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1.发明公开
公开(公告)号：EP1140706A1
公开(公告)日：2001-10-10
申请号：EP99960738.5
申请日：1999-12-17
CPC分类号： C02F3/1273 , C02F1/444 , C02F3/006 , C02F3/20 , C02F3/223 , C02F3/301 , C02F3/302 , C02F2101/16 , C02F2209/006 , C02F2209/04 , C02F2209/14 , C02F2209/15 , C02F2209/22 , C02F2209/44 , Y02W10/15
摘要： A single tank submerged membrane bioreactor for treating feed water having unacceptable levels of ammonia or total nitrogen has both a membrane scouring bubble supply and an oxygenating bubble supply. The membrane scouring bubble supply continuously provides large scouring bubbles to clean the membranes. Permeate is continuously withdrawn from the membranes at a high rate but the large scouring bubbles do not transfer sufficient oxygen to the mixed liquor to create aerobic conditions in the reactor. The oxygenating bubble supply is operated to provide small bubbles of air or oxygen that intermittently produce aerobic conditions in a significant part of the mixed liquor. Alternating aerobic and anoxic conditions occur in a significant portion of the tank suitable for nitrification and denitrification. The level of dissolved oxygen (DO) or oxygen reduction potential (ORP) in the tank is measured by sensors and determines when the oxygenating bubble supply will be turned on or off between set minimum and maximum time limits.
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2.发明公开
公开(公告)号：EP1423338A2
公开(公告)日：2004-06-02
申请号：EP01909364.0
申请日：2001-02-19
CPC分类号： C02F3/30 , B01D53/22 , B01D53/85 , B01D63/06 , B01D63/10 , B01D2313/14 , C02F3/102 , C02F3/20 , C02F3/208 , C02F3/2806 , C02F3/308 , C02F2101/30 , Y02A50/2359 , Y02E50/343 , Y02W10/15 , Y10S210/903 , Y10S210/906
摘要： An apparatus to transfer gas to or from a liquid has a flexible and oxygen permeable but liquid water impermeable membrane, a flexible and gas permeable spacer, an inlet conduit, an outlet conduit and a non-rigid restraint system. When used for treating wastewater, an aerobic biofilm is cultured adjacent the planar elements, an anoxic biofilm is cultivated adjacent the aerobic biofilm and the wastewater is maintained in an anaerobic state. A first reactor for treating wastewater has an anaerobic section, a plurality of gas transfer membrane modules, and an aerobic section. A biofilm is cultivated on the surface of the gas transfer membranes in fluid communication with the anaerobic section. Biological reduction of COD, BOD, nitrogen and phosphorous are achieved. In a second reactor, phosphorous is also removed chemically in a precipitation branch.
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3.发明公开
公开(公告)号：EP1838630A1
公开(公告)日：2007-10-03
申请号：EP05774824.6
申请日：2005-08-12
CPC分类号： C02F3/2806 , B01F13/02 , C02F3/102 , Y02E50/343 , Y02W10/15
摘要： A hollow gas transfer fibre is arranged in tows and potted into a module. The module may be used to treat wastewater by supplying hydrogen containing gas via the interior of the fibers to a biofilm present on an exterior surface of the fibers.
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4.发明公开NANOFILTRATION SYSTEM FOR WATER SOFTENING WITH INTERNALLY STAGED SPIRAL WOUND MODULES 审中-公开对于内部NANO，徐世过滤系统加强螺旋绕组模块
公开(公告)号：EP1603659A2
公开(公告)日：2005-12-14
申请号：EP04719898.1
申请日：2004-03-12
CPC分类号： C02F1/008 , B01D61/025 , B01D61/027 , B01D61/04 , B01D61/08 , B01D61/10 , B01D61/12 , B01D61/145 , B01D61/18 , B01D63/10 , B01D63/103 , B01D65/02 , B01D2311/04 , B01D2313/086 , B01D2313/143 , B01D2313/146 , B01D2319/06 , B01D2321/16 , B01D2321/168 , C02F1/44 , C02F1/441 , C02F1/442 , C02F1/444
摘要： A spiral wound membrane filtration module is operated with a single pass through the feed side and without cross-flow on the permeate side. Recovery is 70% or more and feed side velocities are between 0.05 and 0.4 feet per second. The module may have dams in the spacer material on the shell/feed side to provide a feed path with multiple passes across the membrane leaves. A small-scale system for using such a module, for example to soften and filter water with a nanofiltration membrane, is described. The system includes a chemical cleaning apparatus and process. Multiple membrane materials can be used in order to adapt the module selectivity.
