HMBR反应器处理高浓度氨氮废水影响因素研究

Research on the impact factors in the treatment of the high strength ammonian wastewater by the hybrid membrane bioreactor

实验讨论了在以甲壳素为载体的复合式膜生物反应器中,有机负荷、溶解氧、pH值、碱度等因素对氨氮废水硝化反应的影响,确定了系统运行的最佳条件。实验结果表明,进水氨氮质量浓度为500 mg/L,运行条件满足COD/NH4^＋-N≤0.6,DO≥4.0 mg/L,pH=7.78-8.33,碱度/NH4^＋-N≥8.0时,氨氮去除率接近100%。

This article discusses some related factors in ammonian wastewater treatment by hybrid membrane bioreactor using chitin as carrier, such as organics loading, dissolved oxygen, pH value, and alkalinity,determining the optimal conditions run as a nitrifying reactor. The removing rate of ammonium can almost achieve 100%,while the influent ammonia concentration is 500 mg/L,COD/NH4^＋ -N is less than 0.6,DO is more than 4.0 mg/L,pH value is between 7.78 and 8.33,and alkalinity/NH4^＋ N is more than 8.0.