Purification of landscape water by using an innovative application of subsurface flow constructed wetland

doi:10.1007/s11356-015-5265-1

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Periodical Articles > Item 310902800/30994

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/30994

Title:	Purification of landscape water by using an innovative application of subsurface flow constructed wetland
Authors:	Chyan, Jih Ming Lu, Chien Chang Shiu, Ruei Feng Bellotindos, Luzvisminda M.
Contributors:	Chia Nan Univ Pharm & Sci, Dept Environm Resources Management Chia Nan Univ Pharm & Sci, Dept Environm Sci & Engn Natl Sun Yat Sen Univ, Dept Marine Environm & Engn Univ Zamboanga, Archie Eustaquio Res Lab7000
Keywords:	Embedded subsurface flowconstructed wetlands Biochemical oxygen demand Ammonium-nitrogen Total phosphorus Suspended solids Chlorophyll-a efficiency
Date:	2016-01
Issue Date:	2018-01-18 11:39:27 (UTC+8)
Publisher:	Springer Heidelberg
Abstract:	This study attempted to purify eutrophic landscape water under a low pollutant concentration and high hydraulic volume loading using an embedded subsurface flow (SSF) constructed wetland (CW). Three species of aquatic plants (i.e., Cyperus alternifolius subsp. flabelliformis, Canna indica, and Hydrocotyle verticillata) were found to be conducive to the requirements of purifying the low-polluted water. Field results of nearly 2 years of experiments showed that SSF CW purified the eutrophic water and maintained the landscape water in a visibly clear condition. In an environment approaching the SSF CW background concentration, pollutant removal processes were divided into modulation and optimum performance periods. Average concentrations of biochemical oxygen demand (BOD), ammonium-nitrogen (NH4+-N), and total phosphorous (TP) in the optimum performance period were 0.69-1.00, 0.35-1.42, and 0.19-0.23 mg/L, respectively. Almost 500 days of BOD and NH4+-N removals were necessary to perform optimally. A shorter period, 350 days, was required for TP optimum removal. This feature of two stage removals was not found in chlorophyll-a (Chl-a) and suspended solids (SS), whose averages were 11.86-17.98 and 13.30 mu g/L, respectively. Filter cleaning and water replacement were unnecessary, while only water recharging was needed to compensate for the water lost by evapotranspiration. The field SSF CW has maintained its performance level for over 7 years.
Relation:	Environmental Science and Pollution Research, v.23 n.1, pp.535-545
Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles [Dept. of Environmental Resources Management] Periodical Articles

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