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Coagulation optimization using ferric and aluminum salts for treating high algae and high alkalinity source water in a typical North-China plant
Inchio Lou1; Shuyan Gong2; Xiangjun Huang3; Yanjin Liu4; Kai Meng Mok1
2013-04
Source PublicationDesalination and Water Treatment
ISSN1944-3994
Volume51Issue:16-18Pages:3361-3370
Abstract

Coagulation optimization using coagulants of ferric chloride (FeCl), polyaluminum chloride (PACl), and their combinations (FeCl/PACl) were evaluated through jar tests, by treating source water with high algal content (10-40 million cells/L) and high alkalinity (80-110 mg/L). The results indicated that when compared to single coagulants, the combined coagulants showed a superior coagulation performance in terms of turbidity, UV and algal removal. The optimal dosage was determined as 30-35 mg/L by using the combined PACl/FeCl (1:2 by mass) and dosing PACl followed by FeCl. By adding the coagulant aids of polymerized diallyl dimethyl ammonium chloride (HCA) and polyacrylamide (FO4190), the floc sizes may enlarge up to 1.75-2.0 mm. Scanning electron micrographs showed that the coagulant combination can form a more compact reticular aluminum-ferric structure, and thus increased the settleability of the flocs. The combined coagulation was further evaluated in full-scale water treatment plants, confirming the improvement of the removal of algae, turbidity, and residual iron in the treated water.

KeywordCoagulation Optimization Combined Coagulants High Algae And High Alkalinity Source Water Luan River
DOIhttps://doi.org/10.1080/19443994.2012.751158
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Chemical ; Water Resources
WOS IDWOS:000318906100028
PublisherTAYLOR & FRANCIS INC, 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA
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Cited Times [WOS]:5   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorInchio Lou
Affiliation1.Department of Civil and Environmental Engineering , Faculty of Science and Technology, University of Macau , Macau SAR , P.R. , China Correspondence
2.Tanggu Sino French Water Supply Co. Ltd , Tanggu District , Tianjin 300450 , P.R. , China
3.Sino French Water Development Co. Ltd , 718 Avenida do Conselheiro Borja, Macau SAR , P.R. , China
4.American Water, 1025 Laurel Oak Rd , Voorhees , NJ , 08043 , USA
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Inchio Lou,Shuyan Gong,Xiangjun Huang,et al. Coagulation optimization using ferric and aluminum salts for treating high algae and high alkalinity source water in a typical North-China plant[J]. Desalination and Water Treatment,2013,51(16-18):3361-3370.
APA Inchio Lou,Shuyan Gong,Xiangjun Huang,Yanjin Liu,&Kai Meng Mok.(2013).Coagulation optimization using ferric and aluminum salts for treating high algae and high alkalinity source water in a typical North-China plant.Desalination and Water Treatment,51(16-18),3361-3370.
MLA Inchio Lou,et al."Coagulation optimization using ferric and aluminum salts for treating high algae and high alkalinity source water in a typical North-China plant".Desalination and Water Treatment 51.16-18(2013):3361-3370.
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