净化湖泊水体氮污染的固定化硝化-反硝化菌研究

Purification of Lake Water by Immobilized Nitrobacteria-Denitrifying Bacteria

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 6 8% ,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 .

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 nitrobacteria denitrifying bacteria techniques were carried out in order to treat eutrophic lake water. The results showed that the removal efficiencies of immobilized nitrobacteria denitrifying bacteria for Total N (TN), NH + 4 N and COD Cr 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).