Wastewater treatment system and method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO

7455765

APP PUB NO

20070170112A1

SERIAL NO

11339186

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The invention is directed to a wastewater treatment system having an anoxic biological treatment zone, an aerobic biological treatment zone and a separator. The concentration of oxygen in streams within the system is strategically managed for improved removal of nutrient from the wastewater. A source of biodegradable carbon may be introduced to reduce the concentration of oxygen within the system. An effective treatment time under anoxic or aerobic conditions may further be varied.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
EVOQUA WATER TECHNOLOGIES LLCALPHARETTA, GA310

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Elefritz, Robert A Ormond Beach, FL 3 53
Liu, Wenjun King of Prussia, PA 24 254

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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5135663 Method of treating (meth)acrylic monomer-containing wastewater 53 1991
 
LANXESS DEUTSCHLAND GMBH (1)
6387189 Surface-cleaning method 47 1999
 
KOCH MEMBRANE SYSTEMS, INC. (2)
6074718 Self supporting hollow fiber membrane and method of construction 58 1996
6890435 Hollow fiber microfiltration membranes and a method of making these membranes 70 2002
 
SCIMAT LIMITED (1)
5198162 Microporous films 62 1989
 
TORAY INDUSTRIES, INC. (2)
5286324 Polytetrafluoroethylene resin porous membrane, separator making use of the porous membrane and methods of producing the porous membrane and the separator 59 1992
6468430 Method for inhibiting growth of bacteria or sterilizing around separating membrane 55 2000
 
MARY C. MARTIS (1)
5733456 Environmental control for biological nutrient removal in water/wastewater treatment 99 1997
 
The B. F. Goodrich Company (1)
4496470 Cleaning composition 63 1982
 
THERMA-WAVE, INC. (1)
6952258 Wafer chuck with integrated reference sample 41 2004
 
UNITED PET GROUP, INC. (1)
5401401 Hang on tank canister filter 82 1993
 
EASTMAN KODAK COMPANY (1)
6721529 Release agent donor member having fluorocarbon thermoplastic random copolymer overcoat 74 2001
 
DOW GLOBAL TECHNOLOGIES INC. (1)
6337018 Composite membrane and method for making the same 81 2000
 
Gie Anjou-Recherche (1)
5271830 Water treatment installation for a tangential filtration loop 57 1990
 
SIEMENS INDUSTRY, INC. (4)
5401405 Combined air/water backwash in a travelling bridge filter 57 1993
5643455 Concentration of solids in a suspension using hollow fibre membranes 114 1995
2006/0261,007 Methods of cleaning membrane modules 40 2004
2006/0000,775 Scouring method 41 2005
 
Japan Organo Co., Ltd. (3)
4886601 Column filter using bundles of long fibers 69 1989
5209852 Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module 109 1991
5151191 Filtration process using hollow fiber membrane module 90 1991
 
CYNARA COMPANY, THE (1)
5192478 Method of forming tubesheet for hollow fibers 63 1992
 
BDF IP HOLDINGS LTD. (1)
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U.S. FILTER WASTEWATER GROUP, INC. (10)
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4767539 Cleaning of hollow fiber filters utilized in lumenal gas flow 80 1987
4876012 Hollow fibre filter cartridge and header 65 1988
5024762 Concentration of solids in a suspension 70 1990
2002/0148,767 Membrane filtration manifold system 58 2001
2003/0178,365 Scouring method 57 2003
2003/0226,797 Fibre membrane arrangement 55 2003
2004/0084,369 Scouring method 48 2003
2004/0178,154 Scouring method 40 2004
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USF FILTRATION AND SEPARATIONS GROUP INC. (2)
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5906742 Microfiltration membranes having high pore density and mixed isotropic and anisotropic structure 97 1997
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SIEMENS WATER TECHNOLOGIES LLC (1)
8758622 Simple gas scouring method and apparatus 2 2005
 
EVOQUA WATER TECHNOLOGIES LLC (30)
7938966 Backwash method 28 2003
8268176 Backwash 0 2004
8808540 Module cleaning method 0 2004
8758621 Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis 1 2005
8790515 Reduction of backwash liquid waste 1 2005
8506806 Methods and apparatus for removing solids from a membrane module 2 2005
8377305 Continuously variable aeration 0 2005
8496828 Cleaning in membrane filtration systems 0 2005
8048306 Scouring method 3 2005
8858796 Assembly for water filtration using a tube manifold to minimise backwash 0 2006
8293098 Infiltration/inflow control for membrane bioreactor 0 2007
8182687 Methods of minimising the effect of integrity loss in hollow fibre membrane modules 0 2008
8318028 Infiltration/inflow control for membrane bioreactor 0 2008
7722769 Method for treating wastewater 33 2008
8622222 Membrane cleaning with pulsed airlift pump 1 2008
7718057 Wastewater treatment system 29 2008
8512568 Method of cleaning membrane modules 0 2009
8382981 Frame system for membrane filtration modules 5 2009
8652331 Membrane system backwash energy efficiency 0 2009
8956464 Method of cleaning membranes 0 2010
8287743 Membrane cleaning with pulsed airlift pump 3 2010
8518256 Membrane module 2 2011
9022224 Fluid control manifold for membrane filtration system 0 2011
8372276 Membrane cleaning with pulsed airlift pump 1 2011
8623202 Infiltration/inflow control for membrane bioreactor 0 2012
9023206 Frame system for membrane filtration modules 0 2013
8840783 Water treatment membrane cleaning with pulsed airlift pump 0 2013
9533261 Potting method 0 2013
9206057 Membrane cleaning with pulsed airlift pump 0 2014
8894858 Method and assembly for water filtration using a tube manifold to minimize backwash 0 2014
 
DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD. (1)
* 2014/0097,132 Membrane Bioreactor System Using Reciprocating Membrane 0 2013
 
In-Pipe Technology, Inc. (1)
8828229 Distributed facultative bacteria water treatment system with membrane biological reactor package plant augmentation 0 2011
 
ENERGETIX, LLC (1)
* 2010/0184,177 PLASTIC DISPOSABLE REACTOR SYSTEM 4 2010
* Cited By Examiner

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