KMnO4 pre-oxidation for Microcystis aeruginosa removal by a low dosage of flocculant

被引：34
|
作者：
Wang, Hong-Qiang [1 ]
Mao, Tian-Guang [4 ]
Xi, Bei-Dou [3 ]
Zhang, Lie-Yu [3 ]
Zhou, Qiao-Hong [2 ]
机构：
[1] Henan Univ Urban Construct, Sch Municipal & Environm Engn, Pingdingshan 467036, Peoples R China
[2] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
[3] Chinese Res Inst Environm Sci, Lab Water Environm Syst Engn, Beijing 100012, Peoples R China
[4] Shenyang Jianzhu Univ, Sch Municipal & Environm Engn, Shenyang 110168, Peoples R China
来源：
ECOLOGICAL ENGINEERING | 2015年 / 81卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
KMnO4; Chitosan; Autoclaved brick powder; Flocculant; Microcystis aeruginosa; POTASSIUM-PERMANGANATE; WATER-TREATMENT; OXIDATION; COAGULATION; KINETICS; CHITOSAN; GROWTH; AID;
D O I：
10.1016/j.ecoleng.2015.04.015
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
The effects of the flocculant composed of autoclaved fly-ash brick and chitosan for algae Microcystis aeruginosa removal were investigated. The results showed that when 1 mL flocculant was added in 25 mL algae suspension, which initial density was 106 cells/mL, the removal rate of algae reached 88.4%. In order to enhance the removal efficiency, pre-oxidation with KMnO4 was studied. The results indicated that it could improve algae coagulation removal by 9.44% when it was pre-oxidized by KMnO4 with the concentration of 0.9 mg/L. The cells of M. aeruginosa sunk quickly, thus the algal cells were removed completely. In conclusion, the combined flocculant owns the advantages of low concentration, short reaction time, and could be employed for algae control. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：298 / 300
页数：3
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