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《Technology of Water Treatment》 2010-12
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STUDY ON THE NITROGEN REMOVAL CAPACITY OF REEDS WETLAND

Liu Qian1,Hu Chong1,Xie Bing1,Lv Baoyi1,Gu Yuxiang2(1.School of Resources and Environment Science,East China Normal University,Shanghai 200062,China; 2.Shanghai Environmental Engineering Technology Corparation,Shanghai 200070,China)  
The nitrogen removal capacity of reeds in wetland was studied,and the growth and distribution of nitrogen of the reeds were explored in this paper.The results showed that under the conditions of 0.02 m·d-1 of water loading,the reeds on wetland grew rapidly from June to August,the total biomass of reeds reached the highest in late August,which is 573.6 g·m-2.During the whole growth stages,the absorption of nitrogen in aboveground parts was significantly greater than underground parts,and total nitrogen(TN) content in aboveground parts was higher than underground parts during the same period.The aboveground nitrogen absorption had a close positive correlation with its biomass,both the maximum had occurred in later August.It can remove 19.82 g·m-2 nitrogen in the wetlands by harvesting reeds at this time,accounting for 9.28% of total nitrogen removal rate of leachate.It is suggested that it is a better method to remove the nitrogen from the wetlands by a timely reeds harvest.
【Fund】: 国家自然科学基金(20977031);; 上海市科委基金(09ZR1409000);; 上海市城市化生态过程与生态恢复重点实验室开放基金;; 中央高校基本科研业务费专项资金
【CateGory Index】: X703.1
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