生活污水PVA生物处理工艺  

Treatment of domestic sewage by PVA biological process

作　　者：王利娜[1] 刘永红[1] 闫爱军 刘磊[1] 李佳凤 

机构地区：[1]西安工程大学环境与化学工程学院,西安710048 [2]中国大唐集团科学技术研究院有限公司西北分公司,西安710065 [3]北方特种能源集团有限公司西安庆华公司,西安710025

出　　处：《环境工程学报》2016年第4期1688-1692,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(21176197);国家水体污染控制与治理科技重大专项(2009ZX07212-002-002);陕西省科技统筹创新工程计划(2011KTZB03-03-01);陕西科学技术研究发展计划(2008k07-14)

摘　　要：采用PVA生物处理工艺对某高校生活污水(COD 140~270 mg/L,NH_4^+-N 20~50 mg/L)进行处理。结果表明:PVA生物系统(85 L)在容积负荷1.5 kg COD/(m^3·d)连续运行25 d,系统平均每天处理水量达到272 L,出水平均COD和NH_4^+-N浓度分别达到27.9 mg/L和1.3 mg/L,此外,经紫外消毒后最终出水菌落数降至1.0×10~4个/L以下;扫描电镜观察发现,PVA凝胶小球表面和内部均富含大量球菌、丝状菌和杆菌;该系统25 d连续运行过程中污泥产率仅为0.08MLSS/COD_(removed),无污泥外排。Domestic sewage（ COD range from 140 to 270 mg / L,NH_4^＋-N range from 20 to 50 mg / L） from a university was treated by a PVA biological process（ 85 L）. The results showed that during 25 days continuous operation（ volumetric loading rates of 1. 5 kg COD /（ m^3·d））,the daily wastewater treatment capacity of the biological system reached 272 L / d and effluent COD and NH_4^＋-N were 27. 9 mg / L and 1. 3 mg / L,respectively.The final bacterial standard plate-count was below 1. 0 × 104 units / L by ultraviolet disinfection. Some Aureus,filamentous bacteria,and bacilli were observed in the outer and inner of PVA-gel beads by scanning electron microscope（ SEM）. And during 25 days continuous operation,the sludge yield was 0. 08 MLSS / CODremovedand only small amounts of sludge were discharged from the system.

关 键 词：PVA 生物处理工艺 生活污水 容积负荷 污泥产率 

分 类 号：X703[环境科学与工程—环境工程]