生物接触氧化处理渗滤液有机物的动力学模型研究  

Biokenetic study on leachate treatment in a biological contact oxidation reactor

作　　者：刘亚丽[1,2] 张智[1] 段秀举 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [2]重庆市规划设计研究院,重庆401147 [3]重庆市建设委员会,重庆401114

出　　处：《环境污染与防治》2008年第10期1-4,共4页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.50178070);教育部博士点基金资助项目(No.20010611020)

摘　　要：以重庆黑石子垃圾填埋场渗滤液生物接触氧化工艺为依托,针对其处理效果的局限性,设计了强化预处理—生物接触氧化反应器,并进行生物接触氧化反应器试验及其有机物降解动力学模型研究,旨在优化运行参数,提高渗滤液处理效果。结果表明,改进后系统比原工艺处理效果好,COD、NH4+-N、TN平均去除率分别达到95.83%、97.60%、85.60%;出水水质得到大幅度提高,出水COD、NH4+-N、TN平均质量浓度分别为235、35、199mg/L。对生物接触氧化反应器内垃圾渗滤液有机物降解生化反应过程进行量化研究,得到微生物生长动力学模型为1/θc=0.9187q-0.0025;根据生物接触氧化反应器内基质消耗过程的物料平衡,得到生物接触氧化反应器处理垃圾渗滤液有机物生物降解的动力学模型为q=1.09S/(10230+S)。试验结果为生物接触氧化反应器的优化控制、设计与放大提供了参考依据。Based on the Heishizi landfill lechate treatment system, a biological contact oxidation reactor was designed as well as a pretreatment unit, and then experiments were conducted to study its biokenetie parameters. The purpose was to optimize the reactor system＇s operational conditions and to improve the treatment efficiency. The results showed that the removal efficency of the biological contact oxidation reactor can be improved greatly. The effluent quality was improved as COD, NH4^＋-N, TN were reduced to 235, 35, and 199 mg/L, and their respective removal rate reached 95.83%, 97.60% and 85.60%. The reactor＇s microbial growth dynamic model can be described as 1/θc=0. 918 7q-0. 002 5, and its ogannic degradation dynamic model as q=1. 09S/（10 230＋S）. The established kinetic parameters can then be used to optimize reactor design, control and operation.

关 键 词：渗滤液 生物接触氧化 有机物降解 动力学模型 

分 类 号：X703[环境科学与工程—环境工程] Q93[生物学—微生物学]