Production of non-bulking activated sludge

Details Production of non-bulking activated sludge Production of non-bulking activated sludge

1976-04-12

1977-11-01

Wyse, Thomas G.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 8, 210 16, 210DIG28, C02C 106

Patent

active

040564657

ABSTRACT:
A modified activated sludge system is provided wherein BOD-containing wastewater and recycled sludge are initially admixed under anaerobic conditions in the substantial absence of oxygen or oxidizing agents and subsequently subjected to aeration and clarification. By the disclosed operation the selective production of non-bulking biomass is favored while effective removal of phosphates is obtained. By a further alternative modification, nitrates and nitrites are also removed by interposing an anoxic treating zone between the anaerobic zone and the aerating zone.

REFERENCES:
patent: 3764523 (1973-10-01), Stankewich
patent: 3939068 (1976-02-01), Wendt et al.
patent: 3953327 (1976-04-01), Parker
patent: 3964998 (1976-06-01), Barnard
patent: 3994802 (1976-11-01), Casey et al.
Nicholls, "Full Scale Experimentation on the New Johannesburg Extended Aeration Plants," Water SA, vol. 1, No. 3, Oct. 1975.
McLaren et al., "Effective Phosphorus Removal from Sewage by Biological Means," Water SA, vol. 2, No. 1, Jan. 1976.
Barnard, "A Review of Biological Phosphorus Removal in the Activated Sludge Process," Water SA, vol. 2, No. 3, July 1976.
Barnard, "Biological Phosphorus Removal in the Activated Sludge Process--Review and Proposals," Monthly Meeting of Institute of Water Pollution Control (SA Branch), Johannesburg, South Africa, July, 1975.
Martin et al., "Kinetics of Enhanced Phosphorus Removal in the Activated Sludge Process," University of Cape Town, Sept. 1975.

Affiliated with

Also associated with

Rating

Production of non-bulking activated sludge does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Production of non-bulking activated sludge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of non-bulking activated sludge will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-6508