| 单词 | chemical oxygen demand |
| 释义 | > as lemmaschemical oxygen demand chemical oxygen demand n. Ecology the amount of oxygen required to oxidize fully the organic compounds contained in a volume of water, used as measure of water quality; abbreviated COD. ΚΠ 1933 Lancet 8 Apr. 758/2 The biochemical oxygen demand of sewage is dependent upon the presence of living agents to enable the ordinary chemical oxygen demand to be satisfied. 1963 M. J. Taras in F. J. Welcher Standard Methods of Chem. Anal. (ed. 6) II. b. xlvii. 2455 The chemical oxygen demand so consumed equals 0.23 mg. per liter for each 1.0 mg. per liter of Cl. 2005 Irish Times (Nexis) 3 Sept. 7 The discharge from the brewery into a sewer has resulted in an increase in both the chemical oxygen demand and suspended solids above the licensed limits permitted. < as lemmas |
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