Compatibility Of Desalinated Water With The Dammam Formation At The Northwest Shigaya Water-Well Field, Kuwait – A Preliminary Study

Al-Awadi, E.; Mukhopadhyay, A.; Al-Haddad, Adel

doi:10.1007/s100400050068

Cited by 8 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Well clogging was identified as a major concern, especially in the clastic aquifers (Mukhopadhyay et al, 1994). These field tests were followed by laboratory studies focusing on clogging and geochemical processes using core experiments with DSW (Al-Awadi et al, 1995;Mukhopadhyay et al, 1998Mukhopadhyay et al, , 2004. A closely related study, on MAR with reverse-osmosis wastewater was conducted at the St André MAR site in Belgium.…”

Section: Introductionmentioning

confidence: 99%

Monitoring and modeling infiltration-recharge dynamics of managed aquifer recharge with desalinated seawater

Ganot¹,

Holtzman²,

Weisbrod³

et al. 2016

Preprint

View full text Add to dashboard Cite

Abstract. We study the relation between surface infiltration and groundwater recharge during managed aquifer recharge (MAR) with desalinated seawater in an infiltration pond, at the Menashe site that overlies the northern part of the Israeli Coastal Aquifer. We monitor infiltration dynamics at multiple scales (up to the scale of the entire pond) by measuring the ponding depth, sediment water content and groundwater levels, using pressure sensors, single-ring infiltrometers, soil sensors and observation wells. During a month (January 2015) of continuous intensive MAR (2.45 · 106 m3 discharged to a 10.7 hectare area), groundwater level has risen by 17 m attaining full connection with the pond, while average infiltration rates declined by almost 2 orders of magnitude (from ~ 11 to ~ 0.4 m d−1). This reduction can be explained solely by the lithology of the unsaturated zone that includes relatively low-permeability sediments, whereas clogging processes at pond-surface – abundant in many MAR operations – are negated by the high-quality desalinated seawater or negligible compared to the low-permeability layers. Recharge during infiltration was estimated reasonably well by simple analytical models, whereas a numerical model was used for estimating groundwater recharge after the end of infiltration. It was found that a calibrated numerical model with a one-dimensional representative sediment profile is able to capture MAR dynamics, including temporal reduction of infiltration rates, drainage and groundwater recharge. Measured infiltration rates of an independent MAR event (January 2016) fitted well to those calculated by the calibrated numerical model, showing the model validity. The successful quantification methodologies of the temporal groundwater recharge are useful for MAR practitioners and can serve as an input for groundwater flow models.

show abstract

Section: Introductionmentioning

confidence: 99%

Monitoring and modeling infiltration-recharge dynamics of managed aquifer recharge with desalinated seawater

Ganot¹,

Holtzman²,

Weisbrod³

et al. 2016

Preprint

View full text Add to dashboard Cite

show abstract

“…Further laboratory core‐flow and batch experiments indicated permeability reduction, which was explained by clogging with fines originated from carbonates and evaporites dissolution. Yet from these works, it was concluded that MAR with DSW is feasible in the studied geological formations (Al‐Awadi et al, ; Mukhopadhyay et al, ).…”

Section: Introductionmentioning

confidence: 99%

Geochemical Processes During Managed Aquifer Recharge With Desalinated Seawater

Ganot

Holtzman

Weisbrod

et al. 2018

Water Resources Research

View full text Add to dashboard Cite

We study geochemical processes along the variably‐saturated zone during managed aquifer recharge (MAR) with reverse‐osmosis desalinated seawater (DSW). The DSW, post‐treated at the desalination plant by calcite dissolution (remineralization) to meet the Israeli water quality standards, is recharged into the Israeli Coastal Aquifer through an infiltration pond. Water quality monitoring during two MAR events using suction cups and wells inside the pond indicates that cation exchange is the dominant subsurface reaction, driven by the high Ca2+ concentration in the post‐treated DSW. Stable isotope analysis shows that the shallow groundwater composition is similar to the recharged DSW, except for enrichment of Mg2+, Na+, Ca2+, and HCO3–. A calibrated variably‐saturated reactive transport model is used to predict the geochemical evolution during 50 years of MAR for two water quality scenarios: (i) post‐treated DSW (current practice) and (ii) soft DSW (lacking the remineralization post‐treatment process). The latter scenario was aimed to test soil‐aquifer‐treatment (SAT) as an alternative post‐treatment technique. Both scenarios provide an enrichment of ∼2.5 mg L−1 in Mg2+ due to cation exchange, compared to practically zero Mg2+ currently found in the Israeli DSW. Simulations of the alternative SAT scenario provide Ca2+ and HCO3– remineralization due to calcite dissolution at levels that meet the Israeli standard for DSW. The simulated calcite content reduction in the sediments below the infiltration pond after 50 years of MAR was low (<1%). Our findings suggest that remineralization using SAT for DSW is a potentially sustainable practice at MAR sites overlying calcareous sandy aquifers.

show abstract

“…It was shown to facilitate stable water distribution, overcoming operational disturbances and enabling the construction of desalination plants that are not designed for peak demand, but rather for annual demand [4]. The potential of this solution was demonstrated in Abu-Dhabi [5,6], in the Emirate of Sharjha [4,7] and in Kuwait [8]. Recently, it was also tested in Israel [9].…”

Section: Introductionmentioning

confidence: 99%

Low Trihalomethane Formation during Managed Aquifer Recharge with Chlorinated Desalinated Water

Bernstein

Studny

Shyntychea

et al. 2020

Water

View full text Add to dashboard Cite

Trihalomethanes (THMs) are toxic disinfection by-products, formed in the reaction of chlorine with organic matter. This work aimed to study THM formation during a unique case study of managed aquifer recharge (MAR) with chlorinated desalinated seawater. THM formation was tested in the field, along a 3.0 m deep vadose zone gallery. Two small-scale experiments were conducted in the site, with untreated and with bromide spiked desalinated seawater. These were accompanied by a large-scale, ~1-month long operational MAR event. In the small-scale experiments, THM concentrations were shown to increase with bromide concentrations, with increasing dominance of the brominated species. Nevertheless, concentrations remained within the single µg/L range, which is an order of magnitude lower than drinking water regulations. Such low THM concentrations were also determined in the large-scale event. In both cases, THM formation occurred in the ponding water, without significant formation or degradation in the upper 3.0 m of the vadose zone. This study shows that MAR with chlorinated (<0.5 mg/L) desalinated seawater through sandy infiltration basins does not pose a threat to drinking water quality at this site.

show abstract

Compatibility Of Desalinated Water With The Dammam Formation At The Northwest Shigaya Water-Well Field, Kuwait – A Preliminary Study

Cited by 8 publications

References 0 publications

Monitoring and modeling infiltration-recharge dynamics of managed aquifer recharge with desalinated seawater

Monitoring and modeling infiltration-recharge dynamics of managed aquifer recharge with desalinated seawater

Geochemical Processes During Managed Aquifer Recharge With Desalinated Seawater

Low Trihalomethane Formation during Managed Aquifer Recharge with Chlorinated Desalinated Water

Contact Info

Product

Resources

About