3 Difference Between B.O.D & C.O.D
Following are the 3 difference between B.O.D (Biochemical oxygen demand) and C.O.D (Chemical oxygen demand) are described below:
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B.O.D (Biochemical oxygen demand)
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C.O.D (Chemical oxygen demand)
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1. The amount of oxygen required to carryout the biological decomposition of dissolved solids in sewage under aerobic conditions at standard temperature is known as biochemical oxygen demand.
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1. The amount of oxygen required to carryout the chemical decomposition of organic matters in sewage is known as chemical oxygen demand.
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2. It is generally less than C.O.D.
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2. In general, C.O.D of sewage is higher than B.O.D.
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3. It indicates the amount of biologically active organic matter present in the sewage.
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3. It indicates the amount of biologically active as well as biologically inactive organic matter present in the sewage.
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