发电厂循环水养鱼回水的处理工艺研究

The Treatment Process of Drain Water from Fishpond to Circulating Water in Power Plant

讨论了循环水养鱼后的水质变化情况及对生产的影响。通过对水中污染物的分析，论述了生物化学法处理的可能性并对其进行了试验研究，取得了较满意的效果。适宜的处理条件为：采用ＹＤＴ弹性立体填料及可变微孔曝气器，在水温２０～２５℃、水气比１１、停留时间１～２ｈ时处理后的水质远远优于循环水养鱼前的水质，且运行费用较低，便于管理。

This article discuss the situation of drain water quality changing from fishpond to circulating water tower and affecting for producing.After analyzing pollutants of drain water,we discuss the possibility of bio-oxideation treatment and test it,the process has obtained satisfactory,suitable condition is:using YDT elastic space filler and changeable microhole aerationer,temp.20～35℃,ratio of water and gas:1∶1,retention time:1～2hour.The treated water quality is better than circulating water quality before enter fishpond.The treatment cost is fairly low and easily manage.