Efficiency and mechanism of pretreatment on water supply in reservoirs of Yellow River by subsurface constructed wetlands
YANG Xu1,2, YU Shui-li1, ZHAO Yan1, YAN Xiao-ju1, XIU Chun-hai1, WANG Dong-guang1
1.School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China;2.School of Geography Science,Harbin Normal University,Harbin 150025,China
Abstract:
In order to improve the source water quality of drinking water and mitigate the load of drinking water treatment plant,a pilot test was conducted with integrated horizontal flow constructed wetlands to pretreat the water supply in the reservoirs of Yellow River.Results show that under the hydraulic loading rate of 4 m3/(m2·d),the average removal rates of chemical oxygen demand (COD),total nitrogen (TN),ammonium nitrogen(NH4+-N),nitrate nitrogen (NO3--N),nitrite-nitrogen (NO2--N) and total phosphorus (TP) in the horizontal flow constructed wetlands are 49.68%,53.01%,48.48%,53.61%,62.57% and 49.56%,respectively.The study on purifying mechanism of the constructed wetlands indicates that the disposal of contamination by subsurface wetlands is the combined actions of physical chemistry,plants and microorganism.
Key words: constructed wetland water supply in reservoirs of Yellow River pretreatment efficiency and mechanism
DOI：10.11916/j.issn.1005-9113.2009.05.011
Clc Number:X703
Fund:
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Efficiency and mechanism of pretreatment on water supply in reservoirs of Yellow River by subsurface
本站小编 哈尔滨工业大学/2019-10-23
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