| 银盐沉淀法测定高氯废水COD的方法改进 |
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| 引用本文： | 陈洁,高倩倩,黄麟杰,万小超.银盐沉淀法测定高氯废水COD的方法改进[J].云南化工,2019(2). |
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| 作者姓名： | 陈洁 高倩倩 黄麟杰 万小超 |
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| 作者单位： | 德阳市环境监测中心站 |
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| 摘 要： | 对银盐沉淀法进行了方法改进。通常水样中的悬浮物对COD值的测定都有较大的影响,为避免悬浮物的损失而导致COD的测定结果偏低,在使用银盐沉淀法测定高氯废水前,先将水样中的悬浮物进行分离。分别测定悬浮物和滤液的COD,其COD值之和即为高氯废水的COD值。采用改进后的银盐沉淀法测定高氯废水,其结果更加准确可靠。
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| 关 键 词： | 高氯废水 化学需氧量 银盐沉淀法 悬浮物 |
An improvement of silver salt precipitation method for COD determination of the high chlorine wastewater |
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| Affiliation: | ,Deyang environmental monitoring center station |
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| Abstract: | The silver salt precipitation method was improved. The suspended substance in the water sample has a great influence on the COD value. In order to avoid the low COD result caused by the loss of suspended substance, the suspended substance in the water sample was separated before using silver salt precipitation method to determine the high chlorine wastewater. The COD of suspended substance and the COD of filtrate were determined respectively, and the sum of COD values was the COD value of high chlorine wastewater. The improved silver salt precipitation method for COD determination of high chlorine wastewater is more accurate and reliable. |
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| Keywords: | high chlorine wastewater chemical oxygen demand silver salt precipitation method suspended substance |
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