Patents
Sitemap › B01 - Physical or chemical processes or apparatus in general › B01D - Separation › B01D 37 - Processes of filtration
Patents for B01D 37 - Processes of filtration (4,716)
03/1983
03/29/1983US4378296 Flux filter
03/22/1983US4377485 Apparatus and method for clarification of water using combined flotation and filtration processes
03/16/1983EP0074221A1 Filter aid compositions, methods of making them and filters containing them
03/08/1983CA1142452A1 Purification of liquids with treated filter aid material and active particulate material
03/02/1983EP0073076A2 Method for continuously thickening suspensions
03/01/1983US4375526 Anionic polymers for reduction of viscosity of a magnesium hydroxide filter cake paste
03/01/1983CA1141943A1 Process and equipment for the extraction of solid material from liquid containing solids granulated by heat effect
02/1983
02/09/1983EP0071259A2 Process for inserting a filter aid or precoat layer in a filter press, and filter press for carrying out the process
02/08/1983US4372859 Method of removing minuscule solid particles from liquid and system therefor
01/1983
01/26/1983EP0070589A2 Backwash precoat filter candle
01/18/1983US4369116 Liquid filtration method
01/12/1983EP0069528A2 Filtration method and apparatus
01/04/1983US4367150 Filtering method and apparatus
12/1982
12/29/1982EP0067959A2 Transportable apparatus for treating used emulsions, solutions and waste waters
12/14/1982CA1137671A1 Ultrafiltration process for the concentration of polymeric latices
12/09/1982WO1982004198A1 Method and device at precoat preparation and application
12/08/1982EP0066256A2 Use of calcined alpha-Al2O3 as a filtration aid for the purification of alcaline solutions
11/1982
11/30/1982US4361486 Filter media, method for oxidizing and removing soluble iron, method for removing and inactivating microorganisms, and particulate filter aid
11/23/1982CA1136069A1 Apparatus and method for separating entrained particulate matter from a conveying fluid
11/17/1982EP0064647A1 Filter media, method for oxidizing and removing soluble iron, method for removing and inactivating microorganisms, and particulate filter aid
11/09/1982US4358827 Controlling the treatment of mixtures comprising solid and liquid
11/09/1982US4358383 Method of cleaning a filter surface in situ in a pressure filtering apparatus for liquids and pressure filtering apparatus for carrying out the method
11/09/1982US4358381 Sewage treatment
10/1982
10/26/1982CA1134308A1 Filtration of a coal liquid slurry using an alkylmethacrylate copolymer and an alcohol
10/26/1982CA1134307A1 Filtration of a coal liquid slurry using an alkylmethacrylate copolymer
10/26/1982CA1134306A1 Filtration of a coal liquid slurry using polyisobutylene
10/26/1982CA1134305A1 Filtration of a coal liquid slurry using an ethylene vinyl acetate copolymer and an alcohol
10/26/1982CA1134282A1 Filtering with pressure drop increasing stepwise
10/05/1982US4352739 Completion and workover fluid filtration system
09/1982
09/21/1982US4350620 Thermoplastic polymer
09/15/1982EP0059990A1 A process for the separation of crystalline silicates
09/08/1982EP0059629A1 Filters
08/1982
08/17/1982US4344846 Filtration using expanded styrene-polymer and polyolefin micro-bits
08/10/1982US4343710 Filter presses and a method of cleaning same
08/03/1982US4342638 Flashed-down residue treatment including filtering and solvent repulping
07/1982
07/27/1982US4341636 Treatment of wastewater
07/27/1982US4341628 Belt pressure filter
07/27/1982US4341124 Automatic sampling apparatus
07/21/1982EP0056117A1 Process for treating a liquid
07/21/1982EP0056090A1 Method of dewatering sludges containing mineral oils with recovery of the oil fraction
07/20/1982US4340487 Process for purifying water
06/1982
06/22/1982US4336143 Controlling the treatment of mixtures comprising solid and liquid
06/22/1982US4336136 System for processing soils contaminated by crude oils or other refined petroleum products
06/15/1982CA1125933A1 Device for the regulation of a water-removing machine
06/15/1982CA1125668A1 Liquid treatment apparatus
