回行流人工湿地充氧问题的研究及对水质的改善

Study on the Return Flow Constructed Wetland Oxygenation Problem and Improvement of Water Quality

通过回行流人工湿地表面充氧,解决下一级人工湿地水中溶解氧含量不足的问题。研究溶解氧的日变化特征及池底藻类对充氧的影响。在停留时间30min前提下,随着水深的降低溶解氧增长趋势明显,增长率增加,溶解氧的增加与水深成反比。池深达到10mm时即使在最不利阴天的情况溶解氧也能达到3.2mg/L,满足下一级人工湿地的需求,同时也能对水质有一定的改善。

Through the return flow constructed wetland surfaceoxygenation, solve the water dissolved oxygen content of artificialwedand the next level of the problem of insufficient. Study on dissolved oxygen and diurnal variation of the bottom of the pooleffects of algae on oxygenation. In the residence time of 30min in the premise, as the water depth decreased dissolved oxygen increased obviously, the growth rate increased, the increase of dissolved oxygenand water depth is inversely proportional to. Pool depth reached 10mmeven in the most unfavorable cloudy dissolved oxygen can reach 3.2mg/ L, meet the next stage constructed wetland needs, also can have certain improvement on water quality.