Keep the sludge remaining in the sludge pond, wai will sleep at the bottom of the well created and request excess sludge degradation occurs, not (Anaerobic digestion), sediment and naloi some will flow into the pond to present balanced treatment in circulating in the system, steps further by this excess sludge is used as food and bacteria that reside in the pond aeration æ kanap range that have no waste water or food. This may cause the bacteria die because they lack nutrients. It also helps to reduce sediment occurs, a low ebb.
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