Comparison of micropollutants' removal performance between pre-ozonation and post-ozonation using a pilot study

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Comparison of micropollutants' removal performance between pre-ozonation and post-ozonation using a pilot study
	Zhang, Yu; Wang, Chunmiao; Guo, Qingyuan; Yu, Jianwei; Yang, Kai; Yu, Zhiyong; Zhang, Dong; Xia, Ping; Yang, Min
刊名	WATER RESEARCH
	2017-03-15
卷号	111 期号:0 页码:147-153
关键词	Micropollutants Pre-ozonation Post-ozonation Drinking Water
英文摘要	Despite the strong oxidizing ability of ozone, pre-ozonation has seldom been employed for the purpose of micropollutant removal in drinking water utilities. In this paper, the possibility of using pre-ozonation instead of post-ozonation for the removal of micropollutants was explored because of the lower risk of forming carcinogenic bromate. A 1.0 m(3)/h pilot system was utilized to compare the efficacy of pre- and post-ozonation in the removal of bulk organic pollutants as well as micropollutants, including typical odor-causing compounds, pharmaceuticals, and typical pesticides, from one source water (Huangpu River) characterized by the occurrence of various micropollutants. Both pre-ozonation and post-ozonation could achieve similar water purification performance under an ozone dose of 1.5 mg/L, in terms of bulk water quality parameters like CODMn, (66% in combination with biological activated carbon (BAC) treatment, compared to 62% with the pre-ozonation-BAC combination) or micropollutants including 27 pharmaceuticals (85% in combination with BAC compared to 87% with the pre-ozonation-BAC combination) and 25 pesticides (72% in combination with BAC compared to 61% with the preozonation-BAC combination). Pre-ozonation exhibited slightly better odorant removal performance (100% in combination with BAC compared to 92% with the post-ozonation-BAC combination); however, post-ozonation generated approximately 6.0 mu g/L bromate at an ozone dose of 2.0 mg/L, while pre-ozonation did not form bromate even at an ozone dose as high as 3.0 mg/L. So pre-ozonation in combination with BAC might be a solution for the removal of micropollutants from source water with high bromate formation risk. The results of this study will be helpful for the optimization of ozonation processes in the water supply industry. (C) 2016 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39677]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Zhang, Yu,Wang, Chunmiao,Guo, Qingyuan,et al. Comparison of micropollutants' removal performance between pre-ozonation and post-ozonation using a pilot study[J]. WATER RESEARCH,2017,111(0):147-153.
APA	Zhang, Yu.,Wang, Chunmiao.,Guo, Qingyuan.,Yu, Jianwei.,Yang, Kai.,...&Yang, Min.(2017).Comparison of micropollutants' removal performance between pre-ozonation and post-ozonation using a pilot study.WATER RESEARCH,111(0),147-153.
MLA	Zhang, Yu,et al."Comparison of micropollutants' removal performance between pre-ozonation and post-ozonation using a pilot study".WATER RESEARCH 111.0(2017):147-153.