摘要：

采用一体式浸没膜生物反应器,在连续、曝气和100mg/L氨氮的条件下驯化活性污泥,发现驯化污泥对氨氮的硝化去除率可稳定在30%～50%,同时对有机物的降解率也都在80%以上;通过对比发现污泥的硝化和有机物降解作用之间有着相互抑制的关系。对比实验也证明,硝化过程产生的大量H⁺将降低体系的pH,使其稳定在5.4左右。而从3个月的运行实验看,KUBOTA的平板膜有着很好的耐污染性能,且清洗措施简单易行。

关键词: 氨氮, 膜生物反应器, 降解

Abstract:

The behavior of COD_Mn and NH₄⁺-N removal under the fairly high-strength ammonium and continuous operation conditions are investigated by a submerged MBR, The membrane supplied from KUBOTA Lit.shows better stability in filtration during the long period of operation. The removal efficiency of COD_Mn reaches over 80%, but that of NH₄⁺-N is not over 50%. T his findings may be largely responsible for the relatively lower pH value of the sludge, it is necessary to keep pH at a certain level to guarantee the nitrification activity of the sludge effectively.

Key words: high-strength ammonium, membrane bioreactor, degradation

中图分类号: 

• X703. 1