| .镁橄榄石与钢渣除磷特性的比较研究[J].农业环境科学学报,2013,32(7):. |
| 镁橄榄石与钢渣除磷特性的比较研究 |
| Comparison of Phosphorous Adsorption by Forsterite and Furnace Slag |
| |
| DOI：10.11654/jaes.2013.07.022 |
| 中文关键词: 镁橄榄石 人工湿地 基质 除磷 |
| 英文关键词: forsterite constructed wetland media phosphorous removal |
| 基金项目: |
|
|
| 摘要点击次数: 1952 |
| 全文下载次数: 1819 |
| 中文摘要: |
| 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161.29 mg·kg-1和666.67 mg·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0.982 1和0.983 4），且磷解吸程度小。动态吸附试验结果表明，当柱高为600 mm，水力负荷为0.8 m3·（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。 |
| 英文摘要: |
| Media is one of the key factors fortreatment performanceof the constructed wetland. Forsterite and furnace slag were used to compare the characteristics of phosphorous adsorption. Results of batch test showed that the phosphorus adsorption process of both forsterite and furnace slag fitted with the Langmuir isothermal adsorption equation very well, and their saturation adsorption capacities were 161.29 mg·kg-1 and 666.67 mg·kg-1, respectively. The pseudo second-order rate equation could fit the experimental data of forsterite and furnace slag well（R2 were 0.982 1 and 0.983 4, respectively）, and the phosphorus desorption from both forsterite and furnace slag was low. At the column height of 600 mm and hydraulic loading rate（HLR） of 0.8 m3·（m2·d）-1, results of dynamic adsorption test showed that both the forsterite packed column and furnace slag packed column had significant performance of phosphorous removal, i.e., 77.4% and 87.8% of the average removal rates, respectively. All these results clearly showed that both forsterite and furnace slag were suitable as media of the constructed wetland for phosphorus removal. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
