RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2006, Vol. 15 >> Issue (2): 232-236.

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WATER QUALITY IMPROVEMENT BASED ON THE PHYSICECOLOGICAL ENCLOSURE MEASUREMENT IN MEILIANG BAY, LAKE TAIHU

SHI Long-xin, ZHANG Yun-lin, QIN Bo-qiang   

  • Received:2005-05-16 Revised:2005-08-03 Online:2006-03-20
  • Contact: QIN Bo-qiang

Abstract: The spatialtemporal distribution of water quality was assessed based on the data from December in 2003 to November in 2004 obtained in Meiliang Bay drinking water purification demonstration enclosure in Lake Taihu. The background values of main water quality indexes including transparency, total nitrogen, ammonia nitrogen, total phosphorus, chlorophyll a, exceed environmental quality standards for surface water of type three and the demonstration zone belongs to eutrophication. Water quality of demonstration zone was improved obviously after the implement action of technical measures. Mean values of dissolved oxygen during the period from December of 2003 to November of 2004 increased 34%, in contrast to the background value in August of 2003. Transparency improved from 0.29 to 0.35 m, with 21% increase.

Key words: Lake Taihu, enclosure, water quality, transparency

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