不同曝气法对黑臭河水治理效果的对比研究

Comparative Study on the Control Effect of Different Aeration Methods on Black and Smelly River Water

取特定河水为研究对象,采用无曝气法、普通曝气法和微纳米曝气法,探讨了三种处理手段对相同黑臭水体在相同时间段的净化能力。结果表明:微纳米曝气法对黑臭水体处理效果较好。经过18 d实验,微纳米曝气法对水体pH值与溶解氧(Dissolved oxygen,DO)的冲击作用明显,水体DO浓度达到5.2 mg·L^-1,是初始值的4.3倍。微纳米曝气组中化学需氧量(Chemical oxygen demand,COD)、氨氮、总磷、总氮最终去除率分别为37.4%、59%、15.2%、67%。微纳米曝气法对水体的充氧能力、氧的利用率和对水中污染物的降解效率、去除率都要明显高于普通曝气法。

This paper takes the specific river water as the research object,by using non-aeration method,ordinary aeration method and micro-nano aeration method,The purification capacity of the same black and smelly water in the same time period by three treatment methods was discussed.The results show that micro-nano aeration has good effect on black and smelly water.After 18 days of experiments,the impact of micro-nano aeration on water pH and DO is obvious.The DO concentration of water reaches 5.2 mg·L^-1,4.3 times of the initial value.The final removal rates of COD,ammonia nitrogen,total phosphorus and total nitrogen in the micro-nano aeration group were 37.4%,59%,15.2%and 67%,respectively.The aeration capacity,utilization rate of oxygen and degradation efficiency and removal rate of pollutants in water by micro-nano aeration method are significantly higher than those by ordinary aeration method.