本文選題：垃圾填埋場 + 滲濾液�。� 參考：《浙江大學學報(工學版)》2016年06期

【摘要】：在西北黃土地區(qū)某填埋場進行鉆孔取樣和滲濾液水位測試,在室內對不同深度土樣的Cl-和COD質量濃度進行測試分析,獲得該填埋場運行19a后滲濾液在底部壓實及天然黃土層遷移情況.針對該填埋場,建立污染物遷移的二維有限元數(shù)值模型,通過實測數(shù)據(jù)的反演分析率定出Cl-和COD在場底土層中的遷移參數(shù),并對該填埋場繼續(xù)運行至50a時污染物的遷移進行預測.測試結果表明:該填埋場運行19a后COD和Cl-在壓實及天然黃土層中最大豎向遷移深度分別為3m和7m,水平向遷移距離有限,黃土對COD具有較強的吸附阻滯作用.模擬預測結果表明:在18.5m高滲濾液水頭作用下,填埋場運行50a時滲濾液中COD和Cl-的最大遷移深度分別達5m和15m.
[Abstract]:Borehole sampling and leachate water level test were carried out at a landfill site in the loess region of northwest China, and Cl- and COD mass concentrations of soil samples of different depths were measured and analyzed in laboratory. After 19 years of operation, the landfill leachate was compacted at the bottom and migrated in natural loess layer. For the landfill, a two-dimensional finite element numerical model for pollutant transport is established, and the migration parameters of Cl- and COD are determined by the inversion analysis rate of measured data. The transport of pollutants was predicted when the landfill continued to run for 50 years. The test results show that the maximum vertical migration depth of COD and Cl- in compacted and natural loess is 3m and 7m respectively after 19 years of operation, and the horizontal migration distance is limited. Loess has a strong adsorption block to COD. The simulation results show that under the action of 18.5m high leachate head, the maximum migration depth of COD and Cl- in leachate is 5 m and 15 m respectively when the landfill runs for 50 years.
【作者單位】： 浙江大學軟弱土與環(huán)境土工教育部重點實驗室;
【基金】：國家“863”高技術研究發(fā)展計劃資助項目(2012AA062601)
【分類號】：TU993;X144
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本文編號：1779459