曝气生物膜反应器处理受污染河道水体实验研究

Experimental Study on the Treatment of Polluted River by MABR

以某受污染河道水体为研究对象,设计了曝气生物膜反应器(MABR),探讨了主要污染物如COD、氨氮、TN、DO等降解及变化规律。结果表明,MABR系统运行稳定,有较高的抗冲击性能能力,对河道受污染的主要污染物有迅速的去除能力和显著的去除效果,出水水质能稳定达到GB 3838-2002地表水IV类标准。在MABR膜表面生物反应时,需添加60~80 mg/L的碳源,同时维持不高于3 mg/L的DO质量浓度,提高反硝化效果,控制TN含量;COD低于20 mg/L时,深度脱除速率下降。

Taking a polluted river water as the research object,the aeration membrane bio-reactor(MABR)was designed,and the degradation and change rules of main pollutants such as COD,ammonia nitrogen,TN and DO were discussed.the MABR system operated stably,had high impact resistance and rapid removal capacity and significant removal effect on the main pollutants polluted in the river,the effluent quality could stably reach the surface water class IV standard of GB 3838-2002.During the biological reaction of MABR membrane surface,carbon source of 60~80 mg/L should be added,and mass concentration of dissolved oxygen not higher than 3 mg/L should be maintained to improve denitrification effect and control TN content.When the COD was lower than 20 mg/L,the depth removal rate decreased.