Chemical oxygen demand is one of the important parameter in water monitoring.

化学需氧量是水质监测的一个重要参数。

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Temperature had an evident influence on chemical oxygen demand (COD) removal.

温度对系统COD去除能力有着比较明显的影响。

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There was 75.75% increase on chemical oxygen demand (COD).

生化耗氧量养殖初、末期相比较升高了75.75%；

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There was 75.75% increase on chemical oxygen demand (COD).

生化耗氧量养殖初、末期相比较升高了75.75%；

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