Why can the hepa filter of the vacuum cleaner be washed and the air purifier not work? 1.Different materials,In fact, HEPA can't be washed,The materials of the foreign industrial vacuum cleaner HEPA are mostly blended with glass fiber, polyurethane and other materials,Water washing will have a certain impact on the material,Originally, HEPA did efficient filtering,Washing will reduce the accuracy,Therefore, it is not recommended to wash water (it is not excluded that some HEPA that can be washed is not HEPA at all,BIA certification certificate can be requested for verification ).2.There is a paper filter for air purification,After washing, it will deform,Lose precision.HEPA precision H14 standard (BIA certification): 0.3 micron filtration efficiency D.O.P99.999%, 0.18 Micron D.O.P99.95%,Compared with the general air purification filter HEPA accuracy is higher.3.Other industrial vacuum cleaners (imported,The warranty machine has not found credible relevant data at present. the configuration filter is mostl
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What are the filtration equipment that can handle sewage, and what is the filtration process? At present,The deep filtration process of sewage is divided into sand filtration and filter cloth filtration,Sand filtration is a traditional process,Lower technical requirements,Relatively weak processing capacity;At present, filter cloth filtering is more popular,The filtration effect should be better than sand filtration,And filter cloth filter equipment is usually integrated equipment,Easy to install and use.Convenient maintenance later,The cost is only for filter cloth replacement,Usually, the service life of the filter cloth is 3 years,The domestic price of filter cloth is about 300 yuan per square meter.There are two domestic companies specializing in the research and development and sales of water treatment equipment,One is Shanghai Anding Ji water treatment company,Relying on Tongji University,The company has more water treatment products,Among them, the 'mobile flushing vertical filter' process dedicated t
