RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2004, Vol. 13 >> Issue (3): 282-285.

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MECHANISMS FOR HYDROLOGICAL FACTORS CAUSING ALGAL BLOOMS IN HANJING RIVER——BASED ON KINETICS OF ALGAE GROWTH

WANG Hong-ping(1)，XIA Jun(2,3)，XIE Ping(3)，DOU Ming(3)   

  • Received:1900-01-01 Revised:1900-01-01 Online:2004-05-20
  • Contact: WANG Hong-ping

Abstract: Mechanisms for hydrological factors causing algal bloom in Hanjiang River are studied. First, the hydrological factors relative to algal bloom in Hanjiang River and their relation are generalized. Then the river continuous reactor model for algae growth is created and moreover mathematics model describing relation between concentration of algal and flow velocity is built up according to continuous reactor principle and Monod Function—— a = m exp(k/ν ). Parameters in this model are determined by measuring data in Hanjiang River—m=8.975 9、k=0.905 4，the relative coefficient r=0.924 4. In the end, the influence of flow velocity, flux and water level of the Changjiang River is discussed. In addition, the model is extensively adaptive to eutrophic rivers and it can be studied progressively because the parameters have clear physical signification.

Key words: continuous reactor, algal bloom, Hanjiang River, hydrological factors, Monod Function

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