紊动对水体过饱和溶氧释放的影响初探

The effect of turbulence on the release of supersaturated dissolved oxygen in the water

为探究紊动对水体中溶氧释放的促进效果,设计以潜水泵排水的方式,开展了不同水泵数量、功率、摆放方式、排水方向等工况下过饱和溶氧释放过程研究试验。结果表明,紊动对水体中溶氧释放有较好的促进效果。放入5个泵(功率20 W、纵向排水)时,水体溶氧释放系数为0.514 h^(-1),是未放入水泵时溶氧释放系数0.026 h^(-1)的19.77倍。当水泵垂直于水面排水时,溶氧释放效果较好。水泵个数越多、功率越大,溶氧释放系数越大,溶氧释放效果越好。

To explore the effect of turbulence on the release of dissolved oxygen in water, a series of dissipation experiments were conducted with different quantity of water pump, power, put way, drainage direction, using submersible pump drainage. The results showed that turbulence of water can greatly accelerate the release of dissolved oxygen. When five pump was used with power as 20 W and longitudinal drain, the release coefficient was increased to 0. 514 h ^-1 , 19. 77 times as large as that without pump condition （0. 026 h^-1） . When the pump is vertical to water surface, the effect of dissolved oxygen was better. Dissolved oxygen release coefficient and effect increased with the quantity and the power of pump.