DOI: 10.1016/j.watres.2018.04.011
Scopus记录号: 2-s2.0-85046372299
论文题名: Optimization of strong-base anion exchange OandM costs for hexavalent chromium treatment
作者: Plummer S. ; Gorman C. ; Henrie T. ; Shimabuku K. ; Thompson R. ; Seidel C.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 139 起始页码: 420
结束页码: 433
语种: 英语
英文关键词: Brine reuse
; Brine treatment
; Ferrous reduction
; Nanofiltration
; Nitrate chromatographic peaking
; Stannous reduction
Scopus关键词: Costs
; Groundwater
; Impurities
; Nanofiltration
; Negative ions
; Nitrates
; Potable water
; Resins
; Sodium chloride
; Sulfur compounds
; Water quality
; Brine treatment
; Chromium concentration
; Full-scale demonstrations
; Hexavalent chromium treatments
; Pilot-scale experiments
; Strong base anion exchanges
; Sulfate concentrations
; Water quality parameters
; Chromium compounds
; arsenic
; base
; bicarbonate
; chromium derivative
; ground water
; nitrate
; resin
; selenium
; sodium chloride
; sodium sulfate
; sulfate
; uranium
; vanadium
; brine
; chromium
; chromium hexavalent ion
; inorganic salt
; nitric acid derivative
; brine
; chromium
; concentration (composition)
; drinking water
; experimental study
; filtration
; hazardous waste
; ion exchange
; nanotechnology
; nitrate
; optimization
; performance assessment
; pollutant removal
; precipitation (chemistry)
; reduction
; resin
; trace element
; anion exchange
; Article
; concentration (parameters)
; controlled study
; elution
; nanofiltration
; priority journal
; recycling
; reduction (chemistry)
; water quality
; water treatment
; California
; chemistry
; cost
; economics
; ion exchange
; procedures
; recycling
; water management
; water pollutant
; California
; United States
; California
; Chromium
; Costs and Cost Analysis
; Ion Exchange
; Nitrates
; Recycling
; Salts
; Sodium Chloride
; Sulfates
; Water Pollutants, Chemical
; Water Purification
英文摘要: Hexavalent chromium [Cr(VI)] in drinking water is pending regulation in California and is being considered for regulation in other locations. While strong-base anion exchange (SBA-IX) can efficiently remove Cr(VI) to low-levels that may be required to comply with future MCLs, operational and maintenance (OandM) costs can be considerable if the spent brine is disposed of as hazardous waste. Through bench- and pilot-scale experiments and full-scale demonstrations, this study examined the ability of emerging and established brine treatment and reuse techniques as well as recently developed resins to decrease OandM costs. When profiling anion elution during regeneration with nanofiltration treated and untreated spent brine, it appeared that at least 1 and 3 reuse cycles were feasible, respectively. Stannous- and ferrous-based reductants were more efficient than sulfur-based reductants when treating spent brine. Bed volumes to 8 μg/L chromium breakthrough with 7 resins varied by as much as a factor of 2 and correlated (R2 = 0.84) with resin total exchange capacities. Spent brine reuse, segmented regeneration (an optimized brine reuse method), ferrous reduction, and nanofiltration of spent brine were estimated to decrease OandM costs by 30, 70, 63, and 61%, respectively. Selection of high performing resins was the most simple way to decrease OandM costs (up to 70% savings). The sum of nitrate and sulfate raw water equivalent concentrations was found to be the principal water quality parameter that influenced the performance of 4 resins in 7 different groundwaters because nitrate and sulfate concentrations were orders of magnitude greater than chromium concentrations. Resins with higher chromium capacities eluted more co-contaminants including arsenic, selenium, uranium, and vanadium because they likely had higher co-contaminant capacities. Co-contaminant elution was found to be complex because associations can form between regenerant and co-eluting anions. Sodium chloride was the most efficient regenerant, though other regenerants provided benefits such as enhanced uranium elution most likely by complexing with uranium to inhibit its precipitation. Nitrate peaking was found to be limited even when reusing untreated and nanofiltration treated spent brine. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112752
Appears in Collections: 气候减缓与适应
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作者单位: Corona Environmental Consulting, Newark, CA, United States; Corona Environmental Consulting, Louisville, CO, United States; California Water Service Company, Marysville, CA, United States
Recommended Citation:
Plummer S.,Gorman C.,Henrie T.,et al. Optimization of strong-base anion exchange OandM costs for hexavalent chromium treatment[J]. Water Research,2018-01-01,139