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Question

In the waste treatment plant (WWTP) air is pumped into water to:

A
Support the growth of anaerobic bacteria
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B
Support the growth of aerobic bacteria
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C
Inhibit the growth of anaerobic bacteria
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D
Inhibit the growth of aerobic bacteria
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Solution

The correct option is B Support the growth of aerobic bacteria
Wastewater aeration is the process of adding air into wastewater to allow aerobic bio-degradation of the pollutant components. It is an integral part of most biological wastewater treatment systems. It helps the aerobic bacteria grow. The microbes feed on the organic material, forming flocs which can easily settle out.

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