超临界水氧化法测定TOC的氧化剂选择研究  

The selectivity of oxidant on measurement of total organic carbon based on supercritical water oxidation

作　　者：胡欢杰[1] 胡斯翰 林春绵[1] 

机构地区：[1]浙江工业大学生物与环境工程学院,浙江杭州310014 [2]浙江环境监测工程有限公司,浙江杭州310012

出　　处：《浙江工业大学学报》2015年第5期543-546,551,共5页Journal of Zhejiang University of Technology

基　　金：浙江省自然科学基金资助项目(LY12B07009);浙江省公益技术应用研究项目(2013C33G2020037)

摘　　要：选择高锰酸钾、重铬酸钾、双氧水三种氧化剂,在超临界水氧化的条件下测定含邻苯二甲酸氢钾模拟废水的总有机碳.实验研究了不同氧化剂、温度、氧化剂倍数等因素对废水中总有机碳检测的影响机制.结果表明:相对于高锰酸钾、重铬酸钾,双氧水作为氧化剂时所得的TOC检出率更高;在温度440℃,氧化剂倍数n=10的情况下,TOC检出率可达99%以上;在此条件下,用高锰酸钾作氧化剂时TOC检出率约为11%,重铬酸钾时约为8%;说明在超临界水氧化体系中,双氧水的氧化能力及效果明显强于高锰酸钾或重铬酸钾.Total organic carbon（TOC）of simulated wastewater containing potassium hydrogen phthalate was measured by supercritical water oxidation with potassium permanganate,potassium dichromate and hydrogen peroxide as oxidant respectively.The effects of the types of oxidant,temperature and oxidant multiple were explored.Results showed that the TOC detection rate X reached 99% when hydrogen peroxide was used as oxidant under the temperature of 440 ℃ and oxidant multiple of 10.Under the same condition the TOC detection rate X were only 11% and8% while the potassium permanganate and potassium dichromate were used as oxidant respectively.Therefore under the condition of supercritical water,the oxidation capability of hydrogen peroxide was more outstanding than potassium permanganate or potassium dichromate.

关 键 词：超临界水氧化法 总有机碳 高锰酸钾 重铬酸钾 双氧水 

分 类 号：X832[环境科学与工程—环境工程]