给水厂中心导流式旋流反应池设计特色

Design Characteristics of Central Diversion Hydrocyclone Reactor in Waterworks

泉州水厂扩建工程规模为5.0×10^(4) m^(3)/d,针对滦河水源水低温低浊、高温高藻的特点,采用了中心导流式旋流反应池工艺,解决了原有反应池存在的积泥和易滋生蚊虫问题,使出水满足《生活饮用水卫生标准》(GB 5749—2006)的要求。旋流反应池利用水中胶体物质和混凝剂发生径向位移、产生碰撞的工作原理,采用多个旋流反应室串联运行,切线方向进水,同时控制孔中平均线速度高于沉积流速,取消了水中的扰流设施。为提高反应效果,在每个旋流室中加导流柱,反应效果良好,实现了反应过程不排泥,底泥由沉淀池集中排出。工程建成后,出水效果良好,运行稳定,解决了反应段积泥的问题,节省了设备投资。

The treatment capacity of the extension project of Quanzhou Waterworks is 5.0×10^(4) m^(3)/d.According to the characteristics of low turbidity at low temperature and high algae at high temperature in Luanhe River water,a hydrocyclone reactor with central diversion was developed to successfully solve the problems of sludge deposit and mosquitoes breeding in the original reactor,so that the effluent quality met the criteria specified in Standards for Drinking Water Quality(GB 5749-2006).The principle of hydrocyclone reactor is to make use of the radial displacement of colloid and coagulant in water to produce collisions.The multiple hydrocyclone reaction chambers were operated in series,and the water was fed in a tangential direction.At the same time,the average linear velocity in the control hole was higher than the sedimentation velocity,and the turbulence facilities in the water were cancelled.To improve the reaction efficiency,a central deversion column was added into each cyclone chamber,so that good reaction performance was obtained,and no sludge was discharged during the reaction process.The sediment was discharged from the sedimentation tank intensively.After completion of the project,the effluent quality was good and the operation was stable.The hydrocyclone reactor solved the problem of sludge deposit in the reaction section and saved the equipment investment.