Journal of Korean Society of Water and Wastewater (상하수도학회지)
- Volume 10 Issue 3
- /
- Pages.73-82
- /
- 1996
- /
- 1225-7672(pISSN)
- /
- 2287-822X(eISSN)
Enbancement of Treatement Efficiency in a Biological Nutrient Removal Process by addition of Volatile Fatty Acids
휘발성 지방산의 주입을 통한 생물학적 영양염류 제거공정의 효율증진에 관한 연구
- Published : 1996.06.15
Abstract
The removal efficiencies of organic substrates, nitrogen and phosphorus in the anaerobic-aerobic biological phosphorus removal process were investigated by addition of acetic acid, propionic acid and butyric acid which are normal volatile fatty acids contained in anaerobic digester supernatants. Substrate utilization coefficients for the phosphorus release and uptake were also estimated. The effect of a VFA, which showed higher phosphorus removal efficiency than the other VFAs did, was also studied in an anaerobic-aerobic-anoxic biological nutrient removal process. For the anaerobic-aerobic process added by VFA, the phosphorus removal efficiencies were up to about 68%, 55% and 61% for the reactors of acetic acid, propionic acid and butyric acid added, respectively, which indicates the efficiencies were increased by about 8-21%, comparing to that of 47% for the reactor with no VFA added. There were no significant difference in removal efficiencies for organic substrate and
Keywords