Phosphate removal from bod-containing wastewater

Details Phosphate removal from bod-containing wastewater Phosphate removal from bod-containing wastewater

C - Chemistry, Metallurgy

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C02F 3/30 (2006.01) C02F 3/12 (2006.01) C02F 3/26 (2006.01)

Patent

CA 1072224

PHOSPHATE REMOVAL FROM BOD-CONTAINING WASTEWATER ABSTRACT OF THE DISCLOSURE Activated sludge wastewater treatment process for removing phosphate from BOD-containing wastewater in which phosphate-enriched sludge formed in the aeration zone is settled in a phosphate stripping zone under an- aerobic conditions to cause release of phosphate from the sludge solids. The released phosphate is countercurrently stripped from the sludge in the stripping zone by a low phosphate, low solids stripping medium to provide phos- phate-lower sludge for recirculation to the aeration zone. S P E C I F I C A T I O N

263772

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