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11COD13 12 16161717.

COD2017CODWW2 4.

COD Chemical Oxygen Demand BODBiochemical Oxygen Demand (.

(COD)mg/L (BOD).

COD 1. COD 2. .

1999----.

CODBOD COD ()COD.

COD CODChemical Oxygen Demand.

COD 1980