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超临界水氧化法处理剩余污泥的参数优化
引用本文:方 琳,刘振华,陶虎春.超临界水氧化法处理剩余污泥的参数优化[J].环境科学研究,2011,24(9):1029-1034.
作者姓名:方 琳  刘振华  陶虎春
作者单位:深圳大学化学与化工学院;北京大学深圳研究生院环境与能源学院城市人居环境科学与技术重点实验室;
基金项目:国家自然科学基金项目(50906058); 深圳市自然科学基金项目(509030)
摘    要:为提高超临界水氧化法处理剩余污泥的效果,采用响应面分析法,以CODCr去除率为响应值,对超临界水氧化法处理剩余污泥的反应温度、反应压力、停留时间和氧化剂过氧比等参数进行优化.结果表明:反应压力和反应温度是影响剩余污泥CODCr去除率的主要因素;反应压力、反应温度和停留时间存在交互作用;温度<410℃,停留时间<120 s时,压力对CODCr去除率的影响较大;最优化条件是反应温度为434℃,反应压力为29 MPa,停留时间为278 s和氧化剂过氧比为216%,此时,CODCr去除率试验值可达97.72%~98.32%.

关 键 词:剩余污泥  超临界  响应面  CODCr
收稿时间:2010/12/14 0:00:00
修稿时间:2011/3/22 0:00:00

Parameter Optimization of Excess Sludge Treatment by Supercritical Water Oxidation
FANG Lin,LIU Zhen-hua and TAO Hu-chun.Parameter Optimization of Excess Sludge Treatment by Supercritical Water Oxidation[J].Research of Environmental Sciences,2011,24(9):1029-1034.
Authors:FANG Lin  LIU Zhen-hua and TAO Hu-chun
Institution:FANG Lin1,LIU Zhen-hua2,TAO Hu-chun2 1.School of Chemistry and Chemical Engineering,Shenzhen University,Shenzhen 518060,China 2.Key Laboratory for Urban Habitat Environmental Science and Technology,School of Environment and Energy,Peking University Shenzhen Graduate School,Shenzhen 518055,China
Abstract:Optimization of temperature,pressure,retention time and oxidant dosage was studied in order to improve the efficiency of excess sludge treatment by supercritical water oxidation.Response surface methodology was applied with the removal ratio of chemical oxygen demand(CODCr) as the response value.It was shown that reaction temperature and reaction pressure were the key factors affecting the CODCr removal rate.Interaction was discovered among reaction pressure,temperature and retention time.The CODCr removal ...
Keywords:excess sludge  supercritical  response surface methodology  CODCr  
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