摘要
为考察COD、硝态氮及后置曝气对反硝化除磷系统的影响,采用A2SBR工艺进行长期实验室研究.结果表明:在进水COD质量浓度为200~250 mg/L和磷酸盐质量浓度为4~6 mg/L时,厌氧段出水COD去除率达80%,缺氧段磷酸盐去除率达92%;在缺氧段,硝态氮进水质量浓度为35 mg/L时,磷酸盐出水质量浓度最低为0.34 mg/L,NO3--N去除率达98.4%.后置曝气能够有效去除水中残余磷酸盐,使磷酸盐的去除率高达99%,并且能够明显改善污泥的沉降性能.
To investigate the effect of COD,NO3--N and post-aerobic on denitrifying dephosphorization process,a lab experiment was carried out by using an anaerobic/anoxic sequencing batch reactor(A2SBR) for a long time.The results show that when the influent COD is between 200 to 250 mg/L and PO43--P is between 4 mg/L to 6 mg/L,the removal efficiency of anaerobic COD,anoxic PO43--P is 80% and 92%,respectively,and when the influent of NO3--N is 35 mg/L,the effluent PO43--P concentration is lowest(0.34 mg/L) and the removal efficiency of PO43--P is 98.4%.Post-aeration can effectively remove the residual phosphate and the removal efficiency of PO43--P is up to 99%,meanwhile,post-aeration can significantly improve the sludge settling characteristics.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2011年第6期51-55,共5页
Journal of Harbin Institute of Technology
基金
城市水资源与水环境国家重点实验室开放基金项目(QA201013)
吉林省科技发展计划应用基础研究项目(20090599)
关键词
反硝化除磷
COD
硝态氮
后置曝气
denitrifying dephosphorization
COD
NO3--N
post-aeration