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亞洲足球比分网 3. what are the daily drinking water contaminants
亞洲足球比分网 answer: main sources of drinking water pollution: industrial wastewater, agricultural wastewater, livestock pollution, domestic sewage, etc. and component it concludes: heavy metals, pesticides, antibiotics, chemical drugs, chloroform, rust, sediment, large particles of suspended solids, bacteria, microbial pathogens, etc.
亞洲足球比分网 4. is water purifier really useful?
亞洲足球比分网 answer: after analysis of impurity in water, many consumers will doubt that whether the small is useful? we can take the ultrafiltration water purifier with 0.01 microns filters as an example. the filters can effectively filter sediment, rust, suspended particles, bacteria, colloid, organic matter and other impurities.
亞洲足球比分网 the activated carbon can remove the water smell, residual chlorine and organic compounds (synthetic detergents, pesticides, herbicides, pesticides, synthetic dyes, three halogen methane, haloacetic acids, endocrine disrupting chemicals (edcs) such as o phthalic acid esters paes, etc.), heavy metal(mercury, silver, cadmium, lead, nickel, chromium), radioactive substances. the filter is one of the earliest and most widely used water purification materials.
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