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5.发明公开MULTI-STAGE FILTRATION AND SOFTENING MODULE AND REDUCED SCALING OPERATION 审中-公开多级过滤，和软化模块ENTKALKUNGSBETRIEB
公开(公告)号：EP1305106A1
公开(公告)日：2003-05-02
申请号：EP01949163.8
申请日：2001-06-28
发明人： HUSAIN, Hidayat , BEHMANN, Henry , COTE, Pierre , POTTINGER, Ian , MURPHY, Ella
IPC分类号： B01D61/04 , B01D61/08 , B01D61/02 , B01D63/02 , B01D63/04 , B01D65/02 , B01D65/06 , C02F1/44 , C02F5/00
CPC分类号： B01D61/025 , B01D61/022 , B01D61/027 , B01D61/04 , B01D61/08 , B01D63/021 , B01D63/022 , B01D63/04 , B01D65/02 , B01D2311/04 , B01D2321/02 , B01D2321/162 , B01D2321/168 , C02F1/441 , C02F1/442 , C02F5/00 , B01D2311/14
摘要： A filtration module has a plurality of hollow fiber nanofiltration or reverse osmosis membranes suspended between a pair of opposed headers. The lumens of the membranes are the retentate or feed side. The membranes are arranged in groups, such as sectors of a cylinder, and form preceding or succeeding stages. A permeate collection plenum is in direct fluid communication with each stage. The stages are connected by caps typically having dividers located at the ends of the module. The module is used to filter water and, when optionally fitted with hollow fibre membranes adapted to selectively rehect hardness causing salts, is used to remove hardness. Methods of cleaning using acidic solutions or gaseous carbon dioxide are discussed. Cleaning methods include adding acid to the feed water continuously or periodically during permeation, flushing the module with an acidic solution while not permeating and holding an acidic solution or gaseaous carbon dioxide in the module for a period of time while not permeating followed by flushing. A filtration system is also disclosed.
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公开(公告)号：EP1594807A1
公开(公告)日：2005-11-16
申请号：EP04710766.9
申请日：2004-02-13
CPC分类号： C02F3/1273 , B01D63/02 , B01D63/021 , B01D63/022 , B01D63/027 , B01D63/04 , B01D69/084 , B01F3/04269 , B01F2003/04382 , C02F1/78 , C02F3/102 , C02F3/103 , C02F3/208 , C02F3/302 , C02F2303/20 , Y02W10/15
摘要： A membrane supported biofilm reactor uses modules having fine, hollow fibres (19), for example, made from dense wall Poly methylpentene (PMP) used in tows or formed into a fabric (26). In one module, one or more sheets of the fabric are potted into a module to enable oxygen containing gas to be supplied to the lumens of the hollow fibres. Various reactors and processes, for example to treat wastewater, using such modules are described. Mechanical, chemical and biological methods are used to control the thickness of the biofilm (30).
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公开(公告)号：EP1140329A1
公开(公告)日：2001-10-10
申请号：EP00963837.0
申请日：2000-09-29
CPC分类号： B01D61/147 , B01D61/145 , B01D61/18 , B01D63/024 , B01D65/02 , B01D2321/04 , B01D2321/10 , B01D2321/12 , B01D2321/168 , B01D2321/2066 , B01D2321/2083 , C02F1/444
摘要： A method and apparatus of purifying feedwater to remove impurities including suspended solids therefrom, the method suitable for using in-line water pressure to permeate water through hollow fiber membranes and to backflush the membranes to remove solids collected or deposited thereon.
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