| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 11/24/1999 | EP0873182B1 Hydrolysis reactor for removal of urea, ammonia and carbon dioxide from a liquid phase comprising urea in aqueous solution |
| 11/24/1999 | EP0846026B1 Flow-through photo-chemical reactor |
| 11/24/1999 | CN2350387Y Water treating device for electric water-boiling vacuum bottle |
| 11/24/1999 | CN2350381Y Capillary absorption type aerator |
| 11/24/1999 | CN2350380Y Quick contact flocculation alumen ustum flocculator |
| 11/24/1999 | CN2350379Y Antiscaling and descaling energy saver |
| 11/24/1999 | CN2350378Y Multifunctional purifying drinking water device |
| 11/24/1999 | CN2350377Y HF electric field descaling and antiscale water treating device for thermo-power generating plant |
| 11/24/1999 | CN2350376Y Electrocoagulation-electric air-float waste water treating device |
| 11/24/1999 | CN2350375Y Separating cup for trace element electrolysis |
| 11/24/1999 | CN1236330A Method and apparatus for high efficiency reverse osmosis operation |
| 11/24/1999 | CN1236023A Method for producing nickel and iron compound by using waste corrosive liquid containing nickel and iron chloride series |
| 11/24/1999 | CN1235868A Arsenic adsorbent and fluorine adsorbent using soil as raw material and its producing method |
| 11/24/1999 | CN1235834A Pearl water for heatlh care |
| 11/24/1999 | CN1046685C Method for control of biofouling |
| 11/23/1999 | USRE36402 Electrolysis of aqueous bromide salt solution pumped through canister housing anode and cathode while supplying direct current at first polarity, then temporarily disconnecting power to prevent deposit buildup prior to reversing polarity |
| 11/23/1999 | US5990216 Method for manufacturing grafted polyacrylamide flocculant of cationic/ampholytic ions |
| 11/23/1999 | US5989714 Synthetic mineral microparticles |
| 11/23/1999 | US5989508 Liquid medium extraction purification method |
| 11/23/1999 | US5989440 Deoxygenation of boiler water with an amino substituted nitrogen heterocycle compound or water soluble organic salt thereof to inhibit by-product formation and boiler corrosion |
| 11/23/1999 | US5989439 Contacting gaseous mixture of ozone and oxygen from air with a supply of water by means of venturi injection to dissolve the gas into water for eliminating odors and water pollution, feeding to swine |
| 11/23/1999 | US5989430 Adsorption of antimony cations from electrolyte solution onto anionic polymer ion exchange resin, desorption with acidic solution, neutralization of effluent to precipitate antimony hydroxide for recovery |
| 11/23/1999 | US5989424 Water filtration cartridge |
| 11/23/1999 | US5989407 Generation and delivery device for ozone gas and ozone dissolved in water |
| 11/23/1999 | US5989396 Bipolar electrode comprising metal substrate anodically surface coated in part with tin-antimony-platinum-valve metal oxide, and cathodically coated in part with valve metal-platinum oxide; electrolytic production of hypochlorite |
| 11/23/1999 | US5988943 Liquid distribution device for drainfields |
| 11/23/1999 | CA2168629C Modular home dialysis system |
| 11/18/1999 | WO1999059161A1 Antimony silicate sorbent for removal of metal ions |
| 11/18/1999 | WO1999058634A1 Metal ligand containing bleaching compositions |
| 11/18/1999 | WO1999058459A1 Method for treating humid waste containing an oxidable organic material |
| 11/18/1999 | WO1999058457A1 Method for treating waters, soils, sediments and/or sludges |
| 11/18/1999 | WO1999058456A1 Coagulator |
| 11/18/1999 | WO1999058454A1 Method for preventing replication in cryptosporidium parvum using ultraviolet light |
| 11/18/1999 | WO1999058453A1 Ultraviolet treatment for aqueous liquids |
| 11/18/1999 | WO1999058452A2 Electrodes for electrolytic removal of nitrates from water, methods of making same, and apparatus incorporating said electrodes |
| 11/18/1999 | WO1999058239A1 Contaminant adsorption and oxidation via the fenton reaction |
| 11/18/1999 | WO1999058219A1 Device for separating two non-mixable liquids with different specific gravities |
| 11/18/1999 | WO1999058218A1 Method and apparatus for removing oil from water |
| 11/18/1999 | WO1999058164A1 Additives for electrochemically activated solutions to minimize corrosion |
| 11/18/1999 | WO1999049472A3 Method for managing water-chemistry |
| 11/18/1999 | WO1999040030A3 Plant for processing water using silver ions |
| 11/18/1999 | DE19914200A1 Porous membrane e.g., for use as a filter with high virus retention for production of drinking water |
| 11/18/1999 | DE19913609A1 Production of lime chitin useful in composite or food-preserving jelly or as chelant or dyeing reserve |
| 11/18/1999 | DE19823350A1 Continuous purification of liquids containing biodegradable contaminants such as halogenated hydrocarbons, polycyclic aromatics or plant protectants |
| 11/18/1999 | DE19821609A1 Precipitation of phosphate and heavy metals from water or sediment using alkaline earth metal peroxide, giving high level of phosphate removal |
