| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 05/19/1999 | EP0916620A2 Desalting aqueous streams via filled cell electrodialysis |
| 05/19/1999 | EP0694025B1 Blocks comprising solid dispersions of water-soluble polymeric particles in a wax matrix and their use as flocculants |
| 05/19/1999 | EP0654968B1 Anti-microbial composition |
| 05/19/1999 | CN2319401Y Magnetized ozone water appts. |
| 05/19/1999 | CN2319399Y Wall magnetic water tank |
| 05/19/1999 | CN2319398Y Gas dissolving cylinder automatic controlling device for dissolving |
| 05/19/1999 | CN2319397Y Two-in-one water filter rstructure for drinking water and washing |
| 05/19/1999 | CN2319396Y Ozone active carbon deep treatment appts. for drinking water |
| 05/19/1999 | CN1216970A Water treatment device with fill-counting cartridge |
| 05/19/1999 | CN1216784A Chlorine dioxide generation for water treatment |
| 05/19/1999 | CN1216751A Coagulation method for treating oil prodn. waste water of oil field polymers |
| 05/19/1999 | CA2221519A1 Waste water treatment process |
| 05/18/1999 | US5904857 Removal of dissolved oxygen from alkaline water |
| 05/18/1999 | US5904855 Closed chemically enhanced treatment system |
| 05/18/1999 | US5904854 Composite adsorbent element comprising granular activated carbon and activated carbon fibers |
| 05/18/1999 | US5904853 Wastewater treatment process and apparatus for high flow silica removal |
| 05/18/1999 | US5904851 Oxygenating apparatus, method for oxygenating liquid therewith, and applications thereof |
| 05/18/1999 | US5904832 And an oxidizable organic material which is desorbed from the adsorbent and substantially decomposed in a batch or cyclic process; passing aqueous stream to adsorbent, contacting with oxidant |
| 05/18/1999 | CA2140639C Iodine/resin disinfectant and a procedure for the preparation thereof |
| 05/18/1999 | CA2095243C Fluid purification |
| 05/18/1999 | CA2075790C Method for adsorbing and separating heavy metal elements by using a tannin adsorbent and method of regenerating the adsorbent |
| 05/14/1999 | WO1999023857A1 Non-thermionic ballast-free energy-efficient light-producing gas discharge system and method |
| 05/14/1999 | WO1999023494A1 Diaphragm pump dosage monitoring device |
| 05/14/1999 | WO1999023331A1 Automatic swimming pool cleaners and associated components and systems |
| 05/14/1999 | WO1999023257A1 Method of detecting mutant dna by mipc and pcr |
| 05/14/1999 | WO1999023037A1 Method for neutralization of waste water |
| 05/14/1999 | WO1999023036A1 Method for removing hydrophobic impurities using cleavable nonionic surfactants |
| 05/14/1999 | WO1999023035A1 Removal of pollutants from effluents with electrochemical treatment |
| 05/14/1999 | WO1999023034A1 Water treatment process |
| 05/14/1999 | WO1999022933A1 System for extracting soluble heavy metals from liquid solutions |
| 05/14/1999 | WO1999022868A1 Pressure-enhanced extraction and purification |
| 05/14/1999 | WO1999022862A1 Method of producing high surface area carbon structures |
| 05/14/1999 | WO1999022581A1 Installation for the purification of liquid manures and the like |
| 05/14/1999 | CA2307876A1 Pressure-enhanced extraction and purification |
| 05/14/1999 | CA2307604A1 Non-thermionic ballast-free energy-efficient light-producing gas discharge system and method |
| 05/14/1999 | CA2306847A1 Water treatment process |
| 05/12/1999 | EP0915060A1 Apparatus for supplying ozonated ultrapure water |
| 05/12/1999 | EP0915059A1 Process for the electrochemically controlled absorption of soluble organic substances and of heavy metal ions extracted from aqueous solutions, and corresponding apparatus |
| 05/12/1999 | EP0915058A2 Process for recovering ammonia from wastewater containing ammonium ions |
| 05/12/1999 | EP0915057A2 Process for the selective elimination of ammonia or ammonium ions from an aqueous solution |
| 05/12/1999 | EP0914865A1 Improved M41S catalyst and method of manufacture |
| 05/12/1999 | EP0914203A1 A method and a reactor for electrochemical conversion of a material e.g. soot particles being insoluble in a fluid |
| 05/12/1999 | EP0914199A1 Acid contacted enhanced adsorbent and/or catalyst and binder system |
| 05/12/1999 | EP0914195A1 Method for separating a catalyst by membrane electrodialysis |
| 05/12/1999 | EP0914185A1 Pour-through and pitcher mounted water filter |
| 05/12/1999 | EP0914184A1 Apparatus and method for manipulating particles in a liquid medium by ultrasonic waves |
| 05/12/1999 | EP0809435B1 Composition capable of releasing acraldehyde and its use |
| 05/12/1999 | EP0775092B1 Use of hydrogen sulphate as the acid constituent in conjunction with hydrogen peroxide for the cleaning of drinking-water supply equipment |
