| 饮用水中磷与细菌再生长的关系 |
| 摘要点击 1335 全文点击 1320 投稿时间：2003-09-28 修订日期：2003-12-08 |
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| 中文关键词 磷限制作用 潜在AOC(AOCpotential) 微生物可利用磷 细菌再生长 |
| 英文关键词 phosphorus limitation AOCpotential microbially available phosphorus(MAP) bacterial regrowth |
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| 中文摘要 |
| 采用改进的可同化有机碳(AOC)和微生物可利用磷(MAP)方法,针对T市J水厂水源水、处理工艺以及一条配水干管中磷对细菌生长的限制作用进行了研究.结果表明:①水源水与处理工艺中MAP较高(5～38μg/L),配水管网中MAP较低(<5μg/L),且管网水中的MAP随着管线的延长基本保持不变.②常规处理工艺能够有效地去除水中的MAP(去除率为34.0%～83.7%).③在水源水和处理工艺中,水样的AOCpotential<、sub>、AOCP与AOCnative没有显著差别,说明AOC是微生物生长繁殖的决定因素.该研究配水干管中,水样的AOCpotential、AOCP为AOCnative的2～8.7倍,磷成为细菌再生长的限制因子.
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| 英文摘要 |
| Limitation of phosphorus on bacterial regrowth was studied in source water, water treatment process and a main distribution pipe of J waterwork in T city, by modified assimilable organic carbon(AOC) method and microbially available phosphorus(MAP) analysis. Based on the study, the result showed that: ①Concentration of MAP was higher in source water and water treatment process, which was 5～38μg/L(PO43--P). However in water distribution system, concentration of MAP was lower, which was less than 5μg/L(PO43--P). It changed very little in distribution system.②Traditional treatment process can remove MAP efficiently 34.0%～83.7% of MAP can be removed in the process. ③ Generally in source water and water treatment process, there was no evident difference between AOCpotential , AOCP and AOCnative . So AOC was the most important factor of bacterial growth. In the main distribution pipe, the concentration of AOCpotential and AOCP were 2～8.7 times of the concentration of AOCnative . So phosphorus limited bacterial regrowth. |
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