Linking water quality changes to geochemical processes occurring in a reactive soil column during treated wastewater infiltration using a large-scale pilot experiment: Insights into Mn behavior

Ollivier, Patrick; Surdyk, Nicolas; Azaroual, Mohamed; Besnard, Katia; Casanova, Joël; Rampnoux, Nicolas

doi:10.1016/j.chemgeo.2013.07.023

Cited by 19 publications

(20 citation statements)

References 80 publications

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“…It was the result of the accumulation of suspended particles in subsurface soil, causing a decrease of the saturated hydraulic conductivity. This decrease of infiltration velocity is consistent with those reported by the authors of [39] during infiltration of TWW in a 3 m diameter column. The decrease of infiltration rates from 3.3 to 0.08 cm/h was due to the development of a clogging in the uppermost layer.…”

Section: Sensitivity Testssupporting

confidence: 92%

Assessing Aquifer Water Level and Salinity for a Managed Artificial Recharge Site Using Reclaimed Water

Horriche

Benabdallah

2020

Water

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This study was carried out to examine the impact of an artificial recharge site on groundwater level and salinity using treated domestic wastewater for the Korba aquifer (north eastern Tunisia). The site is located in a semi-arid region affected by seawater intrusion, inducing an increase in groundwater salinity. Investigation of the subsurface enabled the identification of suitable areas for aquifer recharge mainly composed of sand formations. Groundwater flow and solute transport models (MODFLOW and MT3DMS) were then setup and calibrated for steady and transient states from 1971 to 2005 and used to assess the impact of the artificial recharge site. Results showed that artificial recharge, with a rate of 1500 m 3 /day and a salinity of 3.3 g/L, could produce a recovery in groundwater level by up to 2.7 m and a reduction in groundwater salinity by as much as 5.7 g/L over an extended simulation period. Groundwater monitoring for 2007-2014, used for model validation, allowed one to confirm that the effective recharge, reaching the water table, is less than the planned values.

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Section: Sensitivity Testssupporting

confidence: 92%

Assessing Aquifer Water Level and Salinity for a Managed Artificial Recharge Site Using Reclaimed Water

Horriche

Benabdallah

2020

Water

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“…This also accelerated the reducing environment in the groundwater, providing good conditions for iron and manganese reduction reactions, and producing a larger blue-colored area with the highest score in the center. The specific reactions are as follows [ 50 , 51 ]: Fe (OH) 3 + 3H + + e − = Fe 2+ + 3H 2 O; CH 2 O + Fe 2 O 3 + 2H + = 2Fe 2+ + CO 2 + 2H 2 O; CH 2 O + 2MnO 2 + 3H + = 2Mn 2+ + HCO 3 − +2 H 2 O; CH 2 O + 4Fe (OH) 3 + 7H + = 4Fe 2+ + HCO 3 − + 10H 2 O …”

Section: Resultsmentioning

confidence: 99%

Seasonal and Spatial Variability of Anthropogenic and Natural Factors Influencing Groundwater Quality Based on Source Apportionment

Guo

Zuo

et al. 2018

IJERPH

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Globally, groundwater resources are being deteriorated by rapid social development. Thus, there is an urgent need to assess the combined impacts of natural and enhanced anthropogenic sources on groundwater chemistry. The aim of this study was to identify seasonal characteristics and spatial variations in anthropogenic and natural effects, to improve the understanding of major hydrogeochemical processes based on source apportionment. 34 groundwater points located in a riverside groundwater resource area in northeast China were sampled during the wet and dry seasons in 2015. Using principal component analysis and factor analysis, 4 principal components (PCs) were extracted from 16 groundwater parameters. Three of the PCs were water-rock interaction (PC1), geogenic Fe and Mn (PC2), and agricultural pollution (PC3). A remarkable difference (PC4) was organic pollution originating from negative anthropogenic effects during the wet season, and geogenic F enrichment during the dry season. Groundwater exploitation resulted in dramatic depression cone with higher hydraulic gradient around the water source area. It not only intensified dissolution of calcite, dolomite, gypsum, Fe, Mn and fluorine minerals, but also induced more surface water recharge for the water source area. The spatial distribution of the PCs also suggested the center of the study area was extremely vulnerable to contamination by Fe, Mn, COD, and F−.

