Can microbes be used in a sewage treatment plant?

In the liquid component of sewage, denitrifying bacteria reduce nitrate into dinitrogen gas which liberates nitrate from the sewage . The solid component of the sewage separated in primary treatment is fermented by bacteria anaerobically . Key microorganisms. Microorganiasms can also be categorized by its metabolism. read more

Bacteria are categorized by the way that they obtain oxygen. In wastewater treatment, there are three types of bacteria used to treat the waste that comes into the treatment plant: aerobic, anaerobic and facultative. Aerobic bacteria are used in most new treatment plants in an aerated environment. read more

One area of sewage treatment that is not well understood is the bacterial decomposition process. Bacteria may be aerobic, anaerobic or facultative. Aerobic bacteria require oxygen for life support whereas anaerobes can sustain life without oxygen. read more