周边进水辐流式二沉池出水方式研究  

Research on Outflow Way of the Secondary Clarifier with Surrounding Radial Inflow

作　　者：崔彦召[1] 陈小光[1] 柳建设[1] 郭瑞省[2] 徐晓雪[1] 刘宁[1] 

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]中国铁路通信信号集团公司北京工程分公司,北京100070

出　　处：《中国沼气》2012年第2期15-19,共5页China Biogas

基　　金：中央高校专项资金自由探索项目(12D11307)

摘　　要：通过计算流体力学FLUENT6.3.26软件,分别对周边进水辐流式二沉池三种出水方式(中间出水、周边出水和周边和中间同时出水)的沉淀区流态进行了数值模拟,系统研究了三种出水方式沉淀区的速度分布、漩涡形态、驻流区和慢流区的体积分数等。结果表明:为有利周边进水辐流式二沉池污泥沉降,三种出水方式中,周边和中间同时出水最优,周边出水其次,中间出水最差。The flow patterns of secondary clarifier with surrounding radial inflow were studied.The outflow from centre,surrounding,and both centre and surrounding,were simulated by Fluent6.3.26 software,respectively.The speed distribution,vortex,volume fraction of stationary and slow flow,were investigated.The results showed that,as for the sludge settlement,simultaneous outflow from both centre and surrounding was the best way of outflow,the surrounding outflow next,and outflow from centre was the worst.

关 键 词：辐流式二沉池 流态 数值模拟 周边出水 中间出水 

分 类 号：X799.03[环境科学与工程—环境工程]