUBSTANCES AND OIL-AND-OIL PRODUCTS Russian patent published in 2020 - IPC C02F1/40 E03F5/14 

FIELD: water treatment plant; ecology.

SUBSTANCE: invention relates to water treatment and can be used for local treatment of storm and melt drains from territories of industrial and motor transport enterprises, filling stations and vehicle servicing stations. Device for treatment of waste water from suspended substances and oil-and-oil products includes housing 1 with filling 2 and drain 3 branch pipes and coarse purification chamber 4, three series-connected units of profiled sheets 8, 9, 10 with input 11, 13, 15, output 12, 14, 16, upper 18 and lower 19 branch pipes. Inlet branch pipe 11 of first unit 8 communicates with coarse filter 4. Outlet branch pipe 12 of first unit 8 communicates with the inlet branch pipe 13 of second unit 9. Outlet branch pipe 14 of second unit 9 communicates with the inlet branch pipe of third block 10. Outlet branch pipe 16 of third unit 10 communicates with drain branch pipe 3. Upper branch pipes 18 of all blocks 8, 9, 10 of profiled sheets are made with possibility of emergent contaminants release. Lower branch pipes 19 of all blocks 8, 9, 10 of profiled sheets are made with possibility of discharge of settling contaminants. Shaped sheets have ledges and recesses. In first 8 and third 10 blocks the profiled sheets are arranged so that their ledges and recesses are directed to the same side; in the ledges the upper holes are made, in the cavities the lower holes are made. In second block 9 shaped sheets are arranged so that their ledges and recesses are directed to opposite sides with formation of channels of variable cross-section. At that, sheets have no holes for discharge of contaminants in projections and recesses forming the narrowest section of channels.

EFFECT: invention increases efficiency of treating waste water from oil and oil products.

1 cl, 4 dwg