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1、活性砂过滤器工作原理活性砂过滤器工作原理过滤物料过滤物料型式 密度 (kg/ m ) 成本 (EC U / m ) 化工滤料 活性碳 无烟煤 石英砂 花岗岩砂 磁粉 1000 1200 1400 2650 4100 5000 2000 800 400 175 2000 2500 过滤的机理Transport to sand particle移动到砂粒Attachment to sand particle吸附到砂粒后Molecular diffusion分子扩散Sedimentation沉淀Chance contact偶然接触Straining变形Surface forces表面张力进水进水洗砂
2、脏水洗砂脏水滤后水滤后水传统反洗式砂滤WORKING PRINCIPLE OF THE ASTRASAND FILTERASTRASAND活性砂滤的工作原理活性砂滤的工作原理Water Flow水路The water is transported into the filter进水输入活性砂滤系统进水输入活性砂滤系统And enters the filterbed via the supply pipe and the distributors通过输水管和分配器进入砂层Water flows upwards through the filterbed and filtrate space水上流
3、进入滤床和过滤空间Water leaves the filter at the overflow weir通过出水堰板离开砂滤系统进水滤后出水Water Flow水路feedfiltrate有效滤床厚度：2m;上流速度：15m/h;=有效过滤时间：8minSand bed is moving downward砂床向下移动and washed并被清洗Dirty Sand is lifted in the airlift肮脏砂在提砂管中气提sand falls back on top of the filter bed通过洗砂器回落到滤床WORKING PRINCIPLE OF THE ASTRA
4、SAND FILTERASTRASAND活性砂滤的工作原理Sand Flow砂流砂流Real time: 4-6 hrs真实循环洗砂时间：46小时Sand Flow砂路砂路 airlift principle气提提砂原理气提提砂原理滤后水水流通过洗砂器液位高差Washwater洗砂脏水The washer water flow洗砂器 - 水路滤后水空气Air scours dirt from sand空气冲刷滤砂上的脏物Sand falls through washer滤砂通过洗砂器回落Dirt taken away with washwater脏物通过清洗水被移除Sand砂Dirt脏物The washer sand flow洗砂器 - 砂路
