Patents
Sitemap › C02 - Treatment of water, waste water, sewage, or sludge › C02F - Treatment of water, waste water, sewage, or sludge › C02F 1 - Treatment of water, waste water, or sewage
Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124)
11/1998
11/05/1998CA2287996A1 Dewatering of sewage sludge
11/05/1998CA2236635A1 Apparatus and method for treating water in a water supply system
11/04/1998EP0875604A1 Substituted semicarbazides as oxygen scavengers
11/04/1998EP0875145A2 Method and composition for inhibiting growth of microorganisms including peracetic acid and a non-oxidizing biocide
11/04/1998EP0875033A1 Apparatus and method for analyzing power plant water chemistry
11/04/1998EP0874783A1 Methods and compositions for controlling biofouling using n-alkyl heterocyclic compounds
11/04/1998EP0874782A1 Thermal plasma reactor and wastewater treatment method
11/04/1998EP0874689A1 Electrodeionization apparatus having geometric arrangement of ion exchange material
11/04/1998EP0688167B1 Ionene polymers as microbicides
11/04/1998EP0607420B1 Method for the detoxification of mustard gas, and sulfur-containing quaternary ammonium ionene polymers
11/04/1998EP0594806B1 Composition and method for scavenging oxygen
11/04/1998CN2296342Y Powder material quantitative feeder
11/04/1998CN2296341Y Clean water inlet seat
11/04/1998CN1197869A Lime process treating papermaking effluent
11/04/1998CN1197769A High-molecular flocculant, method for producing flocculant and water-treatment method employing the flocculant
11/04/1998CN1197768A Common waste water treating method
11/04/1998CN1197767A Large-aperture electric-field water treater
11/03/1998US5832361 Treatment of fluids with electromagnetic radiation
11/03/1998US5830546 Reservoir system for prolonged diffusion of an active principle
11/03/1998US5830388 Coagulating and flocculating agent and method for making it
11/03/1998US5830383 Method for inhibition of oxygen corrosion in aqueous systems by the use of a tannin activated oxygen scavenger
11/03/1998US5830366 Method and apparatus for filtering water on vessel and macerating retained solids
11/03/1998US5830364 Process for the treatment of waste material suspensions
11/03/1998US5830363 Using an expanded material
11/03/1998US5830361 Boiling water reactor
11/03/1998US5830360 Water purification
11/03/1998US5830315 Treatment of Aqueous systems using a chemically modified tannin
11/03/1998US5829527 Compositions and applications thereof of water-soluble copolymers comprising an ampholytic imidazolium inner salt
11/03/1998US5829466 Fluid treatment system
11/03/1998CA2165072C Method and apparatus for controlling zebra mussels in water conduits
11/03/1998CA2132234C Filtration membrane module
11/03/1998CA2081835C Removal of mercury from waste streams
11/03/1998CA2010127C System for treating waste water by nitrification
10/1998
10/29/1998WO1998047849A2 Salt of boehmite alumina and processes for dyeing fibers, for treating a dye waste stream and for removing contaminants from a municipal waste treatment stream
10/29/1998WO1998047826A1 Method and device for contacting ozone in fluids to be treated, in particular water
10/29/1998WO1998047825A1 Process for reducing the sulfide content of a sulfide-containing fluid
10/29/1998WO1998047824A1 Apparatus for treating waste water
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
10/29/1998WO1998047821A1 Process for preventing accumulation of contaminants in suction system
10/29/1998WO1998047820A1 Method for in-situ immobilisation of heavy metals and/or sulphate in water-containing zones
10/29/1998WO1998047819A1 Product for bactericidal treatment of fluids
10/29/1998WO1998047818A1 Nitrate reduction
10/29/1998WO1998047595A1 A separator device for removing pollutants from waste water
10/29/1998WO1998047594A2 Use of aerogels as adsorption agents
10/29/1998WO1998019961A3 Devices and methods for producing and using ozone
10/29/1998DE19815915A1 Activation of fluid, gas or solid medium e.g. water, petrol, diesel or heating oil
10/29/1998DE19717768A1 Lamella assembly for separation of fluid containing light and heavy phases
10/29/1998DE19717579A1 Preparing disinfected water in storage tank avoiding contamination during storage
