Application of Chitosan Composite Flocculant in Tap Water Treatment

The chitosan is a good flocculant for tap water treatment because of its properties such as faster deposition rate and higher removal efficiency for COD (organic matter), SS (suspended solids), and metal ions. However, its high price limits the use in tap water treatment. In this paper, in order to...

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Main Authors: Awa Kangama, Defang Zeng, Xu Tian, Jinfu Fang
Format: Article
Language:English
Published: Hindawi Limited 2018-01-01
Series:Journal of Chemistry
Online Access:http://dx.doi.org/10.1155/2018/2768474
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spelling doaj-27cacbbc37b649559baad00f4910b6202020-11-25T00:44:11ZengHindawi LimitedJournal of Chemistry2090-90632090-90712018-01-01201810.1155/2018/27684742768474Application of Chitosan Composite Flocculant in Tap Water TreatmentAwa Kangama0Defang Zeng1Xu Tian2Jinfu Fang3School of Resource and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, ChinaSchool of Resource and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, ChinaSchool of Resource and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, ChinaSchool of Resource and Environmental Engineering, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, ChinaThe chitosan is a good flocculant for tap water treatment because of its properties such as faster deposition rate and higher removal efficiency for COD (organic matter), SS (suspended solids), and metal ions. However, its high price limits the use in tap water treatment. In this paper, in order to reduce costs, chitosan (CTS), polyaluminum chloride (CF-PAC), and modified rectorite (Al(OH)3 + HCl) were combined to prepare the flocculant for tap water treatment. In order to get the optimal composite flocculant formula, first, we combined these flocculants in two-by-two schema and then we combined all the three flocculants together with various dosing amounts. Through comparison between different combination schemas, the best formula of the composite chitosan flocculant was found to be CTS (ml) : CF-PAC (ml) : modified rectorite (Al(OH)3 + HCl) (ml) = 1 : 30 : 5, with a turbidity removal rate of 96.38% and a removal rate of aluminum up to 80.1%, while the treatment cost is the lowest. In addition, we have designed a cost-effective method for the treatment cost evaluation. As raw water, we used water from the Han River, which is used as raw water at Zonguan Waterworks. In order to show the effectiveness of our optimal composite chitosan formula, we have compared our treatment results to those of the aluminum polyaluminum chloride flocculant currently used in Zonguan’s water treatment plants.http://dx.doi.org/10.1155/2018/2768474
collection DOAJ
language English
format Article
sources DOAJ
author Awa Kangama
Defang Zeng
Xu Tian
Jinfu Fang
spellingShingle Awa Kangama
Defang Zeng
Xu Tian
Jinfu Fang
Application of Chitosan Composite Flocculant in Tap Water Treatment
Journal of Chemistry
author_facet Awa Kangama
Defang Zeng
Xu Tian
Jinfu Fang
author_sort Awa Kangama
title Application of Chitosan Composite Flocculant in Tap Water Treatment
title_short Application of Chitosan Composite Flocculant in Tap Water Treatment
title_full Application of Chitosan Composite Flocculant in Tap Water Treatment
title_fullStr Application of Chitosan Composite Flocculant in Tap Water Treatment
title_full_unstemmed Application of Chitosan Composite Flocculant in Tap Water Treatment
title_sort application of chitosan composite flocculant in tap water treatment
publisher Hindawi Limited
series Journal of Chemistry
issn 2090-9063
2090-9071
publishDate 2018-01-01
description The chitosan is a good flocculant for tap water treatment because of its properties such as faster deposition rate and higher removal efficiency for COD (organic matter), SS (suspended solids), and metal ions. However, its high price limits the use in tap water treatment. In this paper, in order to reduce costs, chitosan (CTS), polyaluminum chloride (CF-PAC), and modified rectorite (Al(OH)3 + HCl) were combined to prepare the flocculant for tap water treatment. In order to get the optimal composite flocculant formula, first, we combined these flocculants in two-by-two schema and then we combined all the three flocculants together with various dosing amounts. Through comparison between different combination schemas, the best formula of the composite chitosan flocculant was found to be CTS (ml) : CF-PAC (ml) : modified rectorite (Al(OH)3 + HCl) (ml) = 1 : 30 : 5, with a turbidity removal rate of 96.38% and a removal rate of aluminum up to 80.1%, while the treatment cost is the lowest. In addition, we have designed a cost-effective method for the treatment cost evaluation. As raw water, we used water from the Han River, which is used as raw water at Zonguan Waterworks. In order to show the effectiveness of our optimal composite chitosan formula, we have compared our treatment results to those of the aluminum polyaluminum chloride flocculant currently used in Zonguan’s water treatment plants.
url http://dx.doi.org/10.1155/2018/2768474
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AT defangzeng applicationofchitosancompositeflocculantintapwatertreatment
AT xutian applicationofchitosancompositeflocculantintapwatertreatment
AT jinfufang applicationofchitosancompositeflocculantintapwatertreatment
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