| 沉水植物床-固定化微生物技术在水源地修复中的应用研究 |
| 摘要点击 5224 全文点击 2065 修订日期：2011-05-06 |
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| 中文关键词 富营养化 水源地 沉水植物床-固定化微生物 修复 反硝化 |
| 英文关键词 eutrophication drinking water submerged macrophytes bed-immobilized bacteria restoration denitrification |
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| 中文摘要 |
| 研究了沉水植物床-固定化微生物技术在水源地中的修复效果.从太湖水体中筛选分离出土著氨化、亚硝化、硝化和反硝化细菌,通过增殖进入多孔载体内部使之固定,结合自主设计的沉水植物床,在太湖贡湖湾内进行了原位修复实验,该装置抗风浪性能良好,将反硝化细菌数量由5.4×102~2.7×103提高至3.9×105~9.1×105,实验区氧化亚氮排放通量介于3~24 μg·(m2·h)-1之间,显著高于对照组,该技术对总氮去除率为19%~74%,硝氮去除率为24%~81%; 120 d的连续监测数据表明,该技术可用于湖泊水源地修复,有效减轻水体富营养化状况. |
| 英文摘要 |
| The effect of submerged macrophytes bed-immobilized bacteria technology which applied in drinking water restoration was studied. Ammonifying bacteria, nitrobacteria, nitrosobacteria and denitrifying bacteria which isolated from Taihu Labe was immobilized to the porous carries,combined with the submerged macrophytes bed technology,we applied the new equipment in water restoration of gonghu bay,this equipment has good ability to resist storm,the denitrifying bacteria number increased from 5.4×102-2.7×103 to 3.9×105-9.1×105, N2O flux of experimental plot was 3-24 μg·(m2·h)-1, it's more than the contrast group obviously, TN concentration reduced 19%-74%,while NO3- concentration reduced 24%-81% after the equipment running a period of time; The experimental data of 120 days showed that this technology is suitable for drinking water restoration,as it can control eutrophication. |
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