| Patents for C02F 7 - Aeration of stretches of water (3,263) |
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| 04/03/2002 | CN1343183A Mixing, aeration or oxygenating method and apparatus |
| 03/20/2002 | CN2482553Y Pipe type aerator for sewage treatment |
| 03/20/2002 | CN2482552Y Combined rotary cutting aerator |
| 03/13/2002 | CN2481709Y Energy-saving charging aerator |
| 03/06/2002 | EP1183093A1 Counterbalanced dual submarine-type liquid mixer pairs |
| 02/19/2002 | US6348147 Fluid flow system for floating biological contactor |
| 02/14/2002 | DE10036884A1 Vorrichtung zur Sauerstoffanreicherung von Oberflächen-Gewässern Device for oxygen enrichment of surface waters |
| 02/13/2002 | EP1020408A4 Clean water system and its structure |
| 02/07/2002 | DE10061777C1 Oxygenation device for standing water uses stirrer fitted to driven rotating shaft enclosed by vertical pipe supported by holder |
| 02/06/2002 | CN1334250A Method for cleaning water at water inlet of water works |
| 02/05/2002 | US6344144 High-capacity bio-block aeration system for stimulating enhanced bio-activity in aerobic wastewater treatment processes |
| 01/31/2002 | US20020011441 High dissolved oxygen mixer-digester |
| 01/30/2002 | EP1176123A1 Apparatus for the oxygenation of surface waters |
| 01/23/2002 | CN2473189Y Air inlet mechanism for wind energy deep aerator of waste water treatment |
| 01/16/2002 | CN2471775Y High effective mixing and oxygen supplying mixer for treating sewage |
| 01/16/2002 | CN2471774Y High effective mixing and oxygen supplying air intake apparatus for treating sewage |
| 01/10/2002 | US20020003314 Aeration device for water and a method for manufacturing an aeration device |
| 01/02/2002 | EP1165449A1 Mixing, aeration or oxygenating method and apparatus |
| 01/02/2002 | CN2469216Y Double blade and pushing flow type high efficiency aeration pump for increasing DO in water |
| 12/27/2001 | WO2001097958A1 Fine air bubble generator and fine air bubble generating device with the generator |
| 12/19/2001 | CN2466147Y Water outlet mechanism of wind-power deep aeration device for treatment of sewage |
| 12/19/2001 | CN2466146Y Aeration disc fixing seat |
| 12/12/2001 | CN2464725Y Wind energy surface aerator for sewage treatment |
| 12/12/2001 | CN2464724Y Improved oxidation channel aerating rotary disc |
| 12/04/2001 | US6325842 Method and apparatus for aerating |
| 11/28/2001 | CN2461651Y Air pump in water |
| 11/27/2001 | US6322056 Submarine type liquid mixer with aeration |
| 11/20/2001 | US6318292 Clean water system and structure of the system |
| 10/31/2001 | CN2457143Y High efficiency mixed flow oxygen enriching aerator for waste water treatment |
| 10/24/2001 | CN2455711Y Composite underwater aeration apparatus |
| 10/19/2001 | CA2306268A1 Apparatus for aerating water |
| 10/10/2001 | CN1316393A Process for treating sewage by wind-driven oxygenation and aeration |
| 10/10/2001 | CN1316392A Wind-driven combined aerator for treating sewage |
| 09/27/2001 | US20010023842 Temporary silt guard for sewer inlet |
| 09/18/2001 | US6290855 Device for aerating a body of water, method for aerating a body of water |
| 09/13/2001 | CA2302110A1 A method of induction of water streams self-purification |
| 08/07/2001 | US6270061 Device for agitating a liquid in a reactor and for injecting a gas into this liquid |
| 08/01/2001 | CN1305961A Process for treating waste water |
| 07/25/2001 | CN1304887A Efficient flow-mixing oxygen-enriching process for treating sewage |
| 07/17/2001 | US6261445 Temporary silt guard for sewer inlet |
| 07/04/2001 | EP1112773A1 Swing type fine air bubble generating device |
| 07/04/2001 | CN2437671Y Immersed dual-purpose aerating and stirring machine |
| 07/04/2001 | CN1301671A Purifying technology for micro polluted water source |
| 06/27/2001 | CN2436502Y Hydraulic automatic air pumping mixing aerator |
| 06/13/2001 | EP1105584A1 Water circulation |
| 06/13/2001 | DE10004077C1 Water aeration assembly for ponds has submersible support frame facilitating easy lifting to surface for repositioning |
