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The nitrogen and phosphorus requirement (in mg/L) for balanced microbial growth of a wastewater with BOD5...

The nitrogen and phosphorus requirement (in mg/L) for balanced microbial growth of a wastewater with BOD5 of 800 mg/L is most nearly

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Answer #1

Nutrient balance is an important issue since microbes require a particular nutrient ratio in order to carry out their activities at optimum efficiency.

Carbon, nitrogen and phosphorous are the most important of these nutrients and C:N:P ratios between 100:5:1 and 100:10:1 should be maintained in order to ensure maximum microbial activity in aerobic wastewater treatment.

Assume CNP ratio as 100:5:1

Nitrogen and Phosphorus requirement = (5+1)/(100+5+1) * 800 = 45.283 mg/L

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