COD_(Cr)测定中氯离子的影响及消除  被引量:8

The Effect and Elimination of Chlorion Interference in the Determination of CODCr of Sewage Water

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作  者:王志强[1] 刘新泉[1] 熊红英[1] 

机构地区:[1]胜利石油管理局环境监测总站

出  处:《石油化工》1998年第4期284-286,共3页Petrochemical Technology

摘  要:根据油田采出水中氯离子含量高,对CODCr测定影响较大的特点,通过试验探讨高含氯对污水CODCr测定的影响及消除其影响的方法。试验结果表明,对高含氯、低CODCr的污水用国标方法测定CODCr时会产生较大误差,且误差随氯离子含量的增加而增大;不掩蔽氯离子测定污水CODCr总值,用CODCr总值减去氯离子产生的CODCr值则能较准确地反映污水的真实CODCr值。t is known that high concentration of chlorion affects the determination of CODCr in oil field sewage water.This paper studies the effect and method of elimination of chlorion interference.It can be shown that if chlorion has a high concentration and CODCr has a low value,then there will be a large error in the CODCr value determined by the national standard method,and the higher the concentration of chlorion,the larger will be the error.It is found that determining the total  CODCr without occulting chlorion and substracting from it the CODCr caused by chlorion can reflect with accuracy the real CODCr of the oil field sewage water.

关 键 词:采油废水 化学需氧量 氯离子 污水处理 环境监测 

分 类 号:X740.3[环境科学与工程—环境工程]

 

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