An integrated constructed wetland to treat contaminants and nutrients from dairy farmyard dirty water

Dunne, E. J.; Culleton, N.; O’Donovan, Grace; Harrington, Rory; Olsen, A. E.

doi:10.1016/j.ecoleng.2004.11.010

Cited by 110 publications

(49 citation statements)

References 39 publications

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“…Although full documentation of the effectiveness of the constructed wetlands based on several years monitoring has not been done, Kjaergaard and Hoffmann (2010) indicate that constructed wetlands have a higher nitrogen removal per acreage compared to natural wetlands. The efficiency of the constructed wetlands is however dependent on local conditions such as design and size of the wetland, size of the drainage catchment, soil type, nutrient loadings, hydrological conditions, season, biological activities, and management (Dunne et al 2005;Kadlec et al 2000;Scholz and Lee 2005;Woltemade 2000).…”

Section: Introductionmentioning

confidence: 98%

“…The constructed wetland systems are seen as potential low-cost and effective measures for improvement of water quality in recipient water bodies and have been employed extensively in countries such as the USA, Norway, Sweden, Italy, New Zealand, and the UK. (Dunne et al 2005;Scholz et al 2007;Schoumans et al 2014;Smith et al 2006;Tanner et al 2005;Wood et al 2008).…”

Section: Introductionmentioning

confidence: 98%

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Cost-Effectiveness Analysis of Surface Flow Constructed Wetlands (SFCW) for Nutrient Reduction in Drainage Discharge from Agricultural Fields in Denmark

Gachango

Pedersen

Kjærgaard

2015

Environmental Management

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Constructed wetlands have been proposed as cost-effective and more targeted technologies in the reduction of nitrogen and phosphorous water pollution in drainage losses from agricultural fields in Denmark. Using two pig farms and one dairy farm situated in a pumped lowland catchment as case studies, this paper explores the feasibility of implementing surface flow constructed wetlands (SFCW) based on their cost effectiveness. Sensitivity analysis is conducted by varying the cost elements of the wetlands in order to establish the most cost-effective scenario and a comparison with the existing nutrients reduction measures carried out. The analyses show that the cost effectiveness of the SFCW is higher in the drainage catchments with higher nutrient loads. The range of the cost effectiveness ratio on nitrogen reduction differs distinctively with that of catch crop measure. The study concludes that SFCW could be a better optimal nutrients reduction measure in drainage catchments characterized with higher nutrient loads.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Cost-Effectiveness Analysis of Surface Flow Constructed Wetlands (SFCW) for Nutrient Reduction in Drainage Discharge from Agricultural Fields in Denmark

Gachango

Pedersen

Kjærgaard

2015

Environmental Management

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“…Typical nitrogen removal mechanisms known to involve in FWS CW and affected by pH, dissolved oxygen (DO) and water temperature include ammonification, denitrification, and nitrification while sorption, precipitation and plant uptake are the major phosphorus removal processes (Vymazal, 2007). CW performance may vary with site location, wastewater characteristics, wetland design and application (Dunne et al, 2005). Also, behavior of nutrients along the flow path varies in every wetland.…”

Section: Introductionmentioning

confidence: 99%

Evaluation on the nutrient concentration changes along the flow path of a free surface flow constructed wetland in agricultural area

Mercado

Maniquiz-Redillas

Kim

2013

Journal of Wetlands Research

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In this study, the nutrient concentration changes along the hydrologic flow path of a free water surface flow constructed wetland (CW) treating agricultural stream runoff was investigated. Dry sampling was performed from April 2009 to November 2011 at five locations representing each treatment units of the CW. Grab water samples were analyzed for nitrogen forms such as total nitrogen (TN), total Kjeldahl nitrogen, nitrate, and ammonium; and phosphorus forms including total phosphorus (TP) and phosphate. Findings revealed that the physical properties such as temperature, dissolved oxygen and pH affected the TP retention in the CW. High nutrient reduction was observed after passing the first sedimentation zone indicating the importance of settling process in the retention of nutrients. However, it was until the 85% of the length of the CW where nutrient retention was greatest indicating the deposition of nutrients at the alternating shallow and deep marshes. TN and TP concentration seemed to increase at the final sedimentation zone (FSZ) suggesting a possible nutrient source in this segment of the CW. It was therefore recommended to reduce or possibly remove the FSZ in the CW for an optimum performance, smaller spatial allocation and lesser construction expenses for similar systems.

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“…Being an ecological wastewater treatment technology, constructed wetland (CW) was very practical with the low cost and easy management [7]. Its high removal rates for nitrogen and phosphorus were assumed to make up for the shortcoming of MBR [8,9]. Hence, the combined technology of MBR and CW, which was applied to treat the high concentration wastewater, may be a good try.…”

Section: Introductionmentioning

confidence: 99%

Performance of the combined SMBR–IVCW system for wastewater treatment

Xiao

Liang

et al. 2010

Desalination

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An integrated constructed wetland to treat contaminants and nutrients from dairy farmyard dirty water

Cited by 110 publications

References 39 publications

Cost-Effectiveness Analysis of Surface Flow Constructed Wetlands (SFCW) for Nutrient Reduction in Drainage Discharge from Agricultural Fields in Denmark

Cost-Effectiveness Analysis of Surface Flow Constructed Wetlands (SFCW) for Nutrient Reduction in Drainage Discharge from Agricultural Fields in Denmark

Evaluation on the nutrient concentration changes along the flow path of a free surface flow constructed wetland in agricultural area

Performance of the combined SMBR–IVCW system for wastewater treatment

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