Wastewater biological phosphorus removal process

Details Wastewater biological phosphorus removal process Wastewater biological phosphorus removal process

1993-12-28

1996-01-02

Upton, Christopher

Liquid purification or separation

Processes

Treatment by living organism

210607, 210621, 210903, 210906, C02F 330

Patent

active

054805481

ABSTRACT:
The present invention relates to a process for treating wastewater utilizing a step feed return activated sludge process. The wastewater is directed via one or more step feed points through a mainstream process. The step feed point includes at least one aerobic zone and at least one anoxic zone, in repeating or alternating sequence. A portion of effluent from the one or more anoxic zones are fed through at least one anaerobic zone to which raw or pretreated wastewater is fed and returned to the upstream portion of the anoxic zone. Additionally, return activated sludge may be recycled to one or more of the anoxic zones.

REFERENCES:
patent: 3994802 (1976-11-01), Casey et al.
patent: 4183809 (1980-01-01), Klapwijk et al.
patent: 4488968 (1984-12-01), Hong et al.
patent: 5160043 (1992-11-01), Kos
patent: 5288405 (1994-02-01), Lamb, III
"Operational Results of the Wolfsburg Wastewater Treatment Plant", R. Kayser, G. Stobbe and M. Werner, Wat. Sci. Tech., vol. 25, No. 4-5, pp. 203-209.

Affiliated with

Also associated with

Rating

Wastewater biological phosphorus removal 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 Wastewater biological phosphorus removal process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wastewater biological phosphorus removal process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-233023