银盐沉淀法测定高氯废水COD的方法改进

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英文篇名：An improvement of silver salt precipitation method for COD determination of the high chlorine wastewater 作者：陈洁 ; 高倩倩 ; 黄麟杰 ; 万小超 英文作者：Chen Jie;Gao Qianqian;Huang Linjie;Wan Xiaochao;Deyang environmental monitoring center station; 关键词：高氯废水 ; 化学需氧量 ; 银盐沉淀法 ; 悬浮物 英文关键词：high chlorine wastewater;;chemical oxygen demand;;silver salt precipitation method;;suspended substance 中文刊名：YNHG 英文刊名：Yunnan Chemical Technology 机构：德阳市环境监测中心站; 出版日期：2019-04-30 09:50 出版单位：云南化工 年：2019 期：v.46;No.237 语种：中文; 页：YNHG201902056 页数：3 CN：02 ISSN：53-1087/TQ 分类号：161-162+165

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。
        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.

引文

[1]梁晓贤,冯霞.高氯废水COD测定方法的进展与评述[J].化工技术与开发,2012,41(8):35-37
    [2]贾琰.高含氯废水中低化学需氧量(COD)检测方法[J].环保科技,2017,23(1):41-46
    [3]金若菲,滕丽曼,周集体.高氯离子废水CODCr测定的方法研究[J].环境污染与防治,2003,25(5):310-311
    [4]吴雨龙,尚建华.银盐沉淀法快速测定火电厂高氯脱硫废水COD[J].中国给水排水,2014,30(12):151-154
    [5]王俊荣,张淑芬,王红霞.用硝酸银消除高浓度氯离子对COD测定的干扰及测定废液中银的回收[J].化工环保,2007,27(6):579-582
    [6] HJ 828-2017,水质化学需氧量的测定重铬酸盐法[S].
    [7] HJ/T 70-2001,高氯废水,化学需氧量的测定,氯气校正法[S].