基于臭氧氧化的垃圾渗滤液深度处理工艺优化及中试验证  

Optimization and Pilot-Scale Demonstration of Advanced Treatment Process for Landfill Leachate Based on Ozonation

作　　者：杨培[1,2] 杨立臣 胡晓娜 祝金星 张亮 彭永臻[1,3] YANG Pei;YANG Lichen;HU Xiaona;ZHU Jinxing;ZHANG Liang;PENG Yongzhen(Harbin Institute of Technology,Harbin 100101,China;Beijing Environmental Engineering Technology Co,Ltd.,Beijing 150090,China;Beijing University of Technology,Beijing 100024,China)

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨100101 [2]北京环境工程技术有限公司,北京150090 [3]北京工业大学,北京100024

出　　处：《水处理技术》2024年第1期94-99,共6页Technology of Water Treatment

基　　金：高含固有机固废厌氧消化技术装备集成与工程示范(2018YFC1900906);北京市自然科学基金(8222040);国家重点研发计划(2021YFC3200605)。

摘　　要：针对实际垃圾渗滤液深度处理工艺流程优化开展中试实验。深度处理采用混凝沉淀+臭氧氧化+生物活性碳工艺,针对垃圾渗滤液传统工艺过程中的MBR出水、纳滤浓缩液的处理效果和运行成本进行研究。结果表明:以臭氧氧化为基础的深度处理工艺经过参数优化调整后,处理MBR出水时有机物、氨氮和总氮去除率分别为97.3%、71.76%和42.26%,处理纳滤浓缩液时有机物、氨氮和总氮去除率分别达到98.82%、74.41%和22.53%。其中,臭氧氧化对有机物处理能力最强,深度处理后COD浓度可直接满足排放限值,但是氨氮在后续的臭氧氧化环节和生物活性碳吸附环节存在较大波动。长期成本核算分析表明:处理MBR出水的运行成本为约92.10元/吨;处理纳滤浓缩液的运行成本为约166.00元/吨。最后根据中试研究成果实现了以臭氧氧化为基础的纳滤浓缩液处理工艺的工程转化,为该工艺市场应用奠定基础。In this study,pilot-scale advanced treatment processes treating actual landfill leachate were implemented and optimized.The treatment performance and operational cost of MBR effluent and nanofiltration concentrate of the landfill leachate treatment traditional process through the advanced treatment processes were studied,including coagulation sedimentation,ozone oxidation and biological activated carbon.The results showed that after parameter optimization and adjustment,the advanced treatment process based on ozonation can effectively remove 97.3%organic matter,71.76%ammonia nitrogen,and 42.26%total nitrogen of the membrane treatment effluent,and that can remove 98.82%organic matter,74.41%ammonia nitrogen,and 22.53%total nitrogen of nanofiltration concentrate.Ozone oxidation has a better treatment capacity for organic matter compared to ammonia.The COD concentration of MBR effluent after advanced treatment can directly meet the emission standards,but ammonia nitrogen concentration fluctuates obviously in the subsequent ozone oxidation and biologically activated carbon adsorption processes.The cost analysis of long-term operation suggested that the operational cost of treating MBR effluent is about 92.10 yuan/t.The operational cost of treating nanofiltration concentrate is around 166.00 yuan/t.Finally,according to above the results of the pilot-scale study,the engineering demonstration of nanofiltration concentrate treatment process based on ozone oxidation is realized,which provides a foundation for the application of an advanced treatment process.

关 键 词：垃圾渗滤液 深度处理 高级氧化 臭氧 

分 类 号：X703[环境科学与工程—环境工程]