TY - GEN
T1 - Research on the influence factors of the biological phosphorus removal in Carrousel oxidation ditch process
AU - Guo, Zhoufang
AU - Zhang, Hua
AU - Hu, Jin
AU - Huang, Xiaowu
AU - Luo, Yang
PY - 2012
Y1 - 2012
N2 - The concentration of total phosphorus(P-tot)in effluent is an important indicator of the effect of wastewater treatment plant(WWTP), excessive discharge of phosphorus will result in the tender eutrophication of natural water and other ecological pollution problems. In this paper, Qilidian WWTP in Guilin for the study object, researched Carrousel oxidation ditch process of the plant DO, pH, nitrate, BOD5 and P-tot in influent, and P-tot in influent and in effluent of the final clarifier, systems analyzed the factors and reasons affecting phosphorus removal. The result of the research shows itself as follows: the dissolved oxygen (DO) in oxidation ditch anaerobic zone above 0.5mg/l and at the end of the aerobic zone up to 3.87mg/l are not suitable for phosphorus accumulating organisms (PAOs) to release phosphorus; in the influent, B0D5/P-tot<20, carbon source used for PAOs in the sewage is insufficient; the concentration of P-tot in the effluent is higher than that in the influent, there occurs an obvious phenomenon of phosphorus release in the final clarifier. In addition, the pH in oxidation ditch ranges from 6.82 to7.19 and the concentration of nitrate in anaerobic zone below 0.2mg/l are suitable for the phosphorus removal process. This research provide technical support for the similar oxidation ditch process of upgrading and transformation,and have a higher value in engineering practice.
AB - The concentration of total phosphorus(P-tot)in effluent is an important indicator of the effect of wastewater treatment plant(WWTP), excessive discharge of phosphorus will result in the tender eutrophication of natural water and other ecological pollution problems. In this paper, Qilidian WWTP in Guilin for the study object, researched Carrousel oxidation ditch process of the plant DO, pH, nitrate, BOD5 and P-tot in influent, and P-tot in influent and in effluent of the final clarifier, systems analyzed the factors and reasons affecting phosphorus removal. The result of the research shows itself as follows: the dissolved oxygen (DO) in oxidation ditch anaerobic zone above 0.5mg/l and at the end of the aerobic zone up to 3.87mg/l are not suitable for phosphorus accumulating organisms (PAOs) to release phosphorus; in the influent, B0D5/P-tot<20, carbon source used for PAOs in the sewage is insufficient; the concentration of P-tot in the effluent is higher than that in the influent, there occurs an obvious phenomenon of phosphorus release in the final clarifier. In addition, the pH in oxidation ditch ranges from 6.82 to7.19 and the concentration of nitrate in anaerobic zone below 0.2mg/l are suitable for the phosphorus removal process. This research provide technical support for the similar oxidation ditch process of upgrading and transformation,and have a higher value in engineering practice.
KW - Carrousel oxidation ditch
KW - Influence factor
KW - The biological phosphorus removal
UR - http://www.scopus.com/inward/record.url?scp=80555128826&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.356-360.2169
DO - 10.4028/www.scientific.net/AMR.356-360.2169
M3 - 会议稿件
AN - SCOPUS:80555128826
SN - 9783037852675
T3 - Advanced Materials Research
SP - 2169
EP - 2174
BT - Progress in Environmental Science and Engineering
T2 - 2011 International Conference on Energy, Environment and Sustainable Development, ICEESD 2011
Y2 - 21 October 2011 through 23 October 2011
ER -