| 岩溶水硝酸盐污染原位修复试验 |
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| 引用本文： | 叶进霞,夏春英,卜鸿志.岩溶水硝酸盐污染原位修复试验[J].中国岩溶,2020,39(2):173-179. |
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| 作者姓名： | 叶进霞 夏春英 卜鸿志 |
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| 作者单位： | 1.山东省鲁南地质工程勘察院（山东省地勘局第二地质大队）,山东 兖州 272100 |
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| 基金项目： | 山东省自然资源厅《山东省岩溶发育区地质环境调查》（鲁地环（2018）06号）；山东省自然资源厅《硝酸盐污染含水层修复技术示范研究》（鲁勘字（2015）45号）；山东省地矿局《山东省优质地下水勘查模式》（KY201940） |
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| 摘 要： | 岩溶含水层的极不均一性特征使岩溶水溶质运移受构造、裂隙空间及其发育方向控制；因环境条件复杂，开展岩溶水污染原位修复技术难度较大，截止目前，国内尚未系统地开展岩溶含水层水污染原位修复研究工作。文章选择鲁中南山区典型岩溶发育及硝酸盐污染地段，施工组合钻孔建设修复试验工程，采用“乙醇+葡萄糖”液态碳源和“聚乙烯醇+淀粉颗粒”固态反应器分别进行岩溶水硝酸盐污染原位修复试验。结果表明:浓度500 mg?L－1、1 000 mg?L－1的“乙醇+葡萄糖”反硝化溶液对硝酸盐浓度的降解率分别为6.45 %和21.52 %；单位长度组成材料“聚乙烯醇3 kg+淀粉颗粒3 kg”、“聚乙烯醇2 kg+淀粉颗粒4 kg”的两种反硝化固态反应器对硝酸盐浓度的降解率分为33.91%和34.96%。试验证明在裂隙型岩溶地区采用孔组方案进行地下水污染原位修复技术可行、且能取得较显著效果。修复工程布设方式和试验成果对类似地区开展岩溶地下水污染原位修复具一定借鉴意义。
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| 关 键 词： | 岩溶水 硝酸盐污染 碳源 原位修复试验 |
An experimental stuty on in-situ nitrate-contaminated remediation of karst water |
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| YE Jinxi,XIA Chunying,BU Hongzhi.An experimental stuty on in-situ nitrate-contaminated remediation of karst water[J].Carsologica Sinica,2020,39(2):173-179. |
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| Authors: | YE Jinxi XIA Chunying BU Hongzhi |
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| Institution: | 1.Shandong Lunan Institute of Geological Engineering Survey (the Second Geological Brigade of SDGM)，Yanzhou，Shandong 272100，China2.Shandong Lunan Institute of Geological Engineering Survey (the Second Geological Brigade of SDGM)，Yanzhou，Shandong 272100，China/Key Laboratory of Karst Geology，SDGM，Yanzhou，Shandong 272100，China |
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| Abstract: | The extremely inhomogeneous nature of karst aquifers make the cyclic movement of karst water controlled by structure, fissure space and development direction. Due to the complex environmental conditions, it is difficult to carry out in-situ remediation of karst water pollution. Up to now, there is no report on this issue in China. This work chose the typical karst development and nitrate-contaminated areas in central and southern mountainous area of Shandong province to construct a pilot project by drilling holes. The in-situ nitrate-contaminated karst water remediation tests were carried out by using the approach of“ethanol + glucose” liquid carbon source and the “polyvinyl alcohol + starch granule” solid-state reactor. The results show that: (1) the degradation rates of nitrate concentration in the denitrification solution of “ethanol + glucose” with concentration of 500 mg?L-1 and 1,000 mg?L-1 are 6.45% and 21.52%, respectively. (2)When denitrifying solid-state reactor of “polyvinyl alcohol 3 kg + starch granule 3 kg” and “polyvinyl alcohol 2 kg + starch granule 4 kg” with unit length component materials was used to denitrify the nitrate concentration, the degradation rates are 33.91% and 34.96%, respectively. The test proves that it is feasible and effective to adopt the in-situ remediation technology of groundwater pollution by using the hole group scheme in karst areas, which can achieve remarkable results. The layout of the remediation project and the test results of this work have certain reference significance for the in-situ remediation of karst groundwater pollution in similar areas. |
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| Keywords: | karst water nitrate contamination carbon source in-situ remediation test |
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