Removal of phosphate in secondary effluent from municipal wastewater treatment plant by iron and aluminum electrocoagulation: Efficiency and mechanism

doi:10.1016/j.seppur.2021.120439

IR > 土木工程学院

	Removal of phosphate in secondary effluent from municipal wastewater treatment plant by iron and aluminum electrocoagulation: Efficiency and mechanism
	Yang, Yahong1 ; Li, Yuwei 1,2; Mao, Ran 2; Shi, Yong 3; Lin, Song 4; Qiao, Meng 2; Zhao, Xu 2
	2022-04-01
发表期刊	Separation and Purification Technology
ISSN	1383-5866
卷号	286
摘要	Domestic wastewater quality conditions are complex, which will affect the types of flocs in Fe-electrocoagulation (EC). However, the influence of different types of flocs has not been considered for the removal of phosphate in real wastewater. Herein, the removal of phosphate in real domestic wastewater secondary effluent was investigated during Fe-EC process under low and high dissolved oxygen (DO) concentrations. The removal of phosphate was also investigated during Al-EC process for comparison. The results showed that phosphate (1.3 mg/L) could be efficiently removed with an efficiency of 98% ± 2% both during Fe-EC process with low and high DO concentration, as well as during Al-EC process, with a slight lower removal rate during Al-EC (in 5 min) compared with Fe-EC (in 2 min), at 10 mA/cm2. The flocs composition was mainly green rust during Fe-EC with low DO, amorphous trivalent iron oxide/hydroxide during Fe-EC with high DO, and amorphous alum hydroxide during Al-EC. The removal mechanism was also deduced that the removal of phosphate by Fe-EC with high DO and Al-EC was mainly by coagulation, while by Fe-EC with low DO concentration was mainly by ion-exchange adsorption. © 2022 Elsevier B.V.
关键词	Aluminum Biochemical oxygen demand Dissolved oxygen Efficiency Effluent treatment Effluents Ion exchange Iron oxides Sewage pumping plants Wastewater treatment Water treatment plants Dissolved oxygen concentrations Domestic wastewater Electro coagulations Floc Low dissolved oxygen Municipal wastewater treatment plant effluent Municipal wastewater treatment plants Phosphate removal Secondary effluent Wastewater treatment plant effluent
DOI	10.1016/j.seppur.2021.120439
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Chemical
WOS记录号	WOS:000782997300007
出版者	Elsevier B.V.
EI入藏号	20220211452280
EI主题词	Coagulation
EI分类号	445.1 Water Treatment Techniques ; 452.2 Sewage Treatment ; 452.3 Industrial Wastes ; 452.4 Industrial Wastes Treatment and Disposal ; 541.1 Aluminum ; 802.2 Chemical Reactions ; 802.3 Chemical Operations ; 804.2 Inorganic Compounds ; 913.1 Production Engineering
来源库	WOS
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/157860
专题	土木工程学院
通讯作者	Qiao, Meng
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 2.Chinese Acad Sci, Key Lab Drinking Water Sci & Technol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China; 3.Guizhou Water Conservancy & Hydropower Engn Consu, Guiyang 550002, Peoples R China; 4.Guizhou Water Serv Co LTD, R&D Ctr, Guiyang 550002, Peoples R China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Yang, Yahong,Li, Yuwei,Mao, Ran,et al. Removal of phosphate in secondary effluent from municipal wastewater treatment plant by iron and aluminum electrocoagulation: Efficiency and mechanism[J]. Separation and Purification Technology,2022,286.
APA	Yang, Yahong.,Li, Yuwei.,Mao, Ran.,Shi, Yong.,Lin, Song.,...&Zhao, Xu.(2022).Removal of phosphate in secondary effluent from municipal wastewater treatment plant by iron and aluminum electrocoagulation: Efficiency and mechanism.Separation and Purification Technology,286.
MLA	Yang, Yahong,et al."Removal of phosphate in secondary effluent from municipal wastewater treatment plant by iron and aluminum electrocoagulation: Efficiency and mechanism".Separation and Purification Technology 286(2022).