US Patent No: 7,018,533
Number of patents in Portfolio can not be more than 2000
High solids module
Stats
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Mar 28, 2006
Issued date -
Mar 16, 2004
filing date -
10/802,691
serial no -
In Force
status
Importance
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Abstract
A method of cleaning a membrane filtration module is disclosed. The module comprises at least one or more longitudinally extending membranes located in a feed-containing vessel. The membranes have a permeable wall which is subjected to a filtration operation wherein feed containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall. The method comprises the steps of suspending the filtration operation; performing a cleaning process on the membrane wall to dislodge contaminant matter from the membrane wall into liquid surrounding the membrane: performing a sweep of the feed-containing vessel substantially parallel to the longitudinally extending membranes to remove the liquid containing the dislodged contaminant matter, at least in part, through an opening in a header or other part of the module, and then recommencing the filtration operation.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,643,455 Concentration of solids in a suspension using hollow fibre membranes | 90 | 1995 | |
| 5,918,264 Fiber monitoring system | 42 | 1995 | |
| 6,159,373 Cleaning of hollow fibre membranes | 41 | 1997 | |
| 6,077,435 Filtration monitoring and control system | 71 | 1998 | |
| 6,156,200 Gas-scrubbed hollow fiber membrane module | 87 | 1998 | |
| 6,254,773 Microporous membrane filtration assembly | 39 | 1999 | |
| 6,555,005 Scouring method | 61 | 1999 | |
| 6,202,475 Predicting logarithmic reduction values | 42 | 1999 | |
| D478913 Manifold header | 32 | 2000 | |
| D462699 Manifold header cap | 39 | 2000 | |
| 6,524,481 Apparatus and method for cleaning membrane filtration modules | 55 | 2001 | |
| 6,641,733 Apparatus and method for cleaning membrane filtration modules | 41 | 2002 | |
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| 5,783,083 Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces | 119 | 1996 | |
| 6,042,677 Potted header for hollow fiber membranes and method for making it | 70 | 1999 | |
| RE37549 Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate | 63 | 1999 | |
| 6,354,444 Hollow fiber membrane and braided tubular support therefor | 61 | 1999 | |
| 6,193,890 System for maintaining a clean skein of hollow fibers while filtering suspended solids | 83 | 1999 | |
| 6,303,035 Immersed membrane filtration process | 45 | 1999 | |
| 6,547,968 Pulsed backwash for immersed membranes | 10 | 1999 | |
| 6,245,239 Cyclic aeration system for submerged membrane modules | 61 | 2000 | |
| 6,294,039 Potted header for hollow fiber membranes | 54 | 2000 | |
| 6,550,747 Cyclic aeration system for submerged membrane modules | 48 | 2001 | |
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| 5,227,063 Tubular membrane module | 45 | 1990 | |
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| 5,182,019 Cartridge of hybrid frameless arrays of hollow fiber membranes and module containing an assembly of cartridges | 56 | 1992 | |
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| 5,403,479 In situ cleaning system for fouled membranes | 84 | 1993 | |
| 5,910,250 Baffle for conversion of fine bubbles to coarse while filtering with a vertical skein of hollow fibers | 87 | 1997 | |
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| 4,767,539 Cleaning of hollow fiber filters utilized in lumenal gas flow | 58 | 1987 | |
| 4,876,012 Hollow fibre filter cartridge and header | 46 | 1988 | |
| 5,024,762 Concentration of solids in a suspension | 48 | 1990 | |
| 2002/0148,767 Membrane filtration manifold system | 38 | 2001 | |
| 2003/0178,365 Scouring method | 38 | 2003 | |
| 2003/0226,797 Fibre membrane arrangement | 35 | 2003 | |
| 2004/0084,369 Scouring method | 29 | 2003 | |
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| 4,793,932 Variable volume filter or concentrator | 53 | 1986 | |
| 4,935,143 Cleaning of filters | 52 | 1988 | |
| 4,921,610 Cleaning of hollow fibre filters | 76 | 1988 | |
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| 4,609,465 Filter cartridge with a connector seal | 109 | 1984 | |
| 5,417,101 Method and apparatus for testing the integrity of filter elements | 64 | 1992 | |
| 6,083,393 Hydrophilic membrane | 45 | 1997 | |
| 6,039,872 Hydrophilic membrane | 47 | 1998 | |
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| 5,194,149 Filter cartridge manifold | 44 | 1991 | |
| 5,405,528 Modular microporous filter assemblies | 62 | 1992 | |
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| 5,137,631 Multiple bundle permeator | 56 | 1991 | |
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| 5,470,469 Hollow fiber cartridge | 85 | 1994 | |
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| 5,209,852 Process for scrubbing porous hollow fiber membranes in hollow fiber membrane module | 79 | 1991 | |
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| 4,218,324 Filter element having removable filter media member | 56 | 1979 | |
| 4,812,235 Filter element assembly replaceable mesh pack | 48 | 1983 | |
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| 5,221,478 Chromatographic separation using ion-exchange resins | 41 | 1992 | |
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| D396726 Combined air intake manifold and filter | 33 | 1997 | |
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| 5,393,433 Method using separation membranes to treat a fluid containing matter in suspension and in solution | 31 | 1993 | |
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| 4,385,150 Organic solution of fluorinated copolymer having carboxylic acid groups | 46 | 1981 | |
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| 4,248,648 Method of repairing leaks in a hollow capillary fiber diffusion device | 48 | 1979 | |
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| 6,440,303 Fluid filter | 46 | 2001 | |
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| 5,389,260 Brine seal for tubular filter | 64 | 1993 | |
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| 4,718,270 Porosimeter and methods of assessing porosity | 54 | 1985 | |
