扬水曝气技术在水源水质改善中的应用

扬水曝气技术是新开发的水质改善技术,用于混合上下水层、控制藻类生长、增加水体溶解氧、抑制底泥污染物释放.将该技术应用于某水源地,其提水效率达到同类设备--同温层曝气器的两倍;控制了水体表层的藻类数量,抑制了藻类的生长,将藻类叶绿素a含量降低了13.96%.扬水曝气技术的适用条件:用于控制藻类生长时,水深应不小于10 m;用于抑制底泥污染物释放时,水体应存在溶解氧小于1～2 mg/L的厌氧条件.

Application of the technology of lifting water and aeration for improving water quality

The technology of lifting water and aeration was novel for its improvement of water quality,mixing of water,controlling algae growth,increasing dissolved oxygen in water,and constraining the release of pollutant in sediment. This technology was applied in one water source in north of China.The capacity of lifting water is twice than hypolimnetic aerator.The algae in surface is controlled by the technology of lifting water and aeration,and the Chlorophylls-a in water is decreased by 13.96%.The operation situation of this lifting water and aeration reactor was optimized.The water depth must not be less than 10 m under the control of algae growth and the dissolved oxygen should be less than 1~2 mg/L when it was used to constrain the release of pollutant in sediment.