Effect of Solar Aeration Technology on Water Treatment of Polluted Urban River


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    		Views: (2003)   Date: (Publication Date: 16-18 May 20...)   Pages: ()

  • Author:  Zhen Wei Yan Wang Yuanlong Zhu Lei Zhang Liqin Zhu Coll. of Hydrol. & Water Resources  Hohai Univ.  Nanjing;  

  • Abstract:  Abstract After the application of aeration devices using solar energy in a polluted urban river for about one year, DO (dissolved oxygen) concentrations increased from 2.3 mg/L to 5.2 mg/L. Aeration accelerated the decomposition of pollutants and resulted in a removal rate of 52% COD (chemical oxygen demand), 54% NH3-N, 44% TN (total nitrogen) and 28% TP (total phosphorous) from the river. It was evident that solar aeration devices played a significant role on purifying pollutants especially organic matters and NH3-N in seriously polluted rivers with low velocity. Also, aeration had control algae bloom by decreasing nutrients amount and improving water exchange ability.

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