响应面法修正沉砂池除砂和有机物去除效率  

Optimal removal efficiency of grit and organic matter by grit chamber coupled with response surface methodology

作　　者：周欢[1,2] 常影[1] 李宏君[1] 乔小雨[1] 王洪宁[1,3] 李森 栗野 霍明昕[1] 朱遂一[1] 王艺[1] ZHOU Huan CHANG Ying LI Hong-jun QIAO Xiao-yu WANG Hong-ning LI Sen LI Ye HUO Ming-xin ZHU Sui-yi WANG Yi(Jilin Engineering Research Centre for Municipal Wastewater Treatment and Water Quality Protection, N ortheast Normal University, Changchun 130117, China China Northeast Municipal Engineering Design and Research Institute Co. Ltd. ,Changchun 130024,China Jilin Tuo-Da Environment Equipment and Engineering Company,Changchun 130024,China)

机构地区：[1]东北师范大学吉林省城市污水处理与水质保障工程技术中心,吉林长春130117 [2]中国市政工程东北设计研究总院有限公司,吉林长春130024 [3]吉林省拓达环保设备工程有限公司,吉林长春130024

出　　处：《东北师大学报（自然科学版）》2016年第4期125-131,共7页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家水体污染控制与治理科技重大专项课题(2014ZX07201-011-004-2);国家自然科学基金资助项目(51408110;51378098;51238001);吉林省科技发展计划项目(20150101072JC)

摘　　要：沉砂池的沉淀泥沙表面覆盖一层含有Fe,Al和有机物的絮体.利用Design-Expert软件的CCD模块,选取了转速、停留时间、桨片数量和安装角度4个因子,分别对除砂率和有机物去除率进行了二次回归分析.结果表明：桨片数量和安装角度对有机物去除效率的影响较小,而6个桨片和30°安装角可获得最优除砂率.图像区域分析证实控制旋转速度为35~45r/min,并降低停留时间有助于获得高除砂效率并使有机物去除效率低于19%.参数优化后可进一步提升沉砂池对细小沙砾的捕获效果.Grit particles, collected at the sand hopper of a grit chamber, were covered by some flocculating constituent containing Fe, A1 and organic matter. Four factors, such as rotate speed, hydraulic retention time, blade number and its setting angle, were optimized to improve the grit and organic matter removal efficiencies by using the response surface methodology. The result shows that high grit removal efficiency was presented when the grit chamber has 6 pieces of blade and the blade setting angle was fixed at 30°. But the blade number and its setting angle had minor influence on the organic matter removal efficieney. The combined image shows that optimized grit and organic matter removal efficiencies were obtained by keeping the rotate speed in the range of 35 to 45 r/min and reducing the hydraulic retention time to 30 s. The grit chamber running at the optimal parameters significantly improved the fine sand removal comparing with the reference in the municipzed wastewater treatment plant.

关 键 词：沉砂池 响应面法 除砂 参数优化 粒径 

分 类 号：X505[环境科学与工程—环境工程]