A sketch of a typical wastewater treatment system that provides primary treatment (e.g., settling or clarification) plus secondary biological treatment (activated sludge) and...

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...

A sketch of a typical wastewater treatment system that provides primary treatment (e.g., settling or clarification) plus secondary biological treatment (activated sludge), with...

A sketch of a typical wastewater treatment system that provides primary treatment only (e.g., settling or clarification), with sludge treated in a drying bed for 180 days.