US Patent No: 7,179,370

Number of patents in Portfolio can not be more than 2000

Energy-efficient biological treatment system with filtration membrane

ALSO PUBLISHED AS: 20060213831

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Abstract

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A membrane filtration system comprising one or more submerged ultrafiltration or microfiltration membrane assemblies at ambient pressure, each membrane assembly positioned 100 240 mm from a nearest wall, baffle, or adjacent membrane assembly and no more than 1 meter above a floor and at least 150 mm below the liquid level. Mixed liquor is discharged underneath each membrane assembly to create a vertical flow velocity in a range of 1 8 mm/second along an entire length of the membrane assembly. In a sequenced batch reactor system, a coarse bubble air diffuser for scouring each membrane assembly is supplied with air only during the backwash cycle of the filtration system and not during the filtration cycle. In a membrane bioreactor system, the biological treatment section is physically separated from the filtration section and fine bubble air diffusion is used in the biological treatment section.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ITT MANUFACTURING ENTERPRISES, INC.WILMINGTON, DE1602

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Byrne, Roger J Mequon, WI 5 23
Dimitriou, Michael A Richmond, VA 6 32
George, Kenneth P Grafton, WI 5 23
Koch, III John E Wauwatosa, WI 2 10
Krall, Joseph G Grafton, WI 10 31
Rice, David Port Washington, WI 40 314
Yogendran, Velupillai Warwickshire, GB 4 20

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ZENON TECHNOLOGY PARTNERSHIP (8)
5,639,373 Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate 149 1995
6,193,890 System for maintaining a clean skein of hollow fibers while filtering suspended solids 100 1999
6,319,411 Method of maintaining clean vertical skeins of hollow fiber membranes and system therefor 59 1999
6,303,035 Immersed membrane filtration process 60 1999
6,375,848 Water filtration using immersed membranes 66 1999
6,245,239 Cyclic aeration system for submerged membrane modules 81 2000
6,656,356 Aerated immersed membrane system 64 2001
6,682,652 Apparatus for withdrawing permeate using an immersed vertical skein of hollow fiber membranes 54 2002
 
ZENON ENVIRONMENTAL INC. (5)
5,254,253 Modular shipboard membrane bioreactor system for combined wastewater streams 87 1992
5,248,424 Frameless array of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate 156 1992
5,910,250 Baffle for conversion of fine bubbles to coarse while filtering with a vertical skein of hollow fibers 105 1997
5,944,997 System for maintaining a clean skein of hollow fibers while filtering suspended solids 120 1998
6,361,695 Shipboard wastewater treatment system 68 2000
 
EVOQUA WATER TECHNOLOGIES LLC (3)
6,156,200 Gas-scrubbed hollow fiber membrane module 103 1998
6,555,005 Scouring method 76 1999
6,524,481 Apparatus and method for cleaning membrane filtration modules 72 2001
 
Aqua-Aerobic Systems, Inc. (2)
6,110,374 Treatment process for removing microbial contaminants suspended in wastewater 13 1998
6,613,222 Apparatus for the treatment of waste water 35 2001
 
BAXTER INTERNATIONAL INC. (1)
4,715,953 Hollow fiber separation device manifold 22 1983
 
CENEPRINT PTY. LTD., C/O QUEST INVESTMENTS LIMITED (1)
4,468,327 Effluent treatment 17 1983
 
Ecodyne Corporation (1)
4,414,113 Liquid purification using reverse osmosis hollow fibers 78 1982
 
Japan Organo Co., Ltd. (1)
4,886,601 Column filter using bundles of long fibers 64 1989
 
Kabushiki Kaisha Ito Tekkousho (1)
4,647,377 Filter apparatus 86 1984
 
KOCH MEMBRANE SYSTEMS GMBH (1)
2004/0035,779 Membrane filter for water treatment 9 2003
 
KUBOTA CORPORATION (1)
5,192,456 Apparatus for treating activated sludge and method of cleaning it 112 1992
 
LIFESHIELD SCIENCES LLC (1)
2004/0158,312 Braided endoluminal device having tapered filaments 5 2003
 
MITSUBISHI RAYON CO., LTD. (1)
4,605,500 Hollow-fiber filter module 30 1985
 
Mitsui Sekiyu Kagaku Kogyo Kabushiki Kaisha (1)
4,749,494 Treatment of waste water by the activated sludge process 27 1987
 
OVIVO LUXEMBOURG S.A.R.L. (1)
6,743,362 Sewage treatment process 43 2002
 
ROCHEM ULTRAFILTRATIONS SYSTEME GESELLSCHAFT FUR ABWASSERREINIGUNG MBH (1)
6,126,819 Apparatus for the treatment of liquids contaminated by foreign substances 46 1998
 
X-FLOW B.V. (1)
5,494,577 Membrane bioreactor with gas lift system 17 1994

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
EVOQUA WATER TECHNOLOGIES LLC (2)
7,569,148 Continuous membrane filtration and solids reduction 6 2007
7,931,808 Sequencing batch reactor with continuous membrane filtration and solids reduction 0 2009
 
ZENON TECHNOLOGY PARTNERSHIP (2)
8,357,299 Process control for an immersed membrane system 0 2006
7,988,855 Membrane bioreactor having single header membrane module 0 2007
 
POROUS MEDIA CORPORATION (1)
7,875,176 Membrane module for fluid filtration 0 2009
 
THERAPEUTIC PROTEINS INTERNATIONAL, LLC (1)
8,685,245 Concentrator filter 0 2011
 
ZHEJIANG OMEX ENVIRONMENTAL ENGINEERING CO., LTD. (1)
7,850,853 Floating porous hollow fiber membrane bundle 0 2005

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 20, 2014
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 20, 2018
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00