镁橄榄石与钢渣除磷特性的比较研究

被引：3

作者：

管策 ^{[1
,2
]}

王亚炜 ^{[1
]}

魏源送 ^{[1
]}

郑祥 ^{[2
]}

刘吉宝 ^{[1
]}

机构：

[1] 中国科学院生态环境研究中心

[2] 中国人民大学环境学院

来源：

农业环境科学学报 | 2013年 / 32卷 / 07期

关键词：

镁橄榄石; 人工湿地; 基质; 除磷;

D O I：

暂无

中图分类号：

X703.1 [技术方法];

学科分类号：

摘要：

基质是影响人工湿地水质净化效果的关键因素之一,选取镁橄榄石和钢渣作为研究对象,考察和比较它们的磷吸附特性。静态吸附试验结果表明,Langmuir吸附等温方程能够很好地描述镁橄榄石和钢渣对磷酸盐的吸附过程,其磷素理论饱和吸附量分别为161.29mg·kg-1和666.67mg·kg-1。镁橄榄石和钢渣的吸附动力学均符合准二级吸附模型(R2分别为0.9821和0.9834),且磷解吸程度小。动态吸附试验结果表明,当柱高为600mm,水力负荷为0.8m3·(m2·d)-1时,镁橄榄石吸附柱和钢渣吸附柱对磷酸盐均有较好的去除效果,平均去除率分别为77.4%和87.8%,适合作为人工湿地除磷基质推广使用。

引用

页码：1437 / 1444

页数：8

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