| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
|---|
| 08/15/1990 | WO1990009353A1 Fluid treatment |
| 08/15/1990 | CN2060442U Waste water biological treatment packed apparatus |
| 08/15/1990 | CN1044600A Ventilating system for liquid storing pool |
| 08/15/1990 | CA2027544A1 Fluid treatment |
| 08/14/1990 | US4948518 Method of separating a suspension of activated sludge and sewage water |
| 08/14/1990 | US4948510 Biological phosphorous removal from wastewater using multiple recombinable basins |
| 08/14/1990 | US4948509 Using flotation for degassing and separation of bacterial particles |
| 08/14/1990 | CA2010088A1 Process and installation for biological treatment, e.g. by nitrification and/or denitrification, of an effluent including nitrated pollution |
| 08/09/1990 | WO1990008742A1 Aeration system for a liquid-filled basin |
| 08/09/1990 | WO1990008741A1 Wastewater treatment process and apparatus for wastewater treatment |
| 08/09/1990 | DE3902626A1 Process for biological waste water purification |
| 08/08/1990 | EP0381305A1 Process and apparatus for the removal of contaminants and harmful substances from waste water |
| 08/08/1990 | EP0381007A1 Process and installation for the anaerobic digestion of highly charged process waters |
| 08/08/1990 | EP0380738A1 System for liquid aeration in a tank |
| 08/08/1990 | CN1044446A Swirl-aeration purifying water equipment |
| 08/06/1990 | CA2007024A1 Two-stage anaerobic/aerobic treatment process |
| 08/01/1990 | EP0379796A1 Sludge treatment |
| 07/31/1990 | US4944872 Apparatus and method for containing and processing liquids and wastes |
| 07/26/1990 | DE3938844A1 Purifying slow moving underground water by infiltration media - delivered from vertical shafts in two=stage process |
| 07/26/1990 | DE3909324C1 Microorganism and its use for microbial breakdown of petroleum hydrocarbons and mineral oil in contaminated soils, water and aerosols |
| 07/25/1990 | EP0379261A1 A process for cleaning soil |
| 07/25/1990 | EP0379204A1 Liquid oxidizing method and apparatus |
| 07/25/1990 | EP0379040A1 Apparatus and process for waste water purification |
| 07/25/1990 | EP0378735A1 Submerged biological wastewater treatment system |
| 07/19/1990 | DE4000558A1 Paper-making with application of pulp suspension to a sieve wire - with addn. of enzyme to recirculation water passing through wire to cleave deleterious dissolved substances such as hemicellulose |
| 07/19/1990 | DE3900728A1 Process and apparatus for purifying exhaust gases |
| 07/18/1990 | EP0378521A1 Water purification process |
| 07/18/1990 | EP0378288A1 Water treatment apparatus |
| 07/18/1990 | EP0377832A2 Process for the treatment of biomasses, e.g. sewage sludge, manure, etc. |
| 07/18/1990 | EP0377812A1 Process and apparatus for the purification of waste water and waste gas |
| 07/18/1990 | EP0377595A1 Process for nitrification and nitrogen removal by nitrifying bacteria |
| 07/18/1990 | CN1008811B Equipment of removing iron and manganese from ground water |
| 07/17/1990 | CA1271852A1 Rotating biological contactor |
| 07/16/1990 | CA2007774A1 Method for delivering pulp onto the wire of a paper machine |
| 07/12/1990 | DE3912420C1 Enhancement and stabilisation of waste water purificn. - using strain of Rhodopseudomonas with Chromatium and Pseudomonas Aeruginosa |
| 07/12/1990 | DE3912419C1 Mixed culture of Bacillus subtilis and Pseudomonas stutzeri spp. - useful for degradation of saponifiable fat deposits, etc. |
| 07/12/1990 | DE3908779C1 Lagoon installation |
| 07/12/1990 | DE3839028C1 Apparatus for producing liquid streams in sedimentation tanks |
| 07/11/1990 | EP0377429A1 Process for continuously performing reactions, and tubular reactor for performing the process |
| 07/11/1990 | EP0377356A1 Biological filter for the production of potable water, and related controlling process |
| 07/11/1990 | CN1043688A Compound accelerator for anaerobic digestion and its productive process |
| 07/11/1990 | CN1043687A Technology for comprehensive treatment of three kinds of waste water in reeling mill |
| 07/11/1990 | CN1008727B Biological treatment device with three-phase fluidized bed |
| 07/11/1990 | CA2007455A1 Water purification process 2 |
| 07/10/1990 | US4940547 Use of inhibitory solvents in multi-membrane bioreactor |
| 07/10/1990 | US4940546 Axial flow submerged reactor, sedimentation tank |
| 07/10/1990 | US4940545 Aerobic waste sludge digester-thickener orbital system and method |
| 07/10/1990 | US4940544 Decentral wastewater treatment process |
| 07/10/1990 | US4940540 Submerged biological wastewater treatment system |
