| 自来水厂除锰滤砂的催化活性分析 |
| 摘要点击 929 全文点击 2318 投稿时间：1996-06-25 |
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| 中文关键词 地下水 Mn2+ 微生物 化学因素 滤砂 |
| 英文关键词 groundwater Mn2+ bacteria chemical factors filter sand |
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| 中文摘要 |
| 研究来自我国东北2个自来水厂的除锰滤砂对Mn2+的催化活性,以确定微生物在除锰过程中的作用。利用PYCM培养基可在每g湿砂上计到105-106个细菌,其中有40%-50%具有Mn2+氧化能力。对滤砂表面的微生物进行原位培养,灭菌和HgCl2抑制,表明微生物群落的存在与稳定对于活性表面的存在与稳定是至关重要的。当生物活性被抑制后,锰砂残余活性约为原活性的20%.这部分活性可能来源于化学催化。微生物是除锰滤砂活性的主要来源 |
| 英文摘要 |
| The Mn2+ removing activity of the filter sand from 2 Chinese Water Plants was analyzed to determine the role of the bacteria in the Mn2+ removing Procession. Enumeration of bacteria on PYCM medium showed that there were 10 5-10 6 bacteria per g wet sand and about 40%-50% of the colonies had the ability to oxidize Mn2+.By the in situ enrichment of the bacteria, sterilization and the HgCl2 inhibition of the mature sand, it was found that bacteria were indispensable to the maintenance of the activity of the sand. When the bacterial activity was inhibited,the activity of the sand was reduced to 20% of the original one. The remaining activity might be due to the chemical catalysis. Bacteria were the major source of the Mn2+ removing activity of the filters. |
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