Mostrar el registro sencillo del ítem

Usefulness of the Cl/Br ratio to identify the effect of reverse osmosis treated waters on groundwater systems

dc.contributor.authorAlcalá F.J.
dc.date.accessioned2020-09-02T22:11:03Z
dc.date.available2020-09-02T22:11:03Z
dc.date.issued2019
dc.identifier10.1016/j.desal.2019.114102
dc.identifier.citation470, , -
dc.identifier.issn00119164
dc.identifier.urihttps://hdl.handle.net/20.500.12728/3503
dc.descriptionThe chloride-to-bromide molar ratio (R ≡ Cl/Br) is widely used in tracing groundwater salinity. Less experience exists on how some industrial processes such as the reverse osmosis (RO) water treatment modify the R value of desalinated water (P) and reject brine (T), and even less on how distinctive for hydrogeological applications the R changes are. This paper assesses the Cl/Br ratio usefulness to identify the effect of P and T on groundwater systems. First, the experimental R changes produced in P and T during standard RO operations and treatments of raw (I) seawater, brackish groundwater, and tertiary-treated domestic wastewater in nine RO plants (three in Gran Canaria Island and six in south-eastern continental Spain) were determined by means of the XP = RP/RI (R change in P) and XT = RT/RI (R change in T) ratios. XP and XT were respectively 0.90 and 1.07 for treatment 1 (weak pre-acidification) in one RO plant, 0.82 ± 0.09 and 0.94 ± 0.05 for treatment 2 (weak pre-acidification and weak pre-chlorination) in five RO plants, 0.63 and 0.97 for treatment 3 (moderate pre-acidification and strong pre-chlorination) in one RO plant, and 3.21 ± 2.02 and 1.00 ± 0.00 for treatment 4 (post-chlorination) in two RO plants. P was for irrigation (treatments 1 to 3) and for domestic use (treatment 4). Latter, the experimental XP and XT ratios were input data for six theoretical mixing scenarios aimed at showing how groundwater R changes in response to progressive contributions of P and T produced from different I water. The Cl/Br ratio enables to identify the effect of P from treatments 3 and 4, is scarcely effective for treatments 1 and 2, and is especially useful when P produced from seawater is used in other aquifer having different R. The Cl/Br ratio did not clearly identify T from any treatment. © 2019 Elsevier B.V.
dc.language.isoen
dc.publisherElsevier B.V.
dc.subjectChloride-to-bromide ratio
dc.subjectDesalinated water
dc.subjectGroundwater mixing scenarios
dc.subjectGroundwater quality
dc.subjectReject brine
dc.subjectReverse osmosis
dc.subjectAcidification
dc.subjectAquifers
dc.subjectChlorination
dc.subjectChlorine compounds
dc.subjectGroundwater
dc.subjectGroundwater resources
dc.subjectMixing
dc.subjectMolar ratio
dc.subjectReverse osmosis
dc.subjectSeawater effects
dc.subjectWastewater treatment
dc.subjectWater filtration
dc.subjectWater quality
dc.subjectBrackish ground water
dc.subjectChloride-to-bromide ratio
dc.subjectDesalinated water
dc.subjectDomestic wastewater
dc.subjectGroundwater mixing
dc.subjectGroundwater salinities
dc.subjectGroundwater system
dc.subjectIndustrial processs
dc.subjectIndustrial water treatment
dc.subjectaquifer
dc.subjectbrine
dc.subjectbromide
dc.subjectchloride
dc.subjectdesalination
dc.subjectexperimental study
dc.subjectgroundwater pollution
dc.subjectmixing
dc.subjectreverse osmosis
dc.subjectwastewater treatment
dc.subjectCanary Islands
dc.subjectGran Canaria
dc.subjectLas Palmas
dc.subjectSpain
dc.titleUsefulness of the Cl/Br ratio to identify the effect of reverse osmosis treated waters on groundwater systems
dc.typeArticle


Ficheros en el ítem

Thumbnail
Nombre:
item_2-s2.0-85070887933.pdf
Tamaño:
3.465Kb
Formato:
PDF
Ver/

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem