短时絮凝-高速磁沉降溢流污水快速处理装置开发  

DEVELOPMENT OF RAPID PROCESSING DEVICE OF SHORT-TERM FLOCCULATION AND HIGH-SPEED MAGNETIC SETTLEMENT TREATING OVERFLOWS

作　　者：解清杰[1] 段明飞[1] 吴春笃[1,2] 刘兴[1] 

机构地区：[1]江苏大学环境学院,江苏镇江212013 [2]扬州环境资源职业技术学院,江苏扬州225127

出　　处：《水处理技术》2012年第2期94-97,共4页Technology of Water Treatment

基　　金：国家"十一五"重大水专项基金资助项目(2008ZX07317-001)

摘　　要：开发了一种短时絮凝-高速磁沉降反应器,依靠投加磁种和外加磁场来强化絮凝和缩短污泥沉降时间。该反应器具有水力停留时间短、占地面积小、操作灵活等优点。试验证明,对于溢流污水,当水力停留时间为8 min时,且在PAC投加量为30 mg.L-1、磁种投加量为350 mg.L-1、磁场强度为300 mT时,反应器具有最佳运行工况,其对氨氮、总磷、SS和COD去除率分别达到76.67%、85.25%、92.5%、76.22%。An short-term flocculation and high speed magnetic settlement reactor were developed.The equipment depended on dosing magnetic seed and external magnetic field to enhance coagulation and shorten sludge settling time.The reactor had advantages such as short hydraulic retention time,small floor space and flexible operation,etc.It had been proved in experiments that when the hydraulic retention time of the equipment was 8min,the optimum operating condition of the reactor was as follows： the dosage of PAC and magnetic seed were 30 mg·L-1,350 mg·L-1,respectively,and the intensity of magnetic field was 300 mT.Under this condition,the removal rate of ammonia nitrogen,phosphorus,TSS and COD were 76.67%、85.25%、92.5%、76.22%,respectively.

关 键 词：溢流污水 短时絮凝 高速磁沉降 磁场 

分 类 号：X703.3[环境科学与工程—环境工程]