电子受体质量浓度对反硝化除磷过程的影响

Effect of electron acceptor on denitrifying phosphorus removal

目的为研究一种最佳的节能生物除磷方法.方法在传统SBR反应器中,考察了分别以NO3--N和NO2--N为电子受体的反硝化除磷过程中的脱氮吸磷现象.结果试验表明以NO3--N为电子受体硝酸型反硝化除磷过程在除磷效果上要优于以NO2--N为电子受体的亚硝酸型反硝化除磷体系,TP去除率可高出20%,但脱氮效果相对低9%.结论将电子受体浓度控制在最佳条件下,有利于反硝化脱氮除磷效果.

The experiment studied the optimal conditions and the merit of two different electron acceptor on denitrifying phosphorus removal.In two identical SBR reactor,the denitrification and phosphorous removal was investigated in denitrifying phosphorous removal process,which separately took nitrate nitrogen and nitrite nitrogen as the electron acceptor.The results indicated the process taking nitrate nitrogen as the electron acceptor is better than the nitrite nitrogen in the phosphorous removal,and higher by 20%,but worse in the nitrogen removal,and lower by 9%.It＇s better for denitrifying phosphorous removal process when the concentration of electron acceptor is controlled in optimal condition.