WASTEWATER
By Rick Lallish
Even though there are many ways to determine wasting amounts, what is the main purpose of wasting?
A. Maintain acceptable sludge blanket depth
B. Maintain proper facultative levels in the lagoon
C. Maintain effluent total suspended solids requirements
D. Maintain a sludge age that produces the best effluent
Answer: D. One of the best ways to have successful process control is to have proper wasting procedures and calculations. By wasting, you maintain control of your food/microorganism levels and median cell retention time, or sludge ages. There are many ways to waste; each when correctly performed will achieve a sludge age that produces the best
