首页  |  本刊简介  |  编委会  |  投稿须知  |  订阅与联系  |  微信  |  出版道德声明  |  Ei收录本刊数据  |  封面
磷与水中细菌再生长的关系
摘要点击 1051  全文点击 1374  投稿时间：2002-07-12  修订日期：2002-09-05
查看HTML全文 查看全文  查看/发表评论  下载PDF阅读器
中文关键词  细菌再生长  磷  可同化有机碳  饮用水  生物稳定性
英文关键词  bacterial regrowth  phosphorus  assimilable organic carbon(AOC)  drinking water  biological stability
作者单位
桑军强 清华大学深圳研究生院环境工程与管理研究中心 深圳518057 
余国忠 清华大学环境科学与工程系 北京100084 
张锡辉 清华大学深圳研究生院环境工程与管理研究中心 深圳518057 
王占生 清华大学环境科学与工程系 北京100084 
中文摘要
      利用细菌再生长潜力(Bacterial Regrowth Potential,BRP)的微生物分析方法,研究了水中的磷对其生物稳定性的限制因子作用.试验测试水样为经过净水工艺处理后的出水,净水工艺处理的原水取自我国北方某水库.结果表明,在测试水样中添加50pg/L的PO43--P(NaH2PO4)后,水样的BRP增加了100%～235%.在水样中添加各种无机盐后得到的BRP同仅添加NaH2PO4得到的结果相差不大,而在水样中添加1mg/L的乙酸碳(NaAc)后BRP只增加了30%～40%,大大小于只添加磷的水样,这表明在该水样中磷是细菌生长的限制因子.本试验说明,有效地去除水中的磷可以作为限制饮用水中细菌再生长,提高饮用水生物稳定性的一个重要途径.
英文摘要
      In the experiment, a bioassay called Bacterial Regrowth Potential (BRP) was used to investigate the effect of phosphorus on bacterial regrowth in the water sample that was made from some raw water taken from a reservoir located in northern China. It was shown that BRP of water sample increased about 100%～235% when 50μg/L PO43--P (as NaH2PO4) was added alone. BRP of water sample with various inorganic nutrients (including phosphate) addition had the similar increase compared with BRP of water sample with only 50μg/L PO43--P addition and BRP of water sample with acetate-C of 1mg/L addition increased only 30%～40%. These results were clear evidence of phosphorus limitation on bacteria regrowth in the water sample investigated in the experiment. This observation offered novel possibility to restrict microbial regrowth in water distribution system by developing technologies to remove phosphorus efficiently from drinking water.

您是第52807604位访客
主办单位：中国科学院生态环境研究中心 单位地址：北京市海淀区双清路18号
电话：010－62941102 邮编：100085 E-mail： hjkx@rcees.ac.cn
本系统由北京勤云科技发展有限公司设计  京ICP备05002858号-2