| 水淬渣人工湿地强化除磷作用研究 |
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| 引用本文： | 李海波,杨瑞崧,李晓东,孙铁珩.水淬渣人工湿地强化除磷作用研究[J].环境科学,2009,30(8):2302-2308. |
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| 作者姓名： | 李海波 杨瑞崧 李晓东 孙铁珩 |
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| 作者单位： | 1. 沈阳大学污染环境生态修复与资源化技术教育部重点实验室,沈阳,110044
2. 辽宁省环境科学研究院,沈阳,110031 |
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| 基金项目： | 辽宁省陆地生态过程与区域生态安全重点实验室开放基金项目(KF2007-2);;国家高技术研究发展计划(863)项目(2007AA061101) |
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| 摘 要： | 研究了水淬渣的磷吸附-解吸效果,构建了以水淬渣为主要基质的模拟垂直流人工湿地系统,分析了水力停留时间(HRT)和污染负荷变化对污水中磷去除的影响,探讨了湿地上行、下行流单元各层基质的除磷贡献.结果表明,水淬渣基质的磷饱和吸附量为3 333 mg.kg-1,其水溶性钙含量为0.084%,pH值为7.54,适合作为湿地除磷基质.HRT与磷除去率呈正相关,当HRT从1 d缩短为0.5 d时,TP去除率降低5.9%~4.7%,当HRT从2 d缩短为1 d时,TP去除率降低2.4%~4.7%,HRT为1 d条件下,水淬渣湿地的磷去除率>85%,说明无限延长HRT无益于强化除磷,适宜的HRT为1 d.在进水浓度稳定的条件下,进水污染负荷与磷去除率呈负相关,当污染负荷范围在12.2~36.8 g.(m2.d)-1时,水淬渣湿地的磷除去率可维持在85%,当污染负荷达到48.9 g.(m2.d)-1后,水淬渣湿地的磷除去率下降至65%,当污染负荷<36.8 g.(m2.d)-1时,水淬渣湿地的磷去除率>82%,说明高污染负荷可抑制基质表面及孔隙中Ca、Al等吸附磷的活跃位点,适宜的进水污染负荷为24.5~36.8g.(m2.d...
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| 关 键 词： | 湿地基质 除磷 水淬渣 水力停留时间 污染负荷 |
| 收稿时间： | 2008/9/12 0:00:00 |
| 修稿时间： | 2008/11/15 0:00:00 |
Effects of Enhanced Dephosphorization in the Constructed Wetland Using Water-Granulated Slag as Matrix |
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| LI Hai-bo,YANG Rui-song,LI Xiao-dong and SUN Tie-heng.Effects of Enhanced Dephosphorization in the Constructed Wetland Using Water-Granulated Slag as Matrix[J].Chinese Journal of Environmental Science,2009,30(8):2302-2308. |
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| Authors: | LI Hai-bo YANG Rui-song LI Xiao-dong and SUN Tie-heng |
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| Institution: | 1.Key Laboratory of Eco-Remediation and Resource Reuse;Ministry of Education;Shenyang University;Shenyang 100044;China;2.Liaoning Academy of Environmental Sciences;Shenyang 110031;China |
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| Abstract: | The phosphorus adsorption and desorption effects of water-granulated slag(WGS) were studied.A simulated vertical flow constructed wetland system was constituted using WGS as the main matrix.The influences of hydraulic residence time(HRT) and pollution load on phosphorus removal were investigated.The contributions of phosphorus removal of different horizon layers in up-flow and downflow matrixes were studied.The results showed that WGS was a kind of adaptive desorption material for wetland due to its high sa... |
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| Keywords: | wetland matrix phosphorus removal water-granulated slag(WGS) hydraulic residence time(HRT) pollution load |
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