A completely mixed activated sludge plant is not performing particularly well. You calculate a F:M of...

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Civil Engineering

A completely mixed activated sludge plant is not performingparticularly well. You calculate a F:M of 1.5mg/mgÂ·day^-1. What would you recommend to solve theproblem?
a.
Raise the pH
b.
Increase the dissolved oxygen concentration in the aerationtank
c.
Lower the pH
d.
Reduce the amount of sludge wasted

Answer & Explanation Solved by verified expert

3.7 Ratings (514 Votes)

FM ratio means Food to micro organisms ratio In other words mass of food applied per unit mass of micro organism Range of FM ratio 02 to 06 for conventional activated sludge In this case 15 indicates high FM ratio High FM ratio means high quantity of See Answer

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	a.	Raise the pH
	b.	Increase the dissolved oxygen concentration in the aerationtank
	c.	Lower the pH
	d.	Reduce the amount of sludge wasted