scholarly journals Applicability and Optimal Parameters Analysis for Chemical Phosphorus Removal in a Modified Carrousel Oxidation Ditch

2017 ◽  
Vol 66 (7-8) ◽  
pp. 403-409
Author(s):  
Tao Zhang ◽  
◽  
Yonghong Zhao ◽  
Keyword(s):  
Phosphorus Removal ◽  
Oxidation Ditch ◽  
Optimal Parameters ◽  
Parameters Analysis ◽  
Carrousel Oxidation Ditch

Research on the Influence Factors of the Biological Phosphorus Removal in Carrousel Oxidation Ditch Process

2011 ◽  
Vol 356-360 ◽  
pp. 2169-2174
Author(s):  
Zhou Fang Guo ◽  
Hua Zhang ◽  
Jin Hu ◽  
Xiao Wu Huang ◽  
Yang Luo
Keyword(s):  
Phosphorus Removal ◽  
Influence Factors ◽  
Treatment Plant ◽  
Phosphorus Release ◽  
Engineering Practice ◽  
Oxidation Ditch ◽  
Biological Phosphorus Removal ◽  
Important Indicator ◽  
Anaerobic Zone ◽  
Carrousel Oxidation Ditch

Abstract: 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.

Effect of SRT on Nitrogen and Phosphorus Removal in Modified Carrousel Oxidation Ditch Process

2011 ◽  
Vol 396-398 ◽  
pp. 1995-2001
Author(s):  
Lian Yu
Keyword(s):  
Water Temperature ◽  
Removal Efficiency ◽  
Phosphorus Removal ◽  
Synthetic Wastewater ◽  
Oxidation Ditch ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Operation Conditions ◽  
Carrousel Oxidation Ditch

Based on a modified Carrousel oxidation ditch process acclimated with synthetic wastewater，effect of SRT on nitrogen and phosphorus removal occurred in the system was investigated. The results indicated that SRT was prominent to nitrogen and phosphorus removal. The removal efficiency of nitrogen was better with SRT extension and that the removal efficiency of phosphorus was better with SRT shortness. With the operation conditions of water temperature 30°C, SRT 11days, the removal efficiency of TN and TP reached 85.4% and 74.9%, which indicated that nitrogen and phosphorus removals were best.

Deposition pattern, effect on nitrogen removal and component analysis of deposited sludge in a carrousel oxidation ditch

2013 ◽  
Vol 52 (31-33) ◽  
pp. 6079-6087 ◽  
Author(s):  
He Li ◽  
Ji Fang-ying ◽  
Zhou Wei-wei ◽  
Xu Xuan ◽  
Chen Rui-hong ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Component Analysis ◽  
Oxidation Ditch ◽  
Deposition Pattern ◽  
Pattern Effect ◽  
Carrousel Oxidation Ditch

A Systems Choice for Wastewater Treatment Systems for Biological Treatment of Domestic Wastewater with Excessive N- and P-Removal

1991 ◽  
Vol 24 (10) ◽  
pp. 231-237
Author(s):  
W. G. Werumeus Buning ◽  
F. W. A. M. Rijnart ◽  
P. P. Weesendorp
Keyword(s):  
Phosphorus Removal ◽  
Biological Treatment ◽  
Domestic Wastewater ◽  
Phosphate Removal ◽  
Oxidation Ditch ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Effluent Standards ◽  
Wastewater Treatment Systems ◽  
P Removal

To meet two levels of nitrogen and phosphorus removal (effluent standards Ntot 20 and 10 mg/l and Ptot 2 and 1 mg/l respectively) various systems were compared in a desk study. After a cost estimate and an assessment f the advantages and drawbacks, the oxidation ditch with biological by pass phosphate removal turned out to be the best system.

Research on Intensive Nutrients Removal of the Low C/N Sewage

2012 ◽  
Vol 550-553 ◽  
pp. 2142-2145 ◽  
Author(s):  
Gao Shun Qiu ◽  
Ling Feng Qiu ◽  
Jian Zhang ◽  
Yi Ming Chen
Keyword(s):  
Sewage Treatment ◽  
Effective Theory ◽  
Utilization Rate ◽  
Nutrients Removal ◽  
Oxidation Ditch ◽  
Nitrogen And Phosphorus ◽  
Sewage Treatment Plants ◽  
Urban Sewage ◽  
Effective Removal ◽  
Carrousel Oxidation Ditch

This paper was based on Carrousel oxidation ditch, which was common in the urban sewage treatment plants. With the effect of SND in the oxidation ditch, it was accomplished the effective removal for nitrogen and phosphorus of urban sewage with low C/N, while adopting point-aeration and brush flow, combining with the operation parameters adjustment. Under the condition of low dissolved oxygen (DO), the phenomenon of simultaneous nitrification and denitrification was obvious in macro and micro environments. And compared with the traditional process, this process increased the proportion of organics up to 51% in the ditch, which raised utilization rate of organics. Based on this to establish the kinetics model of TN removal, it could control the concentration of TN in the effluent effectively by adjusting HRT, MLSS and other parameters in the oxidation ditch, which would provide effective theory basis for optimization and adjustment of the process

Evaluation of a novel oxidation ditch system for biological nitrogen and phosphorus removal from domestic sewage

2010 ◽  
Vol 62 (8) ◽  
pp. 1745-1754 ◽  
Author(s):  
X. Chen ◽  
T. Fujiwara ◽  
K. Ohtoshi ◽  
S. Inamori ◽  
K. Nakamachi ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Phosphorus Removal ◽  
Domestic Sewage ◽  
Control Technology ◽  
Oxidation Ditch ◽  
Anoxic Zone ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Do Control ◽  
Biological Nitrogen

A novel oxidation ditch system using anaerobic tanks and innovative dual dissolved oxygen (DO) control technology is proposed for biological nitrogen and phosphorus removal from domestic sewage. A continuous bench-scale experiment running for more than 300 days was performed to evaluate the system. Monitoring and controlling the airflow and recirculation flow rate independently using DO values at two points along the ditch permitted maintenance of aerobic and anoxic zone ratios of around 0.30 and 0.50, respectively. The ability to optimize aerobic and anoxic zone ratios using the dual DO control technology meant that a total nitrogen removal efficiency of 83.2–92.9% could be maintained. This remarkable nitrogen removal performance minimized the nitrate recycle to anaerobic tanks inhibiting the phosphorus release. Hence, the total phosphorus removal efficiency was also improved and ranged within 72.6–88.0%. These results demonstrated that stabilization of the aerobic and anoxic zone ratio by dual DO control technology not only resulted in a marked improvement of nitrogen removal, but it also enhanced phosphorus removal.

Anoxic phosphorus removal in a pilot scale anaerobic-anoxic oxidation ditch process

2009 ◽  
Vol 3 (1) ◽  
pp. 106-111 ◽  
Author(s):  
Hongxun Hou ◽  
Shuying Wang ◽  
Yongzhen Peng ◽  
Zhiguo Yuan ◽  
Fangfang Yin ◽  
...  
Keyword(s):  
Phosphorus Removal ◽  
Pilot Scale ◽  
Oxidation Ditch
Sign in / Sign up

Export Citation Format

Share Document