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)
11/2000
11/28/2000CA2193557C A process for treating arsenic-containing waste water
11/23/2000WO2000069545A1 Method for flue gas desulfurization and flue gas desulfurization system
11/22/2000EP1053976A1 Waste water treatment method and apparatus
11/22/2000EP0946268A4 Method and apparatus for high efficiency reverse osmosis operation
11/22/2000CN2407001Y Infrared ionizing water apparatus with rareearth magnetizing device
11/22/2000CN1273947A Process for reclaiming and clarifying sewage after bathing
11/21/2000US6149826 First cylindrical filter of conductive activated carbon fiber, and a second filter inserted therein; voltage applying means for heating first filter to destroy bacteria; and a thermoconductive member to second filter to destroy bacteria
11/21/2000US6149809 Water treatment system with backwashable precise prefilter unit
11/21/2000US6149804 Includes air compressor for generating compressed air and uses two molecular sieve beds that operate one after the other
11/21/2000US6149801 Water treatment device with volumetric monitoring features
11/21/2000US6149788 Manipulating flow conditions within electrodeionization system to inhibit precipitation of scale-forming metallic cations and consequent scaling of concentrate-chamber side of associated anion exchange membranes
11/21/2000US6149780 Water electrolyzer having a water presence detector
11/21/2000US6149345 High-vacuum groundwater and soil remediation system and related method and apparatus
11/21/2000CA2272596A1 Waste water treatment method and apparatus
11/16/2000WO2000068153A1 Apparatus for oxidatively destructing trace injurious substance
11/16/2000WO2000068138A1 Water dispenser
11/16/2000CA2370510A1 Water dispenser
11/15/2000CN1273568A Water purifying and dispensing apparatus
11/15/2000CN1273229A Method for removing soluble metal of organic composite acid and alkaline effluent material
11/15/2000CN1058473C Electrochemical water-purifying device
11/14/2000US6146532 Membrane separation of undissolved substances; aerobic and anaerobic fermentation
11/14/2000US6146524 Multi-stage ozone injection water treatment system
11/09/2000WO2000066500A1 Electrocoagulation chamber and method
11/08/2000CN2404879Y Tow stage hospital waste water treatment equipment without power consumption
11/08/2000CN2404878Y Four low qualities and one little content type hospital wastewater treatment equipment
11/08/2000CN1272801A Flowmeter system useable with water treatment device
11/08/2000CN1272461A Method for recovering alkali from paper-making black liquor by using ammonium hydrogen carbonate as solvent
11/08/2000CN1058252C 鱼粉污水处理方法 Fishmeal sewage treatment
11/08/2000CN1058251C Method for treatment of sulfur-containing organic waste water and gas purifying special equipment-gas balancing apparatus
11/07/2000US6143163 For producing acidic and alkaline water, which is effective in preventing the dissolution of electrode material in the acidic water; applying voltage between the anode and the cathode when the electrolytic cell is in a power cutoff state
11/07/2000US6143058 Adsorbent construction and method
11/02/2000WO2000064822A1 Apparatus and process for separation and recovery of liquid and slurry abrasives used for polishing
11/02/2000WO2000064818A1 Method for disinfecting and purifying liquids and gasses
11/02/2000WO2000064560A1 Improved composite filter element
11/02/2000EP0741672B1 Method for purifying liquid manure
10/2000
10/31/2000US6139747 Process for cleaning up wastewaters from the preparation of alcohols
10/31/2000US6139745 Purification apparatus
10/31/2000US6139739 Composite filter element
10/31/2000US6139726 Treated water dispensing system
10/31/2000US6139714 Method and apparatus for adjusting the pH of a liquid
10/26/2000DE19918406A1 Continuous treatment of waste water from silicone manufacture comprises separating solids, extracting siloxanes and separating alcohol
10/26/2000DE19918172A1 Recovery and re-use of pigments from paper coating waste water by precipitation using a water-soluble condensate of dicyandiamide, formaldehyde, ammonium salts and optionally urea
10/26/2000DE19916381A1 Small-scale waste water treatment process has buffer stage to receive effluent water for efficient operation under extreme variations of volume flow
10/26/2000DE10011696A1 Recovering fibres from white water in pulp, paper or board making process, by filtration using a pulp fraction taken from the pulp mixing vessel
10/25/2000CN2402676Y Water circulation purifying equipment for car cleaning station
10/25/2000CN1270933A New technology for treating wast water of paper making
10/25/2000CN1057746C Method for treatment of waste sacrose liquid
