长期低强度曝气技术处理黑臭水体的可行性研究

A Feasibility Study on Black and Stink Water Body Treatment with Long-Term/Low-Intensity Aeration Technology

为在保持曝气复氧技术优点的同时，通过控制曝气强度以节约曝气能耗，较大幅度地降低运行成本，拓展其应用范围，提出了1种长期低强度曝气处理黑臭水体的河道复氧技术。取用上海市徐汇区新港河水为实验用水，通过长期低强度曝气与连续曝气、间歇曝气的比较实验，结果表明，低强度曝气技术消除河道黑臭是完全可行的，同时还能有效去除水体污染负荷。实验中，氨氮去除率90％以上时，低强度曝气所消耗能源仅为连续曝气的10．52％和间歇曝气的25％，可节约大量的能源。

A long-term/low-intensity aeration technology for black and stink river water treatment was demonstrated. The experiment has shown that long-term/low-intensity aeration would be feasible to change black and stink state of a river and effectively dispel pollution loading in the river water. In comparison, when over 90% of ammonia nitrogen was removed, the energy consumption of long-term/low-intensity aeration would be only 10.52% of that of continuous aeration or 25% of that of intermittent aeration.