| 自来水厂细菌固定化除锰及其水质条件的研究 |
| 摘要点击 984 全文点击 1551 投稿时间：1997-08-13 |
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| 中文关键词 细菌 固定化 除锰 水质 |
| 英文关键词 bacteria immobilization Mn2+ removal water quality |
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| 中文摘要 |
| 对自来水厂除锰细菌的3种固定化途径进行了实验分析,表明生态平衡的自然固定化能够在短期内高效、稳定地除锰,通过控制运行参数和水质,把滤柱的除锰成熟期缩短为50d.单一菌种的戊二醛交联法固定效果快(2-7d),但除锰时间短；用人工培养基固定混合菌种时发现了“漏锰”现象,探讨了它的机理。对影响细菌除锰和固定化的水质因素,如pH、Fe2+、Mn2+、O2、CO2、滤速、反冲洗强度、过滤周期等因素进行了实验测试并得到合适的指标,为生产上的应用提供了重要的实验依据。 |
| 英文摘要 |
| The three methods of immobilized Mn2+-removal bacteria from groundwater were analyzed in this paper.It was showed that bacteria in the water immobilized on the sand themselves by elutig the sand column with groundwater.After matura immobilization for 50 days the sand column could remove Mn2+ effectively and stably.A strain of bacteria,which is isolated from the mature sand,is crosslinked by getutaraldehyde for 2—7 days.The sand with the immobilized a strain of bacteria could remove Mn2+ from water over two weeks.It was found that the sand column is leaked manganese in the immobilization of the mixed bacteria enriched from the mature sand in different mediums.Dissolved O2 and CO2 in the water,pH,Fe2+,Mn2+ ,filtrating velocity and period,the strength of back-wash are critical to the immobilization,and thus,the Mn2+ removal of the filters. |
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