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How do nutrients in sewage affect the removal of organic matter
How the nutrients in sewage affect the removal of organic matter can be divided
into two cases: urban sewage and industrial wastewater. Generally, nutrients
such as nitrogen and phosphorus in urban sewage can meet the needs of
microorganisms, and there is a lot of surplus. However, when the proportion of
industrial wastewater is large, we should pay attention to accounting whether
the ratio of carbon, nitrogen and phosphorus meets 100:5:1. If the sewage lacks
nitrogen, ammonium salt can usually be added; if the sewage lacks phosphorus,
phosphoric acid or phosphate can usually be added.