This is an example of an optimal waste stabilization pond system, consisting of a 1-day, 3-m deep anaerobic pond followed by a 3-day, 1.5-m deep facultative pond, with treatment...

This is an example of an optimal waste stabilization pond system, consisting of a 5-day, 3-m deep anaerobic pond, a 15-day, 1.5-m deep facultative pond, and a 20-day, 1-m deep...