本文選題：垃圾填埋場(chǎng) + 滲濾液��； 參考：《浙江大學(xué)學(xué)報(bào)(工學(xué)版)》2016年06期

【摘要】：在西北黃土地區(qū)某填埋場(chǎng)進(jìn)行鉆孔取樣和滲濾液水位測(cè)試,在室內(nèi)對(duì)不同深度土樣的Cl-和COD質(zhì)量濃度進(jìn)行測(cè)試分析,獲得該填埋場(chǎng)運(yùn)行19a后滲濾液在底部壓實(shí)及天然黃土層遷移情況.針對(duì)該填埋場(chǎng),建立污染物遷移的二維有限元數(shù)值模型,通過(guò)實(shí)測(cè)數(shù)據(jù)的反演分析率定出Cl-和COD在場(chǎng)底土層中的遷移參數(shù),并對(duì)該填埋場(chǎng)繼續(xù)運(yùn)行至50a時(shí)污染物的遷移進(jìn)行預(yù)測(cè).測(cè)試結(jié)果表明:該填埋場(chǎng)運(yùn)行19a后COD和Cl-在壓實(shí)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(duì)COD具有較強(qiáng)的吸附阻滯作用.模擬預(yù)測(cè)結(jié)果表明:在18.5m高滲濾液水頭作用下,填埋場(chǎng)運(yùn)行50a時(shí)滲濾液中COD和Cl-的最大遷移深度分別達(dá)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(xué)軟弱土與環(huán)境土工教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家“863”高技術(shù)研究發(fā)展計(jì)劃資助項(xiàng)目(2012AA062601)
【分類(lèi)號(hào)】：TU993;X144
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本文編號(hào)：1779459