06/15/1982CA1125667A1 Liquid treatment apparatus
06/09/1982EP0053251A1 Method of dewatering sewage sludge in filter presses
06/09/1982EP0053250A1 Method of dewatering sewage sludge in filter presses
05/1982
05/12/1982EP0051456A1 Method for regenerating powdery ion-exchange resins
05/11/1982US4329235 Apparatus and method for dispensing purifying media mixture
05/04/1982US4328097 Apparatus for filtering frying oil
04/1982
04/06/1982US4323365 Dewatering of solid residues of carbonaceous materials
04/06/1982CA1121291A1 Control system and method for a plurality of solvent dewaxing filters
03/1982
03/31/1982EP0048448A1 Apparatus for purifying industrial waste water and the like
03/30/1982US4322297 Controller and control method for a pool system
03/30/1982CA1120867A1 Two layer wound-on-core medium filter element
03/10/1982EP0047118A1 Vacuum filtration of clay slurries
03/02/1982US4317732 Liquid reconditioning system
02/1982
02/16/1982US4315824 Filtration of coal-derived liquids containing particulate solids
02/10/1982EP0045562A2 Filter aid and pigment dispersant
02/02/1982US4313919 Process for removing fine solids from phosphoric acid by vacuum filtration
02/02/1982US4313830 Method for increasing the cross-flow microfiltration fluxes of waste waters containing suspended solids and/or emulsified oil
01/1982
01/26/1982US4312763 Filter aid prepared by flash heating of thermally expandable coal particles
01/12/1982US4310422 Method of processing and recirculating filtration residues
12/1981
12/29/1981CA1115009A1 Catch basin processing apparatus
12/16/1981EP0041717A1 Apparatus for the purification of scalding water
12/10/1981WO1981003484A1 Dewatering fine coal slurries using organopolysiloxanes
12/10/1981WO1981003483A1 Dewatering fine coal slurries using two types of organopolysiloxanes
12/09/1981EP0041251A1 Method of removing fine suspended solids from effluent streams
12/02/1981EP0040906A2 Dewatering fine coal slurries using organopolysiloxanes
12/02/1981EP0040903A2 Dewatering fine coal slurries using two types of organopolysiloxanes
12/02/1981EP0040827A1 A method for increasing the cross-flow microfiltration fluxes of waste waters containing suspended solids and/or emulsified oil
12/01/1981US4303533 Method of removing fine suspended solids from effluent streams
12/01/1981US4303524 Rotary vacuum precoat filter
12/01/1981US4303513 Dual pick-up fuel strainer assembly
11/1981
11/24/1981US4302335 Reconditioning of phosphate ester hydraulic control fluids
10/1981
10/27/1981US4297211 Filtering apparatus
10/21/1981EP0038042A2 Filtration device
10/20/1981CA1111158A1 Purification of waste water
10/07/1981EP0006860B1 Apparatus for automatic control of the closing strenght needed for making tight the filter elements in a press filter
10/06/1981US4293414 Slotted sheet filter element
10/06/1981CA1110181A1 Filter element with slotted precoat retainer sheet
09/1981
09/29/1981CA1109764A1 Dewatering ore concentrates
09/22/1981US4290897 Dewatering fine coal slurries using two types of organopolysiloxanes
09/22/1981US4290896 Dewatering fine coal slurries using organopolysiloxanes
09/22/1981US4290894 Process and apparatus for cleaning contaminated water
09/15/1981US4289630 Filter cake removal method and apparatus
09/15/1981US4289628 Froth flotation and filtration in three-dimensional filter
09/08/1981US4288329 Method and apparatus for cleaning fine waste material mixed with oil and water
09/01/1981CA1107911A1 Method for preparation of expanded perlite structures
08/1981
08/26/1981EP0034305A2 Process for working-up and recycling filtration residues
08/25/1981US4285821 Fibrous filter-aids
08/18/1981US4284501 Control apparatus for purifying acumulated condensate
08/04/1981US4282105 Filter
08/04/1981US4282103 Method for controlling flocculant addition to tar sand tailings
08/04/1981US4282094 Filtering apparatus
08/04/1981CA1106510A1 Sludge thickening
07/1981
07/28/1981US4280913 Water purification process
07/22/1981EP0032166A2 Pre-coated filter
07/14/1981CA1104906A1 Dewatering of mineral suspensions
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