滤层配置特征对砂滤池过滤性能的影响

发布时间：2018-03-08 06:34

本文选题：滤层构造特征　切入点：过滤性能　出处：《西安建筑科技大学学报(自然科学版)》2014年05期 　论文类型：期刊论文

【摘要】：滤料粒径、层厚和颗粒分布等滤层配置特征,是保证滤池高效运行的关键因素之一.根据实际应用构造了三种典型的模拟滤层,进行系统的过滤对比试验,研究滤层构造特征对过滤性能的影响.试验结果表明,均质滤料滤层在水头损失增长率、滤后水平均浊度、颗粒物截留效果、滤层产水率以及过滤性能指标F值等多个方面具有优势;滤后水颗粒物截留效果主要决定于滤层厚度,与滤层厚径比L/d值没有相关性;砂滤层对于水中2~5μm之间的颗粒物截留效果差;"细粒径、浅滤层"的滤层配置尽管避免了过滤末期浊度值的上升,但存在水头损失增长率大、滤后水平均浊度高、残留颗粒总数大等弊端,采用"深滤层、均质滤料"的滤层配置方式应是今后水厂滤池设计和技术改造的主要技术措施.
[Abstract]:Filter size, thickness and distribution characteristics of particle filter configuration, is one of the key factors to ensure the efficient operation of the filter. According to the actual structure of three typical analog filter layer, filtering and contrast test system. The effect of filter layer structure characteristics on filtering performance. The test results show that the homogeneous filter the layer growth rate in the head loss, the filtered average turbidity, particle retention and filter water production rate and filtration performance index F-measure has advantages in many aspects; the effect of trapped water particles after filtration mainly depends on the thickness of the filter layer, and the filter layer thickness to diameter ratio and L/d value had no correlation; sand filter layer the particles between M 2~5 water retention effect is poor; "fine size, light filter layer" filter configuration while avoiding the rising end filtration turbidity value, but the increasing rate of water head loss, high turbidity levels were filtered, residual particles total etc.. At the end, the use of "deep filter layer, homogeneous filter material" filter layer configuration mode should be the main technical measures for the design and technical transformation of the filter pool in the future water works.

【作者单位】：西安建筑科技大学环境与市政工程学院;清华大学环境学院环境模拟与污染控制国家重点联合实验室;
【基金】：国家重大水专项(2012ZX07408001)
【分类号】：TU991.24

【参考文献】