Patents
Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453)
08/1993
08/19/1993WO1993015831A1 Sorbent for immobilization of toxic and contaminating substances
08/19/1993WO1993015818A1 Apparatus and method for treatment of waste water sludge
08/19/1993WO1993015616A1 Method for treatment of potato fruit water
08/19/1993DE4204607A1 Treating effluent or waste water with suspended or immobilised microorganisms - preceded by electrical or mechanical prodn. of oscillations accompanied by cavitation
08/19/1993DE4204590A1 Biological sewage cleaning process - has smaller contact basin to feed sewage at high pump speeds into aeration basin for small plants
08/19/1993CA2129672A1 Method for treatment of potato fruit water
08/18/1993EP0555743A1 Loop reactor for biological purification of polluted water
08/17/1993USRE34343 Cationic polymer of dialkylamine and epichlorohydrin
08/17/1993CA1321428C Process for the intermittent aeration of liquids and aeration device for use in such process
08/17/1993CA1321427C Anaerobic process
08/11/1993EP0554471A1 Packing element for heat- or mass exchanger or bioreactor system
08/11/1993CN2139937Y Assembly gas. liguid. solid three-phase seperator of anaerobic reactor
08/10/1993US5234632 Aeration apparatus for liquid
08/10/1993US5234595 Horizontal baffle between aerobic and anoxic layers; controlled ammonia oxidation and reduction of formed nitrogen oxides
08/10/1993US5234580 Decanting apparatus with float supported submerged pump
08/10/1993CA1321135C Process for dissolving a gas in a liquid
08/05/1993WO1993015026A1 Effluent treatment process
08/05/1993WO1993015025A1 Granulating method by aerobic biological treatment of organic waste water and aerobic biological treatment method for organic waste water
08/05/1993WO1993015024A1 Reactor for the biological treatment of waste water
08/05/1993WO1993015023A1 Biological and chemical single step purification of discharged water
08/05/1993DE4300353A1 Reclamation of contaminated soil - by injecting oxygen@, microorganisms and/or nutrients into sealed area
08/05/1993DE4203103A1 Biological cleaning of waste water - where biological substrate is contained in perforated hollow bodies which are attached to endless belt or chain and pass in and out of water
08/05/1993CA2129538A1 Reactor for the biological treatment of waste water
08/05/1993CA2128498A1 Effluent treatment process
08/04/1993EP0528901A4 Improved method for solute transfer between solid and liquid phases
08/03/1993US5232596 Biodegradation of sludge and contaminated soils in aqueous slurries by microorganisms which metabolize hydrocarbons to form emulsifiers or flocculants
08/03/1993US5232586 Floating media hourglass biofilter
08/03/1993US5232585 Denitrification system
08/03/1993US5232583 Controlled nitrification, denitrification
08/03/1993US5232582 Water purifying apparatus having moss-preventing filter and monitored air injection
07/1993
07/29/1993DE4213846C1 Redn. of nitrogen content of foul sludge - by passing sludge through alternating nitrification-denitrification stage between decomposition and water extn.
07/28/1993EP0552594A1 A pressurised percolating filter of the type used for the regeneration of water in aquariums
07/28/1993EP0552496A1 Module for a reactor for anaerobic waste water purification
07/27/1993US5230838 Fine bubble generating apparatus
07/27/1993US5230803 Biodegradation, membrane separation, adsorption
07/27/1993US5230794 Anaerobic treatment of waste water, three phase separator
07/25/1993CA2088029A1 Module for a reactor for anaerobic waste treatment
07/22/1993WO1993014046A1 Fertilizer mixture and process for production of the fertilizer mixture
07/22/1993WO1993014036A1 Process for the denitrification of sewage
07/22/1993WO1993014035A1 Apparatus for the oxidation of water
07/22/1993WO1993013883A1 Bioreduction of metal oxides and oxyanions by photosynthetic bacteria
07/22/1993WO1993013725A1 Magnetically modification of organism metabolism
07/22/1993DE4201167A1 Biological sewage treatment reactor - directs gas fluid flow generally down through reactor centre at high turbulence and back upwards at low turbulence
07/22/1993DE4201166A1 Simultaneous treatment of organic waste prods., e.g. sewage - by subjecting streams of coarse prod. free waste to hydrolysing rotting, densifying and composting
07/22/1993CA2128091A1 Magnetically modification of organism metabolism
07/22/1993CA2127976A1 Bioreduction of metal oxides and oxyanions by photosynthetic bacteria
07/21/1993EP0552134A1 A sewage biological purification system
07/21/1993EP0551978A2 Ground contamination remediation process and apparatus
07/21/1993CA2086726A1 Pressurized percolating filter of the type used for the regeneration of water in aquariums
07/20/1993US5228998 Floating biological contactor
07/20/1993US5228997 Aerobic biological nitrification using biomass granulates
07/20/1993US5228996 Activated sludge, modified sequencing batch reactor process
07/20/1993US5228995 Biochemically enhanced hybrid anaerobic reactor
07/15/1993DE4303529A1 Chemical-physical and biological physical cleaning of soil - comprises mixing with water, coarse material is separated, and sludge is sedimented and biologically treated using fluidised bed procedure
07/15/1993DE4204955C1 Purificn. of waste water contg. ammonium and organic contaminants - by initial treatment with active sludge under limiting oxidn. conditions to give a sludge loaded to organic substances for use in subsequent anoxic denitrification stage, etc.
