Patents
Sitemap › C02 - Treatment of water, waste water, sewage, or sludge › C02F - Treatment of water, waste water, sewage, or sludge › C02F 9 - Multistep treatment of water, waste water or sewage
Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429)
12/1998
12/16/1998CN1201925A Dispensing apparatus capable of avoiding variation in dispensed amount and improving sanitary condition
12/16/1998CN1201760A Method for treating dye waste water and pigment waste water by electrolysis and by using thermal energy
12/10/1998WO1998055404A1 Method of disinfecting water and food stuff preservation with iodine species
12/10/1998WO1998055403A1 Water charging machine
12/10/1998WO1998055402A1 Method and device for sewage treatment
12/10/1998WO1998055239A1 Electro-chemical method and device for decontaminating soils and silts contaminated by heavy metals
12/10/1998WO1998055200A1 Method and apparatus for recovery of water and slurry abrasives used for chemical and mechanical planarization
12/10/1998DE19724786A1 Elektrochemisches Verfahren und Vorrichtung zur Dekontamination schwermetallverunreinigter Böden und Schluffe Electrochemical Method and apparatus for decontamination of heavy metal contaminated soils and silts
12/10/1998CA2292755A1 Method and apparatus for recovery of water and slurry abrasives used for chemical and mechanical planarization
12/09/1998EP0881928A1 Refrigerator water filter
12/09/1998CN2299861Y Sewage, excrement and urine merging purification plant
12/09/1998CN2299860Y Sewage physical purifier for making leather
12/09/1998CN1201017A Water-purifying device
12/09/1998CN1200891A Health-care drink of five kinds of dry-fruit kernels
12/09/1998CN1041079C Optimization control of coagulant charging quantity for water purification technology
12/08/1998US5845504 Portable/potable water recovery and dispensing apparatus
12/03/1998WO1998054290A2 Process and plant for treatment of distillery lees
12/03/1998WO1998054096A1 System for recovering and treating waste water
12/02/1998EP0880476A1 Process and plant for sewage treatment
12/02/1998EP0880475A1 Process for the treatment of water containing heavy metal ions
12/01/1998US5843309 Water purification system
12/01/1998US5843304 Filtration and treatment system
11/1998
11/26/1998WO1998052877A1 Method of water treatment using zeolite crystalloid coagulants
11/26/1998WO1998052874A2 Water treatment system having dosing control
11/26/1998DE19757614A1 Rapid, efficient separation of dye and pigment from waste water
11/25/1998EP0879792A2 Method for reducing algae and nutrient medium of a body of water and device for carrying out this method
11/25/1998EP0879323A1 Sanitary water apparatus with filtering apparatus for fibers, in particular asbestos fibers
11/25/1998CN2298246Y Automatic purifier
11/24/1998US5840194 Process for treating arsenic-containing waste water
11/19/1998WO1998051394A1 Water distiller system for medical applications
11/18/1998EP0877721A1 Method for treating aqueous liquid effluents containing organic and inorganic materials to enable recycling thereof
11/17/1998US5837147 Methods and apparatus for controlling the draining of water from a water purifier
11/17/1998US5837145 Method for treating water contaminated with cyanide
11/12/1998DE4244839C2 Digging sludge and water processing
11/11/1998EP0876999A2 Water treatment facility for recycling and decalcification of water in a car wash without drainage
11/11/1998EP0876299A1 Liquid sterilisation apparatus
11/11/1998EP0715603B1 Treatment method for waste water sludge comprising at least one metal
11/11/1998CN1198409A No pollution discharge regeneration method for softening device
11/10/1998US5833859 Method for treating fluids
11/10/1998US5833857 Mobile Bioreactor and Biogenerator
11/10/1998US5833846 Pretreatment; decarbonation; reverse osmosis; non-regeneration type ion exchanger; ultraviolet radiation oxidizer; cartridge polisher; membrane separation unit
11/10/1998US5833841 Feeding swimming pool water into ion exchanger to render it acidic and hardness-free; adding lime water to provide a lime-carbonic acid equilibrium
11/05/1998WO1998049107A1 Device for dewatering a slurry
11/05/1998WO1998049105A1 Wastewater treatment process for vacuum degasser effluent
11/05/1998DE19718498A1 Disposal of sewage and fluids from chemical toilets
11/04/1998EP0874782A1 Thermal plasma reactor and wastewater treatment method
