EFFECT OF STUBBLE HEIGHTS AND TREATMENT DURATION TIME ON THE PERFORMANCE OF WATER DROPWORT FLOATING TREATMENT WETLANDS (FTWS)

被引：19

作者：

Xin, Zai-jun ^{[1
]}

Li, Xiu-zhen ^{[1
]}

Nielsen, Soren Nors ^{[2
]}

Yan, Zhong-zheng ^{[1
]}

Zhou, Yuan-qing ^{[1
]}

Jia, Yue ^{[1
]}

Tang, Ying-ying ^{[1
]}

Guo, Wen-yong ^{[1
]}

Sun, Yong-guang ^{[1
]}

机构：

[1] E China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China

[2] Univ Copenhagen, Fac Pharmaceut Sci, DK-2100 Copenhagen, Denmark

来源：

ECOLOGICAL CHEMISTRY AND ENGINEERING S-CHEMIA I INZYNIERIA EKOLOGICZNA S | 2012年 / 19卷 / 03期

关键词：

floating treatment wetland (FTW); nutrients; removal rate; Water Dropwort; Oenanthe [!text type='java']java[!/text]nica; WASTE-WATER; NUTRIENT REMOVAL; PURIFICATION; NITROGEN; RUNOFF; RIVER;

D O I：

10.2478/v10216-011-0023-x

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Floating treatment wetlands (FTWs) with Water Dropwort (Oenanthe javanica) were established in winter to investigate their potential role in the purification of eutrophicated water, and to identify the effects of different stubble heights of the Water Dropwort on the performance of the FTWs. The results of the experiments demonstrated: The Water Dropwort FTWs were effective in buffering the pH of the experimental water. The Water Dropwort FTWs were efficient in purifying eutrophicated water, with removal rate for total nitrogen (TN), total phosphorus (TP), ammonium nitrogen (NH4+ - N), and nitrate nitrogen (NO3- - N) at 91.3, 58.0, 94.6, and 95.5% in the 15-day experiment, respectively. No significant difference in the purification effect was found among different stubble heights of Water Dropwort FTWs. Significant differences between the zero control and the FTWs were found for the removal of TP in the first 11 days; and for the removal of NH4+ - N in the first 4 days. No significant difference was found between the zero control and the FTWs for NO3- - N in the first 4 days, but significant difference was detected after day 4. The optimum treatment duration time for the FTWs with Water Dropwort will depend on the nutrients to be removed. These results will provide basis for further application of the FTWs at large scale, as well as for future studies on the mechanism of nutrient removal process.

引用

页码：315 / 330

页数：16

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