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CLC number: TU991

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Received: 2007-01-22

Revision Accepted: 2007-05-20

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Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.11 P.1826~1830

http://doi.org/10.1631/jzus.2007.A1826


Removal of cyclops in pre-oxidizing cooperation water treatment process


Author(s):  LIU Dong-mei, CUI Fu-yi, WU Ya-qin, LIN Tao, ZHANG Min, YU Ming-xue

Affiliation(s):  School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; more

Corresponding email(s):   mei18@hit.edu.cn

Key Words:  Cyclops of zooplankton, Water treatment, Inactivation, O3, O3/H2O2 pre-oxidation


LIU Dong-mei, CUI Fu-yi, WU Ya-qin, LIN Tao, ZHANG Min, YU Ming-xue. Removal of cyclops in pre-oxidizing cooperation water treatment process[J]. Journal of Zhejiang University Science A, 2007, 8(11): 1826~1830.

@article{title="Removal of cyclops in pre-oxidizing cooperation water treatment process",
author="LIU Dong-mei, CUI Fu-yi, WU Ya-qin, LIN Tao, ZHANG Min, YU Ming-xue",
journal="Journal of Zhejiang University Science A",
volume="8",
number="11",
pages="1826~1830",
year="2007",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2007.A1826"
}

%0 Journal Article
%T Removal of cyclops in pre-oxidizing cooperation water treatment process
%A LIU Dong-mei
%A CUI Fu-yi
%A WU Ya-qin
%A LIN Tao
%A ZHANG Min
%A YU Ming-xue
%J Journal of Zhejiang University SCIENCE A
%V 8
%N 11
%P 1826~1830
%@ 1673-565X
%D 2007
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.A1826

TY - JOUR
T1 - Removal of cyclops in pre-oxidizing cooperation water treatment process
A1 - LIU Dong-mei
A1 - CUI Fu-yi
A1 - WU Ya-qin
A1 - LIN Tao
A1 - ZHANG Min
A1 - YU Ming-xue
J0 - Journal of Zhejiang University Science A
VL - 8
IS - 11
SP - 1826
EP - 1830
%@ 1673-565X
Y1 - 2007
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2007.A1826


Abstract: 
Zooplankton cyclops propagates profusely in waterbody, cannot be effectively inactivated by conventional disinfection process, and becomes a troublesome drinking water treatment problem. In this work, the qualitative and quantitative experimental studies were carried out on inactivation of zooplankton cyclops using oxidants, such as chlorine (Cl2), chlorine dioxide (ClO2), ozone (o3), hydrogen peroxide (H2O2), ozone/hydrogen peroxide (o3/H2O2), chloramines (Cl2-NH3) and potassium permanganate (KMnO4). The influences of various factors include different oxidant dosages, organic substance contents and pH values. The results showed that currently available oxidants used all might inactivate cyclops in some extent. According to the experimental results, chlorine dioxide, ozone, ozone/hydrogen peroxide and chloramines can be selected as effective oxidants for inactivating cyclops because of their strong inactivation abilities. Then the synergic removal effects on cyclops with ozone, ozone/hydrogen peroxide pre-oxidation followed by conventional water treatment processes were investigated. The results showed that ozone and ozone/hydrogen peroxide pre-oxidation can inactivate cyclops effectively, which then can be removed thoroughly by conventional water treatment processes. Cyclops cannot appear in water after filtration with 1.65 mg/L of ozone and 6 mg/L of hydrogen peroxide, with the inactivation rate being 62% before conventional water treatment processes. Cyclops cannot appear in water after filtration with 1.8 mg/L of ozone, with the inactivation rate being 50% before conventional water treatment processes. For different oxidants, when removal rate was the best, the inactivation rate was not the same. These results may provide reference and model for actual waterworks.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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