Question

difference between flocs and anaerobic digester?​

Answer 1

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Flocs are the mixtures of heterotrophic aerobic microbes that grow in aeration tank during secondary treatment of effluent. They consume a major part of the organic matter of the effluent. In anaerobic sludge digesters, anaerobic bacteria grow and digest the rest of the organic compounds and produce biogas.

Answer 2

Answer:

Flocs :

• They breakdown organic matter aerobically.
• They breakdown orgamic matter in primary effluent.
• They do not produce biogas.

Anaerobic Sludge Digester :

• They breakdown organic matter anaerobically.
• They breakdown organic matter in secondary effluent.
• They produce biogas (mixture of methane, $H _{2}S$ and $CO_{2}$.