| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
|---|
| 04/17/1979 | US4149943 Method of recovering mercury |
| 04/10/1979 | US4148727 Water treatment |
| 03/27/1979 | CA1051566A1 Raw liquid waste treatment system and process |
| 03/20/1979 | US4145279 Digestion, demineralization |
| 03/13/1979 | US4144149 Method for working up aqueous residues from metallizing baths |
| 02/27/1979 | US4141826 Adsorption, desorption, regeneration |
| 02/06/1979 | US4138339 Filter-purifier cartridge having separable elements |
| 01/30/1979 | US4137158 Process for tertiary treatment of waste waters from anaerobic digestion treatment process |
| 01/16/1979 | US4134786 Process for purification of waste water produced by a Kraft process pulp and paper mill |
| 01/16/1979 | CA1046665A1 Inexpensive purification of urea waste streams |
| 01/09/1979 | US4133752 Method for decomposition of phthalic acid esters by use of microorganisms |
| 01/02/1979 | US4132636 Removal of ammonia, treatment with microorganisms, sedimentation by addition of an iron salt |
| 01/02/1979 | CA1045729A1 Method of obtaining a precipitate of metallic ions from solutions containing low concentrations of metal salts |
| 12/26/1978 | US4131541 Removing coagulable substances from an aqueous medium |
| 12/05/1978 | US4128477 Method for the treatment of sea discharged sewage |
| 12/05/1978 | US4128424 Method for treating photographic processing fluids prior to sewering thereof |
| 11/28/1978 | US4127458 Recovering platinum group metal as a stable complex |
| 11/28/1978 | CA1043482A2 Chemical treatment of waste water to remove phosphorus contaminants |
| 11/28/1978 | CA1043480A2 Ozonation in waste water treatment |
| 11/21/1978 | US4126550 Flash reactor |
| 11/14/1978 | CA1042575A1 Process for regenerating an ion exchange bed |
| 11/14/1978 | CA1042572A1 Purification of water for boiler |
| 11/07/1978 | US4124502 Process for the purification of greasy and soiled water using a heavy solvent, and apparatus for its implementation |
| 11/07/1978 | US4124499 Sewage treatment system |
| 11/07/1978 | CA1041943A1 Method of and apparatus for waste water treatment |
| 10/24/1978 | US4121993 Electrolysis |
| 10/17/1978 | US4120787 Deaeration by heat exchanging |
| 10/10/1978 | US4119538 Treatment of waste liquid and apparatus therefor and a fertilizer composition obtained thereby |
| 10/10/1978 | US4119536 Method of disposing of a ferrous-ion containing acidic aqueous waste by forming polycrystalline iron compound particles |
| 10/10/1978 | US4119273 System for pollution suppression |
| 10/03/1978 | US4117560 Apparatus for treating fluids and treating tablets therefor |
| 09/26/1978 | US4116834 Apparatus for increasing the pH of waste water |
| 09/26/1978 | US4115876 Self-contained recirculating toilet system |
| 09/19/1978 | US4115408 Heating, separation |
| 09/19/1978 | US4115267 Filtration, ozone, bromine or hydrobromic acid |
| 09/19/1978 | CA1038562A1 Method of purifying effluents from forest industries |
| 09/12/1978 | US4113619 Waste fluid treatment system |
| 09/12/1978 | US4113613 Catalytically triggered decomposition releasing a gas |
| 09/12/1978 | US4113612 Spontanerous, catalytically triggered decomposition releasing a gas |
| 09/12/1978 | CA1038507A1 Waste treatment purification system |
| 09/05/1978 | US4111803 Process for recovering proteinaceous matter from acid whey and tannery unhairing effluents |
| 09/05/1978 | US4111800 Carbonization, alkali metal meta aluminate |
| 08/29/1978 | US4110219 Reverse osmosis water unit |
| 08/29/1978 | US4110212 With acidic ferrous salt |
| 08/29/1978 | CA1037386A1 Purification of waste water containing organic and inorganic impurities |
| 08/22/1978 | US4108770 Chromium reduction process |
| 08/22/1978 | US4108769 Process for reducing the mercury content of industrial waste waters |
| 08/22/1978 | US4108753 Electrolytic cells |
| 08/15/1978 | US4107047 Filter-purifier cartridge |
| 08/15/1978 | US4107021 Water pot with an electrolyzing device |
