Abstract :
The biological treatment of sewage is the strengthening of water self-purifi cation. After removing the pollutants in the sewage, the microorganisms must be separated from the water. This separation is mainly through the flocculation of microorganisms and the ingestion of protozoa and rotifers completed. This paper mainly introduces the application of microorganisms in sewage treatment, and several major sewage biological treatment technologies.
Keyword :
Microorganism; sewage treatment; activated sludge method; biofi lm method