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生化需氧量和化学需氧量概念及缩写,以及指标在水体质量中的意义和作用

问答题
2022-06-16 00:24
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正确答案

生化需氧量(BOD):指在好气条件下,微生物分解水体中有机物质的生物化学过程中所需溶解氧的量。是反映水体中有机污染程度的综合指标之一。
化学需氧量(COD):在规定条件下,使水样中能被氧化的物质氧化所需耗用氧化剂的量,以每升水消耗氧的毫克数表示。其值可粗略表示水中有机物的含量,用以反映水体受有机物污染的程度。


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