| 08/15/1978 | CA1036723A1 Method or reducing the emission of organic substances from cellulose plants |
| 08/08/1978 | US4105556 Reverse osmosis |
| 08/08/1978 | US4105545 Process for removing cyanide-containing components from aqueous media |
| 08/01/1978 | US4104166 Ozonization |
| 08/01/1978 | US4104164 Recirculating filter |
| 07/18/1978 | US4101777 Fluid purification device and ultraviolet lamp therefor |
| 07/11/1978 | US4100073 Waste-water treatment system |
| 07/11/1978 | US4100070 Apparatus for use in water purification particularly sewage treatments |
| 07/04/1978 | US4098697 Apparatus for removing mercury from waste water |
| 06/13/1978 | US4094786 Treatment control apparatus for water systems |
| 06/13/1978 | US4094779 Activated carbon filter |
| 06/13/1978 | US4094740 Preparation of liquid fuel and nutrients from solid municipal waste |
| 06/13/1978 | US4094669 Polytetrafluoroethylene membrane filters for mercury recovery |
| 06/06/1978 | US4093551 Device for purifying sewer water in small sewer systems |
| 06/06/1978 | US4093543 Increasing ph using decomposition catalyst of alumina, titania, titania-zirconia, zirconia, or silica |
| 06/06/1978 | US4093516 Concentration, hydrolysis and saccharification, fermentation, distillation |
| 05/02/1978 | US4087359 Process for removing mercury and mercury salts from liquid effluents |
| 05/02/1978 | US4087276 Removal of mercury from sludge by heating and condensing |
| 04/25/1978 | US4086166 Water filtering and dispensing apparatus |
| 04/25/1978 | US4086165 Liquid-treatment system |
| 04/25/1978 | US4086164 Method of disposing of waste water containing emulsified oil |
| 03/28/1978 | US4081816 Apparatus for processing photographic film and treating contaminated processing liquids |
| 03/28/1978 | US4081365 Methods for use in water purification particularly sewage treatments |
| 03/07/1978 | US4078129 Alkali metal borate coagulant |
| 03/07/1978 | US4077862 Device for regulating drinking water |
| 02/21/1978 | US4075095 Filtration, settling, backwashing |
| 02/14/1978 | US4073726 Amine compound |
| 02/14/1978 | US4073722 Process for the purification of waste water |
| 02/07/1978 | US4072798 Bioelectric neutralization of acid waters |
| 02/07/1978 | US4072678 Process for producing caprolactam |
| 02/07/1978 | US4072605 Method of obtaining a precipitate of metallic ions from solutions containing low concentrations of metal salts |
| 01/31/1978 | US4071445 Method and apparatus for treating waste water on ships |
| 01/31/1978 | US4071398 Chemical concentration by sequential activated carbon adsorption and fractionation |
| 01/24/1978 | US4070281 Method for treating waste water |
| 01/17/1978 | US4069153 Method of destroying pyrogens |
| 01/17/1978 | US4069143 Settling vessel |
| 01/17/1978 | US4069033 Extraction of fertilizer salts and organic substances of high nutritive value from industrial waste waters |
| 01/03/1978 | US4066835 Process for purifying the waste water produced in the process of producing ester plasticizers |
| 01/03/1978 | US4066551 Portable water filtration device |
| 01/03/1978 | US4066541 Process for treating waste water containing polyvinyl alcohol |
| 01/03/1978 | US4066538 Sewage treatment |
| 01/03/1978 | US4066514 Recovery of nitrated compounds from water by distillation |
| 12/20/1977 | US4064047 Method and apparatus for waste water treatment |
| 12/06/1977 | US4061568 Method for recovering and stabilizing fat and fatty substances as well as proteins and proteinous substances from process water |
| 12/06/1977 | US4061556 Portable electrolytic apparatus for purifying drinking water |
| 11/29/1977 | US4060410 Process for removing heavy metals from fluid media |
| 11/22/1977 | US4059522 Apparatus for purifying water |
| 11/22/1977 | US4059516 Process for treating wool scouring wastes |
| 11/22/1977 | US4059514 Method for purification of industrial waste water |
| 11/22/1977 | US4059492 Process for the purification of waste from acrylonitrile production |