What are the wastewater treatment methods
1. Physical method: Use physical action to separate pollutants that are mainly suspended in sewage without changing the chemical properties of water during the treatment process.
2. Chemical method: adding chemical substances to sewage, using chemical reactions to separate and recover pollutants in sewage, or convert them into harmless substances.
3. Biological method: Create an environment conducive to the growth and reproduction of microorganisms, so that microorganisms can proliferate in large quantities to improve the oxidation of microorganisms and decompose organic pollutants to be degraded and converted into harmless substances, so that sewage can be purified.
4. Biofilm method: A large number of microorganisms are multiplied on the material film to adsorb and degrade organic pollutants in the water.