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《Acta Scientiae Circumstantiae》 2003-03
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Organic matter of various molecular weight fractions in source water

LI Shuang 1, ZHANG Xiaojian 1,FAN Xiaojun 2, LAO Wai Mom 2, WONG Hou 2 (1.Department of Environmental Science and Engineering in Tsinghua University, Beijing 100084;2.The Macao Water Supply Company Ltd.)  
Organic matter has been measured in the Macao source waters. The total organic carbon (TOC) and biodegradable dissolved organic carbon (BDOC) measurements have been done on ultrafiltrated (molecular weight (MW) cut-off of 1000, 3000, 10000 and 100000) samples. The results showed: (1) The fractions of the organics with MW1000 corresponded to 48%—64% of the TOC, therefore, the traditional treatment process cannot remove the organics effectively. (2) The BDOC in Macao raw waters was mainly related to the NOM with MW 10000. (3) The BDOC/TOC in the various MW fratinos varied considerably, indicating that the treatment process which can control TOC, may not be able to remove BDOC effectively. (4) The organic content in Macao source water is so low that no additional treatment process is needed.
【Fund】: 清华大学与澳门自来水公司科技合作项目——澳门管网生物稳定性的研究 (2 0 0 1 2 0 0 2 )
【CateGory Index】: X832
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