模拟垃圾填埋场稳定化过程研究

Stabilization Process in the Refuse Lysimeter

采用垃圾填埋堆体模拟装置,对杭州市城市生活垃圾在1998年2月至1998年10月期间稳定化过程中的垃圾渗滤液水质指标变化、堆体内部温度变化、垃圾减量化、沉降高度和产气量进行了研究。装入模拟装置的221kg生活垃圾经8个月的降解后,垃圾减量化显著,总量降至127kg,其中有机组分由94.81kg(42.9％)降至20.93kg(16.5％),无机组分由72.71kg(32.9％)降至53.65kg(42.2％);垃圾的Cu、Zn、Pb、总N和总P含量也都有不同程度的下降;垃圾渗滤液的COD_(Cr)和BOD_5浓度则下降很快,8个月降解后分别降至372mg/L和89.1mg/L。

Leachate quality, temperature in the refuse lysimeter, mass reduction, cumulative settlement and landfill gases in a lysimeter in Hangzhou have been studied for a period of 8 months from February 1998 to October 1998. Placed 221kg of fresh domestic refuse in the lysimeter. After 8 months degradation, the weight of organic and inorganic components were found to decrease from 94.81kg (42.9%) to 20.93kg (16.5%), and 72.71kg (32.9%) to 53.65kg (42.2%) respectively, and total weight to 127.0kg. The contents of Cu, Zn, Pb, total N, total P in refuse also decreased after degradation. The monitoring results showed that CODCr and BOD5 concentrations in leachate attenuated quite fast, and decreased to 372mg/L and 89.1mg/L respectively after degradation.