Study on anoxic-oxic process treating for dioscorea zingiberensis wastewater

Author

Lu, Yanjun ; Guo, Jifeng

Author_Institution

Sch. of Civil Eng., Xi´an Technol. Univ., Xi´an, China

Volume

2

fYear

2011

Firstpage

1417

Lastpage

1420

Abstract

The purpose of this paper was to investigate the characteristics of anoxic-oxic (A/O) process treating for dioscorea zingiberensis wastewater. Calcium oxide was added into the wastewater to adjust the pH value in the pretreatment, the 0.45g/L calcium oxide concentration was chosen as the optimum concentration. The average B/C (BOD/COD) value in the influent of A reactor was 0.35, and after the treatment, the average B/C value was 0.5. The results showed that the biodegradability of the wastewater was improved in A tank. The problems of foam, white sludge and sludge bulking also were discussed in the paper. The ammonia nitrogen and total nitrogen removal rate were 87.7% and 77.5% by the A/O process, the results showed that the A/O process had a good effect to nitrogen removal and the A reactor A/O played the major role in the nitrogen removal.

Keywords

ammonia; environmental degradation; foams; nitrogen; pH; sludge treatment; toxicology; vegetation; wastewater treatment; A/O process; BOD value; COD value; ammonia nitrogen; anoxic-oxic process; calcium oxide concentration; dioscorea zingiberensis wastewater treatment; foam; influent; pH value; sludge bulking; total nitrogen removal rate; wastewater biodegradability; white sludge; Calcium; Effluents; Inductors; Microorganisms; Nitrogen; Wastewater; anoxic-oxic process; dioscorea zingiberensis wastewater; nitrogen removal;

fLanguage

English

Publisher

ieee

Conference_Titel

Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on

Conference_Location

Xi´an

Print_ISBN

978-1-61284-339-1

Type

conf

DOI

10.1109/ISWREP.2011.5893288

Filename

5893288