Patents
Sitemap › C02 - Treatment of water, waste water, sewage, or sludge › C02F - Treatment of water, waste water, sewage, or sludge › C02F 3 - Biological treatment of water, waste water, or sewage
Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453)
10/1998
10/28/1998EP0873397A1 Novel microorganism and method for environmental purification using the same
10/28/1998CN2295748Y Floating carrier for living creatures
10/28/1998CN2295747Y Elastic filling fibers
10/27/1998US5827701 Method for the generation and use of ferric ions
10/27/1998CA2102134C Process and apparatus for purification of wastewater
10/25/1998CA2203707A1 Use of slow sand filter with recycle
10/22/1998WO1998046311A1 Bioremediation of organic and metallic contaminants
10/21/1998EP0872451A2 Process for purifying ammonium-containing waste waters
10/21/1998EP0871597A1 Method of treating a biomass in order to remove heavy metals with hydrogen sulphide
10/21/1998EP0871596A1 Use of mannanases as slime control agents
10/21/1998EP0871595A1 Waste water treatment, media therefor and its manufacture
10/21/1998EP0625960B1 Sewage treatment apparatus
10/21/1998CN2294952Y Integrated elastic stereo filler
10/21/1998CN1040298C Purification method for drinking water or waste water and/or exhaust gas
10/20/1998US5824222 Method for removing suspended inert solids from a waste stream
10/20/1998US5824221 Water purification process
10/15/1998WO1998045402A1 Sulfide evolution inhibitors
10/15/1998WO1998045213A1 Process for purification of waste waters and contaminant spills based on the use of cultivated emergent macrophytes converted into floating cultures
10/15/1998WO1998045030A1 Aeration diffuser
10/15/1998DE19816076A1 Water treatment plant comprises pre-treatment and activated sludge treatment basins
10/14/1998EP0870732A2 Method and device for treating wastewater.
10/14/1998EP0870427A2 Planting bed for a sewage plant
10/14/1998EP0869920A1 Method and plant for the purification of waste water by the activated sludge method
10/14/1998CN2294256Y Biological cell type water purification equipment
10/14/1998CN2294253Y Foamed carrier for biological carbon fluidized bed
10/14/1998CN1195649A Method for treating organic waste-water or excretions
10/13/1998US5821113 Method of reducing contamination and composition for use in the method
10/13/1998US5821112 Biological odor metabolizing compositions and methods of use
10/13/1998US5820761 Process for the treatment of organic pollutants in wastewaters by wet oxidation
10/13/1998US5820760 Process for reducing nitrous oxide emission from waste water treatment
10/13/1998US5820759 Comprising fish culturing subsystem, vascular aquatic plant subsystem for treating water degraded by fish excretion, cultured algae subsystem for further removing excess nutrients and replenishing dissolved oxygen
10/13/1998US5820758 Composition and method for clarifying and deodorizing a standing body of water
10/08/1998WO1998043919A1 Method for treating waste water, especially from and malt houses and breweries
10/08/1998WO1998043918A1 A system for purification of domestic household effluent
10/08/1998DE19717854C1 Process purifying domestic or industrial waste waters
10/08/1998CA2286361A1 Method of processing waste water, in particular from malt factories and breweries
10/08/1998CA2284740A1 A system for purification of domestic household effluent
10/08/1998CA2234180A1 A method for cleaning flush toilet by microorganisms and cleaning agent including microorganisms
10/07/1998CN2293561Y Glass fiber reinforced plastics buried sewage treatment apparatus
10/07/1998CN1195373A Microorganisms that decompose halogenated hydrocarbons and their use
10/07/1998CN1040070C Gas dissolving and releasing liquid treatment system
10/06/1998CA2196230C Device for aerating sewage water
10/01/1998DE19740383C1 Bacterial strains for decontamination of materials
10/01/1998DE19737690A1 Small-scale water treatment plant combines reed bed and gravel filter
10/01/1998DE19726128C1 Converting clarifier sludge etc. into arable soil
09/1998
09/30/1998EP0866774A2 Single-tank sewage treatment plant
09/30/1998EP0827418A4 Self-cleansing filter
09/30/1998EP0725669B1 Method and apparatus for recovering water from a sewer main
09/30/1998EP0721499B1 Method for the rehabilitation of soil contaminated by hydrocarbons and other biodegradable substances