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| 5,198,116 Method and apparatus for measuring the fouling potential of membrane system feeds | 45 | 1992 | |
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| 4,779,448 Photoelectric bubble detector apparatus and method | 48 | 1986 | |
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| 4,511,471 Filter apparatus for continuously thickening suspensions | 45 | 1983 | |
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| 4,876,006 Hollow fiber filter device | 100 | 1988 | |
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| 4,673,507 Fluid treatment process and apparatus | 50 | 1985 | |
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| 5,005,430 Automated membrane filter sampler | 48 | 1990 | |
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| 4,688,511 Dirt accumulation indicator for air intake filters | 65 | 1985 | |
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| 5,151,193 Polymer membranes on the basis of polyvinylidene fluoride, a process for the production thereof and their use | 47 | 1990 | |
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| 4,650,596 Pour point depressants for paraffin solutions | 30 | 1985 | |
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| 4,193,780 Air filter construction | 56 | 1978 | |
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| 4,540,490 Apparatus for filtration of a suspension | 70 | 1983 | |
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| 4,647,377 Filter apparatus | 71 | 1984 | |
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| 4,756,875 Apparatus for filtering water containing radioactive substances in nuclear power plants | 55 | 1986 | |
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| 4,797,211 Cross flow microfilter | 89 | 1986 | |
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| 5,192,456 Apparatus for treating activated sludge and method of cleaning it | 96 | 1992 | |
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| 4,547,289 Filtration apparatus using hollow fiber membrane | 70 | 1984 | |
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| 4,670,145 Multiple bundle fluid separation apparatus | 63 | 1986 | |
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| 5,066,402 Method of changing operating modes in automatic water filtering apparatus using tubular membranes | 84 | 1990 | |
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| 4,192,750 Stackable filter head unit | 79 | 1978 | |
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| 4,614,109 Method and device for testing the permeability of membrane filters | 64 | 1985 | |
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| 4,632,745 Electrodeionization apparatus | 136 | 1985 | |
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| 5,480,553 Hollow fiber membrane module | 85 | 1993 | |
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| 4,660,411 Apparatus for measuring transmission of volatile substances through films | 51 | 1985 | |
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| 4,846,970 Cross-flow filtration membrane test unit | 67 | 1987 | |
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| 5,607,593 Installation for making water potable with submerged filtering membranes | 104 | 1994 | |
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| 6,146,747 Highly porous polyvinylidene difluoride membranes | 59 | 1998 | |
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| 5,138,870 Apparatus for measuring water vapor permeability through sheet materials | 49 | 1991 | |
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| 4,810,384 Hydrophilic PVDF semipermeable membrane | 63 | 1987 | |
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| 5,361,625 Method and device for the measurement of barrier properties of films against gases | 53 | 1993 | |
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| 5,104,546 Pyrogens separations by ceramic ultrafiltration | 62 | 1990 | |
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| 5,477,731 Method and apparatus for detecting a fouled fluid filter | 54 | 1994 | |
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| 4,384,474 Method and apparatus for testing and using membrane filters in an on site of use housing | 59 | 1981 | |
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| 4,188,817 Method for detecting membrane leakage | 46 | 1978 | |
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| 4,451,369 Fluid separation apparatus | 93 | 1981 | |
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| 4,687,561 Process and apparatus for treatment of fluids, particularly demineralization of aqueous solutions | 88 | 1985 | |
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| 5,066,375 Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack | 92 | 1990 | |
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| 5,401,401 Hang on tank canister filter | 59 | 1993 | |
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| 4,636,296 Process and apparatus for treatment of fluids, particularly desalinization of aqueous solutions | 87 | 1985 | |
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| 5,531,900 Modification of polyvinylidene fluoride membrane and method of filtering | 52 | 1994 | |
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| 4,784,771 Method and apparatus for purifying fluids | 66 | 1987 | |
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| 5,076,925 Process for preparing a microporous membrane and such a membrane | 68 | 1990 | |
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| 4,763,612 Intake system for internal combustion engine | 48 | 1987 | |
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| 4,642,182 Multiple-disc type filter with extensible support | 61 | 1985 | |
| 4,999,038 Filter unit | 77 | 1989 | |
| H1045 Air bubble leak detection test device | 36 | 1990 | |
| 5,364,527 Apparatus and process for treating water | 40 | 1992 | |
| D396046 Steer device for an outboard motor | 32 | 1996 | |
| 6,048,454 Oil filter pack and assembly | 62 | 1997 | |
| 5,942,113 Solid-liquid separating filter medium for sewage, waste water, etc | 42 | 1997 | |
| D400890 Automotive manifold | 38 | 1997 | |
| 2004/0145,076 Scouring method | 29 | 2004 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 28, 2013 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 28, 2017 |
| 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 |