Ferrate treatment for inactivation of bacterial community in municipal secondary effluent

被引:39
作者
Gombos, Erzsebet [3 ]
Felfoeldi, Tamas [1 ,3 ]
Barkacs, Katalin [3 ]
Vertes, Csaba [2 ]
Vajna, Balazs [1 ]
Zaray, Gyula [3 ]
机构
[1] Eotvos Lorand Univ, Dept Microbiol, H-1117 Budapest, Hungary
[2] Ferrate Treatment Technol Cent Europe Ltd, H-1025 Budapest, Hungary
[3] Eotvos Lorand Univ, Cooperat Res Ctr Environm Sci, H-1117 Budapest, Hungary
关键词
Ferrate; Chlorine gas; Inactivation; Chlorine-resistant bacteria; Secondary effluent; WASTE-WATER-TREATMENT; POTASSIUM FERRATE(VI); DISINFECTION; OXIDATION; IDENTIFICATION; CHLORINE; PROGRESS; FE(VI);
D O I
10.1016/j.biortech.2011.12.053
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
This paper demonstrates the effect of ferrate [Fe(VI)-compound], an environmental friendly multi-purpose reagent, in municipal secondary effluent treatment. The purpose was to study the inactivation capability of ferrate and for the first time to compare the effect and efficiency of Fe(VI) with the widely used disinfectant, chlorine gas on the indigenous bacterial community in the case of secondary effluents. The most probable number technique (MPN) was applied for the determination of cultivable heterotrophic bacterial abundance and terminal restriction fragment length polymorphism (T-RFLP) analysis for comparing bacterial communities. The study demonstrated that (i) ferrate and chlorine had different effect on the total bacterial community of secondary effluents, (ii) low ferrate dose [5 mg L-1 Fe(VI)] was sufficient for >99.9% reduction of indigenous bacteria, and (iii) a similar dosage was also effective in the inactivation of chlorine-resistant bacteria. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:116 / 121
页数:6
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