Effect of Stubble Heights and Treatment Duration Time on the Performance of Water Dropwort Floating Treatment Wetlands (FTWS)

• Authors: Zai-jun Xin , Xiu-zhen Li , Søren Nielsen , Zhong-zheng Yan , Yuan-qing Zhou , Yue Jia , Ying-ying Tang , Wen-yong Guo , Yong-guang Sun
• Languages of publication: EN

Abstracts

EN

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.

PL

Badano proces oczyszczania wód z wykorzystaniem ruchomych mokradeł (FTW) obsadzonych Oenanthe javanica. Celem prowadzonych w zimie badań była ocena ich potencjalnej roli w oczyszczaniu wód zeutrofizowanych oraz określenie wpływu różnych wysokości ściernisk roślinnych na wydajność procesu. Wyniki eksperymentów wykazały, że systemy FTW skutecznie buforowały pH badanej wody. Za pomocą FTW ze zeutrofizowanej wody usunięto azot ogólny (TN), fosfor ogólny (TP), azot amonowy (NH4+ - N) i azot azotanowy (NH3- - N) odpowiednio w ilościach: 91,3, 58,0, 94,6 i 95,5%, w czasie trwania 15-dniowego eksperymentu. Nie wykazano istotnych różnic w efekcie oczyszczania przy stosowaniu różnych wysokości ściernisk roślinnych. Stwierdzono wpływ czasu prowadzenia eksperymentu na usuwanie TP, którego usunięto najwięcej w pierwszych 11 dniach, a NH4+ - N w ciągu pierwszych 4 dni trwania procesu. Nie stwierdzono istotnej różnicy między kontrolą i FTW dla NH3- - N w ciągu pierwszych kilku dni, ale znacząca różnica pojawiła się po 4 dniu. Optymalny czas trwania procesu z wykorzystaniem FTW zależy od składników odżywczych, które mają być usunięte. Opisane wyniki stanowią podstawę zarówno do rozwinięcia zastosowania FTW na dużą skalę, jak i dla przyszłych badań nad mechanizmem procesu usuwania składników odżywczych.

Keywords

EN

floating treatment wetland (FTW); nutrients; removal rate; Water Dropwort; Oenanthe javanica

PL

oczyszczanie ruchomymi mokradłami; FTW; składniki odżywcze; szybkość usuwania; Oenanthe javanica

• Publisher: De Gruyter Open
• Journal: Ecological Chemistry and Engineering S
• Year: 2012
• Volume: 19
• Issue: 3
• Pages: 315-330

Dates

published

1 - 1 - 2012

online

16 - 7 - 2012

Contributors

author

Zai-jun Xin

• State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

author

Xiu-zhen Li

• State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

author

Søren Nielsen

• Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark

author

Zhong-zheng Yan

• State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

author

Yuan-qing Zhou

• State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

author

Yue Jia

• State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

author

Ying-ying Tang

• State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

author

Wen-yong Guo

• State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

author

Yong-guang Sun

• State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

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Identifiers

DOI

10.2478/v10216-011-0023-x