【摘要】：本論文以土柱實(shí)驗(yàn)為主,結(jié)合理論分析,研究垃圾滲濾液在土壤及地下水中的遷移轉(zhuǎn)化規(guī)律,并應(yīng)用Hydrus-1d軟件進(jìn)行仿真模擬,實(shí)驗(yàn)過程中的用土均取自郊外的天然土樣,并測(cè)定所選土樣的基本物理性質(zhì),如容重、含水率及粒徑組成等。首先進(jìn)行氯離子的示蹤實(shí)驗(yàn),以測(cè)定一維水動(dòng)力學(xué)彌散系數(shù),示蹤實(shí)驗(yàn)結(jié)束后對(duì)用提前制備的垃圾滲濾液進(jìn)行淋濾實(shí)驗(yàn),對(duì)淋出液中的主要污染組分中的有機(jī)污染物(CODcr)、氨氮、pH值等進(jìn)行了測(cè)定,并應(yīng)用Hydrus-1d軟件模擬垃圾滲濾液在土柱中的運(yùn)移過程,將Hydrus-1d軟件所模擬的結(jié)果與實(shí)驗(yàn)室所測(cè)的數(shù)據(jù)進(jìn)行對(duì)比分析發(fā)現(xiàn),Hydrus-1d軟件的模擬結(jié)果在趨勢(shì)上與實(shí)驗(yàn)室實(shí)測(cè)值有良好的一致性,不考慮垃圾滲濾液在土柱中的微生物作用,Hydrus-1d在理論上可以很好的擬合垃圾滲濾液在土壤中的運(yùn)移規(guī)律;此外,通過對(duì)進(jìn)水壓力水頭和彌散系數(shù)進(jìn)行敏感性分析,發(fā)現(xiàn)改變進(jìn)水壓力水頭對(duì)土柱底部淋出液的濃度影響要大于垂向彌散系數(shù)對(duì)土柱底部淋出液的濃度影響,進(jìn)水壓力和垂向彌散度越小,土壤對(duì)溶質(zhì)的吸附強(qiáng)度越弱,所得曲線越陡。本論文的研究為垃圾場(chǎng)土壤的污染控制和修復(fù)、地下水資源污染控制、管理和評(píng)價(jià)以及垃圾滲濾液處理工藝的合理選擇提供理論依據(jù)和技術(shù)支持。
[Abstract]:Based on the soil column experiment and theoretical analysis, this paper studies the migration and transformation of landfill leachate in soil and groundwater, and simulates it by using Hydrus-1d software. The soil used in the experiment is taken from the natural soil samples from the countryside. The basic physical properties, such as bulk density, moisture content and particle size composition, were determined. First, the tracer experiment of chloride ion was carried out to determine the dispersion coefficient of one-dimensional hydrodynamics. After the tracer experiment, the leaching experiment was carried out with the landfill leachate prepared in advance, and the organic pollutant (CODcr), in the main pollutants in the leachate was tested. The ammonia nitrogen and pH value were measured, and the transport process of landfill leachate in soil column was simulated by Hydrus-1d software. The results of simulation by Hydrus-1d software were compared with the data measured in laboratory. The simulation results of Hydrus-1d software are in good agreement with the measured values in the laboratory. The microorganism function of landfill leachate in soil column is not considered, and Hydrus-1d can fit the migration law of landfill leachate in soil in theory. In addition, through the sensitivity analysis of influent pressure head and dispersion coefficient, it is found that the influence of changing influent pressure head on the concentration of leachate at the bottom of soil column is greater than that of vertical dispersion coefficient on the concentration of leachate at the bottom of soil column. The smaller the influent pressure and the vertical dispersion, the weaker the adsorption intensity of solute and the steeper the curve. The research in this paper provides theoretical basis and technical support for the control and restoration of soil pollution, the pollution control, management and evaluation of groundwater resources and the reasonable selection of landfill leachate treatment process.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X53;X703;X523

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王杰;聶宏林;潘濤;;地下水污染物遷移機(jī)制及彌散參數(shù)初步估計(jì)[J];科技視界;2014年24期

2 孫洪偉;郭英;彭永臻;;垃圾填埋場(chǎng)滲濾液短程生物脫氮的長期穩(wěn)定性實(shí)驗(yàn)研究[J];環(huán)境科學(xué);2014年01期

3 楊鳳娥;;容量法與分光光度法測(cè)定水中的化學(xué)需氧量方法比對(duì)[J];環(huán)境科學(xué)導(dǎo)刊;2013年S1期

4 劉增超;董軍;何連生;席北斗;孟睿;李一葳;嚴(yán)剛剛;;基于過程模擬的地下水污染風(fēng)險(xiǎn)評(píng)價(jià)方法研究[J];中國環(huán)境科學(xué);2013年06期

5 劉增超;何連生;董軍;孟睿;宋博宇;席北斗;;簡易垃圾填埋場(chǎng)地下水污染風(fēng)險(xiǎn)評(píng)價(jià)[J];環(huán)境科學(xué)研究;2012年07期

6 海龍;梁冰;隋淑梅;;垃圾滲濾液中氨氮在表土層中遷移擴(kuò)散規(guī)律研究[J];水資源與水工程學(xué)報(bào);2012年02期

7 王瑩瑩;秦俠;;垃圾滲濾液運(yùn)移過程中相關(guān)模型的研究及應(yīng)用現(xiàn)狀[J];安全與環(huán)境學(xué)報(bào);2012年01期

8 王曉軍;;垃圾滲濾液在不同介質(zhì)中遷移轉(zhuǎn)化規(guī)律[J];山西建筑;2011年29期

9 宋瑩;魏薇;楊靜;;硝酸銀滴定法測(cè)定水中氯化物不確定度的評(píng)定[J];現(xiàn)代測(cè)量與實(shí)驗(yàn)室管理;2011年05期

10 李亮;史海濱;赤江剛夫;張義強(qiáng);劉宏云;;內(nèi)蒙古河套灌區(qū)耕地與荒地間水鹽補(bǔ)排規(guī)律的研究[J];灌溉排水學(xué)報(bào);2010年05期

，

本文編號(hào)：2343159