摘要
对固定化活性污泥磁性微球制备过程中的几个影响因素进行了探讨，得出的最佳条件是；8％的PVA，0．20％的藻酸钠组．成载体溶液，以1：1．25的比率与含3％的活性碳和1．3％的磁性Fe3O4的活性污泥混合，然后在含有CaCl2的饱和硼酸溶液中固化24h，再在NaH2PO4溶液中进一步固化，制得的固定化活性污泥磁性微球表现出较好的强度和COD降解率，为其在污水处理中的应用提供了依据。
The influential factors of preparation of immobilized activated sludge magnetic pills which is used in sewage treatment is discussed. The optimized conditions is 8 % PVA mixed with 0.20% sodium alginate, 1：1.25 ratio of carrier solution to activated sludge, 3% activated carbon and 1.3% magnetic Fe3O4 in activated sludge, immobilizing in saturated boric acid solution and 2 % CaCl2 solution for 24 hour, and dipping in 1mol/L NaH2PO4 solution. The immobilized activated sludge magnetic pills have better gel strength and degradation ratio of COD in magnetic field, which is groundwork of industrial application.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2009年第B12期64-68,共5页
Environmental Science & Technology
基金
贵州省教育厅自然科学基金项目资助（黔教科2006302）
关键词
固定化
磁性微球
活性污泥
污水处理
immobilize
magnetic pills
activated sludge
sewage treatment
