倒置A/O工艺处理城市生活垃圾渗滤液过程中关键元素的物料流向  

Mass flow of key elements of inverted A/O technology in municipal solid waste leachate treatment process

作　　者：方政 冯守帅[1] 杨海麟[1] 黄兴 唐嘉鼎 吴泉钱 顾利星 陆东亮 王武[1] 

机构地区：[1]教育部工业微生物技术重点实验室,江南大学生物工程学院,无锡214122 [2]无锡市城市环境科技有限公司,无锡214122

出　　处：《环境工程学报》2017年第4期1987-1993,共7页Chinese Journal of Environmental Engineering

基　　金：江苏省2014年度普通高校研究生科研创新计划项目(SJZZ_0153);无锡市科技创新资金-社会发展科技支撑项目(CSE12N1506)

摘　　要：针对无锡市某生活垃圾渗滤液处理厂采用的倒置缺氧好氧(anoxic/oxic,A/O)工艺,分别构建了碳(以化学需氧量计,COD)、氮、磷等关键元素平衡系统。进而,通过对各生物处理单元进出水中碳、氮、磷等主要指标的跟踪监测,研究了系统中关键元素碳、氮和磷物料的流向。在此基础上分析了该垃圾渗滤液处理系统去除碳、氮、磷效率,并提出优化工艺参数策略。结果表明,生物处理单元对碳和氮的有效去除率分别为59.66%和53.60%,通过剩余污泥排出的磷为54.80%。实际工艺操作参数分析表明,可通过降低硝化液回流比和硝化罐溶解氧浓度,进一步提高系统中生物单元对碳、氮和磷的处理效率。Mass balance systems of key elements including carbon（ represented as the chemical oxygen demand,COD）,nitrogen,and phosphorus were built for the landfill leachate treatment plant of Wuxi,and these systems were constructed in accordance with the inverted anoxic/oxic（ A/O） zones. Then,the mass flow of key elements was studied by monitoring the main indicator parameters in each biological treatment unit. On the basis of the above results,the carbon,nitrogen,and phosphorus removal efficiencies were analyzed and optimization strategies for operational parameters were proposed. The result showed that the removal efficiencies for carbon and nitrogen in the biological treatment unit were 59. 66% and 53. 60%,respectively,while the removal efficiency for phosphorus in relation to the discharged sludge was 54. 80%. An analysis of the operational parameters revealed that the removal efficiencies for carbon,nitrogen,and phosphorus in the biological treatment units could be further enhanced in the future by reducing the recirculation ratio and decreasing the dissolved oxygen concentrations in the nitrifying tank.

关 键 词：垃圾渗滤液 倒置A/O工艺 物料平衡 处理效率 

分 类 号：X703[环境科学与工程—环境工程]