多级土壤渗滤系统处理滇池入湖河水的研究

被引：13

作者：

魏才倢 ^{[1
]}

吴为中 ^{[1
]}

陶淑 ^{[1
,2
]}

李德生 ^{[2
]}

机构：

[1] 北京大学环境科学与工程学院

[2] 兰州交通大学环境与市政工程学院

来源：

中国给水排水 | 2010年 / 26卷 / 09期

关键词：

多级土壤渗滤系统; 受污染河水; 曝气; 混合模块层; 渗滤层;

D O I：

10.19853/j.zgjsps.1000-4602.2010.09.028

中图分类号：

X703 [废水的处理与利用];

学科分类号：

083002 ;

摘要：

采用多级土壤渗滤(MSL)模拟系统处理滇池入湖河水,以陶结、木炭、石灰石和铁屑作为混合模块层滤料,以沸石作为渗滤层滤料,考察了曝气和水力负荷等参数对系统除污效能的影响。结果表明,MSL系统对受污染河水具有良好的净化效果,尤其是在非曝气条件下,对COD、NH4+-N、TN和TP的平均去除率分别在50%、90%、80%和70%以上,且出水NH4+-N和TP浓度可达到《地表水环境质量标准》(GB3838—2002)的Ⅲ类标准。曝气与否对NH4+-N和TP去除效果的影响较小,但曝气可明显提高系统对有机物的去除效果,而同时却大大降低了对TN的去除效能。另外,提高水力负荷会降低对有机物的去除效果,而对氮和磷去除效果的影响则相对较小。

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收藏

页码：104 / 107+111 +111

页数：5

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