渗滤液回灌型填埋场的水质变化规律  

Water quality variability of leachate circulation landfill

作　　者：刘宏远[1] 沈东升[2] 朱荫湄[2] 

机构地区：[1]浙江工业大学建工学院,浙江杭州310032 [2]浙江大学环境资源学院,浙江杭州310027

出　　处：《浙江工业大学学报》2005年第1期1-3,共3页Journal of Zhejiang University of Technology

基　　金：国家自然科学基金(59808012);浙江省中青年教师资助基金(10600016)

摘　　要：传统的卫生填埋场垃圾降解速度缓慢,渗滤液有机物浓度高,而且水质波动大,给处理工艺的设计与运行带来极大的不便.采用渗滤液回灌的生物反应器填埋场的研究表明,回灌调节了垃圾堆体的含水率,改善了微生物的生存环境,强化了微生物的降解作用.试验临近结束时,渗滤液直接循环的生物反应器填埋场(R2)的渗滤液CODCr已降至1500mg/L以下,远低于传统的卫生填埋场(R1)的30000mg/L,而且R2系统在实验过程中,不对外排放渗滤液,基本不会污染周围环境.但是R2系统的酸积累以及TN和TP浓度过高等问题也是由于渗滤液的直接回灌造成,如何解决这些问题将是今后的一个研究方向.The low refuse degradation velocity, and high organic matter and variation water quality of the leachate which was inconvenient for design and management of the leachate treatment technics, was big problems in the tradition landfill. The result showed the leachate circulation regulated the water content in refuse, improved the microorganism circumstance and strengthened the degradation of microorganism. The concentration of CODcr of the leachate was below to 1 500mg/L in R2 system, far below 30 000 mg/L in R1 system, when the trial was over. The problems of the acid accumulation and the high concentration of TN and TP by virtue of leachate circulation, should be resolved in next research.

关 键 词：渗滤液回灌 卫生填埋场 生物反应器填埋场 垃圾堆体 处理工艺 CODC 有机物浓度 TP 微生物 调节 

分 类 号：X705[环境科学与工程—环境工程] X703