固定化微生物法处理氨氮废水

Immobilized Microbes for Ammonia Nitrogen Removal from Wastewater

通过固定消化菌处理氨氮废水和研究,着重从凝胶颗粒的机械强度、缩水性能、化学稳定性和微生物活性等4个方面来选择包埋剂。结果表明海藻酸钠、卡拉胶、聚乙烯醇和丙烯酰胺是较理想的微生物载体。在选用内烯酰胺凝胶颗粒固定硝化菌的氨氮废水处理工艺中,用正交试验与实验方法列出了影响氨氮去除率诸因素主次顺序,依次为pH值、颗粒重量、丙烯酰胺量、菌体量。并得出丙烯酰胺含量12.5％,包埋菌体含量5％、颗粒重量4g、pH值8.5时,是最佳工艺组合,氨氮的去除率达70％。

This study demonstrated the advantages of the cells immobilization technique for wastewater treatment, including flexibility to fit variable influent conditions, possibility of selecting specifically degrading microbes and potential of achieving higher loads. Tests have been carried during this study on selection of embedding polymers and conditions, treatment configurations and reaction conditions. Good result were obtained in treating a coking effluent from a Shanghai-based factory.