Comparative Study of Different Activated Slags on Phosphate Removal

Author

Wang, Guangwei ; Qiu, Liping ; Li, Yanbo ; Guo, Chunhui ; Ma, Jing ; Zhang, Shoubin ; Zhai, Xuedong ; Ma, Jun

Author_Institution

Sch. of Civil Eng. & Archit., Univ. of Jinan, Jinan, China

fYear

2011

fDate

19-20 Feb. 2011

Firstpage

694

Lastpage

697

Abstract

A comparative study on phosphate removal between activated steel slag and blast furnace slag was investigated. The efficiency of different slags before and after activated for phosphate removal were also evaluated. The results show that the slags activated by hydrothermal treatment are more efficient than raw slags in phosphate removal. The activated slags could be reused for several times and the phosphate removal efficiency could be guaranteed by increasing there action time towards to different reused times. Compared with activated pulverized slags, the activated granular slags could be reused for a longer time for a given initial phosphate concentration. The results suggest that the activated granular slags may be effective materials for phosphate removal. The phosphate removal by activated slag was mainly through chemical precipitation.

Keywords

blast furnaces; precipitation (physical chemistry); slag; steel; activated granular slags; activated pulverized slags; activated slags; activated steel slag; blast furnace slag; chemical precipitation; hydrothermal treatment; phosphate concentration; phosphate removal efficiency; Blast furnaces; Calcium; Chemicals; Slag; Steel; Wastewater; activated slag; calcium phosphate; hydrothermal treatment; phosphate removal;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Distributed Control and Intelligent Environmental Monitoring (CDCIEM), 2011 International Conference on

Conference_Location

Changsha

Print_ISBN

978-1-61284-278-3

Electronic_ISBN

978-0-7695-4350-5

Type

conf

DOI

10.1109/CDCIEM.2011.436

Filename

5747911