Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Search any question & find its solution
Question: Answered & Verified by Expert
The major part of the organic matter in the sewage water is decomposed in:
BiologyMicrobes in Human WelfareNEET
Options:
  • A Primary treatment
  • B Aeration tank/oxidation pond
  • C Anaerobic sludge digester
  • D Tertiary treatment
Solution:
1633 Upvotes Verified Answer
The correct answer is: Anaerobic sludge digester
In sewage treatment plant aerobic microbes cause breakdown of organic matter present in water and forms flocs. These flocs are anaerobically degraded in anaerobic sludge digester by methanogens forming mixture of gase consisting of methane, hydrogen etc.

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.