| 11/18/1999 | DE19821465A1 Algicide and fungicide for water treatment comprising cationic polymer such as polyhexamethylene biguanide, is harmless to fish and amphibians |
| 11/18/1999 | DE19820645A1 Escape of volatile substances from waste water treatment prevented |
| 11/18/1999 | CA2332043A1 Ultraviolet treatment for aqueous liquids |
| 11/18/1999 | CA2331513A1 Device for separating two non-mixable liquids with different specific gravities |
| 11/18/1999 | CA2330320A1 Contaminant adsorption and oxidation via the fenton reaction |
| 11/17/1999 | EP0957067A1 Aeration tank of organic waste liquor and aeration apparatus using the tank |
| 11/17/1999 | EP0957066A1 Process for precipitating or flocculating substances from solutions |
| 11/17/1999 | EP0956751A1 Method for cleaning surfaces contaminated by crude oil or petroleum product spills, sorbant for cleaning surfaces and method for producing the same |
| 11/17/1999 | EP0956270A1 Method of disinfecting water |
| 11/17/1999 | EP0956269A1 Oil/grease separator |
| 11/17/1999 | EP0956268A1 Method and apparatus for separating volatile components from a liquid |
| 11/17/1999 | EP0956267A1 Modular multi-stage water filter apparatus |
| 11/17/1999 | EP0956261A1 A vehicle and method for storing ozone |
| 11/17/1999 | EP0956145A1 Method to treat whey |
| 11/17/1999 | EP0956125A1 Extraction method and apparatus |
| 11/17/1999 | EP0956035A1 Oral cyclosporin formulations |
| 11/17/1999 | EP0909260A4 Method for sanitizing swimming pools and recirculating water systems |
| 11/17/1999 | EP0888178A4 Sorbents for removing toxicants from blood or plasma, and method of producing same |
| 11/17/1999 | CN2349203Y Water purifier |
| 11/17/1999 | CN2349202Y Fully automatic ozone purified water generator |
| 11/17/1999 | CN2349201Y Reverse raising multi-function water treating purifier |
| 11/17/1999 | CN2349200Y Coagulant adding quantity transmitter |
| 11/17/1999 | CN2349199Y Apparatus for treating sewage from hospital and service facilities |
| 11/17/1999 | CN2349198Y Electronic water treating apparatus |
| 11/17/1999 | CN2349197Y Stereo pulse distribution type microelectric water purifier |
| 11/17/1999 | CN2349196Y Small all-closed reverse osmosis double-temp water purifier |
| 11/17/1999 | CN2349195Y Position-change type float oil recovering machine with support frame |
| 11/17/1999 | CN2348910Y Pretreating filter for small water purifier |
| 11/17/1999 | CN1235708A Control circuit and method for piezoelectric transformer |
| 11/17/1999 | CN1235613A Polyacrylamide polymerization |
| 11/17/1999 | CN1235125A Apparatus for electrolyzing water with chlorine and mercury (heavy metals) remover |
| 11/17/1999 | CN1235061A Charge mosaic membrane, its production process, method of its use, and apparatus provided with the same |
| 11/17/1999 | CN1046490C Magnetic filtering sewage purifying method and apparatus |
| 11/17/1999 | CN1046424C Improved method and circuit for controlling electrical heater in water distiller |
| 11/16/1999 | US5986160 Ozonization of organic compounds |
| 11/16/1999 | US5986030 Cationic polymers from acrylic derivative monomers and copolymers |
| 11/16/1999 | US5985992 Anionic polymer products and processes |
| 11/16/1999 | US5985234 Polyaluminum chlorides and polyaluminum chlorosulfates methods and compositions |
| 11/16/1999 | US5985155 Automatically modifying on/off cycle time of sanitizer producer supplying antiseptic to water, i.e., swimming pools, in response to monitored parameters of water |
| 11/16/1999 | US5985154 Adding water soluble cationic polymer, nonionic and anionic surfactants, and silicate compound to paint spray booth to detackify and disperse solventborne paints and to reduce floatation of detackified paints |
| 11/16/1999 | US5985152 Method of preventing corrosion in a water system |
| 11/16/1999 | US5985150 Process for the aerobic biological purification of water |
| 11/16/1999 | US5985110 Apparatus for electrochemical treatment of water and/or water solutions |
| 11/16/1999 | US5985109 Electrolytic cell |
| 11/16/1999 | US5985108 Controlling apparatus for continuous electrolytic ion water producing apparatus |
| 11/16/1999 | US5985101 Method and apparatus for the removal of harmful substances from various objects or materials |
| 11/16/1999 | US5984993 Method and composition for odor control |
| 11/16/1999 | US5984108 Fluid filtering system with variable filter layer |
| 11/16/1999 | US5983909 Cleaning method and apparatus for the same |
| 11/16/1999 | US5983842 Vertical evaporator |
| 11/16/1999 | CA2139934C Method and apparatus for controlling microorganisms |
| 11/16/1999 | CA2076375C Process and apparatus for pathogen reduction in waste |
| 11/16/1999 | CA2073686C N,n'-dihaloimidazolidin-4-ones |
| 11/13/1999 | CA2255563A1 Ultraviolet treatment for aqueous liquids |
| 11/11/1999 | WO1999057069A1 Method for treating fluid liquid containing a volatile fraction |