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In chemical engineering, biochemical engineering and protein purification, cross-flow filtration[1] (also known as tangential flow filtration[2]) is a type of filtration (a particular unit operation). Cross-flow filtration is different from dead-end filtration in which the feed is passed through a membrane or bed, the solids being trapped in ...
A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. Filters cleanse water to different extents, for purposes such as: providing agricultural irrigation, accessible drinking water, public and private aquariums, and the safe use of ponds and swimming pools.
A jet of air carries the filter medium with solid into a wash zone above the filter and is separated. The cleaned filter material is then added back into the deep-bed filter. Water and Solid flows are counter current, therefore increasing the solid removal: Water treatment- improved separation techniques during pre-treatment
Portable water purification unit used by International Red Cross and Red Crescent. Portable water purification devices are self-contained, easily transported units used to purify water from untreated sources (such as rivers, lakes, and wells) for drinking purposes. Their main function is to eliminate pathogens, and often also of suspended ...
A Berkefeld filter[ 1] is a water filter made of diatomaceous earth ( Kieselguhr ). It was invented in Germany in 1891, and by 1922 was being marketed in the United Kingdom by the Berkefeld Filter Co. [ 2] Berkefeld was the name of the owner of the mine in Hanover, Germany, where the ceramic material was obtained.
Filtration is used to separate particles and fluid in a suspension, where the fluid can be a liquid, a gas or a supercritical fluid. Depending on the application, either one or both of the components may be isolated. Filtration, as a physical operation enables materials of different chemical compositions to be separated.
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