摘要
基于后台阶流理论,设计了菱形翼片隔板絮凝反应器,实现了同时对流体微观涡旋强化及宏观涡旋均布进行有效控制。同时结合数值模拟计算结果和中试处理效果,优化了菱形翼片隔板絮凝反应器的特征尺寸参数,并将其用于钢厂废水回用项目。工程运行结果表明,单套设备处理量为750 m3/h,出水浊度可稳定在1 NTU左右,对COD的去除率达到了48.5%,大大降低了后续处理负荷,由此证明该设备具有较高的絮凝反应效率,出水水质良好,适用于钢厂废水回用工程。
A flocculation reactor with lozenge fin plates, which can simultaneously control the intensification of flow micro-vortex and the equal distribution of flow macro-turbulence, was constructed according to the backward-facing step flow theory. The geometric parameters of the flocculation reactor were optimized by numerical investigation and a pilot experiment. The optimized reactor was applied in a steelworks wastewater reuse project. The operation results show that when the reactor capacity is 750 m3/h. the effluent turbidity is about 1 NTU, and the removal rate of COD is 48.5%, which decreases the load of the follow-up treatment. It is proved that the reactor has higher flocculation efficiency and good effluent quality, and it can be used in steelworks wastewater reuse projects.
出处
《中国给水排水》
CAS
CSCD
北大核心
2010年第5期42-45,共4页
China Water & Wastewater
基金
上海市闵行区科委集群创新项目
关键词
菱形翼片隔板
絮凝
废水回用
浊度
lozenge fin plate
flocculation
wastewater reuse
turbidity
