How do you design an oxidation pond (waste stabilization pond)?

Oxidation ponds use natural processes for wastewater treatment. Design parameters: facultative ponds have depth 1-2m, detention time 5-30 days, and organic loading 100-400 kg BOD/ha/day depending on temperature. Surface area = BOD load / loading rate. Include inlet distribution, baffles for flow pattern, embankment with 1:3 slopes and freeboard 0.5-1m. Anaerobic ponds (deeper) can precede for high-strength waste. Maturation ponds provide pathogen removal. Consider wind direction for odor control.