Backflushing method and system

Details Backflushing method and system Backflushing method and system

C - Chemistry, Metallurgy

02

F

362/9

C02F 1/72 (2006.01) C02F 3/02 (2006.01)

Patent

CA 1088229

ABSTRACT OF THE DISCLOSURE An improved method and system for aerating and mixing waste water which is circulated through a plurality of passages in submerged mixing chambers from an inlet to outlet of each wherein gas is mixed with the water, preferably by forming two parallel streams. To flush debris from the mixing chambers and conduits: (1) each inlet is connected to a location higher than the inlet, and at a lower pressure; (2) circulation of water is stopped; and (3) gas is con- tinued to be forced into the passages to create backward flow of waste water through each chamber from outlet to inlet and thence to the higher location, carrying lodged debris out of the chambers and conduits. Inter- mittent gas flow creates pulsations which help dislodge debris.

292707

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