Evaluation of a hybrid process of magnetic ion-exchange resin treatment followed by ozonation in secondary effluent organic matter removal

doi:10.1016/j.scitotenv.2020.142361

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	Evaluation of a hybrid process of magnetic ion-exchange resin treatment followed by ozonation in secondary effluent organic matter removal
	Tang, Yingcai 1; Chen, Zhiqiang 1,2; Wen, Qinxue 1; Yang, Boxuan 1; Pan, Yang 3
刊名	Science of the Total Environment
	2021-02-01
卷号	754
关键词	Ammonia Biogeochemistry Correlation methods Desorption Effluent treatment Effluents Fluorescence Ion exchange resins Ions Ozone Ozonization Self organizing maps Sodium chloride Sodium hydroxide Spectroscopic analysis Toxicity Desorption characteristics Effluent organic matter Magnetic ion exchange resins Organic micro-pollutants Parallel factor analysis Pearson correlation analysis Removal characteristics Ultraviolet absorbance
ISSN号	00489697
DOI	10.1016/j.scitotenv.2020.142361
英文摘要	The presence of effluent organic matter (EfOM) and organic micro-pollutants (OMPs) in secondary effluent is receiving increasing concern due to their potential impacts on the aquatic environment and human health. In this study, the removal characteristics of EfOM by magnetic ion-exchange resin (MIEX), ozonation, and the hybrid process of MIEX followed by ozonation (M + O) were compared by measuring the bulk organic indicators (BOIs), OMPs, bio-toxicity, and fluorescence. Furthermore, the desorption characteristics of MIEX were comprehensively studied. Ozonation could reduce the OMPs, total fluorescence (TF), genotoxicity, and oestrogenic activity more effectively than MIEX, with reductions of 80.3%, 97.8%, 98.9%, and 94.6%, respectively. The M + O process was capable of removing more EfOM than the individual MIEX or ozonation processes and could reduce the genotoxicity and oestrogenic activity to the detection limit. By implementing MIEX as a pre-treatment, the generation of ammonianitrogen and nitratenitrogen was effectively reduced in the subsequent ozonation process as MIEX adsorbed organic nitrogen and nitrite-nitrogen. The different regenerants influenced the OMP desorption performance of MIEX by changing the desorption mechanisms, and NaCl + NaOH was the best regenerant due to its high total OMP desorption efficiency. Parallel factor analysis coupled with self-organising maps further explained the differences in fluorescence desorption due to the addition of NaOH to the regenerated solution. Pearson correlation analysis indicated the potential of using spectroscopic indicators, such as ultraviolet absorbance and TF, to assess the evolution of OMPs and bio-toxicity during the M + O and MIEX desorption processes. © 2020 Elsevier B.V.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	Elsevier B.V., Netherlands
WOS记录号	WOS:000593907600009
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115544]
专题	兰州理工大学土木工程学院
作者单位	1.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin; 150090, China; 2.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730070, China; 3.National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou; 215000, China
推荐引用方式 GB/T 7714	Tang, Yingcai,Chen, Zhiqiang,Wen, Qinxue,et al. Evaluation of a hybrid process of magnetic ion-exchange resin treatment followed by ozonation in secondary effluent organic matter removal[J]. Science of the Total Environment,2021,754.
APA	Tang, Yingcai,Chen, Zhiqiang,Wen, Qinxue,Yang, Boxuan,&Pan, Yang.(2021).Evaluation of a hybrid process of magnetic ion-exchange resin treatment followed by ozonation in secondary effluent organic matter removal.Science of the Total Environment,754.
MLA	Tang, Yingcai,et al."Evaluation of a hybrid process of magnetic ion-exchange resin treatment followed by ozonation in secondary effluent organic matter removal".Science of the Total Environment 754(2021).