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“…Additionally, as MAR adoption increases, projects are expanding to use more diverse sources of recharge water, some of which have not been rigorously studied. For example, use of reclaimed wastewater − for MAR has grown recently, including deep injection of highly treated, purified recycled wastewater, − and there is growing interest in using alternative sources of recharge water, including treated, produced water from oil and gas development. − Additionally, MAR has evolved to include diverse methods of recharge, including multiple partially penetrating wells for addressing buoyancy issues during injection in brackish aquifers, , injection wells for aquifer thermal energy storage, − and wintertime infiltration of excess floodwater on agricultural lands. − These emerging operational modes and sources of recharge water may create previously undocumented coupled geochemical and hydrological perturbations within target aquifers, which may trigger metal(loid) mobilization. Potential barriers to successful, widespread implementation of MAR include the lack of a rigorous scientific and process-based understanding and, subsequently, limited clarity within regulatory frameworks or guidelines for addressing geogenic contaminant mobilization.…”

Section: Introductionmentioning

confidence: 99%

Mobilization of Arsenic and Other Naturally Occurring Contaminants during Managed Aquifer Recharge: A Critical Review

Fakhreddine

Prommer

Scanlon

et al. 2021

Environ. Sci. Technol.

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Population growth and climate variability highlight the need to enhance freshwater security and diversify water supplies. Subsurface storage of water in depleted aquifers is increasingly used globally to alleviate disparities in water supply and demand often caused by climate extremes including floods and droughts. Managed aquifer recharge (MAR) stores excess water supplies during wet periods via infiltration into shallow underlying aquifers or direct injection into deep aquifers for recovery during dry seasons. Additionally, MAR can be designed to improve recharge water quality, particularly in the case of soil aquifer treatment and riverbank filtration. While there are many potential benefits to MAR, introduction of recharge water can alter the native geochemical and hydrological conditions in the receiving aquifer, potentially mobilizing toxic, naturally occurring (geogenic) contaminants from sediments into groundwater where they pose a much larger threat to human and ecosystem health. On the basis of the present literature, arsenic poses the most widespread challenge at MAR sites due to its ubiquity in subsurface sediments and toxicity at trace concentrations. Other geogenic contaminants of concern include fluoride, molybdenum, manganese, and iron. Water quality degradation threatens the viability of some MAR projects with several sites abandoning operations due to arsenic or other contaminant mobilization. Here, we provide a critical review of studies that have uncovered the geochemical and hydrological mechanisms controlling mobilization of arsenic and other geogenic contaminants at MAR sites worldwide, including both infiltration and injection sites. These mechanisms were evaluated based on site-specific characteristics, including hydrological setting, native aquifer geochemistry, and operational site parameters (e.g., source of recharge water and recharge/recovery cycling). Observed mechanisms of geogenic contaminant mobilization during MAR via injection include shifting redox conditions and, to a lesser extent, pH-promoted desorption, mineral solubility, and competitive ligand exchange. The relative importance of these mechanisms depends on various site-specific, operational parameters, including pretreatment of injection water and duration of injection, storage, and recovery phases. This critical review synthesizes findings across case studies in various geochemical, hydrological, and operational settings to better understand controls on arsenic and other geogenic contaminant mobilization and inform the planning and design of future MAR projects to protect groundwater quality. This critical review concludes with an evaluation of proposed management strategies for geogenic contaminants and identification of knowledge gaps regarding fate and transport of geogenic contaminants during MAR.

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Linking water quality changes to geochemical processes occurring in a reactive soil column during treated wastewater infiltration using a large-scale pilot experiment: Insights into Mn behavior

Cited by 19 publications

References 80 publications

Assessing Aquifer Water Level and Salinity for a Managed Artificial Recharge Site Using Reclaimed Water

Assessing Aquifer Water Level and Salinity for a Managed Artificial Recharge Site Using Reclaimed Water

Seasonal and Spatial Variability of Anthropogenic and Natural Factors Influencing Groundwater Quality Based on Source Apportionment

Mobilization of Arsenic and Other Naturally Occurring Contaminants during Managed Aquifer Recharge: A Critical Review

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