| 摘要: |
| 依据太湖水体氮污染的特点,设计应用低温辐射技术引导玻璃态单体丙烯酸羟乙脂 2-Hydroxyethyl acrylate(HEA)与聚乙二醇二甲基丙烯酸脂 Polyethylene glycol dimethacrylate(14G)制备高分子载体,并使用增殖细胞技术固定化硝化-反硝化菌净化湖水.研究结果表明,富营养化湖水经过固定化硝化-反硝化菌 SBR工艺净化后,总氮下降 70%,氨氮下降 84%,CODCr下降 68%,出水水质得到明显改善.研究结果还表明,固定化硝化反硝化菌系统的最适反应温度为28℃,溶解氧浓度对总氮的去除率有一定的影响,固定化菌在低温条件下表现出明显的耐受性. |
| 关键词: 低温辐射技术 固定化硝化-反硝化菌 水质净化 共聚物载体 太湖水 |
| DOI：10.18307/2000.0204 |
| 分类号: |
| 基金项目:国家科委和欧盟项目(CI1*-CT93-0094(DG12HSMU))及江苏省社会发展项目(BS99021)资助. |
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| Purification of Lake Water by Immobilized Nitrobacteria-Denitrifying Bacteria |
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LI Zhengkui, PU Peimin
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Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
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| Abstract: |
| In this paper, for purification of eutrophic Lake Water, immobilized nitrobacteria-denitrifying bacteria made from radiation copolymerization at low temperatures by means of glass forming monomers, i.e.2-hydroxyethyl acrylate (HEA) and polyethylene glycol dimethacrylate (14G) have been used-The Sequencing Batch Reactors (SBR) system and cell proliferation of nitrobacteiia-denitiifying bacteria techniques were carried out in order to treat eutrophic lake water.The results showed that the removal efficiencies of immobilized nitrobacteiia-denitiifying bacteria for Total N (TN), NH4+-N and CODcr were 70%, 84% and 68%, respectively.The results demonstrated that the optimum temperature of immobilized nitrobacteria-denitrifying bacteria system was 28℃.Immobilized nitrobacteria-denitrifying bacteria was more resistance to low temperature(10℃).The dissolved oxygen (DO) concentration have effect on removal efficiencies for Total N(TN). |
| Key words: Radiation technique at low temperature immobilized nitrobacteria-denitrifying bacteria purifying water quality copolymerization carrier Taihu Lake |
