| Patents for C02F 11 - Treatment of sludge; Devices therefor (21,423) |
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| 05/20/1999 | DE19740401C1 Process breaks down industrial particulate or gaseous wastes in foam |
| 05/19/1999 | EP0848743B1 Processing of resilient materials |
| 05/18/1999 | CA2019818C Melting disposal method of sludge |
| 05/12/1999 | EP0914868A2 Method for the treatment (valorization and disposal) of oil sludge |
| 05/12/1999 | DE19749530A1 Separating biological waste from sand in basin |
| 05/12/1999 | CN1216519A Sludge handling and feeding system |
| 05/11/1999 | US5901475 Process of dewatering dredge spoil |
| 05/11/1999 | US5901385 Dry type toilet system |
| 05/06/1999 | WO1999021804A1 Stabilized liquid lime dispersion for sewage treatment |
| 05/06/1999 | DE19800224C1 Anaerobic treatment of waste material with bacteria |
| 05/04/1999 | CA2075794C Treatment of wastes |
| 04/29/1999 | WO1999020667A1 Water-soluble polymer, process for the production of the same, and use thereof as polymeric coagulant |
| 04/29/1999 | WO1999020568A1 Biodegradable complexing agents for heavy metals |
| 04/29/1999 | CA2308191A1 Biodegradable complexing agents for heavy metals |
| 04/28/1999 | EP0910449A1 Process for recovering components of a float material from waste water treatment system |
| 04/28/1999 | EP0736162B1 A process and a device in drying of organic and/or unorganic materials |
| 04/28/1999 | CN1215030A Post-dosing centrifugal dewatering technology for slurry machine used in municipal engineering |
| 04/21/1999 | EP0909261A1 Heating and reaction system and method for superchemical treatment of a liquid stream |
| 04/21/1999 | CN1214323A Sludge treating process |
| 04/20/1999 | US5895832 Process for the treatment of contaminated material |
| 04/20/1999 | US5895577 Decomposed biologically by bacteria and exposed to sonic radiation to split cell walls of the microorganisms, improved, reduces residual biological solid sludge |
| 04/15/1999 | DE19838963A1 Heated sludge drying assembly has series of stacked plates, each under rotating scraper blades |
| 04/15/1999 | DE19744653A1 Modular composting methane gas generator is self supporting structure of modular construction |
| 04/14/1999 | EP0908416A1 Anaerobic process for combined treatment of sewage sludges and organic solid waste |
| 04/14/1999 | EP0907427A1 Cleansing contaminants from a heterogeneous material using a sorption agent |
| 04/13/1999 | US5893979 Method for dewatering previously-dewatered municipal waste-water sludges using high electrical voltage |
| 04/07/1999 | EP0906892A1 Device for sludge dewatering |
| 04/07/1999 | EP0906248A1 Optimised method for the treatment and energetic upgrading of urban and industrial sludge purifying plants |
| 04/07/1999 | CN1213347A Off-shore sewage treating and transport apparatus and method thereof |
| 04/06/1999 | US5891413 Method of producing a carbide from an organic substance containing water |
| 04/06/1999 | US5891346 Process for treating a sulfide-containing alkaline aqueous effluent, by subjecting it to a wet air oxidation treatment which oxidizes sulfide ions to environmentally acceptable sulfur acid ions |
| 04/06/1999 | US5891342 Dewatering process |
| 04/01/1999 | WO1999015605A1 Device and method for upgrading energy- and chemical raw materials by reacting them with cheap raw materials |
| 04/01/1999 | DE19742977A1 Process to dry sewage sludge surrenders heated wet sludge to rotating |
| 03/31/1999 | EP0905265A1 Method of reducing water quantity in slurries of oxidic nickel ores by injection of acrylic flocculant |
| 03/31/1999 | EP0905091A1 Starch/cationic polymer combinations as coagulants for the mining industry |
| 03/31/1999 | EP0905090A2 Downflow hydrothermal treatment |
| 03/31/1999 | EP0904858A2 Method and relative system for the controlled reclamation of polluted basin bottoms |
| 03/31/1999 | EP0681603B1 Fuel pellets or briquettes made from sewage sludge solids and combustible solid waste |
| 03/30/1999 | US5888453 Continuous flow pasteurization of sewage sludge |
| 03/30/1999 | US5888404 Dissolving, oxidation, filtration, precipitation, filtration; pollution control |
| 03/30/1999 | US5888389 Apparatus for oxidizing undigested wastewater sludges |
| 03/29/1999 | CA2248479A1 Starch/cationic polymer combinations as coagulants for the mining industry |
| 03/25/1999 | WO1998050312A9 Process and apparatus for treating waste |
| 03/25/1999 | DE19754656C1 Laboratory test press measures the efficacy of sludge dewatering agents |
| 03/25/1999 | DE19741943A1 Production of methane-rich biogas useful in diesel engine |
| 03/24/1999 | EP0903325A1 Apparatus and method for ozone treatment of sewage sludge |
| 03/24/1999 | EP0902767A1 Process for the recycling of residues for the production of portland cement clinker |
| 03/24/1999 | CN2311491Y Continuous mud-removing water purification pot |
