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240515s2024 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2024.136
|2 doi
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|a eng
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|a Zhang, Le
|e verfasserin
|4 aut
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|a Treatment of electroplating wastewater using electrocoagulation and integrated membrane
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a Date Completed 15.05.2024
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|a Date Revised 15.05.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2024 The Authors This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY 4.0), which permits copying, adaptation and redistribution, provided the original work is properly cited (http://creativecommons.org/licenses/by/4.0/).
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|a Electroplating wastewater contains heavy metal ions and organic matter. These contaminants not only endanger the environment but also pose risks to human health. Despite the development of various treatment processes such as chemical precipitation MBR, electrocoagulation (EC) ceramic membrane (CM), coagulation ultrafiltration (UF) reverse osmosis (RO), and CM RO. These methods are only effective for low concentrations of heavy metals and struggle with high concentrations. To address the challenge of treating electroplating wastewater with high heavy metal content, this study focuses on the wastewater from Dongfang Aviation Machinery Processing Plant. It introduces an EC and integrated membrane (IM) treatment process for electroplating wastewater. The IM comprises microfiltration (MF) membrane, nanofiltration (NF) membrane, and RO membrane. Results indicated that under specific conditions, such as a pH of 8, current density of 5 A/dm2, electrode plate spacing of 2 cm, 35 min of electrolysis time, and influent pH of 10 for the IM, removal rates of Zn2+, Cu2+, Ni2+, and TCr in the wastewater exceeded 99%. The removal rates of chemical oxygen demand (COD), suspended solids (SS), total phosphorus (TP), total nitrogen (TN), and petroleum in wastewater exceed 97%. Following a continuous cleaning process, the membrane flux can consistently recover to over 94.3%
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|a Journal Article
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|a cleaning
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|a concentration
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|a heavy metals
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|a membrane flux
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|a operating pressure
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|a Qin, Linxin
|e verfasserin
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|a Ma, Lanting
|e verfasserin
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|a Shen, Zhe
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|a Jin, Yabin
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|a Chen, Si
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 89(2024), 9 vom: 15. Mai, Seite 2538-2557
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|g day:15
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|g pages:2538-2557
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|u http://dx.doi.org/10.2166/wst.2024.136
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