Selection and evaluation of water pretreatment technologies for managed aquifer recharge (MAR) with reclaimed water

Yuan, Jie; Dyke, Michele I. Van; Huck, Peter M.

doi:10.1016/j.chemosphere.2019.124886

Cited by 10 publications

(4 citation statements)

References 183 publications

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“…Dissolved organic carbon (DOC) removal was used as one indicator to evaluate the adsorption characteristics of GAC. In addition, six representative micropollutants of different chemical groups were selected to cover a broad range of affinity for adsorption: geosmin and MIB are prevalent taste and odor contaminants in drinking water, and exhibit medium GAC adsorbability, with MIB being less well adsorbed; , carbamazepine is among the most frequently detected pharmaceuticals in drinking water, and it has a high adsorption affinity to GAC; , caffeine, the most widely consumed stimulant, was selected since it is typically used as an indicator of wastewater contamination in drinking water sources and is relatively poorly adsorbed; and PFOA and PFOS were selected as representative compounds of the per- and polyfluoroalkyl substances (PFAS) group. It has been reported that both chemicals can be effectively adsorbed by virgin GAC but poorly adsorbed by preloaded GAC in drinking water treatment plants .…”

Section: Methodsmentioning

confidence: 99%

Is In-Service Granular Activated Carbon Biologically Active? An Evaluation of Alternative Experimental Methods to Distinguish Adsorption and Biodegradation in GAC

Yuan

Fox

Crowe

et al. 2022

Environ. Sci. Technol.

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In-service granular activated carbon (GAC) may transform into biological activated carbon (BAC) and remove contaminants through both adsorption and biodegradation, but it is difficult to determine its biodegradative capacity. One approach to understand the GAC biodegradative capacity is to compare the performance between unsterilized and sterilized GAC, but the sterilization methods may not ensure effective microbial inhibition and may affect adsorption. This study identified the 14C-glucose respiration rate as the best metric to evaluate the effectiveness of three sterilization methods: sodium azide addition, autoclaving, and γ irradiation. The sterilization protocols were refined, including continuously feeding 300 mg/L of sodium azide, three cycles of autoclaving, and 10–12 kGy of γ irradiation. Parallel minicolumn tests were conducted to identify sodium azide addition as the most broadly effective sterilization method with an insignificant effect on adsorption in most cases, except for the adsorption of anionic compounds under certain conditions. Nevertheless, this problem was solved by decreasing the azide dosage as long as it is still sufficient to provide effective microbial inhibition. This study helps to develop an approach that differentiates adsorption and biodegradation in GAC, which could be used by future studies to advance our understanding of BAC filtration.

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Section: Methodsmentioning

confidence: 99%

Is In-Service Granular Activated Carbon Biologically Active? An Evaluation of Alternative Experimental Methods to Distinguish Adsorption and Biodegradation in GAC

Yuan

Fox

Crowe

et al. 2022

Environ. Sci. Technol.

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“…A commonly used artificial sweetener, sucralose, and the most widely consumed stimulant, caffeine, were selected because they are typically used as indicators of wastewater contamination. , Both chemicals are relatively poorly adsorbed . Carbamazepine and acetaminophen are among the most commonly used pharmaceuticals, and they exhibit similar high adsorption efficiencies. − The structures and physical, chemical, and biological properties of the selected compounds are listed in Table S2.…”

Section: Experimental Methodsmentioning

confidence: 99%

Micropollutant Mass Transfer Zones in Granular Activated Carbon Contactors

et al. 2021

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A “minicolumn” test approach was recently developed to estimate the performance of preloaded granular activated carbon (GAC) in water treatment plants for micropollutant removal. One of the requirements of this test is that the GAC bed must have a broad mass transfer zone (MTZ) for the contaminant of interest, but this has never been verified. In this study, GAC of different ages harvested from three different bed depths was subjected to lab-scale minicolumn and isotherm tests to measure adsorption kinetics and thermodynamic properties, respectively. The GAC was challenged with micropollutants with a range of adsorption characteristics. The GAC was found to exhibit approximately uniform removal efficiencies for all of the selected micropollutants across the depth, indicating a broad MTZ. Additionally, the MTZ for 2-methylisoborneol and geosmin in a newly installed GAC filter was observed to broaden to beyond the depth of the filter within 7 weeks of installation. This work helps to verify the minicolumn test protocol and supports a novel approach by eliminating the dependence of GAC performance on bed location. With such an approach, utilities may more easily conduct the minicolumn test to establish an accurate GAC replacement schedule and to optimize GAC operation for maximum contaminant removal.

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“…Selection of efficient water pretreatment technologies to remove residual contaminants in treated wastewater effluent is critical for safe and healthy indirect potable reuse of reclaimed water for managed aquifer recharge (MAR) (Yuan, Van Dyke, & Huck, 2019). An approach for the selection and evaluation of such technological options was provided by the authors.…”

Section: Managementmentioning

confidence: 99%

Water reclamation and reuse

Zhang

Sun

Liu

2020

Water Environment Research

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Literature published in 2019 pertinent to water reclamation and reuse has been classified into five sections: safe reuse, treatment technologies, management, assessment, and case studies. Membranes have been widely applied in integrated processes to polish secondary effluent and achieve high-quality reclaimed water. Increased efforts have also been made to facilitate feasible and safe water reuse.

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Selection and evaluation of water pretreatment technologies for managed aquifer recharge (MAR) with reclaimed water

Cited by 10 publications

References 183 publications

Is In-Service Granular Activated Carbon Biologically Active? An Evaluation of Alternative Experimental Methods to Distinguish Adsorption and Biodegradation in GAC

Is In-Service Granular Activated Carbon Biologically Active? An Evaluation of Alternative Experimental Methods to Distinguish Adsorption and Biodegradation in GAC

Micropollutant Mass Transfer Zones in Granular Activated Carbon Contactors

Water reclamation and reuse

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