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| 典型低温低浊水体的混凝工艺条件研究 | |
| 作者姓名： | 郑蓓 李涛 葛小鹏 林进 王东升 |
| 作者单位： | 1. 中国科学院生态环境研究中心,饮用水科学与工程中心,北京,100085;河北师范大学,化学与材料科学学院,河北,石家庄,050016 2. 中国科学院生态环境研究中心,饮用水科学与工程中心,北京,100085 3. 河北师范大学,化学与材料科学学院,河北,石家庄,050016 |
| 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20～25min，水力剪切强度G=30s^-1，其对应的GT值为（3．6～4．5）×10^4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。 |
| 关 键 词： | 低温低浊 絮凝条件 颗粒数 絮体 过滤指数 |
Coagulation conditions for typical low temperature and low turbidity water |
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| Authors: | Zheng Bei Li Tao Ge Xiaopeng Lin Jin Wang Dongsheng |
| Affiliation: | Zheng Bei, Li Tao, Ge Xiaopeng, Lin Jin, Wang Dongsheng ( 1. The Drinking Water Science and Engineering Center, Chinese Academy of Sciences, Beijing 100085, China; 2. College of Chemistry and Material Science, Heibei Normal University, Shijiazhuang 050016, China) |
| Abstract: | 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. |
| Keywords: | low temperature and low turbidity flocculation condition particle floc filter index |
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