Effects of livestock wastewater variety and disinfectants on the performance of constructed wetlands in organic matters and nitrogen removal

Hu, Yuansheng; Kumar, J. L. G.; Akintunde, Adeyinka Oye; Zhao, Xiaohong; Zhao, Yaqian

doi:10.1007/s11356-011-0507-3

Cited by 14 publications

(8 citation statements)

References 25 publications

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“…Compared with the wastewater discharge or reuse standards in China, the TN and P are the most difficult organic pollutants to be removed. The special design of two-stage vertical flow CW achieved the treatment of wastewater under multiple aerobic, anoxic, and anaerobic conditions sequentially in different heights of the CW unit, which could promote the NO 2 -N and NO 3 -N conversion ability to N 2 for the organic-rich wastewater leading to higher TN removal rates [24]. In our experiments, we applied rice husk as one of several substrate materials in CW.…”

Section: Purifying Effect On the Phosphorusmentioning

confidence: 99%

Polishing of Secondary Effluent by a Two-Stage Vertical-Flow Constructed Wetland

Zhang¹,

Tan²,

Li³

et al. 2015

Pol. J. Environ. Stud.

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Section: Purifying Effect On the Phosphorusmentioning

confidence: 99%

Polishing of Secondary Effluent by a Two-Stage Vertical-Flow Constructed Wetland

Zhang¹,

Tan²,

Li³

et al. 2015

Pol. J. Environ. Stud.

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“…In this respect, Hunt et al [8] have found denitrification activity around Sc (30 -167 mg N 2 O g soil h ¡1 ) and Ta (5 -75 mg N 2 O g soil h ¡1 ) to C N ¡1 ratios with only C N ¡1 below 25. Additionally, Hu et al [36] mentions that denitrification in CW fed with livestock wastewater is affected also by the recalcitrance (BOD 5 COD ¡1 < 0.3) of effluents stored for more than 2 months. Soil phosphorus had less mobility than nitrogen, so it maintained about 68% into first 5 cm of soil and bounded to Fe-Mn oxides.…”

mentioning

confidence: 99%

Nitrogen and phosphorus distribution in a constructed wetland fed with treated swine slurry from an anaerobic lagoon

Villamar

Rivera

Neubauer

et al. 2014

Journal of Environmental Science and Health, Part A

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Nitrogen and phosphorus distribution in a constructed wetland fed with treated swine slurry from an anaerobic lagoon were studied. The methodology considered a daily meteorological monitoring site. During 2011 to 2012, water, soil and plants (Schoenoplectus californicus (C.A. Méyer) Sójak, Typha angustifolia (L.)) were seasonally sampled (spring and fall) into the constructed wetland. During study period, results showed that rainfall was the main factor of maintenance hydraulic conditions, while evapotranspiration was driver of variations in water storage level. Nitrogen and phosphorus removal from the water phase were up to 54% and 37%, respectively. Onto soil were adsorbed over 70% nitrogen and 65% phosphorus. Phosphorus was less mobile than nitrogen, since it was bound to oxides Fe-Mn. Inorganic nitrogen species were affected by level water and seasonal vegetable maturation. During spring, N-NH4(+) was the predominant soil species, while in the fall, N-NO3(-) was dominant near the belowground part of Sc and NH4(+) near to the belowground zone of Ta. In addition, nutrients uptake was less than 30% with 64% aboveground-spring and 85% belowground-fall for both plants. Findings showed nitrification process evidences when water levels are below 0.1 m.

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“…In constructed wetland systems, dissolved organic matter in wastewater is adsorbed and assimilated by the biological membrane of the plant root systems, and then resolved and removed through biological degradation processes. The undissolvable organic matter, on the other hand, is retained in the wetland after sedimentation and filtration [9] . The COD removal rate was lower for high wastewater concentrations because the concentrated wastewater impairs the organic matter adsorbing capacity of the wetland plants.…”

Section: Cod Purifying Effect In Different Concentrations Of Livestock Wastewatermentioning

confidence: 99%

Purification of Livestock Wastewater by a Constructed Wetland and Physiological Responses of Wetland Plants to Wastewater Stressors

Zhang¹,

Chen²

2018

dteees

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A wetland containing canna, calamus, wild water chestnut and Hydrilla verticillata was constructed to measure wastewater purification efficiency and effects of livestock wastewater on the physiology of the wetland plants. The results showed that the highest removal efficiencies of the same three contaminants among all four wastewater concentration treatments were 96.42%, 91.09%, 79.07% respectively. Tolerance of livestock wastewater was greatest for canna, followed by calamus, and then wild water chestnut, whereas Hydrilla verticillata was least tolerant of the livestock wastewater treatments.

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Effects of livestock wastewater variety and disinfectants on the performance of constructed wetlands in organic matters and nitrogen removal

Abstract: 12Background, aim and scope Treatment performance of constructed wetlands (CWs) is largely dependent on the

Cited by 14 publications

References 25 publications

Polishing of Secondary Effluent by a Two-Stage Vertical-Flow Constructed Wetland

Polishing of Secondary Effluent by a Two-Stage Vertical-Flow Constructed Wetland

Nitrogen and phosphorus distribution in a constructed wetland fed with treated swine slurry from an anaerobic lagoon

Purification of Livestock Wastewater by a Constructed Wetland and Physiological Responses of Wetland Plants to Wastewater Stressors

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