Question

expand FOAM in biology ​

Answer 1

Answer:

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Explanation:

Principal causes: Foam type 1: protein materials not biodegraded due to excessively high F/M or, in a plant start-up situation, the optimum MLSS concentration not yet having been reached. Foam type 2: certain filamentous bacteria produce extracellular polymer (ECP) substances which are surface active and cause foaming.

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