污水生物处理基于氧调控的节能策略  

Energy saving strategy based on oxygen control in wastewater bio-treatment

作　　者：韦朝海 汝旋 杨兴舟 冯春华 魏永芬[2] 李富生[2] WEI Chaohai;RU Xuan;YANG Xingzhou;FENG Chunhua;WEI Yongfen;LI Fusheng(School of Environment and Energy,South China University of Technology,Guangzhou 510006,Guangdong,China;River Basin Research Center,Gifu University,Gifu 501-1193,Japan)

机构地区：[1]华南理工大学环境与能源学院,广东广州510006 [2]岐阜大学流域研究中心

出　　处：《化工进展》2018年第11期4121-4134,共14页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(21377040;51278199);广东省应用型科技研发专项资金项目(2015B020235005)

摘　　要：在系统回顾污水生物处理活性污泥法的基础上,以生物氧化沟、生物好氧流化床、生物转盘、接触氧化法作为典型工艺案例,论述了通过氧传质来调控工艺过程节能效率的途径,包括气源风机、供风管线与输配、气液传质、液固传质等多步骤。讨论了水质成分/水质结构、表面活性剂、反应器特征、环境因素、工艺变化等因素对氧利用效能的影响,从风机性能与气体输送、工艺创新与反应器结构优化、微生物污泥与运行管理的结合提出基于氧调控的总体节能策略。建议加强科学基础、技术范围、规模放大的理论与实践探索,从污染物削减、碳减排、生态风险等方面提出更加全面的能量约束评价系统技术。On the basis of systematic review of activated sludge method for wastewater biological treatment,making biological oxidation ditch,aerobic biological fluidized bed,biological rotating disc,contact oxidation method as typical cases,this paper discussed energy saving efficiency of the treatment processes through oxygen mass transfer,including air blower,air supply line and distribution,gas-liquid mass transfer,and liquid-solid mass transfer.The factors,including water quality composition/water quality structure,surface active agents,reactor characteristics,environmental factors,and process variations,were discussed for the influence of oxygen utilization efficiency.The overall energy saving strategies were proposed based on oxygen control,by combining with fan performance and gas transportation,technology innovation and reactor structural optimization,microbial sludge and operational management.Finally,we suggested that①strengthen the explorations of theory and practice on scientific foundation,technological scope and scale magnification,②propose more comprehensive and systematic technology of energy constraint evaluation by pollutant subduction,carbon emission and ecological risk.

关 键 词：环境工程 废水处理 活性污泥法 供氧技术 节能策略 

分 类 号：X703.1[环境科学与工程—环境工程]