The amount of this wastewater mostly scum substances, nutrients (N, P), suspended solids (SS), organic (BOD5, COD) and the bacteria. Treatment of waste water in BOD5 higher levels of organic pollution. When discharged waste water, receiving resources that will make the water environment in the area contaminated by, affect the life of the species of aquatic organisms and make water supplies are no longer used for the purpose of living, eating and drinking. Besides, presence of nutrients such as nitrogen, phosphorus in wastewater in high concentration easily causes eutrophication of land and water resources-chemical receiving, creating favorable conditions for rapid growth of algae, causing the transformation of the region's ecosystems.
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