In pure water systems, activated carbon mainly relies on its large specific surface area and strong adsorption capacity to remove specific impurities from water. Its core functions include:
- Residual chlorine and oxidants: such as sodium hypochlorite
- Odor and odor: such as earthy mold odor (from geosmin, 2-methylisoborneol)
- Volatile organic compounds: such as trihalomethanes (THMs), which are by-products of chlorine disinfection, benzene, toluene, pesticides, herbicides, etc
- Partial organic pollutants: natural organic compounds such as humic acid, fulvic acid, etc
- Partial pigments and colloidal substances
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