| 底泥煤渣帽封与药剂投加联用原位稳定化技术对上覆水体及底泥pH-Eh-COD的影响 |
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| 引用本文： | 章萍,钱光人,王天琪,周文斌.底泥煤渣帽封与药剂投加联用原位稳定化技术对上覆水体及底泥pH-Eh-COD的影响[J].环境工程学报,2013,7(12):4990-4994. |
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| 作者姓名： | 章萍 钱光人 王天琪 周文斌 |
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| 作者单位： | 1. 南昌大学环境与化学工程学院教育部鄱阳湖环境与资源利用教育部重点实验室, 南昌 330047;2. 上海大学环境与化学工程学院, 上海 200072;2. 上海大学环境与化学工程学院, 上海 200072;1. 南昌大学环境与化学工程学院教育部鄱阳湖环境与资源利用教育部重点实验室, 南昌 330047;1. 南昌大学环境与化学工程学院教育部鄱阳湖环境与资源利用教育部重点实验室, 南昌 330047 |
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| 基金项目： | 中国博士后基金第五十一批面上资助项目（2012M511456）；南昌大学鄱阳湖环境与资源利用教育部重点实验室开放基金（13005869）；南昌大学测试基金（2012035） |
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| 摘 要： | 将底泥有机物原地稳定化处理技术中药剂投加法和帽封法结合，研究以煤渣为帽封材料，苏州河底泥中分别投加零价铁（Fe0）及硝酸钙的实验里各体系上覆水体及底泥的pH、氧化还原电位（Eh）、有机含量在60 d的变化情况。结果表明，煤渣帽封下，底泥中投加Fe0或硝酸钙后上覆水体pH均在8左右，Eh呈下降趋势，投加Fe0后对上覆水体COD的影响较硝酸钙小，但均不会对上覆水体水质产生持久、较大的影响。从底泥有机质的去除率上来看，Fe0-煤渣帽封体系在反应周期里有机质的去除率约55%，而硝酸钙-煤渣帽封体系底泥有机质的去除率在27%左右。以Fe0-煤渣帽封材料复合体系运用在底泥原地稳定化帽封技术中降解有机物更为合适。
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| 关 键 词： | 底泥原地稳定化 帽封 药剂投加 上覆水体 底泥 |
Effects of chemical agents capped with cinder on overlying water and sediment during in-situ sediment treatment for organic pollutants |
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| Zhang Ping,Qian Guangren,Wang Tianqi and Zhou Wenbin.Effects of chemical agents capped with cinder on overlying water and sediment during in-situ sediment treatment for organic pollutants[J].Techniques and Equipment for Environmental Pollution Control,2013,7(12):4990-4994. |
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| Authors: | Zhang Ping Qian Guangren Wang Tianqi and Zhou Wenbin |
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| Institution: | 1. Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Environmental and Chemical Engineering, Nanchang University, Nanchang 330047, China;2. College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200072, China;2. College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200072, China;1. Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Environmental and Chemical Engineering, Nanchang University, Nanchang 330047, China;1. Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Environmental and Chemical Engineering, Nanchang University, Nanchang 330047, China |
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| Abstract: | In the study on in-situ sediment treatment of organic pollutants from Suzhou Creck, chemical agents and cinder capping were applied. Combined with cinder capping, zero valent iron (Fe0) and calcium nitrate were used into the sediment of Suzhou Creck for 60 days for in-situ sediment treatment for organic pollutants. The effects of chemical agents with the capping material on the overlying water and sediment were investigated, including pH, Eh and COD factors. The results showed that with the add of Fe0 or calcium nitrate, the pH value raised to 8, while Eh value descended. Meanwhile, the effect on COD in overlying water by adding Fe0 was smaller than that by adding calcium nitrate, however, this effect on overlying water quality was not permanent or seriouse. According to the removal rate of COD from sediment, the removal rate in Fe0-cinder system was about 55%, while the removal rate of calcium nitrate -cinder system was around 27%. In this case, the system of Fe0 capped with cinder was more suitable to degrade organic pollutants in the in-situ sediment treatment. |
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| Keywords: | in-situ sediment treatment capping chemical addition overlying water sediment |
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