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The reason why the turbidity of carbon filter water is larger than that of sand filter water The landlord needs to backflush the sand filter immediately,And use compressed air,Carry out air-water washing,Artificial sand is required if necessary.First,The dirt in the pipe will be rushed out twoSince the flocculation treatment is carried out under alkaline conditions,Quartz sand will be corroded under alkaline conditions,After a long time, naturally,Therefore, the sand layer needs to be re-dispersed.
What are the filter materials for air purifiers? Filter material for air purifiers,1. filter, activated carbon and hepa are also available here.2. negative ion type.3, light catalyst.From the filter raw materials of the air purifier,At present, there are only four kinds in the market.1. the first one is a coarse filter screen,The main material is generally stainless steel mesh;2. the second one is generally HEPA filter screen,But there's a difference between this,Like some companies,It uses the nc hepa filter,This is different from a separate HEPA filter,The air purifier used the eighth generation of nc hepa filter screen,The main material is nano-fiber carbon;3. The third is a composite filter screen,The main function is to remove harmful substances such as odor and formaldehyde,The main material is the gold fiber of hacf coconut shell;4. The fourth is the photo catalyst filter screen,The main role is to remove bacteria, viruses, mites, etc,The main materials are titanium dioxide and light catalyst formed