09/30/1998EP0625961B1 Effluent treatment process
09/30/1998CN2292797Y Tightened plastic-coated metal wire supporter
09/30/1998CN2292796Y Elastic ripple three-dimensional packing
09/30/1998CN1194246A Waste water treating device
09/30/1998CN1194241A Waste water treating device
09/30/1998CA2227484A1 Environmental control for biological nutrient removal in water/wastewater treatment
09/29/1998US5814514 Water treatment by bioremediation with bacteria
09/29/1998US5814229 Aeration water by a diffuser producing bubbles, circulation of water and slurrying
09/29/1998US5814222 Oxygen enriched liquids, method and apparatus for making, and applications thereof
09/29/1998CA2072285C Gas injection apparatus and method
09/24/1998WO1998041479A1 A method for treating sludge from wastewater treatment
09/24/1998WO1998041478A1 Treatment of effluent streams containing organic acids
09/23/1998EP0866033A2 Process for the biological treatment of waste water
09/23/1998CN1193951A Soil and water remediation and enhancement process and apparatus therefor
09/23/1998CN1193950A Method for removing nitrogen compounds and for remineralizing weakly mineralized water
09/23/1998CN1193949A Process for purifying waste water
09/23/1998CN1193608A Wastewater treating apparatus
09/23/1998CN1193607A Wastewater treating apparatus
09/22/1998US5811290 Applying a composition comprising an adduct of urea with a non-ionic surfactant and a phosphorus source
09/22/1998US5811289 Acclimatizing mixture of bacteria and yeasts, inoculating effluent, aerating, inducing cyclical variations of dissolved oxygen content and ph, obtaining biomass, separating from residual water
09/22/1998US5811164 Aeration pipe and method of making same
09/22/1998US5811011 Biological treatment of wastewater
09/22/1998US5811010 Incubating with a mixed bacterial culture and mineral solutions, wastewater treatment
09/22/1998US5811009 Removing ammonia by oxidation, denitrification by culture microorganisms
09/22/1998US5811008 Multistage anaerobic treatment
09/22/1998US5811007 Vascular plant aquaculture and bioremediation system and method
09/22/1998US5809693 Microbial isolates promote phytoremediation
09/22/1998CA2009752C Effluent treatment system
09/18/1998CA2232464A1 A process for the biological treatment of wastewater with periods of biomass starvation
09/17/1998WO1998040317A1 Biological treatment of wastewater
09/17/1998WO1998040316A1 Device for distributing and/or collecting water passing through an immersed filter bed and biological filter provided with same
09/17/1998WO1998040315A1 An improvement in the treatment of wastes
09/17/1998WO1998040146A1 Ascending filtration device for waste water
09/17/1998WO1998039962A1 Hydroponic plant culture systems
09/17/1998CA2283307A1 Hydroponic plant culture systems
09/16/1998EP0864542A2 Process for the biological treatment of ground water or waste water for removing halogenated unsaturated hydrocarbons
09/16/1998EP0864541A1 Process for controlling phosphate concentration in biological water treatment plants
09/16/1998EP0864540A2 Carrier for bioreactor and bioreactor using the same
09/16/1998EP0863849A1 Method for removing nitrogen compounds and for remineralizing weakly mineralized water
09/16/1998CN2291415Y Strengthening mosaic corrugated biological rotary disk piece
09/16/1998CN1193310A Controlling of wastewater treatment by monitoring oxygen utilisation rates
09/16/1998CN1192999A Stereo-net-shape microbial carrier filler
09/15/1998US5807736 Method for biodegradation of aromatic and chlorinated compounds using microorganism strain FERM BP-5102
09/15/1998US5807724 Water pollution control
09/15/1998US5807485 Water pollution control
09/15/1998US5807484 Waste water treatment
09/15/1998CA2104433C Modular shipboard membrane bioreactor system for combined wastewater stream
09/12/1998CA2231796A1 Method of controlling the phosphorus concentration in biological wastewater purification plants
09/11/1998WO1998039259A1 Biodegradation of oil sludge
09/11/1998WO1998039256A1 Method for the biological treatment of effluent and plant for implementing same
09/11/1998WO1998039255A1 Process for controlling a filter device for the purification of contaminated and in particular nitrates containing liquid
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