光合细菌固定化颗粒处理生活污水的室内模拟研究  

Laboratory Study of Sewage Treatment Using Immobilized PSB Beads

作　　者：樊胜兰 孙仕勇[1,2] 邹翔[1] 郭鹏云[1] 林森[1] Shenglan Fan;Shiyong Sun;Xiang Zou;Pengyun Guo;Sen Lin(Key Laboratory of Solid Waste Treatment and Resource Recycle,Southwest University of Science and Technology,Mianyang Sichuan,621010,China;School of Environment and Resources,Southwest University of Science and Technology,Mianyang Sichuan,621010,China)

机构地区：[1]西南科技大学固体废物处理与资源化教育部重点实验室,四川绵阳621010 [2]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《环境科学前沿（中英文版）》2015年第4期109-117,共9页Frontier of Environmental Science

基　　金：四川省科技厅支撑计划项目(2013FZ0018);西南科技大学研究生创新基金(No.14ycx035);国家自然科学基金项目(41472310)。

摘　　要：固定化光合细菌对污水的处理效果优于分散的光合细菌。本文使用的光合细菌为经筛选、驯化、扩繁、定向培养等生物工程技术培育具有超强污染物降解消耗能力的光合细菌工程菌。以海藻酸钠为光合细菌固定化基质,以硅藻土和蒙脱石为固定化基质添加剂,制备光合细菌固化颗粒。固定化光合细菌处理污水的研究表明,使用海藻酸钠为基质,以硅藻土和蒙脱石为添加剂的固定化光合细菌对生活污水中的COD、NH3-N、TP均具有较高的处理效果,达到70%以上。研究结果表明,环境条件(温度、光照)和投加方式(投加量、投加频率)对固定化光合细菌的处理效率均有影响。通过6d去除率的检测发现,投加频率对固定化颗粒的水质净化效果影响较小,投加量和温度条件对固定化颗粒的水质净化效果影响较大。优化的工艺技术条件是投加量为20 g·L-1,投加频率为4 d·time-1,温度为30℃,对COD、NH3-N、TP的去除效率分别达到了78.48%、80.61%和82.04%。Numerous studies have shown that the immobilized PSB has much more superiority to wastewater pollutants than the free suspended cells.In the presented study,the standard engineering strains of PSB was used after a series of biological engineering technology processing.The immobilized beads were prepared using sodium alginate as substrate with additive minerals of diatomite and montmorillonite.The results showed that the prepared immobilized beads have much efficiency in removal of COD,NH3-N and TP from sewage all over 70%.The optimal water purification process condition is temperature of 30℃,illumination of 100%,addition amount of 20 g?L-1 and addition frequency of 4 d·time-1.Under the optimum conditions,the removal rate of COD,NH3-N and TP reaching maximum at 78.48%,80.61%and 82.04%,respectively.

关 键 词：固定化 光合细菌 污水 净化 去除率 

分 类 号：X784.03[环境科学与工程—环境工程]