日覆盖层对厌氧生物反应器填埋场中垃圾降解的影响.docVIP

日覆盖层对厌氧生物反应器填埋场中的何正坤,温春宇,丁琳洁董 军* (吉林大学环境与资源学院,地下水资源与环境教育部重点实验室,长春 130021) 摘要:3组模拟厌氧生物反应器填埋场,以研究日覆盖层对垃圾降解的影响.R1不设日覆盖层,R2和R3日覆盖层分别为脱水污泥+垃圾焚烧废水、脱水污泥+天然沸石.结果表明,2种日覆盖层均能在一定程度上优化反应器的内环境,促进垃圾的降解,R1、R2和R3固相垃圾和渗滤液有机碳总量m(OC/g)和氮总量m(N/g)分别下降了62.5%、77.0%、71.6%, 52.6%、59.0%、62.4%.脱水污泥+垃圾焚烧飞灰能更高效地促进固相垃圾和渗滤液中有机物的降解,而脱水污泥+天然沸石在加速垃圾中氮组分的降解转化及控制渗滤液中氨氮累积方面更具优势.实验结束时,R1、R2和R3中固相垃圾VS、BDM、TOCW、TNW降解转化率分别为63.7%、72.4%、70.9%, 58.7%、85.4%、79.6%, 60.4%、76.3%、70.4%, 53.1%、60.6%、67.9%. R1、R2和R3渗滤液CODCr、BOD5、TOC、TN、NH4+–N浓度分别为59458.7mg/L、57963.5mg/L、55899.4mg/L, 34560mg/L、30470mg/L、31870mg/L, 23249mg/L、20258mg/L、22242mg/L, 3261.0mg/L、3372.0mg/L、2521.0mg/L, 1514.6mg/L、1903.8mg/L、1290.3mg/L. 关键词：厌氧生物反应器填埋场A 文章编号： Effect of Daily Covers Compositions on Degradation of MSW in Anaerobic Bioreactor Landfills. HE Zheng-kun, DONG Jun*,WEN Chen-yu, DING Lin-jie (College of Environment and Resources, Jilin University, Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Changchun 130021) Abstract: Three sets of simulated anaerobic bioreactor landfills named R1,R2 and R3 were designed to study the effect of daily covers on nitrogen transformation and remove in anaerobic bioreactor landfills. R1 was control, the daily covers of R2 and R3 were “Dewatered Sludge with MSWI Fly Ash” and “Dewatered Sludge with Natural Zeolites”, respectively. The results showed that, the daily cover of “Dewatered Sludge with Natural Zeolites” could accelerate nitrogen transformation and remove of solid waste and leachate in anaerobic bioreactor landfill. And “Dewatered Sludge with Natural Zeolites” could maintain the optimum moisture content in solid waste. Although “Dewatered Sludge with MSWI Fly Ash” could reduce the accumulation of organic acids, it played a negative role in transformation of nitrogen. At the end of the experiment, the content ratio of total nitrogen of solid waste in R1,R2 and R3 decreased by 0.84,0.87 and 0.89,respectively. And the concentration of total nitrogen, ammonia nitr