排泥管对网格絮凝池流态的影响  

Influence of Sludge Discharge Pipe on Flow Pattern in Lattice Flocculent Pond

作　　者：胡远来[1] 陆先镭[1] 贺卫宁[1] 邱迅 刘怡[1] 杨强[1] 

机构地区：[1]中机国际工程设计研究院有限责任公司,湖南长沙410007

出　　处：《中国给水排水》2017年第23期51-54,共4页China Water & Wastewater

摘　　要：多格竖井共用一根排泥管的网格絮凝池存在短流和排泥不均匀的问题。通过理论计算相邻竖井的短流流量发现,减小排泥喇叭口规格,可增大局部水头损失,减少短流。采用计算流体力学软件Fluent对非排泥时段絮凝池内流态进行数值模拟,模拟结果与理论计算结果一致。对排泥时段絮凝池内流态进行数值模拟发现,适当减小排泥喇叭口规格可有效提升各竖井的排泥均匀度,改善排泥管积泥问题。建议在排泥阀前端设置排泥冲洗管,定期进行冲洗,以解决排泥管积泥堵塞问题。The lattice flocculent pond that has multiple vertical shafts sharing one sludge discharge pipe has problems of short-cut flows and uneven sludge discharge. Through theoretical calculations, it the lattice flocculent pond during non-discharging phase were simulated in computational fluid dynamics bution of sludge discharge between the vertical shafts, and then reduce the sludge deposition in the sludge discharge pipe. To avoid the sludge blockage in the discharge pipe, it was suggested that a flushing pipe should be installed in front of the mud valve and the sludge discharge pipe should be flushed re^larlv.

关 键 词：网格絮凝池 短流 排泥均匀性 数值模拟 

分 类 号：TU991.2[建筑科学—市政工程]