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.
出处
《水处理技术》
CAS
CSCD
北大核心
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)
关键词
溢流污水
短时絮凝
高速磁沉降
磁场
overflow sewage
short-term flocculation
high speed magnetic sedimentation
magnetic field
