Mathematical analysis methods and suggestions on algae proliferation potential in main canal of Middle Route of South-to-North Water Transfer Project
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Abstract:
Addressing the algal proliferation risk in the Middle Route of the South-to-North Water Transfer Project,the trend of the accumulation of nutrients is estimated for the entire Middle Route by applying the Vollenweider model and assuming nitrogen and phosphorus nutrients and the atmospheric deposition of algae spores as the source of sinking and averaging nitrogen deposition in Henan,Shandong and Beijing-Tianjin-Hebei regions and phosphorus deposition of the whole country.The results show that the cumulative concentration of nutrients in the canal exceeds the eutrophication threshold at Sanlitun monitoring point and beyond.Taking into account the effects of algae spore settlement in the atmosphere,the [JP]reported spatial distribution of algae is fitted by coupling with the Monod model.In the main canal of the Middle Route,algae grow at the rate of 0.21/d~0.46/d,with the relative median error of 23.71%.Based on the results achieved,a monitoring scheme is proposed to improve the accuracy of algal bloom forecasting.
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