MBBR工艺应用于超低C/N废水升级改造工程研究  

Application of moving bed biofilm reactor in upgrading of ultra-low C/N wastewater treatment

作　　者：水远敏 矫忠直 唐寿明 Shui Yuanmin;Jiao Zhongzhi;Tang Shouming(DASMART Environmental Technologies(Beijing)Co.,Ltd.,Beijing 100024,China)

机构地区：[1]达斯玛环境科技(北京)有限公司,北京100024

出　　处：《给水排水》2020年第6期111-115,共5页Water & Wastewater Engineering

摘　　要：为实现废水的再生利用,提高水资源的利用率,大连某石化企业对二级处理出水(进水COD和氨氮浓度分别不大于50mg/L和30mg/L,C/N仅为1~2)进行深度处理用于石化企业循环冷却水。原有的深度处理系统运行达不到设计水量,且氨氮处理效率较低。把原有深度处理系统中接触氧化池改造为MBBR生物膜池,改造后,运行水量由原有的1.44万m^3/d提升至3万m^3/d,氨氮去除容积负荷由0.046kgNH3-N/(m^3·d)提升至0.144kgNH3-N/(m^3·d),MBBR填料表面负荷0.633g/(m2·d),出水COD和氨氮分别在30mg/L和1mg/L以下,系统扛冲击性得到加强。In order to realize the reuse of wastewater and raise the utilization of water resources,the secondary treated effluent(Inlet COD and ammonia nitrogen concentration are below 50 mg/L and 30 mg/L respectively,C/N ratio is only 1~2)is treated in depth for circulating cooling water of petrochemical enterprises in Dalian.The original advanced treatment system can not reach the designed water flow,and the ammonia nitrogen treatment efficiency is low.The contact oxidation tank in the original advanced treatment system was transformed into MBBR biofilm tank.After the transformation,the operating water flow was increased from 14400 m3/d to 30000 m3/d,the ammonia nitrogen removal load was increased from 0.046 kgNH3-N/(m3·d)to 0.144 kgNH3-N/(m3·d),the MBBR filler surface load was 0.633 g/(m2·d),the effluent COD and ammonia nitrogen were respectively less than 30 mg/L and 1 mg/L,and the impact of the system was enhanced.

关 键 词：石化工业废水 深度处理 超低C/N MBBR 负荷 

分 类 号：TU992[建筑科学—市政工程]