Removal of 2,6-dichloro-1,4-benzoquinone Precursors during Advanced Water Purification Process

IF 2.1 4区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL Ozone: Science & Engineering Pub Date : 2022-01-03 DOI:10.1080/01919512.2021.2014333

T. Nakai, K. Kosaka, M. Asami, M. Akiba

引用次数: 0

Abstract

ABSTRACT The fates of 2,6-dichloro-1,4-benzoquinone (DCBQ) precursors were evaluated according to their formation potentials (FPs) upon chlorination during ozone/biological activated carbon treatment at two water purification plants (WPPs). DCBQ-FP levels in raw waters were 19 and 21 ng/L. DCBQ-FPs were slightly reduced by coagulation, sedimentation, and rapid filtration, but to < 8 ng/L by ozonation, in contrast to changes in absorbance at 260 nm and trihalomethane (THM)-FPs. DCBQ-FPs of water after sedimentation at WPP and secondary effluents at sewage treatment plants were decreased to a much greater extent than total THM-FPs at low ozone doses. Thus, ozonation is effective for removal of DCBQ precursors.

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高级水净化工艺中2,6-二氯-1,4-苯醌前体的去除

根据臭氧/生物活性炭处理过程中2,6-二氯-1,4-苯醌(DCBQ)前体在氯化作用下的形成势(FPs)，对其命运进行了评价。原水DCBQ-FP含量分别为19和21 ng/L。经混凝、沉淀和快速过滤后，DCBQ-FPs略有降低，但经臭氧氧化后，DCBQ-FPs < 8 ng/L，与260 nm吸光度和三卤甲烷(THM)-FPs的变化相反。在低臭氧剂量下，WPP沉淀后的水和污水处理厂二次出水的DCBQ-FPs比总THM-FPs下降的幅度要大得多。因此，臭氧氧化对DCBQ前体的去除是有效的。

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

Ozone: Science & Engineering 环境科学-工程：环境

CiteScore

5.90

自引率

11.10%

发文量

审稿时长

2 months

期刊介绍： The only journal in the world that focuses on the technologies of ozone and related oxidation technologies, Ozone: Science and Engineering brings you quality original research, review papers, research notes, and case histories in each issue. Get the most up-to date results of basic, applied, and engineered research including: -Ozone generation and contacting- Treatment of drinking water- Analysis of ozone in gases and liquids- Treatment of wastewater and hazardous waste- Advanced oxidation processes- Treatment of emerging contaminants- Agri-Food applications- Process control of ozone systems- New applications for ozone (e.g. laundry applications, semiconductor applications)- Chemical synthesis. All submitted manuscripts are subject to initial appraisal by the Editor, and, if found suitable for further consideration, to peer review by independent, anonymous expert referees.