Question

Name the two different categories of microbes naturally occurring in sewage water

Answer 1

Answer:

Two different categories of microbes naturally occurring in sewage water are aerobic and anaerobic microbes.

Role:

(i) Role of aerobic microbes in cleaning water Aerobic microbes grow excessively in the aeration tank and it consumes a major part of the organic matter. It helps in reducing the BOD of the effluent.

(ii) Role of anaerobic microbes in cleaning water In the settling-tank, anaerobic microbes digest the aerobic bacteria and fungi and produce gases like $CH_4$, $C0_2$, $H_2S$, etc. It makes the water less polluted to be released in the water bodies

Answer 2

Answer:

Bacteria and Fungi are two categories of naturally occurring microbes .