| 07/10/1990 | US4940539 Grease trap construction |
| 07/10/1990 | CA1271572A1 Fixed bed reactor column for anaerobic decomposition processes |
| 07/05/1990 | DE3926554A1 Biomass layer thickness determination - by comparing associated rates of liq. flow and gas prodn. or consumption |
| 07/04/1990 | CN1008625B Aerobic process for two-stages treating of high loading waste water |
| 07/03/1990 | US4938867 Configuration of aeration chamber for an activated-sludge sewage treatment system |
| 07/03/1990 | CA1271274A1 System to remove contaminants from water |
| 06/28/1990 | WO1990006901A1 A method for stimulating biodegradation of halogenated aliphatic hydrocarbons |
| 06/28/1990 | WO1990006900A1 Process for the continuous monitoring of waste water |
| 06/28/1990 | WO1990006741A1 Injector-diffuser generating physical-chemical reactions and its applications for balneo-hydrotherapy and treatment of fluids |
| 06/27/1990 | CN2058675U Lift microporosity aerator |
| 06/27/1990 | CN1008535B Process and application for fixing microorganism on preferable carrier |
| 06/26/1990 | US4936996 Method of processing biodegradable organic material |
| 06/26/1990 | US4936994 Application of cellulase to control industrial slime |
| 06/26/1990 | US4936983 Sewage sludge treatment with gas injection |
| 06/26/1990 | US4936982 Intrachannel clarifier |
| 06/21/1990 | DE3842734A1 Verfahren zum kontinuierlichen ueberwachen von abwasser A method for continuously supervise of wastewater |
| 06/21/1990 | DE3842295A1 Trickling filter for the biological treatment of water |
| 06/21/1990 | DE3841994A1 Gas-introduction apparatus for wastewater (effluent) sedimentation tanks |
| 06/21/1990 | CA2006171A1 Process for the continuous performance of reactions |
| 06/20/1990 | EP0373503A1 Agitator-mixer for biogas systems |
| 06/19/1990 | US4935130 Equipment for biological water treatment, in particular for denitrification of raw water to produce potable water |
| 06/19/1990 | CA2005869A1 Method for continuous monitoring of effluent |
| 06/15/1990 | CA2002439A1 Sludge treatment |
| 06/14/1990 | WO1990006288A1 Method and apparatus for treating water |
| 06/14/1990 | WO1990006175A1 Packing in or for a vessel |
| 06/13/1990 | EP0373108A2 Process for bleaching pulp |
| 06/13/1990 | EP0372520A2 Slime and deposits controlling process in industrial plants |
| 06/13/1990 | EP0372158A1 Biofouling resistant apparatus for wastewater treatment |
| 06/13/1990 | CN1008357B Apparatus for purifying water, comprising an upflow reactor with an influent distribution system to be connected to a central water supply system |
| 06/12/1990 | US4933076 Multi-unit flush system having carbon adsorber column in calcium carbonate bed |
| 06/12/1990 | CA1270149A1 Method of supplying air masses and producing jets of water |
| 06/12/1990 | CA1270111A1 Method of and apparatus for treating and subdividing a liquid using centripetal force |
| 06/07/1990 | DE3840517A1 Process and apparatus for the production of energy from biomass |
| 06/06/1990 | EP0371385A1 Method and apparatus for treating waste material |
| 06/05/1990 | US4931401 For liquids containing organic matter; gas-forming microorganisms; pulp, paper, cheese industry |
| 06/05/1990 | US4931262 Method of treating H2 S containing gases |
| 06/05/1990 | US4931183 Process and apparatus for the biological purification of water |
| 05/31/1990 | WO1990005708A1 Method for degradation of halogenated hydrocarbons using a methane-oxidizing bacterium, which produces methane monooxygenase |
| 05/31/1990 | WO1990005707A1 Process and device for operating an aeration system in a tank |
| 05/31/1990 | WO1990005583A1 Liquid-gas mixing device |
| 05/31/1990 | WO1990005580A1 Flow discharge valve |
| 05/31/1990 | DE3840123A1 Aerobic biological waste-water purification |
| 05/31/1990 | DE3838864A1 Process for precipitating out and flocculating dissolved water and waste water constituents and suspended matter in water treatment |
| 05/29/1990 | US4929484 Filling material for percolating filters for the treatment of liquids and process for producing and assembling it |
| 05/29/1990 | US4929397 Apparatus for aerating water |
| 05/29/1990 | US4929349 Bio-filtration apparatus and method for wastewater treatment |
| 05/29/1990 | CA2003606A1 Method and apparatus for treating waste material |
| 05/29/1990 | CA1269767A1 Waste water treatment process |
| 05/28/1990 | CA2004008A1 Packing in or for a vessel |
| 05/24/1990 | CA2003679A1 Dry filter for the treatment of water |
| 05/23/1990 | EP0369455A1 Process and device for biological waste water treatment |