摘要
依据太湖水体氮污染的特点 ,应用低温辐射技术预辐射引导玻璃态单体丙烯酸羟乙脂 2-Hydroxyethylacrylate(HEA)与聚乙二醇二甲基丙烯酸脂Polyethyleneglycoldimethacrylate(14G)共聚合制备高分子载体 ,并使用增殖细胞技术固定化氮循环细菌群净化湖水。结果表明 ,富营养化湖水经固定化氮循环细菌群SBR工艺净化后 ,总氮下降 75 % ,氨氮下降 91.5 % ,COD下降75 % ,出水水质得到明显改善。研究结果还显示 ,固定化氮循环细菌群的最适反应温度为 2 8℃ ,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。
For purification of eutrophic lake water, immobilized nitrogen cycle bacteria (nitrobacteria- denitrifying) made from radiation copolymerization at low temperatures by means of glass forming monomers, i.e. 2-hydroxyethyl acrylate (HEA) and polyethylene glycol dimethacrylate (14G) were used. The Sequencing Batch Reactors (SBR) system and cell growths of nitrogen cycle bacteria techniques were carried out in order to treat eutrophic lake water. The results showed that the removal efficiencies for total N (TN), NH + 4-N and COD with immobilized nitrogen cycle bacteria were 75%, 91.5% and 75% respectively. The results demonstrated that the optimum temperature of immobilized nitrogen cycle bacteria system was 28℃. Immobilized nitrogen cycle bacteria system was more resistance to low temperature (10℃). The disolved oxygen (DO) concentrations have effect on removal efficiencies for TN.
出处
《核技术》
CAS
CSCD
北大核心
2001年第8期674-679,共6页
Nuclear Techniques
基金
中国国家科委和欧洲联盟科技部支持项目
江苏省科委社会发展项目
关键词
固定化氮循环细菌群
低温辐射技术
水质净化
预辐射共聚合
太湖水
富营养化湖水
水污染处理
Immobilized nitrogen cycle bacteria, Radiation technique at low temperature, Purifying water quality, Preradiation copolymerization, Water of Taihu lake