What is autotrophic biomass made up of?

What is the monthly concentration of solids produced by secondary sewage effluent?

The sludge particles concentration is increased by the growth of the organism in aeration tanks.

What is the percentage removal of BOD by stabilization ponds?

The measure of pH is the __ ion concentration.

What does the bacterium use to grow?

What is the range of pH above which aeration is required?

How is air pumped in the aerator unit?