Based on the structure features of transverse and counterflowtype cooling towers, revamping for cooling tower through structure optimization was explored.
从横流式和逆流式冷却塔的结构特点出发，探讨以结构优化方式改造冷却塔的途径。
2
The secondary treating water from urban domestic sewage treatment plant was treated by fine membrane with the way of periodic counter-flow static type.