KCET · BIOLOGY · STD 12 - 8. Microbes in Human Welfare
The microorganisms involved in floc formation during sewage treatment are
- A anaerobic bacteria and fungus
- B aerobic bacteria and fungus
- C autotrophic bacteria and yeast
- D fungus and algae
Answer & Solution
Correct Answer
(B) aerobic bacteria and fungus
Step-by-step Solution
Detailed explanation
(B) aerobic bacteria and fungus,
An activated sludge is generated by aeration of sewage which consists of organic material containing large number of microorganisms consisting of bacteria (coliform, Clostridium, Pseudomonas, etc.) and fungi that form a filaments mesh-like filter and are called floc. This floc is then added to wastewater coming in after primary treatment. The mixture is aerated and agitated. The microorganisms feed on the organic matter in the wastewater and degrade it.
An activated sludge is generated by aeration of sewage which consists of organic material containing large number of microorganisms consisting of bacteria (coliform, Clostridium, Pseudomonas, etc.) and fungi that form a filaments mesh-like filter and are called floc. This floc is then added to wastewater coming in after primary treatment. The mixture is aerated and agitated. The microorganisms feed on the organic matter in the wastewater and degrade it.
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