Liquid purification or separation – Gravitational separator – Material supply distributor
Reexamination Certificate
2007-11-06
2009-12-29
Upton, Christopher (Department: 1797)
Liquid purification or separation
Gravitational separator
Material supply distributor
C210S528000, C210S530000
Reexamination Certificate
active
07637379
ABSTRACT:
The improved circular secondary clarifier of the present invention requires less surface area and low HRT and provides efficient solids-liquid separation. The improved clarifier has better SS and BOD reduction and provides high under flow solids concentrations, as compared to conventional secondary clarifiers. The improved clarifier is even capable of treating wastewaters containing low MLSS concentration. One of the biggest advantages of improved clarifier is that it does not require a separate sump cum pump house as it removes the settled sludge using suction mechanism thereby reduces capital and recurring cost. Further, it provides natural flocculation, which is essential for agglomeration of solids and increases particle size referred to as ‘floc’ and eliminates provision for a separate flocculation facility thereby reduces capital and recurring costs.
REFERENCES:
patent: 2078266 (1937-04-01), Morehead
patent: 2098467 (1937-11-01), Sayers et al.
patent: 2197725 (1940-04-01), Hunter
patent: 2236128 (1941-03-01), Poole
patent: 2649412 (1953-08-01), Kivari et al.
patent: 2880877 (1959-04-01), Sambraus
patent: 2980934 (1961-04-01), Steindorf
patent: 3353676 (1967-11-01), Hirsch
patent: 3353683 (1967-11-01), Geiger
patent: 3589519 (1971-06-01), Bendel
patent: 3926805 (1975-12-01), Walker
patent: 4005019 (1977-01-01), Parlette
patent: 4761239 (1988-08-01), Wardell
patent: 5306422 (1994-04-01), Krofta
patent: 5422006 (1995-06-01), Huber
patent: 5422017 (1995-06-01), Felder et al.
patent: 5961826 (1999-10-01), Kim
patent: 6099743 (2000-08-01), Pedersen
Clarifier Design Manual of Practice, FD-8, WPCF, (1985, 2005); p. 401.
Clarifier Design Manual of Practice, FD-8, WPCF, (1985, 2005); pp. 51-52.
Wastewater Engineering, Treatment and Reuse, IV edition (2003), Metcalf & Eddy inc. 3 pages.
Wastewater Engineering, Treatment and Reuse, IV edition (2003), Metcalf & Eddy inc. pp. 838-839.
Devotta Sukumar
Kaul Santosh Narain
Nandy Tapas
Pophali Girish Ramesh
Council of Scientific & Industrial Research
St. Onge Steward Johnston & Reens LLC
Upton Christopher
LandOfFree
Circular secondary clarifier for wastewater treatment and an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circular secondary clarifier for wastewater treatment and an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circular secondary clarifier for wastewater treatment and an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4136051