Permeate quality, advanced oxidation process treatability, and cost for two concentrate treatment technologies to enhance recovery for potable reuse

IF 4.3 4区 环境科学与生态学 Q2 ENGINEERING, ENVIRONMENTAL
Water Reuse Pub Date : 2023-09-01 DOI:10.2166/wrd.2023.002
Han Gu, Julio Polanco, Ken P. Ishida, Megan H. Plumlee, Michael Boyd, Erik Desormeaux, Graham J. G. Juby, Mojtaba Farrokh Shad
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Abstract

Closed circuit reverse osmosis (CCRO) and forward osmosis-RO (FO-RO) were evaluated at a pilot scale to generate additional permeate from RO concentrate – achieving a recovery of 61% for CCRO and 35% for FO-RO – at a full-scale advanced water purification facility. This study assessed permeate water quality, suitability of the permeate for treatment by an ultraviolet-advanced oxidation process (UV-AOP), and cost/footprint for a conceptual 10- or 20-mgd system. Both technologies demonstrated inorganic, organic, and microbiological constituent removal suitable for blending with primary RO permeate. Virus challenge testing with MS coliphage demonstrated greater than 5-log removal by both technologies. Pilot-scale UV/hydrogen peroxide AOP treatment of CCRO or FO-RO permeate yielded similar performance (∼1.4-log N-nitrosodimethylamine removal and ∼0.5-log 1,4-dioxane removal) as the full-scale UV-AOP that treats the RO permeate from the purification facility. The estimated full-scale total unit cost (capital plus operation and maintenance costs) of product water produced by the two technologies was estimated to range from $0.91 to $1.12 per cubic meter, depending on the design flow rate of RO concentrate treated, and is estimated to be similar between the two technologies given the +50%/–30% expected accuracy of the Class 5 cost estimate.
两种浓缩物处理技术的渗透质量、高级氧化工艺的可处理性和成本,以提高饮用水回用的回收率
在一个全面的先进水净化设施中,对闭路反渗透(CCRO)和正向渗透-RO (FO-RO)在中试规模上进行了评估,以从RO浓缩物中产生额外的渗透——CCRO的回收率为61%,FO-RO的回收率为35%。本研究评估了渗透水的水质、渗透水对紫外线高级氧化工艺(UV-AOP)处理的适用性,以及10或20毫克/天的概念性系统的成本/足迹。这两种技术都证明了无机、有机和微生物成分的去除适合与初级反渗透渗透物混合。用MS噬菌体进行的病毒挑战测试表明,两种技术的去除率均≥3.7 log。中试规模的UV/过氧化氢AOP处理CCRO或FO-RO渗透物的性能与处理纯化设施的RO渗透物的全面UV-AOP相似(去除率为~ 1.4 log n -亚硝基二甲胺和去除率为~ 0.5 log 1,4-二氧六环)。根据处理反渗透浓缩物的设计流速,两种技术生产的产品水的全规模总单位成本(资本加上运营和维护成本)估计在每立方米0.91美元至1.12美元之间,考虑到5级成本估计的+50%/ -30%的预期准确性,估计两种技术之间的成本相似。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Water Reuse
Water Reuse Multiple-
CiteScore
6.20
自引率
8.90%
发文量
0
审稿时长
7 weeks
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