10/29/1998DE19717451A1 Industrial waste water treatment process and assembly
10/29/1998DE19717052A1 Chamber for treating e.g. organic, solid materials to electrical and magnetic fields with pressure variation
10/29/1998DE19716802A1 Waste water treatment assembly
10/29/1998CA2289280A1 Use of aerogels as adsorption agents
10/29/1998CA2286853A1 Nitrate reduction
10/28/1998EP0874008A2 Maleic copolymer, process for producing the same and uses thereof
10/28/1998EP0874004A1 Improved chelating resins
10/28/1998EP0873973A2 Drinking watertank, filling process and device for drinking water supply
10/28/1998EP0873773A2 Vertical evaporator
10/28/1998EP0873388A1 Process for the washing of laundry
10/28/1998EP0873278A1 Device for adding oxygen to water
10/28/1998EP0873277A1 Methods and compositions for controlling biofouling using amides
10/28/1998EP0873194A1 Vortex system for separating particles from a liquid stream
10/28/1998EP0873186A1 Sorbents comprising sphagnum
10/28/1998EP0873184A1 Method and device for treating an aqueous solution
10/28/1998EP0873182A1 Hydrolysis reactor for removal of urea, ammonia and carbon dioxide from a liquid phase comprising urea in aqueous solution
10/28/1998EP0873143A1 Improved deactivation of organisms using high-intensity pulsed polychromatic light
10/28/1998EP0873048A1 Methods and compositions for controlling biofouling using oxime esters
10/28/1998EP0838045A4 Making a photopolymer printing plate
10/28/1998EP0764140B1 Dewatering of suspensions
10/28/1998EP0641293B1 Dewatering of aqueous suspensions
10/28/1998CN2295749Y Counterflush electronic descaling device
10/28/1998CN2295746Y Water minerizing and purifying apparatus
10/28/1998CN2295745Y Portable HF electronic water treating apparatus
10/28/1998CN2295744Y Automatic attraction coupling household water magnetizing apparatus
10/28/1998CN2295743Y Vertical electrolyzing column for waste water treatment
10/28/1998CN2295742Y Ultravoilet disinfecting apparatus for drinking water
10/28/1998CN2295741Y Water superfiltering apparatus capable of cleaning automatically and immediately
10/28/1998CN2295519Y Water treating apparatus for clarification by self-excition reaction
10/28/1998CN2295435Y Magnitized soy bean milk maker
10/28/1998CN1197085A Improved chelating resins
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
10/28/1998CN1196884A Sterilizing composition for making ultrapure water in semiconductor devices fabrication process, method of sterilizing ultrapure water delivery system using this, and ultrapure water delivery system
10/27/1998US5828923 Apparatus comprising washout unit, surfactant supply, hot water supply, holding tank, mixing cone for mixing effluent with coagulant to uniformly coagulate polymer grains for separation
10/27/1998US5827959 Monitoring chemical flow rate in a water treatment system
10/27/1998US5827882 Method of using ethyl pyruvate for treating wrinkles
10/27/1998US5827434 Water treatment housings comprising a reservoir for mixing fluid with barrier chemical to dissolve and release the chemical; purification
10/27/1998US5827433 Adding quick-killing microbiocide to water systems used in crude oil production, then intermittent addition of controller biocides to suppress bacterial growth
10/27/1998US5827432 Electrically ionizing sludge, adding coagulant, flocculating, removing water
10/27/1998US5827427 Tank assembly
10/27/1998US5827373 Regenerating used washing solution for automobiles comprising detergent, cationic tensides, oil-metal sludge by separating sludge, oxygenating, filtering solution
10/27/1998US5826979 Waste material processing apparatus and method
10/23/1998CA2235120A1 Drink water supply apparatus
10/22/1998WO1998046933A2 Tubular lamp mounting arrangement
10/22/1998WO1998046564A1 Epsilon caprolactam compositions and byproducts
10/22/1998WO1998046534A1 Filter cartridge for gravity-fed water treatment devices
10/22/1998WO1998046533A1 Process for purifying water
10/22/1998WO1998046532A1 Housing and method that provide extended resident time for dissolving generated oxygen into water
10/22/1998WO1998046531A1 Improved water purification system
10/22/1998WO1998046530A1 Process for recovering oils
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