Method for reducing production of wastewater treatment...

Details Method for reducing production of wastewater treatment... Method for reducing production of wastewater treatment...

2008-04-15

2008-04-15

Barry, Chester T. (Department: 1797)

Liquid purification or separation

Processes

Treatment by living organism

Reexamination Certificate

active

10528692

ABSTRACT:
A method for reducing the amount of wastewater treatment station sludge first performs wastewater purification with fixed biological cultures from which excess sludge is extracted intermittently during phases of washing and unclogging. Then, the water from the washing phase that provides fixed biological cultures is subjected to biological activated sludge treatment, the outlet of this stage does not recycle effluent to the front end of the water treatment line. The wastewater is then subjected to a stage of reduced sludge production (RPB), selectively, by thermophilic enzymatic action or by partial oxidation by ozone introduced by mechanical stirring, this stage being supplied by quantities of sludge from the step of biological treatment by activate sludge, the substrate source for the bacteria of the biological treatment including organic material derived from lysed bacterial cells induced during the RSP stage.

REFERENCES:
patent: 3718582 (1973-02-01), Smith et al.
patent: 4370235 (1983-01-01), Shioya et al.
patent: 5013429 (1991-05-01), Krofta
patent: 5141646 (1992-08-01), Rozich
patent: 6224769 (2001-05-01), Hasegawa et al.
patent: 0 384 162 (1990-08-01), None
patent: 1 254 865 (2002-11-01), None
patent: 2 766 813 (1999-02-01), None
patent: 10 052697 (1998-02-01), None
patent: 10052697 (1998-02-01), None
patent: 10 057994 (1998-03-01), None
patent: 10057994 (1998-03-01), None
patent: 10 137780 (1998-05-01), None
patent: 10137780 (1998-05-01), None
patent: WO 99 41205 (1999-08-01), None

Affiliated with

Also associated with

Rating

Method for reducing production of wastewater treatment... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for reducing production of wastewater treatment..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for reducing production of wastewater treatment... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3908610