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प्रश्न
Explain – Importance of microbes in sewage (water) treatment in cities.
उत्तर
- In cities, sewage is carried to the processing unit and acted upon by microbial processes.
- Microbes capable of decomposing any compound as well as destroying pathogens like those which cause cholera, typhoid, etc., are mixed with sewage.
- Carbon compounds present in sewage are decomposed and gases like methane and CO2 are released.
- Xenobiotic chemicals present in sewage are decomposed by phenol oxidizing bacteria.
- The sludge that settles down can be used as fertilizer and the water released after microbial treatment can be treated and reused for different purposes, as it is environmentally safe.
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