SBR磁化生物工艺处理生活污水  

Domestic sewage treatment by an SBR magnetic biological process

作　　者：任月明[1] 张密林[1] 赵翠[1] 陈兆波[1] 宋川[1] 

机构地区：[1]哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2007年第6期711-714,共4页Journal of Harbin Engineering University

摘　　要：为了缩短活性污泥在SBR反应器中的沉淀时间,提高单位体积活性污泥的有机负荷率,对传统SBR法处理工艺进行了改进.采用向SBR反应器中投加纳米磁粉人工磁化微生物絮体的新型生物法来处理生活污水,并运用磁分离技术对经过磁化并吸附了有机物的污泥絮体进行沉降分离.小试试验研究了曝气时间、沉淀时间、最佳磁粉投量以及磁粉失效时间对处理效果的影响,同时确定了工艺的最佳运行参数.结果表明,磁性生物絮凝泥水混合液在磁分离器中能快速分离,磁场和磁粉强化了菌胶团的活性,提高了废水处理效果,采用最佳方式运行时,COD、BOD5的去除率分别可达95%以上,出水水质优于国家一级排放标准.In order to shorten processing time and improve the organic load per unit of active sludge in an SBR（sequencing batch reactor） reactor, this paper investigates improvements in traditional SBR techniques. A new biological process using artificially magnetized microbe flocks and nano-ferromagnetic powder is presented for treatment of domestic sewage. A magnetic separation technique is applied to subside and separate the sludge that was magnetized and absorbed organic material. The effects of aeration time, deposition time, best dosage and invalidation time of nano-ferromagnetic powder on the treatment of wastewater were investigated through beaker tests to determine the best operating parameters. Results show that mixed liquids of magnetic and biologic flocculation can be separated quickly and effectively. Magnetic fields combined with magnetic powder enhance the sludge＇s activity and treatment speed substantially. Running in optimum mode, the a＇cerage removal rate is over 95% for COD and BOD5 respectively. Disposal water quality is above China＇s first level discharge standards.

关 键 词：磁化生物 纳米磁粉 磁性污泥 序批式污性污泥反应法 污水处理 

分 类 号：X703.1[环境科学与工程—环境工程]