| Patents for C02F 11 - Treatment of sludge; Devices therefor (21,423) |
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| 09/26/1999 | CA2266573A1 Comminution and distribution device for comminutable, pumpable materials |
| 09/23/1999 | DE19811763A1 Removing arsenic and optionally antimony from suspensions obtained in drinking water production |
| 09/23/1999 | DE19811648A1 Process and assembly to break down the cellular content of sewage sludge |
| 09/21/1999 | US5955350 Sequential biological/chemical/biological treatment of organic waste |
| 09/21/1999 | US5954970 Microwave heating paint sludge housed within open container having porous liner and placed upon perforated floor of oven through which separated liquid drains from sludge, then evaporating remaining liquid from retained sludge solids |
| 09/21/1999 | US5954964 Process for enhancing dewatering of treated biosolids in a wastewater treatment system |
| 09/16/1999 | WO1999046209A1 Method of carrying out a bioreaction |
| 09/16/1999 | WO1999046207A1 Aqueous dispersions |
| 09/15/1999 | EP0941970A1 Treatment of aqueous effluents by injection of carbon dioxide |
| 09/15/1999 | EP0879215A4 Process and apparatus for liquid sludge stabilization |
| 09/15/1999 | EP0799162B1 Reversible flow supercritical reactor and method for operating same |
| 09/14/1999 | US5951457 Determining the amount of ascorbic acid necessary to chemically reduce sufficient hexavalent chromium to a lower valence state, mixing the determined amount of ascorbic acid with the contaminated soils, sediments, and fills |
| 09/14/1999 | CA2087607C Bioreactor |
| 09/08/1999 | EP0940449A1 Aqueous composition comprising cationic and anionic polymers |
| 09/08/1999 | CN1044978C Combined filtration and fixation of heavy metals |
| 09/07/1999 | US5948373 Free radical oxidation installation for treating liquid effluents contaminated by organic substances |
| 09/07/1999 | US5948275 Method and facility for treating effluents loaded with organic material, particularly by wet oxidation and with internal solid residue recycling, and purification facility therefor |
| 09/07/1999 | US5948261 The invention provides for a truly aerobic environment under which thermophilic microorganisms will thrive. |
| 09/07/1999 | CA2170575C Apparatus for determining properties of slurry materials and sludge treating process |
| 09/01/1999 | EP0939057A2 Process and device for mechanical and thermal dehydration of sludges |
| 09/01/1999 | EP0938456A1 Microbial remediation reactor and process |
| 09/01/1999 | EP0755361B1 Method and apparatus for treating waste water streams |
| 09/01/1999 | CN2335963Y Stirring pump for anaerobic pool |
| 08/31/1999 | CA2098807C Waste treatment process employing oxidation |
| 08/26/1999 | WO1999042423A1 Method and plant for the treatment of liquid organic waste |
| 08/26/1999 | DE19807149A1 Dewatering of thickened sewage sludge at high temperature |
| 08/26/1999 | CA2262724A1 Process and plant for mechanical and thermal dewatering of sludges |
| 08/25/1999 | EP0869868A4 Vacuum drying diaphragm filter press plates |
| 08/25/1999 | EP0629178B1 Apparatus for treatment of effluent |
| 08/24/1999 | US5942117 Anaerobic biodegradation of unsaturated, saturated, aromatic and halogenated hydrocarbons |
| 08/19/1999 | DE19752609A1 De-watering process for paste or sludge by steam heating and mechanical pressing |
| 08/18/1999 | EP0936190A1 Method for biological and oxydation treatment of effluents producing no or little excess waste sludge |
| 08/18/1999 | EP0936186A1 Apparatus for the cleaning of waste streams |
| 08/18/1999 | CN1044701C Apparatus for stirring fermenter |
| 08/17/1999 | US5938937 Hydrophilic dispersion polymers for treating wastewater |
| 08/12/1999 | WO1999040036A1 Process for controlling foam in a treatment reactor |
| 08/12/1999 | CA2261465A1 Apparatus for the cleaning of waste streams |
| 08/11/1999 | EP0934906A1 Process for modifying sludge consistency |
| 08/11/1999 | EP0934232A1 Process for disinfecting organic waste sludge |
| 08/10/1999 | US5934839 Cationic water-soluble polymer precipitation in salt solutions |
| 08/05/1999 | DE19741797C1 Unit introducing reduced quantity of polymer into sludge, yet promoting increased de-watering in downstream plant |
| 08/03/1999 | US5932182 Reactor for high temperature, elevated pressure, corrosive reactions |
| 08/03/1999 | US5931772 Use of spent bauxite as an absorbent or solidification agent |
| 07/29/1999 | WO1999037589A1 Thickening of aqueous mineral suspensions |
| 07/29/1999 | WO1999037585A1 Conditioning method for dehydrating clarification sludge |
| 07/29/1999 | DE19802238A1 Mechanical dewatering of sewage sludge to level suitable for combustion |
| 07/29/1999 | CA2318092A1 Conditioning method for dehydrating clarification sludge |
| 07/29/1999 | CA2317636A1 Thickening of aqueous mineral suspensions |
| 07/28/1999 | EP0931593A2 Waste solid treatment apparatus |
