华东地区非正规垃圾填埋场开挖筛分治理工程案例分析  

Engineering Case Study on Excavation Screening and Treatment Project of An Informal Landfill in East China

作　　者：刘超然 江文琛 张海静 王磊 黄晟 LIU Chaoran;JIANG Wenchen;ZHANG Haijing;WANG Lei;HUANG Sheng(Shanghai Municipal Engineering Design Institute(Group)Co.Ltd.,Shanghai 200092)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《环境卫生工程》2024年第1期14-20,共7页Environmental Sanitation Engineering

基　　金：上海市政工程设计研究总院(集团)有限公司启明星项目(K2021K110);上海市生态环境局项目(沪环科[2021]第25号)。

摘　　要：采用“堆体快速稳定化+清理挖掘+垃圾筛分+末端分类处置”结合“外运资源化处置”的总体技术路线开展垃圾处理、处置工作。快速稳定化设备运行两个月,甲烷气体浓度范围由0.01%~20.44%降至3%以下。降低筛分垃圾含水率可以提高筛分效率,含水率低于13%比含水率约30%效率提高14个百分点。采用次氯酸钠、聚合氯化铝、聚丙烯酰胺作为渗滤液处置药剂处理废水满足排放标准。腐殖土资源化过程中,40%腐殖土掺烧比可满足GB/T 5101—2003烧结普通砖MU10强度等级要求。工程处理垃圾堆体规模约为1.8×105m3,总投资约为1.35亿元。增加垃圾晾晒区域面积可以提供更多的低含水率垃圾,从而提高垃圾筛分效率和垃圾筛分量。由于垃圾堆体分布不均,快速稳定化时长需要大于理论计算时长。The overall technical routes of“landfill rapid stabilization+cleaning and excavation+waste screening+terminal classification and disposal”combined with“outbound transportation resource utilization”were adopt to carry out the waste treatment and disposal work.The rapid stabilization equipment was operated for two months,and the methane gas concentration ranged from 0.01%to 20.44%to below 3%.Reducing the moisture content of screened waste could improve the screening efficiency,and when the moisture content was lower than 13%,the efficiency was fourteen percentage points higher than the moisture content of about 30%.The leachate that was treated with NaClO,PAC and PAM met the discharge standards.In the process of resource conversion of humus soil,the blending ratio of 40%humus soil could meet the requirement of MU10 strength grade of GB/T 5101—2003 Fired Common Brick.The scale of the waste treatment project was about 180000 square meters and the total investment was about 135 million yuan.Increasing the air-drying area of waste could provide more low moisture content waste,thus improving the efficiency and volume of waste screening.Because of the uneven distribution of the waste,the rapid stabilization time needs to be longer than the theoretical calculation time.

关 键 词：非正规垃圾填埋场 快速稳定化 筛分效率 腐殖土资源化 

分 类 号：X705[环境科学与工程—环境工程]