07/14/1993EP0550510A1 Venting nozzle for liquids containing organic substances.
07/14/1993CN2138120Y Liquid-air multiple nozzles jet aerator
07/14/1993CN2138119Y Assembled filler for tied up fibre bunch
07/14/1993CN1074199A Circulating sludge method for integrating water supply with drainage channels
07/14/1993CN1021571C Water processing method for removing low-concentration organic matters
07/13/1993US5227136 Bioslurry reactor for treatment of slurries containing minerals, soils and sludges
07/13/1993US5227069 Bioremediation method
07/13/1993US5227068 Closed apparatus system for improving irrigation and method for its use
07/13/1993US5227067 Irrigation systems for parks and golf courses, treatment of car wash water supply systems, oxygen generating microorganisms, enzymes
07/13/1993US5227056 Apparatus for improving the quality of a large amount of water and the quantity of dissolved oxygen therein
07/13/1993US5227055 Aquaculture water treatment system including combined rotating biological contactor and evaporative cooler
07/13/1993US5227054 Filling body biological units and cooling towers
07/13/1993US5227051 System for processing organic waste liquid
07/13/1993CA1320287C Gas transfer device and flotation compartment used in a water purification process
07/08/1993WO1993013023A1 Process for the purification of polluted water
07/08/1993WO1993013022A1 Method of introducing hydrogen into aqueous liquids without forming bubbles
07/08/1993CA2126439A1 Method of introducing hydrogen into aqueous liquids without forming bubbles
07/07/1993EP0550367A1 Activated sludge process for purifying industrial and/or municipal effluents
07/07/1993EP0550023A2 Non-polluting compositions to degrade hydrocarbons and microorganisms for use thereof
07/06/1993US5225340 Process for reducing metal concentration in aqueous systems
07/06/1993US5225083 Biodegradation of greases in traps of drains by digestion with microorganisms
07/01/1993DE4143107A1 Chemical treatment of liq(s). esp. contaminated waters - comprises intimately mixing with liq. or gaseous reagent, pressure is then increased, liq. is mixed with body of untreated liq.
06/1993
06/30/1993EP0549518A1 Apparatus for introducing gas into a liquid
06/30/1993EP0549443A1 Process for the biological purification of impurity-loaded liquids
06/30/1993EP0548757A1 Multi-cell transportable bioslurry reactor
06/29/1993US5223140 Anaerobic, then aerobic processes
06/29/1993US5223129 Multi-layer aerating filter
06/25/1993CA2085432A1 Non-polluting compositions to degrade hydrocarbons and microorganisms for use thereof
06/24/1993WO1993012242A1 Method to produce single cell oil containing gamma-linolenic acid
06/24/1993WO1993012044A1 Biological process for removing bod and nitrogen from wastewater
06/24/1993WO1993012043A1 Low pressure process for entraining gas into liquid solution
06/24/1993WO1993012042A1 Protective agent and process against tce contamination, bacteria useful therefor and use of said bacteria
06/24/1993DE4142502A1 Blasenfreier wasserstoffeintrag in waessrige fluessigkeiten Bubble-free hydrogen entry in aqueous fluids
06/24/1993DE4142085A1 Sludge disposal - involves using water removal and fertiliser collection to develop a biomass for disposal
06/24/1993DE4142063A1 Mittel gegen tce-kontaminationen, bakterien und verfahren dafuer sowie verwendung der bakterien Remedy for tce-contaminations, bacteria and method therefor and use of bacteria
06/23/1993EP0547318A1 Process for oxidizing aromatic and aliphatic compounds
06/23/1993EP0547254A1 Apparatus for generating an air/oxygen stream in biological purification plants
06/23/1993EP0467896B1 Process for the biological treatment of waste water using microorganisms
06/23/1993CN2136836Y Biological treatment device for sewage
06/22/1993US5221470 Apparatus for treating waste water
06/18/1993CA2080030A1 Multi-cell transportable bioslurry reactor
06/17/1993DE4205787C1 Water purification - uses micro biological degradation to decompose hydrocarbon(s) and surfactants present
06/17/1993DE4140877A1 Transportable continuous sewage treatment
06/16/1993EP0546881A1 Process and apparatus for the application of selected strains, applied to the treatment of fats and starches
06/16/1993EP0546033A1 Aeration of liquids