Bacteria and fungi are the two categories of naturally occurring microbes in sewage. The bacteria along with the fungal mycelia form the floes. These floes are utilised during the secondary treatment of sewage. The primary effluent after separation of the grit and debris is taken to the secondary treatment.
Here, the effluent is passed to an aeration tank, where it is constantly agitated and air is pumped into it. This leads to vigorous growth of bacteria and floe formation. The bacteria in these floes consume organic matter, thus decreasing the BOD of the sewage.
Name the two different categories of microbes naturally occurring in sewage water. Explain their role in cleaning sewage water into usable water.
Answers
Mahesh
Bacteria and fungi are the two categories of naturally occurring microbes in sewage. The bacteria along with the fungal mycelia form the floes. These floes are utilised during the secondary treatment of sewage. The primary effluent after separation of the grit and debris is taken to the secondary treatment.
Here, the effluent is passed to an aeration tank, where it is constantly agitated and air is pumped into it. This leads to vigorous growth of bacteria and floe formation. The bacteria in these floes consume organic matter, thus decreasing the BOD of the sewage.