| 03/24/1999 | CN1211474A Treating method for urban garbage and special equipment |
| 03/23/1999 | US5885032 Cationic water-soluble polymer precipitation in salt solutions |
| 03/18/1999 | WO1999012854A1 Sludge or excreta treating agent, treating method, and treating apparatus |
| 03/17/1999 | EP0901808A2 Process and apparatus for treating exhaust air from thermal drying processes |
| 03/17/1999 | EP0807089B1 Centrifuge for thickening waste water sludge |
| 03/16/1999 | US5882513 Aeration, flocculation |
| 03/16/1999 | US5882146 Immobilization of materials |
| 03/11/1999 | WO1999011579A1 Sludges conditioning process from sanitation sewage treatment |
| 03/10/1999 | EP0900767A1 Process for recycling of sewage sludge |
| 03/10/1999 | EP0760718B1 Apparatus for the decontamination of heavy metals containing soil |
| 03/10/1999 | EP0729440B1 Facility for drying mud |
| 03/10/1999 | EP0646051B1 Treatment of waste materials for disposal |
| 03/10/1999 | CN1210508A Method and apparatus for treating liquid-containing material based on organic waste products |
| 03/09/1999 | US5879931 Aerobic fermentation promoting device of excrements, aerobic fermentation system using it and compost therefrom |
| 03/09/1999 | US5879566 Integrated steam reforming operation for processing organic contaminated sludges and system |
| 03/09/1999 | CA2149114C Process for stabilizing metals in ash |
| 03/04/1999 | WO1999010288A1 Lime enhanced pressure filtration of iron and steelmaking sludge |
| 03/03/1999 | EP0898985A1 Waste processing method under supercritical conditions and apparatus therefor |
| 03/02/1999 | US5876613 Sludge digestion method |
| 03/02/1999 | US5876594 Turbo oxidation system,--TOS, for wet combustion of COD-containing liquids and for COD-reduction by enzymes |
| 02/25/1999 | WO1999008968A1 Method and device for separating sludge-like material using a stream of finely divided air bubbles |
| 02/25/1999 | CA2300926A1 Method and device for separating sludge-like material using a stream of finely divided air bubbles |
| 02/24/1999 | CN2308596Y Automatic mud and dregs scraping device |
| 02/24/1999 | CN1208938A Method and equipment for processing waste materials |
| 02/23/1999 | CA2054613C Method of making capsules of dehydrated sludge and apparatus therefor |
| 02/18/1999 | WO1998051139A3 Method for reducing moisture content |
| 02/17/1999 | EP0811017B1 Cellulose particles, method for producing them and their use |
| 02/17/1999 | CN2307787Y Peripheral transmission half-bridge suction dredge |
| 02/11/1999 | WO1998050626A3 Method and device for separating the liquid contained in a suspension from the dispersed material in the suspension |
| 02/09/1999 | US5868942 Process for treating a waste sludge of biological solids |
| 02/09/1999 | US5868934 Method and apparatus for organic wastewater treatment capable of preventing decrease in permeation efficiency of submerged membrane without dilution |
| 02/09/1999 | US5868927 Apparatus and method for treating waste water from a residential home |
| 02/03/1999 | EP0894030A1 Process and apparatus for treating process streams from a system for separating constituents from contaminated material |
| 02/02/1999 | US5865956 Process and apparatus for the conversion of sludges |
| 01/28/1999 | DE19747882C1 Assembly to remove heavy non-biodegradable sediment from enclosed water treatment |
| 01/28/1999 | DE19747793C1 Simple, cost-effective, almost quantitative removal of white phosphorus from mixture |
| 01/27/1999 | EP0892764A2 Processing of sewage sludge into humus |
| 01/27/1999 | EP0775094B1 A method of stabilizing slurries |
| 01/26/1999 | US5863429 Method and apparatus for removing water from sludge and similar substances |
| 01/26/1999 | CA2120005C A dewatering method and agent |
| 01/20/1999 | EP0891305A1 Method and installation for solidifying large quantities of slurry-like materials |
| 01/20/1999 | EP0891304A1 Process for the microbiological purification of slurries containing heavy metals |
| 01/20/1999 | EP0717724B1 Sewage treatment apparatus and method |
| 01/13/1999 | EP0889859A1 Sludge handling and feeding system |
| 01/13/1999 | CN2303838Y Water tank of automatically concentrating and discharging sedimentated sludge |
| 01/12/1999 | US5858235 Sludge dehydrating press having cylindrical inner screen case |
| 01/12/1999 | US5858203 Transferring contamination from a substantially solid phase of the slurry to a substantially liquid phase of the slurry |
| 01/07/1999 | WO1999000334A1 Method of thermically treating a carbonaceous material-comprising aqueous fluid and an apparatus therefor |
| 01/07/1999 | WO1999000159A1 A method to reduce hexavalent chromium in soils and other |
| 01/07/1999 | EP0888256A1 Process and device for sewage treatment |
| 01/07/1999 | EP0888153A1 Method for hot and supercritical water oxidation of material using specific reactants |