| 06/13/2001 | CN1298840A Process for treating waste water containing ink resin oil and rosin modified phenolic resin |
| 05/16/2001 | CN2430442Y Push flow aerator |
| 05/16/2001 | CN1295536A Method and pump for impelling water in waters |
| 05/15/2001 | US6231268 Apparatus and method for treatment of large water bodies by directed circulation |
| 05/02/2001 | CN1293158A Efficient mixing and oxygen-enriching equipment for treating sewage |
| 04/25/2001 | CN2427519Y Water-wheel type aerator |
| 04/25/2001 | CN2427518Y Rubber film used for oxygen increasing aeration |
| 04/18/2001 | CN2426876Y Screw propeller aeration machine |
| 04/12/2001 | WO2001025159A1 Device for aerating natural and artificial waters, containers, tanks and basins |
| 03/28/2001 | EP1086051A1 Aerated pond wastewater treatment system and process |
| 03/14/2001 | CN2423279Y High-efficient sludge circulation aeration apparatus |
| 03/01/2001 | WO2000071236A8 Counterbalanced dual submarine-type liquid mixer pairs |
| 02/20/2001 | US6190544 Aerator with float chamber and turnable inlet |
| 02/14/2001 | EP1075788A1 Operative unit for fish larvae breeding |
| 02/13/2001 | US6187194 Packaged aeration and filtration system |
| 01/10/2001 | EP1066220A1 Method and pump for impelling water in waters |
| 01/03/2001 | CN2412900Y Booster aerator |
| 12/13/2000 | CN2410032Y Photocatalysis fluidization reactor |
| 12/06/2000 | CN2409207Y Continuous porous aerator |
| 12/05/2000 | US6155794 Aspirating aerator |
| 11/30/2000 | WO2000071236A1 Counterbalanced dual submarine-type liquid mixer pairs |
| 11/23/2000 | WO2000069550A1 Swing type fine air bubble generating device |
| 11/22/2000 | CN2407000Y Rotary aeration disc |
| 11/21/2000 | US6149805 Hydrocyclones |
| 11/15/2000 | CN2405932Y Efficient biochemical jet-flow aeration tower |
| 11/14/2000 | US6145815 System for enhanced gas dissolution having a hood positioned over the impeller with segregating rings |
| 11/01/2000 | CN2403778Y Microporous aeration device |
| 10/25/2000 | CN2402675Y Improved immersed aerator |
| 10/25/2000 | CN2402674Y Plastic tank type methane producer |
| 10/04/2000 | CN2399383Y Improved diaphragm millipore aerator |
| 09/20/2000 | CN2397108Y Uniformly-limited aerated horizontal push-flow aeration pool |
| 09/14/2000 | WO2000053534A1 Mixing, aeration or oxygenating method and apparatus |
| 09/13/2000 | CN2396040Y Equipment for treating water quality |
| 09/13/2000 | CN2396039Y Reed type aerating pipe |
| 09/13/2000 | CN2396038Y Double-strip small hole aerator |
| 09/06/2000 | CN2394904Y Bilger chemical feeder for waste water purifying ship by double screw blade oxygen feeder |
| 08/30/2000 | CN2393872Y Limiter for horizontal flow aeration pool |
| 08/30/2000 | CN2393871Y High performance waste water purifying vessel |
| 08/30/2000 | CN2393870Y Multifunctional vessel for purifying waste water |
| 08/30/2000 | CN2393634Y Effective oxygen solutizer |
| 08/22/2000 | US6106729 Aeration assembly for dam sites |
| 07/19/2000 | EP1020408A1 Clean water system and its structure |
| 07/19/2000 | EP0639160B1 Apparatus for dissolving a gas into and mixing the same with a liquid |
| 07/19/2000 | CN2388195Y High-efficiency high-capacity aeration reactor |
| 07/04/2000 | US6083405 Floating water purification free-running apparatus and water purification method |
| 06/07/2000 | EP1005898A1 Enhanced gas dissolution |
| 06/07/2000 | CN2381634Y Microporous aerator for all directional aeration |
| 06/07/2000 | CN1255459A Public sewage disposal appts. |
| 05/24/2000 | CN2379466Y AC frequency changeable type automatical aeration controller |
| 05/10/2000 | CN1252389A Marine two-propeller oxygen inflator |
| 05/03/2000 | CN2376471Y Improved microporous aerator |
| 05/03/2000 | CN2376325Y Bar shape semicylinde surface microporous aeration head |
| 04/26/2000 | EP0995485A1 Apparatus for stirring a liquid in a reactor and for injecting a gas in this liquid |
| 04/25/2000 | US6054048 Water purification apparatus |