【摘要】 采用改进的k-ε两方程模型和SIMPLEC算法,对平流式初沉池内速度场进行了数值模拟,研究发现:池内存在着一个小回流区和一个大回流区,小回流区位于进水区底部,大回流区位于入流挡板后的沉淀池上部,约占整个容积的30%~40%,是初沉池性能下降的重要原因。更多还原

【Abstract】 The improved k-ε two equation model and SIMPLEC method were used to simulate the wastewater velocity distribution in primary clarifier.Results indicate that there are two backflow zones in the clarifier.The smaller one is in the bottom of the inlet zone,and the bigger one is in the settling zone behind the inlet baffle,so as to form a big dead zone,which is taken up 30%~40% the volumn.It may be the important reason for the clarifier’s low performance.更多还原