Desalination of saline farmland drainage water through wetland plants

Yang, Yan; Sheng, Qiang; Zhang, L.; Kang, Hang-Won; Liu, Y.

doi:10.1016/j.agwat.2015.03.001

Cited by 28 publications

(10 citation statements)

References 11 publications

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“…In addition, desalination for irrigation discharge using wetlands has the potential for lake salinification control [103]. A study by Yang [39] showed that the amount of salt removed by harvesting reeds and cattails accounted for 10-26% of the discharged salt concentration. Thus, salinity of the western region of the lake was lower than that of the eastern region (Figure 7) which attributed to the effect of the wetland.…”

Section: Strategy For Sustainable Lake Water Management To Control Salinizationmentioning

confidence: 99%

“…In general, studies on lake salinity are either field-based [38,39] and focused on a static study modeling the watershed outlet [40], or model-based which involves complex modelling at a plot scale [41][42][43]. With the unceasing promotion of computer performance, numerical modeling integrated with field and laboratory data has proven to be an effective tool for describing the complex physical [44][45][46], chemical, and biological processes [47,48] and their interactions between state variables [49,50].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Irrigation Discharge on Salinity of a Large Freshwater Lake: A Case Study in Chagan Lake, Northeast China

Liu

Zhang

et al. 2020

Water

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The salinization of freshwater lakes by agricultural activities poses a threat to many lake ecosystems around the world. Quantitative, medium- to long-term studies are needed to understand how some common agricultural practices, such as the discharge of crop irrigation in the vicinities of large lakes, may affect lake salinization. In this study, hydrological, hydrodynamics, water quality and meteorological datasets were used to analyze the long-term spatial-temporal variations of water salinities of a major lake, the Chagan Lake, in Northeast China. An integrated hydrodynamics-salinity model was used to simulate lake water salinity changes taking place at different times and locations, including (i) salt accumulations during a non-frozen period, and (ii) the time when water salinity may reach a significant threshold (1 psu) that jeopardizes a major environmental and economic value of this lake (i.e., the cultivation of local fish species). The results confirmed that Chagan Lake was indeed undergoing salinization in the ten year period between 2008 and 2018. The spatial-temporal patterns of the salinization processes were identified. For instance, (i) the mean salinity of the lake water was found to be 0.55 psu in the summer season of the region and 0.53 psu in the winter, and (ii) between May to October the salinity was up to 0.62 psu in the western region of the lake. The rate of salt accumulation was found to be 97 ton per annum during the non-frozen period. The simulation predicted that by 2024 the lake water will become sub-saline (salinity > 1.07 psu) which is toxic to fish species, if the current practice of irrigation discharge into the lake continues. In the scenario that the amount of irrigation discharges into the lake doubles, the western region of the lake will become sub-saline within one year, and then the whole lake within three years. Overall, this study has produced results that are useful to authorities around the world, for balancing the risks and benefits of developing crop irrigation fields in areas surrounding large freshwater lakes.

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Section: Strategy For Sustainable Lake Water Management To Control Salinizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Irrigation Discharge on Salinity of a Large Freshwater Lake: A Case Study in Chagan Lake, Northeast China

Liu

Zhang

et al. 2020

Water

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“…La eficiencia de remoción de Ca 2+ , Mg 2+ , Na + Cly SO 4 2puede llegar al 80% con Typha spp. (Yang, Sheng, Zhang, Kang, & Liu, 2015).…”

Section: Flujo Subsuperficial Horizontalunclassified

“…Las macrófitas más usadas para el tratamiento de aguas residuales en sistemas tipo estanque es de dos clases principalmente: plantas acuáticas flotantes y sumergidas. Las plantas flotantes absorben el dióxido de carbono según sus necesidades de oxígeno, mientras que la vegetación sumergida se inhibe por la turbiedad (Yang et al, 2015).…”

Section: Flujo Subsuperficial Horizontalunclassified

Estado del arte: una revisión actual a los mecanismos que realizan los humedales artificiales para la remoción de nitrógeno y fósforo