| 07/28/1999 | EP0813502A4 Electrocoalescent system for decontaminating water streams |
| 07/28/1999 | CN2330649Y Mud-dreg separating contact type clarification tank |
| 07/27/1999 | US5928521 Reduction of oxygen demand by treating organic material-containing water within vertially oriented multicompartment oxygen bubble reactor having controlled fluid backflow between compartments |
| 07/27/1999 | CA2248595C Off-shore sewage treating and handling apparatus and method |
| 07/27/1999 | CA2006453C An extraction process and apparatus to remove pcb's from soil and sludge |
| 07/22/1999 | WO1999036374A1 Method for treating sewage sludge |
| 07/22/1999 | WO1999036365A1 New flocculant for the treatment of waste waters |
| 07/22/1999 | WO1999036173A1 Method for treatment of sludge from water works |
| 07/22/1999 | DE19801741A1 Clarification sludge is treated to produce humus for agricultural use |
| 07/21/1999 | EP0929582A1 Cationic water-soluble polymer precipitation in salt solutions |
| 07/15/1999 | WO1999035098A1 Dewatering of sludges deriving from paper industry |
| 07/15/1999 | WO1999035084A1 Supercritical treatment of adsorbent materials |
| 07/15/1999 | DE19800900A1 Treatment of biogenic residue and waste, e.g. sewage sludge, fermentation residue or fruit, vegetable and kitchen waste |
| 07/15/1999 | CA2315807A1 Dewatering of sludges deriving from paper industry |
| 07/13/1999 | US5922204 Method and apparatus for bioremediation of mixed hazardous wastes |
| 07/08/1999 | DE19811969C1 Biodegrading sludge containing hydrocarbons |
| 07/07/1999 | EP0927703A2 Method and apparatus for dehydration and drying of solid-liquid mixtures |
| 07/07/1999 | EP0927702A2 Composition, method and apparatus for safe disposal of oil contaminated filter media |
| 07/07/1999 | EP0927084A1 Treatment of waste |
| 07/01/1999 | WO1999032207A1 Wastewater treating agent, method for wastewater treatment, sludge dehydrant, and method for sludge treatment |
| 06/30/1999 | EP0742785B1 Aerobic fermentation promoting device of excrements, aerobic fermentation system using it and compost therefrom |
| 06/29/1999 | US5916448 Chemical conditioning of liquid and semi-liquid sludge for dewatering, odor control, pathogen control, nutrient enhancement of the residual, and handling characteristics |
| 06/29/1999 | US5916123 Fixation and stabilization of metals in contaminated soils and materials |
| 06/24/1999 | WO1999030846A1 Method and system for treating organic waste |
| 06/24/1999 | DE19756446A1 Removal of heavy metals from sewage sludge and waste water using lime |
| 06/23/1999 | EP0924168A1 Method and apparatus for sludge reduction in an aerobic waste water treatment system |
| 06/23/1999 | EP0923900A1 Dry type toilet system |
| 06/23/1999 | CN1220313A Marsh gas generation new method and marsh gas fast generator |
| 06/22/1999 | US5914031 Increasing kinetics of waste effluents or sludge decomposition by adjusting reaction temperature and pressure in the presence of reducing agent without adding hydrogen or a catalyst |
| 06/17/1999 | CA2256218A1 Composition, method and apparatus for safe disposal of oil contaminated filter media |
| 06/17/1999 | CA2225106A1 Dry type toilet system |
| 06/16/1999 | CN2324149Y 沼气自动提升循环厌氧塔 Anaerobic methane cycle automatically upgrade tower |
| 06/16/1999 | CN1219514A Mud dewatering device |
| 06/16/1999 | CN1219513A New technology for producing methane by high-concentration fermentation of urban organic garbage |
| 06/16/1999 | CN1219512A Method for removing chlorine ion in salt and alkali sludges |
| 06/09/1999 | EP0738189B1 Oxidative cleaning process of contaminated slurries or slurried earth |
| 06/09/1999 | EP0735928B1 Contaminant removal |
| 06/03/1999 | WO1999026899A1 Composting arrangement |
| 06/02/1999 | CN2321782Y Artificial natural gas marsh gas continuous generator |
| 06/01/1999 | CA2147647C Anthraquinone inhibition of methane production in methanogenic bacteria |
| 05/27/1999 | WO1999025658A1 Clarifier with sludge dewatering |
| 05/27/1999 | WO1999025655A1 Waste-water, sludge and wet mud disposal system |
| 05/27/1999 | DE19752017A1 Removing moisture from sludge, paste and suspension |
| 05/27/1999 | CA2315925A1 Clarifier with sludge dewatering |
| 05/26/1999 | EP0917541A1 Biodegradable complexing agents for heavy metals |
| 05/25/1999 | US5906931 Method and device for digestion of sludge |
| 05/25/1999 | US5906750 Efficient flocculation of digested thermophilic biological sludge |
| 05/20/1999 | WO1999024372A1 Apparatus for dewatering previously-dewatered municipal waste-water sludges using high electrical voltage |
| 05/20/1999 | WO1999024371A1 Device for thickening liquids or sludges |
| 05/20/1999 | WO1999024140A1 Filter bed differential pressure monitoring system |
| 05/20/1999 | DE19749757A1 Vorrichtung zur Eindickung von Flüssigkeiten oder Schlämmen Apparatus for thickening liquids or sludges |