O/A两级生物砂滤池的二次启动及其脱氮除碳效果  

Secondary start-up of O/A biological sand filters and its removal effect of nitrogen and carbon

作　　者：李思敏[1] 赵南南[1] 付民 赵博[1] 

机构地区：[1]河北工程大学城市建设学院,河北邯郸056038 [2]邯郸市政污水处理有限责任公司,河北邯郸056002

出　　处：《河北工程大学学报（自然科学版）》2010年第4期36-39,共4页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：中韩国际合作项目;河北省科技支撑项目(07276713D)

摘　　要：以城市二级处理出水为试验原水,通过逐渐提高滤速的方式,对停止运行近5个月的O/A两级生物砂滤池进行重新启动。重点研究了反应器的二次启动速度和启动后的脱氮除碳效果,以及C/N比对该工艺脱氮除碳效果的影响。试验结果表明,石英砂表面的生物膜并未死亡,通水运行后能在很短的时间内恢复正常。稳定运行期间,系统对CODCr和NH4+-N的平均去除率分别为45.53%和65.50%,出水CODCr和NH4+-N的平均浓度分别为48.50mg/L和4.12mg/L。当C/N比为5.0时,O/A两级生物砂滤池具有较高的TN脱除效果,TN去除率可达到30%以上,滤池出水TN含量低于15mg/L,均能达到一级A标准的要求。Effluent of municipal secondary treatment was chosen as raw water to re-start up the O/A biological sand filters which stopped running nearly five months,in the way of increasing hydraulic load gradually.The secondary start-up speed,the removal effect of nitrogen and carbon,the influence of C/N ratio on removal effect of nitrogen and carbon were mainly studied.The results showed that the membrane attached on the surface of quartz sand is not dead,the O/A biological sand filters can back to normal run in a very short time.During stable operation,the average removal of CODCr and NH4^＋-N were 45.53% and 65.50% respectively,and the average concentration of CODCr and NH4^＋-N in effluent were 48.50mg/L and 4.12mg/L respectively.The removal efficiency of O/A biological sand filters is high for total nitrogen when the C/N ratio is 5.0;the removal rate of total nitrogen reaches above 30%,the average concentration of TN in effluent is lower than 15 mg/L.The effluent quality met the first A class standard of ＂urban sewage treatment plant pollutant discharge standard＂（GB18918-2002）.

关 键 词：O/A两级生物砂滤池 二次启动 脱氮除碳 碳氮比 

分 类 号：X552[环境科学与工程—环境工程]