封场填埋场垃圾与渗沥液变化特征分析

Characteristics of Wastes and Leachate Changes in Closed Landfill Site

分析了我国南方某填埋场封场后垃圾的含水率、有机物含量以及渗沥液中污染物浓度等。结果表明,在封场良好的填埋场内垃圾的平均含水率降到30%以下,有机物平均含量降到9.62%;渗沥液中污染物浓度在封场后迅速下降,8a后,COD低于100mg/L,BOD5低于25mg/L,氨氮低于65mg/L。

Water content, organic compounds and pollutants in leaehate of waste in a closed landfill site in the south of China were analyzed. Results show that water content in wastes decline to lower than 30% ; organic compounds content fall to lower than 9. 62%. Pollutant in leaehate reduced rapidly. After eight years, COD was lower than 100mg/L, BOD5 was lower than 25 mg/L and NH3 - N was lower than 65 mg/L in the landfill site that good closure engineering were implemented.