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将二级生物除铁除锰工艺改造成一级生物除铁除锰工艺,能够使出水水质达到国家标准,为了对其原理进行研究,采用X射线光电子能谱分析技术对稳定运行的滤池中锰砂表面成分进行了分析。结果表明,滤池80 cm处锰砂表面的锰氧化物浓度明显增加,而铁氧化物浓度没有明显增加,说明在贫氧状态和低Fe2+浓度下,锰离子是通过微生物的作用被氧化成高价态锰氧化物,从而使出水中锰浓度降低。模拟试验结果进一步表明,这种低浓度的Fe2+对于锰氧化菌的活性具有重要作用。
The secondary biological iron and manganese removal process into a biological removal of iron and manganese removal process, can make the effluent quality to meet national standards, in order to study its principles, the use of X-ray photoelectron spectroscopy analysis of the stable operation of manganese Sand surface composition was analyzed. The results showed that the manganese oxide concentration on the manganese sand surface increased obviously at the depth of 80 cm, while the iron oxide concentration did not increase obviously, indicating that the manganese ions were oxidized to high value under the condition of low oxygen concentration and low Fe2 + concentration Manganese oxide, so that the effluent manganese concentration decreased. The simulation results further show that this low concentration of Fe2 + plays an important role for the activity of manganese oxidizing bacteria.