The liquid has high contents of phosphorus and nitrogen, if the sludge has been______

How are the pathogens destroyed?

What is the range of retention time during anaerobic digestion?

Sludge treatment reduces the formation of struvite scales in pipes.

What is the hydraulic retention time for a completely mixed anaerobic digestion process?

What is the thickened concentration of the primary sludge?

What is the rate limiting step in anaerobic digestion?

Reducing the sludge volume increases ___