电极-SBBR对污水的脱氮效应研究

将电极生物膜法(BER)与序批式生物膜法(SBBR)结合以实现两种技术的优势互补,通过处理人工模拟废水,探讨了电极-SBBR工艺参数中电流强度(IA)、溶解氧质量浓度(cDO)及进水碳氮比对脱氮去除效果的影响.结果表明,在电化学与生物化学的协同作用下,体系的同步硝化反硝化作用得到了加强,取得了较好的脱氮效果,总氮(TN)的平均去除效率可达72.5%.优化运行参数:当IA为80mA,溶解氧质量浓度为3～5mg/L,碳氮比为6左右时,TN的平均去除率可达80%以上.

Denitrification from Sewage by Electrode-SBBR

Through integrating the advantages of two methods including biofilm-electrode reactor(BER) and sequencing batch biofilm reactor(SBBR).This experiment was operated to treat simulative sewage.The effects of applied electric current,dissolved oxygen concentration and carbon and nitrogen ratio of the pertinent parameters of electrode-SBBR on the removal of nitrogen were respectively discussed in this paper.The experimental results showed that:It was proved very efficient for nitrification and denitrification under the synergistic action of the electrochemical and biological chemistry,electrode-SBBR have strong ability of removal of nitrogen denification,The maximum total nitrogen(TN)removal rate was 72.5%.At optimum operating parameters,electric current was 80 mA,DO was 3.0-5.0 mg/L and carbon and nitrogen ratio was about 6.In summeary,the removal efficiency of TN was greater than 80%.