Activated sludge wastewater treatment process

Details Activated sludge wastewater treatment process Activated sludge wastewater treatment process

C - Chemistry, Metallurgy

02

F

362/17

C02F 3/20 (2006.01) B01F 3/04 (2006.01) C02F 3/12 (2006.01) B01F 13/10 (2006.01)

Patent

CA 1333301

Wastewater and recycled activated sludge are homogeneously mixed in a first aeration zone by injecting an oxygen-containing gas such as air into the lower portion of the zone under conditions which produce a complete mix reaction and sufficient oxygen is supplied to meet the biological oxygen demands of the mixed liquor. The gas is introduced, preferably by a plurality of fine bubble membrane diffusers, in the form of fine bubbles having a diameter less than about 4 mm. The bubbles provide both the mixing to keep solids in suspension and the oxygen required to maintain the overall dissolved oxygen content in the first aeration zone as close to 0 as possible. The mixed liquor is sequentially contacted with an oxygen-containing gas in second and third aeration zones under conditions which produce a complete mix reaction, preferably by fine bubble membrane diffusers, clarified and a portion of the settled sludge is recycled to the first aeration zone.

602672

Affiliated with

Also associated with

Rating

Activated sludge wastewater treatment process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Activated sludge wastewater treatment process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Activated sludge wastewater treatment process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1222855