10/19/2000WO2000061505A1 Method for purifying the water
10/19/2000WO2000037366A8 Method and installation for sanitizing surface water
10/18/2000EP1044169A1 Water reclamation system for a vehicle wash system
10/18/2000EP1044166A1 Method for removing hydrophobic impurities using cleavable nonionic surfactants
10/18/2000EP1044060A1 Bacteriostatic filter cartridge
10/18/2000CN2401545Y Multi-function water purifier
10/18/2000CN1270147A Method for treating dreg containing arsenic
10/18/2000CN1057513C Method and apparatus for treating sewage from oil refinery in two steps
10/18/2000CN1057512C Harnessing method for papermking waste water
10/18/2000CN1057508C Method for extracting chromium from chroming waste water and waste slag
10/17/2000USRE36915 Adding a specified ratio of sulfide ion to hexavalent chromium (cr6+) and ferrous ion to cr6+; adjusting ph to given range; adding polymers to the solution to assist in flocculation of the waste stream; produces less sludge
10/17/2000US6132611 Dynamic action filtration system
10/17/2000US6132600 Filtration and treatment system
10/17/2000CA2134905C Silicon polyelectrolytes for pitch deposit control
10/12/2000WO2000060290A1 Ice-maker treatment system
10/12/2000WO2000059835A1 Fluid treatment system
10/12/2000WO2000059833A1 Method for electrochemical treatment of effluents, especially effluents from leather tanneries, comprising chromium salts
10/12/2000WO2000059832A1 Distilling device
10/12/2000WO2000059615A1 Water dispensing apparatus with filter integrity testing system
10/12/2000CA2368208A1 Water dispensing apparatus with filter integrity testing system
10/12/2000CA2365356A1 Ice-maker treatment system
10/11/2000EP1042237A1 A method and a system for purifying water
10/11/2000EP1042233A1 METHOD AND APPARATUS FOR ADJUSTING THE pH OF A LIQUID
10/11/2000CN1269333A Ionic water magnetizing equipment utilizing rare earth magnetic materials
10/10/2000US6129845 Photo-oxidation device of a water treatment system photo-oxidizes organic material such as aromatic organic material, in the water to facilitate its removal from the water
10/05/2000WO2000058226A1 An apparatus for treatment of waste water
10/05/2000WO2000058223A1 Water treatment apparatus
10/05/2000WO2000058222A1 Water filter cartridge
10/05/2000DE19915086A1 Condensate drain for roof mounted HVAC units
10/04/2000EP1040083A1 Installation for biochemichal sewage treatment
10/04/2000CN2399385Y Regenerative paper wasted water treatment appts.
10/04/2000CN2399384Y Staged sewage treatment appts.
10/03/2000US6126842 Reducing the biochemical oxygen demand, chemical oxygen demand, ammonia and total nitrogen of wastewater by injecting a gas mixture of a low concentration of ozone gas in oxygen into a wastewater stream
10/03/2000US6126840 Treating aqueous effluent with high concentrations of silver and ferric/ferrous complexes using multiple additions of water-soluble sulfur containing polymer chelating agents, with optional additions of non-polymeric sulfur compounds
10/03/2000US6126838 Method of wastewater treatment by electrolysis and oxidization
10/03/2000US6126830 Method and apparatus for treating medical waste water
10/03/2000US6126827 A wastewater treatment including settling and separating solids from the liquid component, the separated solid portion is turned into a commercially composting material, biotreating liquid influent before discharging to the ground
10/03/2000US6126805 A multicompartment stack comprising cation exchange membranes and anion exchange membranes
10/03/2000CA2129947C Fixation and stabilization of chromium in contaminated materials
10/02/2000CA2303568A1 System and method for utilizing regenerated waste from water softeners used for steam flood operations
09/2000
09/29/2000CA2267511A1 Water filter cartridge
09/28/2000WO2000056987A1 Water treatment equipment
09/28/2000WO2000056666A1 Water purification process
09/28/2000WO2000056663A1 Liquid treating method and liquid treating system
09/28/2000CA2368022A1 Water purification process
09/27/2000EP1038836A2 Device for producing ion water
09/27/2000EP1037857A1 Ozonation apparatus for water treatment
09/27/2000EP1037856A1 Method and device for the production of pure water
09/27/2000CN2398587Y Magnetization antiscale health-care solar water heater
09/27/2000CN2398273Y Automatic multifunction ion water formation device of single-tube discharging
09/27/2000CN2398272Y Electronic magnetization ion water equipment
09/27/2000CN2398271Y Rare-earth magnetization ion water equipment for building
09/26/2000US6123838 Carbon purified water can then be safely and economically disposed of without harming the environment.
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