摘要
以新疆额尔齐斯低温低浊河水为典型研究对象,通过调节絮凝反应条件和增加颗粒物浓度,并结合颗粒计数、絮体成长监测、过滤性能评价等方法,对低温低浊水的混凝工艺条件进行了研究。结果表明:絮凝慢速反应时间为20～25 min,水力剪切强度G=30 s-1,其对应的GT值为(3.6～4.5)×104时,可以得到较好的混凝效果。此外,通过投加高岭土提高原水浊度,沉后水的过滤性能得到显著改善。
Rrtysh river of Xinjiang, a typical low temperature and low turbidity water source, was investigated by adjusting the flocculation reaction conditions and increasing the original concentration of particles, also it was coupled with the methods, such as particle counting, floc growth monitoring and filtering performance evaluation. The results showed that satisfied coagulation performance was under the condition of slow flocculation time about 20 - 25 min, hydraulic shear strength 30 s - 1 , GT （3.6 - 4.5 ） x 104. In addition, the filterability of settling water was improved apparently by adding kaolin particles to increase raw water turbidity.
出处
《供水技术》
2009年第3期8-11,共4页
Water Technology
关键词
低温低浊
絮凝条件
颗粒数
絮体
过滤指数
low temperature and low turbidity
flocculation condition
particle
floc
filter index
