Write any four waste water characters and their standards
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Physical Characteristics. · Turbidity. · Color. · Odor.
Chemical Characteristics due to Chemical Impurities. · Chemical Oxygen Demand (COD) · Total Organic Carbon (TOC) · Nitrogen.
Biological Characteristics due to Contaminants. · Biochemical Oxygen Demand (BOD) · Oxygen required for nitrification. · Microbial population.
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