Adsorption of Ammonium to Biologically Aerated Filter Backwashed Sludge

Author

Hu Hongbo ; Han Hongjun ; Jie Yao

Author_Institution

State Key Lab. of Urban Water Resources & Environ., Harbin Inst. of Technol., Harbin, China

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

4

Abstract

Ammonium adsorption characteristics of the denitrifying filter and the biologically aerated filter backwashed sludge and influence factors such as sludge concentration, sludge activity and effect of chemical coagulants were investigated. Ammonium was found to be adsorbed to both kinds of backwashed sludge. The backwashed sludge in biologically aerated filter adsorbed more ammonium than that in denitrifying filter in the same concentration of the sludge. The adsorbed amount of ammonium is increased along with the increment of backwashed sludge concentration, and the adsorbed amount of ammonium reach 1.03mg/L to 4.35mg/L in denitrifying filter and 1.95mg/L to 6.21mg/L in BAF filter when the sludge concentration is increased from 500mg/L to 3000mg/L. Adsorption performance of sterilized sludge and original sludge is similar. The impact of chemical coagulants on the adsorption capacity of backwashed sludge was studied both in denitrifying filter and biologically aerated filter.

Keywords

adsorption; ammonium compounds; filtration; sludge treatment; NH₄; ammonium adsorption characteristics; biologically aerated filter backwashed sludge; chemical coagulants; denitrifying filter; mass 1.03 mg to 4.35 mg; mass 1.95 mg to 6.21 mg; mass 500 mg to 3000 mg; sludge activity; sludge concentration; Board of Directors; Chemical technology; Filters; Filtration; Glass; Inductors; Solids; Testing; Wastewater treatment; Water resources;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5515555

Filename

5515555