| 受污染底泥固化/稳定化处理及营养物质释放特征研究 |
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| 引用本文： | 邝臣坤,张太平.受污染底泥固化/稳定化处理及营养物质释放特征研究[J].生态环境,2011(10):1530-1535. |
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| 作者姓名： | 邝臣坤 张太平 |
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| 作者单位： | 华南理工大学环境科学与工程学院;华南理工大学工业聚集区污染控制与生态修复教育部重点实验室; |
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| 基金项目： | 国家水体污染控制与治理科技重大专项(2008ZX07211-006); 华南理工大学亚热带建筑科学国家重点实验室2010年度开放课题(2010KB22) |
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| 摘 要： | 以广州市车陂涌受污染底泥为研究对象,通过掺杂不同比例的粉煤灰、水泥、石灰和膨润土,对底泥进行固化/稳定化处理试验,探讨底泥经处理后的产物中碳素和营养盐的释放特征。结果表明：实验条件下底泥固化/稳定化处理基本不会减少碳的释放,但会改变其释放形态,未经处理的底泥释放的TOC被迅速矿化,而底泥固化/稳定化处理产物释放的TOC稳定存在。在试验期内,底泥固化/稳定化处理对产物的硝态氮释放无明显影响;固化/稳定化处理能有效促进氮磷的稳定,固化体氨氮和磷酸盐的释放量明显降低,分别比未经处理的底泥减少了67.4%和76.4%以上。不同来源的粉煤灰由于成分不同,在底泥固化/稳定化处理中的作用存在差异,掺杂珠江电厂的粉煤灰Z对氨氮和磷酸盐的稳定化效果优于恒运电厂的粉煤灰H。固化/稳定化技术为疏浚底泥提供了一种安全的处理方法,为粉煤灰提供了一种有效的资源化途径。
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| 关 键 词： | 受污染底泥 粉煤灰 固化/稳定化 营养盐释放 粉煤灰资源化 |
The nutrient releasing characteristics of the solidification/stabilization treatment of the polluted sediments from urban river |
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| KUANG Chenkun,ZHANG Taiping, .College of Environmental Science , Engineering,South China University of Technology,Guangzhou ,China.The nutrient releasing characteristics of the solidification/stabilization treatment of the polluted sediments from urban river[J].Ecology and Environmnet,2011(10):1530-1535. |
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| Authors: | KUANG Chenkun ZHANG Taiping College of Environmental Science Engineering South China University of Technology Guangzhou China |
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| Institution: | KUANG Chenkun1,ZHANG Taiping1,2 1.College of Environmental Science and Engineering,South China University of Technology,Guangzhou 510006,China,2.The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters,Ministry of Education |
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| Abstract: | In order to explore the feasibility of dredged sediment and fly ash reutilization,ordinary cement,lime,bentonite were used along with fly ash to solidify/stabilize the polluted sediment of Chebei river in Guangzhou,China.Releasing behaviors of carbon and nutrients of solidification/stabilization(S/S) treatments were investigated.The results showed that S/S could not reduce the releasing quantities of carbon in S/S products,but change the releasing forms.TOC released from untreated sediment was quickly miner... |
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| Keywords: | polluted sediment fly ash solidification/stabilization nutrients releasing utilization of fly ash as resource |
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