【摘要】：本文在對(duì)蘇州工業(yè)園區(qū)某重金屬污染場(chǎng)地取樣分析,通過數(shù)據(jù)分析土壤的污染狀況,并對(duì)該場(chǎng)地展開健康風(fēng)險(xiǎn)評(píng)估,在針對(duì)具體重金屬鎳污染開展不同的修復(fù)實(shí)驗(yàn),通過實(shí)驗(yàn)結(jié)果再結(jié)合土壤、時(shí)間、成本等因素得出一個(gè)可行的修復(fù)方案。主要研究內(nèi)容如下:(1)對(duì)該重金屬污染場(chǎng)地結(jié)合各方面的背景狀況進(jìn)行調(diào)查,結(jié)從該項(xiàng)目的原有生產(chǎn)工藝、所使用的原輔材料和先前做的土壤和地下水場(chǎng)地環(huán)境評(píng)估初步斷定該場(chǎng)地的污染物為重金屬鎳,根據(jù)原企業(yè)的生產(chǎn)工藝和生產(chǎn)車間布局,確定該場(chǎng)地潛在的重金屬鎳污染重點(diǎn)關(guān)注區(qū)域。(2)對(duì)潛在的重金屬鎳污染區(qū)域與對(duì)照區(qū)域等分別采樣,采用ICP-OES測(cè)定其重金屬鎳的含量,并測(cè)定p H值。經(jīng)過對(duì)實(shí)驗(yàn)結(jié)果分析,在八個(gè)樣品中有三個(gè)重金屬鎳含量均超過了《建設(shè)用地土壤污染風(fēng)險(xiǎn)篩選指導(dǎo)值》(二次征求意見稿)中工業(yè)類用地的風(fēng)險(xiǎn)篩選指導(dǎo)值(198mg/Kg),其中一個(gè)點(diǎn)位的鎳含量達(dá)到600mg/Kg。(3)選擇重金屬鎳作為關(guān)注污染物,進(jìn)一步評(píng)估其健康風(fēng)險(xiǎn),評(píng)估方法參考《污染場(chǎng)地風(fēng)險(xiǎn)評(píng)估技術(shù)導(dǎo)則》。以檢測(cè)結(jié)果的最大值計(jì)算該場(chǎng)地的風(fēng)險(xiǎn),通過計(jì)算得出該場(chǎng)地土壤中鎳的致癌風(fēng)險(xiǎn)和危害商分別高于標(biāo)準(zhǔn)值,因此需要對(duì)該場(chǎng)地土壤作進(jìn)一步的修復(fù)治理。(4)嘗試通過淋洗修復(fù)技術(shù)、固化穩(wěn)定化修復(fù)技術(shù)和植物修復(fù)技術(shù)三種不同方法對(duì)目標(biāo)土壤進(jìn)行修復(fù),通過不同的實(shí)驗(yàn)組合得出最佳實(shí)驗(yàn)方案,最后通過實(shí)驗(yàn)結(jié)果計(jì)算出三種不同的修復(fù)方案的修復(fù)結(jié)果。(5)通過對(duì)實(shí)驗(yàn)結(jié)果的分析,可以看出上述三種實(shí)驗(yàn)方法在對(duì)于重金屬鎳污染的土壤都能起到較理想的效果。最后結(jié)合成本、時(shí)間等因素,參考《污染場(chǎng)地修復(fù)技術(shù)目錄》,確定固化穩(wěn)定化修復(fù)技術(shù)比較適合該類型土壤的修復(fù)。
[Abstract]:In this paper, the heavy metal pollution site of Suzhou Industrial Park is sampled and analyzed, the soil pollution status is analyzed by data, and the health risk assessment of the site is carried out, and different remediation experiments are carried out aiming at the specific heavy metal nickel pollution. A feasible remediation scheme was obtained by combining the experimental results with soil, time, cost and other factors. The main research contents are as follows: (1) the background condition of the heavy metal contaminated site combined with various aspects is investigated, and the original production process of the project is concluded. The environmental assessment of the raw and auxiliary materials used and the previously done soil and groundwater sites preliminarily concluded that the pollutants in the site were heavy metal nickel, according to the production process and workshop layout of the original enterprise, (2) the potential heavy metal nickel pollution area and control area were sampled, and the nickel content and pH value were determined by ICP-OES. After analyzing the experimental results, Three of the eight samples contain more heavy metal nickel than the Industrial Land risk screening guideline (198mg/Kg) in the soil pollution risk screening guidelines for Construction Land (second draft), one of which has nickel content of up to one point. By 600 mg / Kg. (3) choose nickel as a concern pollutant, Further assessment of their health risks, assessment methods refer to the pollution site risk assessment technical guidelines. The maximum value of the test results is used to calculate the risk of the site. The results show that the carcinogenic risk and hazard quotient of nickel in the soil of the site are higher than the standard value respectively. Therefore, it is necessary to make further remediation of the site soil. (4) try to repair the target soil by three different methods: elution, stabilization and phytoremediation. Through different experimental combinations, the best experimental scheme is obtained. Finally, the results of three different restoration schemes are calculated through the experimental results. (5) through the analysis of the experimental results, It can be seen that the above three experimental methods can play an ideal effect on the heavy metal nickel contaminated soil. Finally, with the consideration of cost, time and other factors, and referring to the catalogue of remediation techniques for contaminated sites, it is determined that the solidified and stabilized remediation technology is more suitable for the remediation of this type of soil.
【學(xué)位授予單位】：蘇州科技學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X820.4;X505

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