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What would happen if oxygen availability to activated sludge flocs is

a. It will slow down the rate of degradation of organic matter
b. The center of flocs will become anoxic, which would cause death
of bacteria and eventually breakage of flocs.
c. Flocs would increase in size as anaerobic bacteria would grow
around flocs.
d. Protozoa would grow in large numbers.

Biology - Main Course Book

Chapter 10. Microbes in Human Welfare


The answer is: (b)..............................
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