关键词: 封场, 填埋场, 资源化利用, 矿化垃圾, 理化特性

Abstract: In order to explore the resource utilization of mineralized waste from an old large landfill， the mineralized waste from a landfill in the late 1980s was taken as an example. The physicochemical properties of mineralized waste and leachate samples were analyzed by multi-point exploration， and settlement monitoring was carried out. The results showed that the landfill pile settlement tended to be stable， leachate could not meet the discharge requirements and must be discharged after treatment to meet the standards. The combustible ingredients of the mineralized waste was about 23%~31%， the humus was about 65%~75%， and its wet-based low calorific value met the minimum calorific value requirement of waste treatment by incineration. However， the ash content was high （about 62%）， and was not suitable for direct incineration treatment. It was recommended that the mineralized waste should be screened and classified according to combustible， humus， metal and brick stones for resource utilization.

Key words: closure of landfill, landfill, resource utilization, mineralized waste, physical and chemical properties