| 05/12/1999 | DE19847978A1 Waste water treatment assembly separating sludge and oil from industrial effluent |
| 05/12/1999 | DE19749875A1 Cleaning of tubes which supply consumable agents to dialysis machine |
| 05/12/1999 | CN2318217Y Photoelectric type multifunction automatic water resoures sterilizer |
| 05/12/1999 | CN2318216Y High-efficient sedimentation tank |
| 05/12/1999 | CN2318215Y Household electroosmosis pure water machine |
| 05/12/1999 | CN2318214Y Ultroviolet sterilizer |
| 05/12/1999 | CN2318213Y 纯水机 Water Purifier |
| 05/12/1999 | CN2317639Y 'Tumbler' oxygen generator |
| 05/12/1999 | CN1216517A Process for the preparation of water purification solutions containing ferric iron and the use of the product as of obtained |
| 05/12/1999 | CN1216516A Gasification device |
| 05/12/1999 | CN1216514A Method and apparatus for making aqueous chlorine dioxide |
| 05/12/1999 | CN1216445A Biocidal composition and method for treating raw materials, products and means of production |
| 05/12/1999 | CN1216290A Process for treatment of flue gas desulfurization waste water |
| 05/12/1999 | CN1043309C 过滤器 Filter |
| 05/11/1999 | US5902808 Methods and compositions for controlling biofouling using N-alkyl heterocyclic compounds |
| 05/11/1999 | US5902747 Transferring gaseous component between two fluids through membrane unit including liquid impermeable, oxygen permeable nonporous membrane formed of amorphous copolymer of perfluoro-2,2-dimethyl-1,3-dioxole |
| 05/11/1999 | US5902488 Slow sand filter |
| 05/11/1999 | US5902482 Back-flushable filter cartridge and method of back-flushing same |
| 05/11/1999 | US5902465 Apparatus for treating industrial waste water through electrolysis |
| 05/11/1999 | CA2136600C Process for the removal of organic solvents from wastewaters |
| 05/06/1999 | WO1999021822A1 Process for preparing a cationically modified (meth)acrylamide polymer and use of the polymer |
| 05/06/1999 | WO1999021804A1 Stabilized liquid lime dispersion for sewage treatment |
| 05/06/1999 | WO1999021801A1 Method for water purification based on the fenton reaction |
| 05/06/1999 | WO1999021800A1 Method and device for adjusting the permeate flow rate in membrane bioreactors for water treatment |
| 05/06/1999 | WO1999021799A1 Method for improving the biological properties of aqueous liquids and edible oils and for improving combustion |
| 05/06/1999 | WO1999021798A1 Method and system to increase the quantity of dissolved gas in a liquid and to maintain this increased quantity until utilized |
| 05/06/1999 | WO1999007231A9 Apparatus and method for magnetically treating milk products |
| 05/06/1999 | EP0913391A1 Desalination of aqueous sulfonamide solutions |
| 05/06/1999 | EP0913193A2 Catalyst, process and process unit for the abatement of noxious compounds in water |
| 05/06/1999 | EP0913091A1 Composition and method for inhibiting the growth of microorganisms including stabilized sodium hypobromite and isothiazolones |
| 05/06/1999 | EP0912639A1 Derivatized rhodamine dye and its copolymers |
| 05/06/1999 | EP0912448A1 Methods for sanitizing water |
| 05/06/1999 | EP0912447A1 Method and device for the activation of liquids |
| 05/06/1999 | EP0912446A1 Water treatment |
| 05/06/1999 | EP0912445A1 Method and device for treating a liquid medium |
| 05/06/1999 | EP0912233A1 Water treatment apparatus comprising membranes |
| 05/06/1999 | EP0912219A1 A separator device for removing pollutants from waste water |
| 05/06/1999 | EP0787107B1 Equipment for the purification of a liquid |
| 05/06/1999 | EP0752976B1 Oxidation process |
| 05/06/1999 | EP0576563B1 Batch liquid purifier |
| 05/06/1999 | DE19748513A1 Removal of hydrocarbon impurities from aqueous hydrocyanic acid by passing over activated charcoal |
| 05/06/1999 | DE19748396A1 Verfahren zur Entfernung hydrophober Verunreinigungen mittels spaltbarer nichtionischer Tenside Process for the removal of hydrophobic contaminants using the cleavable nonionic surfactants |
| 05/06/1999 | DE19748229A1 Electrochemical treatment of nitrophenols and nitroresorcinols present in waste water |
| 05/06/1999 | CA2306797A1 Process for preparing a cationically modified (meth)acrylamide polymer and use of the polymer |
| 05/06/1999 | CA2250558A1 Multi-stage water filter system |
| 05/05/1999 | CN2317229Y Settling tank for sewage purifying treatment process |
| 05/05/1999 | CN2317228Y Fresh water extractor |
| 05/05/1999 | CN2316809Y Dual-purpose sterilizing aerator for fishpond |
| 05/05/1999 | CN1215701A Method for treatment of high hardness flourine-contg. drinking water with food nutrient |
| 05/05/1999 | CN1215700A Magnesium oxide-based modifier for water quality and bottom sediment quality |
| 05/05/1999 | CN1215699A Electrolyzed water production apparatus |
| 05/04/1999 | US5901368 Radiolysis-assisted decontamination process |