响应曲面法对优化侧向回流一体化生物膜反应器去除氨氮的效果模拟  

Simulation of Effect of Response Surface Methodology for Optimized Lateral Reflux Integrated Biofilm Reactor on Ammonia Nitrogen Removal

作　　者：汪晨晨 程方奎 吕锡武[1] WANG Chenchen;CHENG Fangkui;Lü Xiwu(School of Energy and Environment,Southeast University,Nanjing 210096,China;Engineering Research Center of Taihu Lake Water Environment〈Wuxi〉,Wuxi 214000,China)

机构地区：[1]东南大学能源与环境学院,江苏南京210096 [2]东南大学无锡太湖水环境工程研究中心,江苏无锡214000

出　　处：《净水技术》2023年第1期94-99,共6页Water Purification Technology

基　　金：国家水体污染控制与治理科技重大专项(2018ZX07701001-016)。

摘　　要：针对农村分散式生活污水的处理,设计了侧向回流一体化生物膜反应器,缩短了污水处理工艺流程,减小了设施占地面积。文章从优化反应器对氨氮的处理效果出发,运用Box-Behnken响应曲面法,建立了关于氨氮去除率的数学模型,以寻求反应器水力停留时间、填料填充率和气水比的最佳参数组合。响应曲面法的结果表明:影响因素的显著性顺序为填料填充率>水力停留时间>气水比,并且填料填充率与水力停留时间、水力停留时间与气水比、填料填充率与气水比的交互作用均为显著。模型预测结果表明,当水力停留时间为6.98 h、填料填充率为39.67%、气水比为7.73时,侧向回流一体化反应器对氨氮的去除率为97.70%,验证试验结果为98.09%,与模型预测值偏差仅为0.39%。For the treatment of rural decentralized domestic wastewater,an integrated biofilm reactor with lateral reflux was designed to simplify the wastewater treatment process and reduce the area of facilities.In this paper,the mathematical model of ammonia nitrogen removal rate was established by Box-Behnken response surface methodology(RSM)to optimize the treatment effect of ammonia nitrogen removal in the reactor,so as to find the optimal parameters combination of hydraulic retention time,filler packing rate and gas water ratio.The results of response surface methodology showed that the significant order of influencing factors was filler packing rate>hydraulic retention time>gas water ratio,and the interaction between filler packing rate and hydraulic retention time,hydraulic retention time and gas water ratio,filler filling rate and gas water ratio were significant.Model predicted when HRT was 6.98 h,packing ratio was 39.67%,and gas water ratio was 7.73,the removal rate of ammonia nitrogen in the lateral reflux integrated reactor was 97.70%,and the verification experimental result was 98.09%,which was only 0.39%deviation from the model prediction.

关 键 词：农村生活污水 一体化反应器 氨氮 生物膜 响应曲面法 

分 类 号：X703[环境科学与工程—环境工程]