Arteaga-Cortez

Nolasco

Valle-Paniagua

et al. 2019

Tecnol. cienc. agua

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El tratamiento de aguas residuales por medio de los humedales artificiales se utiliza como una tecnología verde que surge de la necesidad de replicar los beneficios ecosistémicos de los humedales naturales para tratar diversos afluentes de aguas residuales. Este trabajo presenta una revisión bibliográfica acerca de los diferentes tipos de humedales artificiales y sus procesos depurativos. Si bien existen muchos estudios sobre humedales artificiales, es necesario realizar una sinergia de dicha información. No obstante, aunque los humedales artificiales son una frecuente práctica de gestión para la mitigación de contaminantes provenientes de escorrentía agrícola y municipal, en muchos países faltan estudios comparativos sobre su eficiencia depurativa y el mantenimiento a los mismos, así como profundizar en la investigación de sustratos alternativos y detallar medidas preventivas para la evitar la colmatación del sustrato.

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“…Removing salinity or salts from irrigation waters is not impossible but may be costly or require additional land. Direct water desalinization (Kaner et al 2017), desalinization through wetland plants (Yang et al 2015), creation of desalting facilities (Marshall 1985), micro-or ultra-filtration in conjunction with reverse osmosis (Abulnour et al 2002), electrodialysis in combination with ion exchange resins and activated carbon (Abulnour et al 2002), and passing or forcing water through relatively small (e.g., 5 μm) membrane filters followed by activated charcoal filters (Ormbsy 1985) have been explored. The work described by Abulnour et al (2002) and Ormbsy (1985), focused on activated charcoal use and piqued our interest in the potential use of biochar for reducing irrigation water salinity.…”

Section: Introductionmentioning

confidence: 99%

Biochars reduce irrigation water sodium adsorption ratio

Awan

Ippolito

Ullman

et al. 2020

Biochar

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Irrigation water quality plays a vital role in sustaining crop productivity and feeding a growing world population. In many countries, continued agricultural water reuse can lead to greater water-soluble salt concentrations, and in particular Na; finding means by which irrigation water Na, and thus sodium adsorption ratios (SAR), can be reduced would reduce the rate at which soil sodification occurs. Four biochars, containing a variety of organic functional groups and electrochemistries, were examined for their potential to sorb and remove Na from simulated irrigation water, and subsequently reduce water SAR. Two batch experiments examined the role that wheat straw biochar, lodgepole pine biochar, Kentucky bluegrass biochar, and hemp biochar played in terms of sorbing sodium over time or application rate. Of the four biochars examined, hemp biochar had the lowest oxidation–reduction potential (ORP; ~ 0–100 mV), sorbed the greatest Na amount (up to 923 mg kg−1), and released Ca and Mg (up to 115 and 63 mg kg−1, respectively) into solution, all of which led to a significant reduction in water SAR (from 8.8 to 7.3; 17% decrease). Sodium sorption onto hemp biochar better fit a Langmuir versus a Freundlich isotherm, yet followed a pseudo-second-order model better than a pseudo-first-order kinetic model. The data suggest that Na ions formed a monolayer on the hemp biochar surface, influenced by associations with π electrons, but given time the Na ions may diffuse into biochar pores or more slowly interact with biochar-borne π electrons. Hemp biochar shows promise in reducing the SAR of Na-impacted waters. Future investigations should focus on additional laboratory, greenhouse, and field trials with hemp biochar and other biochars designed to have similar or superior properties for sorbing excess irrigation water Na and improving crop growth.

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Desalination of saline farmland drainage water through wetland plants

Cited by 28 publications

References 11 publications

Effects of Irrigation Discharge on Salinity of a Large Freshwater Lake: A Case Study in Chagan Lake, Northeast China

Effects of Irrigation Discharge on Salinity of a Large Freshwater Lake: A Case Study in Chagan Lake, Northeast China

Estado del arte: una revisión actual a los mecanismos que realizan los humedales artificiales para la remoción de nitrógeno y fósforo

Biochars reduce irrigation water sodium adsorption ratio

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