序批式移动床生物膜反应器强化反硝化除磷处理低碳源污水

 为探讨反硝化除磷工艺对低碳源生活污水的处理性能,在序批式移动床生物膜反应器(SBMBBR) 中,通过对反硝化除磷菌的驯化,考察厌氧过程中COD 质量浓度、pH 值对释磷以及缺氧阶段NO₃^--N 和NO₂^--N 质量浓度对反硝化吸磷性能的影响。实验结果表明:周期为8 h 的运行中,COD、氨氮、TP 的去除率分别达到95%、90%、90%以上,出水质量浓度分别为8.07、3.67、0.46 mg/L,达到城镇污水一级A 排放标准。NO₃^--N 作为电子受体,60 mg/L 取得最佳的缺氧吸磷效果,高于20 mg/L 的NO₂^--N 作为电子受体时,反硝化除磷菌活性受到抑制。研究表明,在序批式移动床生物膜反应器中,以NO₃^--N作为电子受体进行反硝化除磷具有很好的处理效果。

Enhanced denitrifying phosphorus removal to treat low carbon source sewage in sequencing batch moving bed biofilm reactor

SBMBBR is used to investigate the performance of denitrifying phosphorus removal from the low carbon source sewage. The effects on denitrifying phosphorus removal of the COD, the pH in the anaerobic process and the NO₃^--N, NO₂^--N in the anoxic stage are studied. The results show that the removal rates of the COD, the NH4+-N, the TP are more than 95%, 90%, 90%, the effluent concentrations are 8.07, 3.67, 0.46 mg/L in the operation of a cycle of 8 h, and the urban sewage A standard is satisfied. Compared with NO₂^--N as the electron acceptor, NO₃^--N of 60 mg/L as the electron acceptor can achieve the best result of the anoxic phosphorus absorption. More than 20 mg/L of NO₂^--N will inhibit the activity of denitrifying phosphorus removal bacteria. The researches show that the denitrifying phosphorus removal can achieve good results when NO₃^--N is used as the electron acceptor in the SBMBBR.