11/04/1998EP0792196B1 Method of decontaminating contaminated material and devices therefor
11/04/1998CN1197778A Re-mixed fertilizer producing method by using tanning waste liquid and sludge as material
11/03/1998CA2081835C Removal of mercury from waste streams
10/1998
10/29/1998WO1998047823A1 Removal of hydrocarbons, mercury and arsenic from oil-field produced water
10/29/1998WO1998047822A1 Apparatus and method for oxidizing undigested wastewater sludges
10/29/1998DE19717579A1 Preparing disinfected water in storage tank avoiding contamination during storage
10/28/1998EP0641293B1 Dewatering of aqueous suspensions
10/28/1998CN1197041A 鱼粉污水处理方法 Fish waste water processing method
10/28/1998CN1197040A Synthetic treating process of electroplating waste water
10/27/1998US5827432 Electrically ionizing sludge, adding coagulant, flocculating, removing water
10/22/1998DE19757138C1 Beer wort condensate processing apparatus
10/22/1998DE19716277A1 Liquid or gas filtering and cleaning unit
10/21/1998EP0871591A1 Filtration tank and means for subsequent purification of waste water
10/21/1998CN1196336A Method for disposing printing and dyeing waste water and filter installation used
10/21/1998CN1196335A Oxygen-enriched water
10/20/1998US5824215 Water purifier
10/15/1998DE19714512A1 Floating deep water power station extracts energy from wind, wave, water and solar sources
10/14/1998EP0870734A2 Process and apparatus for the treatment of wash water contaminatedwith salt andother materials
10/14/1998CN2294256Y Biological cell type water purification equipment
10/14/1998CN2294255Y Domestic water purification tank
10/13/1998US5820764 Forming salts with neutralizing wash; seperating aqueous phase from organic phase; recycling portions of aqueous phase back to wash to concentrate by-products; periodically draining and replenishing portions of wash; destroying drained fraction
10/13/1998US5820761 Process for the treatment of organic pollutants in wastewaters by wet oxidation
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
10/08/1998CA2286361A1 Method of processing waste water, in particular from malt factories and breweries
10/08/1998CA2284740A1 A system for purification of domestic household effluent
10/07/1998EP0660949B1 Treatment of photographic effluent
10/07/1998CN2293563Y Water circulation treatment and underwater sewage collecting recombiner for swimming pool
10/06/1998US5817231 Water purifying and vending apparatus
10/01/1998DE19712737A1 Water treatment process and assembly
09/1998
09/30/1998EP0867409A1 Process for the recovery of metals from electrolytic surface treatment sludge
09/30/1998EP0817678A4 Removal of lead from drinking water
09/30/1998EP0767825B1 Alkaline diamine track lubricants
09/30/1998EP0759889B1 Process for valorizing a liquid acid effluent containing heavy metals
09/30/1998EP0753196B1 Method and device for disposing of a solution containing an organic acid
09/30/1998CN2292804Y Health wine treatment machine
09/30/1998CN2292798Y Water circulation treatment and underwater dirt collecting device for swimming pool
09/30/1998CN1194246A Waste water treating device
09/30/1998CN1194245A Composite circular water treating system
09/30/1998CN1194244A Method of treating city waste water
09/30/1998CN1194243A Method and device of treating large water body pollution
09/30/1998CN1194242A Space high-oxygen water
09/30/1998CN1194241A Waste water treating device
09/29/1998US5814197 Electrodialysis including filled cell electrodialysis (electrodeionization)
09/24/1998WO1998041478A1 Treatment of effluent streams containing organic acids
09/24/1998WO1998041477A1 Process for the electrochemically controlled absorption of soluble organic substances and of heavy metal ions extracted from aqueous solutions, and corresponding apparatus
09/23/1998CN1193610A Iodine added drinking water and production thereof
09/22/1998US5811014 Neutralizing the charges of the molecules in the contaminants causing separation of the molecules
09/22/1998US5810999 Water strainer/purifier and method of using same
09/16/1998CN1192938A Apparatus and method for fluid treatment units connected in parallel
09/15/1998US5807496 Compositions comprising polyamine and melaminealdehyde
09/15/1998US5807486 Process for the treatment of hazardous waste water
09/15/1998US5807485 Water pollution control
09/15/1998CA2112989C Compositions for treating waste water which contains heavy metals
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