| COD_(Cr)测定中氯离子的影响及消除 |
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| 引用本文： | 王志强,刘新泉,熊红英.COD_(Cr)测定中氯离子的影响及消除[J].石油化工,1998(4). |
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| 作者姓名： | 王志强 刘新泉 熊红英 |
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| 作者单位： | 胜利石油管理局环境监测总站 |
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| 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。
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| 关 键 词： | 采油废水 化学需氧量 氯离子 掩蔽 |
The Effect and Elimination of Chlorion Interference in the Determination of CODCr of Sewage Water |
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| Abstract: | t is known that high concentration of chlorion affects the determination of CODCr 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 CODCr has a low value,then there will be a large error in the CODCr 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 CODCr without occulting chlorion and substracting from it the CODCr caused by chlorion can reflect with accuracy the real CODCr of the oil field sewage water. |
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| Keywords: | oil field sewage water chemical oxygen demand(COD) chlorion occult |
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