2015
DOI: 10.2166/wst.2015.049
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Characteristics of nitrogen and phosphorus removal by a surface-flow constructed wetland for polluted river water treatment

Abstract: The characteristics of nitrogen (N) and phosphorus (P) removal were studied during the 2-year operation of a free water surface flow wetland of 900 m² with hydraulic loading of 0.1 m/d to evaluate its potential to treat water from an urban stream polluted with municipal and industrial wastewater. Attention was focused on the removal of dissolved N and P by harvesting plants (local Phragmites australis and Typha orientalis) at the end of each growing season. According to findings, the removals of N and P increa… Show more

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Cited by 20 publications
(15 citation statements)
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“…The lower removal efficiency that have been found at autumn-winter months may also be attributed to the annual die-off of the plants that could potentially be an additional source of phosphorus release due to the biodegradation from that organic material [10,12]. Similar to concentrations, high fluctuation on average inlet loads were observed for TP and for DP throughout the all study period.…”
Section: Phosphorous Removalmentioning
confidence: 80%
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“…The lower removal efficiency that have been found at autumn-winter months may also be attributed to the annual die-off of the plants that could potentially be an additional source of phosphorus release due to the biodegradation from that organic material [10,12]. Similar to concentrations, high fluctuation on average inlet loads were observed for TP and for DP throughout the all study period.…”
Section: Phosphorous Removalmentioning
confidence: 80%
“…However, this mechanism is only one very small part of nutrient removal in these systems. In fact, in CWs, nitrogen removal is subject to a wide range of transformations that include physical, chemical and biological processes involving various mechanisms such as ammonification, nitrification with further denitrification, microbial immobilization and matrix adsorption [2,9,10]. Unlike nitrogen, which could be eliminated of the system by nitrification/denitrification, phosphorous in wastewater is usually removed by retaining in the CW system [11].…”
Section: Introductionmentioning
confidence: 99%
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“…Due to its advantages of low cost, easy maintenance, and environmental friendliness, constructed wetland (CW) has been widely used in treatment of industrial, agricultural, and municipal wastewater (Chang et al 2015;Ji et al 2012;Mulling et al 2014;Xiong et al 2015;Zhi and Ji 2014) and polluted surface water (Dzakpasu et al 2015;Tu et al 2014). Biofilm microbial community, attached to the surfaces of substrate materials (or filter media) in CW, plays crucial roles in the reduction of degradable organic pollutants and transformation of inorganic pollutants including nitrogen, sulfate, and phosphate (Iasur-Kruh et al 2010;Liu et al 2013;Ramond et al 2012).…”
Section: Introductionmentioning
confidence: 99%