| 磷元素在饮用水生物处理中的限制因子作用 |
| 摘要点击 2100 全文点击 2691 投稿时间：2002-03-18 修订日期：2002-05-16 |
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| 中文关键词 饮用水 生物处理 生物滤池 限制因子 磷元素 碳元素 生物稳定性 |
| 英文关键词 drinking water biological treatment biological filter limiting factor phosphorus carbon biological stability |
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| 中文摘要 |
| 应用细菌生长潜力(BGP)法,考察了磷元素在淮河流域某地面水厂饮用水生物处理工艺中的限制因子作用原水添加50μg·L-1KH2PO4-P后,BGP可以提高54%,添加其它无机元素和添加磷元素对BGP的影响没有显著差异;原水添加20mg·L-1C6H12O6对BGP的影响要小于添加50μg·L-1KH2PO4-P的影响;原水添加磷后生物滤池对CODMn的去除率比对照生物滤池提高了7.5%,其出水明显表现为碳限制型,对照生物滤池出水则为磷限制型.结果说明磷元素是该水厂饮用水生物处理的限制因子,且限制作用强于碳元素,可以通过外加磷源的方法提高饮用水生物处理工艺对有机物的去除效率. |
| 英文摘要 |
| Bacterial Growth Potential (BGP) method was used to investigate the limiting effect of phosphorus in the biological process for drinking water treatment in a water plant in Huai River basin. BGP was increased by 54% when 50μg·L-1 KH2PO4-P was added to the raw water, while addition of other inorganic nutrients had no significant difference from the addition of phosphorus. The effect of addition of 20mg·L-1 C6H12O6 to raw water was not so strong as that of 50μg·L-1 KH2PO4-P. The CODMn removal rate of the biological filter was 7.5 percentiles higher than the control one and carbon was the main limiting nutrient in its effluent when phosphorus was added to the raw water, while phosphorus was the main limiting nutrient in the effluent of the control filter. These results suggested that phosphorus was a limiting nutrient and had a stronger limiting effect than carbon on the biological process in this plant thus the removal efficiency of the organic matters could be increased by adding phosphorus to the influent. |
