| 摘要: |
| 本文依据太湖秋冬季水体氮污染的特点,应用辐射增殖氮循环细菌进行了净化湖水氮污染的动态模拟实验.研究结果表明,富营养化湖水经固定化氮循环细菌净化后,总氮下降72.4%,氨氮下降 85.6%,出水水质得到明显改善.固定化氮循环细菌在冬季低温 (7℃)条件下仍保持了较高的除氮能力,总氮和氨氮去除率分别为 55.6%,58.9%.除氮效果与湖水滞留时间有关,探讨了固定化氮循环细菌的除氮机理. |
| 关键词: 预辐射聚合 固定化氮循环细菌 动态实验 水质净化 太湖 |
| DOI：10.18307/2000.0405 |
| 分类号: |
| 基金项目:中国国家科委和欧洲联盟科技部支持项目:Physico-biological engineering for removing algae and purifying water quality in Lake Taihu,China.合同号CI1*-CT93-0094(DG12HSMU).江苏省科委社会发展项目:转化湖泊氮营养盐的固定化硝化-反硝化菌研究,合同号BS99021. |
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| Purification of Lake Water by Simulative Dynamic Experiment Using Immobilized Nitrogen Cycle Bacteria in Winter |
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LI Zhengkui, PU Peimin
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Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P.R.China
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| Abstract: |
| Experimental studies were carried outon the purification of eut rophic lake water by simulative dy namic experiment using immobilized nit rogen cy cle bacteria.The results showed that the eut rophic water of Taihu Lake can be purified ef fectively as it pass through dif ferent immobilized nit rogen cy cle bacteria zones.The removal eff iciencies for Total N (TN), NH4+-N with immobilized nit rogen cycle bacteria were 72.4% and 85.6%, respectively.It was found that the immobilized nit rogen cycle bacteria also have purificatory effecton eut rophic water of Taihu lake in winter (7℃), the removal ef ficiencies for Total N (TN), NH4+-N were 55.6%, and 58.9%, respectively.The removal ef ficiencies for TN and NH4+-N depended on the retention time of the water in eximperimental zone. |
| Key words: Preradiation polymerization immobilized nitrogen cycle bacteria dynamic test purifying water quality Taihu Lake |
