| 底泥原地稳定化过程中药剂对上覆水体的影响 |
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| 引用本文： | 邹联沛,章萍,钱光人. 底泥原地稳定化过程中药剂对上覆水体的影响[J]. 水科学进展, 2008, 19(4): 494-499 |
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| 作者姓名： | 邹联沛 章萍 钱光人 |
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| 作者单位： | 上海大学环境与化学工程学院,上海,200072;上海大学环境与化学工程学院,上海,200072;上海大学环境与化学工程学院,上海,200072 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，上海市科学技术委员会重大攻关资助项目 |
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| 摘 要： | 采用底泥原地稳定化处理技术中的药剂投加方法,对苏州河底泥中投加零价铁(Fe0)、硝酸钙的上覆水体进行为期80 d研究比较.结果表明:投加Fe0后上覆水体的溶解氧(DO)被迅速消耗,体系易形成厌氧环境,而硝酸钙则减缓了上覆水体DO的消耗;投加零价铁或硝酸钙后都会使上覆水体的pH升高,Eh下降;投加Fe0后对上覆水体CODCr或TOC的影响较硝酸钙小;此外,两者上覆水体DO、pH和Eh与CODCr和TOC之间均具有一定的相关性.
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| 关 键 词： | 底泥原地稳定化 零价铁 硝酸钙 有机污染物 上覆水体 |
| 收稿时间： | 2007-08-18 |
Effects of chemical agents on the overlying water during in-situ sediment treatment |
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| ZOU Lian-pei,ZHANG Ping,QIAN Guang-ren. Effects of chemical agents on the overlying water during in-situ sediment treatment[J]. Advances in Water Science, 2008, 19(4): 494-499 |
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| Authors: | ZOU Lian-pei ZHANG Ping QIAN Guang-ren |
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| Affiliation: | College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200072, China |
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| Abstract: | The zero valent iron(Fe0) or calcium nitrate was added into the sediment of Suzhou creck for 80 days in the anaer obic environment for in-situ sediment treatment.The effects of chemical agents on the overlying water were studied by DO,pH,Eh,CODCr and TOC measurements.The results show that DO is depleted dramatically by Fe0 added,resulting in anaero bic environment easily,whereas the consumption of DO is delayed by the added calcium nitrate.And Fe0 or calcium nitrate added will raise pH value and descend Eh value.Meanwhile,the effect on CODCr or TOC in overlying water by Fe0 added is lower than that of the calcium nitrate added.In addition,there are certain relations among DO,pH and Eh or between CODCr and TOC in overlying water as Fe0 or calcium nitrate is added respectively. |
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