Impact of intermittent aeration mode on enhancement of biological nutrient removal by the novel prototype IT/OD-MBR(Inclined Tube/Oxidation-Ditch Membrane Bioreactor) for high-rise building's wastewater recycling

2017 ◽  
Vol 124 ◽  
pp. 36-44 ◽  
Author(s):  
Chavalit Ratanatamskul ◽  
Jiranthanin Kongwong
Keyword(s):  
Nutrient Removal ◽  
Membrane Bioreactor ◽  
Biological Nutrient Removal ◽  
The Novel ◽  
Oxidation Ditch ◽  
Intermittent Aeration ◽  
High Rise ◽  
Inclined Tube ◽  
Wastewater Recycling

Alternatives for upgrading the Wilderness Wastewater Treatment Plant for biological nutrient removal

2004 ◽  
Vol 48 (11-12) ◽  
pp. 453-462
Author(s):  
E.U. Cokgor ◽  
C.W. Randall
Keyword(s):  
Wastewater Treatment ◽  
Nutrient Removal ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Biological Nutrient Removal ◽  
Oxidation Ditch ◽  
Concentric Ring ◽  
Annual Average ◽  
Flow Capacity ◽  
Ring Oxidation

The Wilderness Wastewater Treatment Plant (WWTP) located in Orange County, Virginia is a four concentric ring oxidation ditch activated sludge system with a rated capacity of 1,935 m3/day. The three outer rings are used for wastewater treatment and the inner ring is used as an aerobic digester. The flow capacity has been increased from 1,935 to 3,760 m3/d, however, the desired design capacity has since been increased to 3,870 m3/d, and there are plans to eventually expand to approximately 4,840 m3/d with improved nitrogen removal. The design goal for the planned upgrade is to discharge an effluent that contains less than 10 mg/l total nitrogen (TN) at all times, with an annual average of 8 mg/l or less. In this study, the pre-upgrade performance of the Wilderness Wastewater Treatment Plant was evaluated and several modifications were recommended for the incorporation of biological nutrient removal (BNR).

scholarly journals Effect of intermittent aeration cycle on nutrient removal and microbial community in a fluidized bed reactor-membrane bioreactor combo system

2014 ◽  
Vol 156 ◽  
pp. 195-205 ◽  
Author(s):  
Awoke Guadie ◽  
Siqing Xia ◽  
Zhiqiang Zhang ◽  
Jemaneh Zeleke ◽  
Wenshan Guo ◽  
...  
Keyword(s):  
Microbial Community ◽  
Fluidized Bed ◽  
Nutrient Removal ◽  
Membrane Bioreactor ◽  
Fluidized Bed Reactor ◽  
Intermittent Aeration

Efficient Biological Nutrient Removal in a Membrane Bioreactor Using Denitrifying Phosphorus Removal and Simultaneous Nitrification and Denitrification

2014 ◽  
Vol 507 ◽  
pp. 693-701
Author(s):  
Jiu Yi Li ◽  
Nian Peng Wu ◽  
Jin Li ◽  
Ai Min Wang ◽  
Yong Chen ◽  
...  
Keyword(s):  
Nutrient Removal ◽  
Phosphorus Removal ◽  
Membrane Bioreactor ◽  
Phosphorus Release ◽  
Biological Nutrient Removal ◽  
Return Flow ◽  
Denitrifying Phosphorus Removal ◽  
Bioreactor System ◽  
Removal Processes ◽  
The Impact

Biological nutrient removal (BNR) is generally integrated in municipal wastewater treatment plants to alleviate the impact of treated effluent on receiving watersheds. This paper studies the performance of BNR in a membrane bioreactor system consisting of anaerobic, anoxic, micro-aerobic and aerobic compartments treating a synthetic wastewater containing low organic matters. The membrane bioreactor system designed an anti-stream, stepwise return flow scheme to produce ideal conditions for the occurrence of simultaneous nitrification and denitification and denitrifying phosphorus removal processes. The proposed membrane reactor system has established higher biomass concentrations and ideal environments for biological nutrient removal processes, which results in high nutrient removal efficiencies treating low organic wastewaters. Four compartment configurations in the reactor system minimized the impact of oxidized nitrogen species in return flow on phosphorus release in the anaerobic tank and the anti-stream, stepwise return flow scheme encouraged the utilization of nitrate as the electronic acceptor in phosphorus uptake in the micro-aerobic tank. Denitrifying phosphorus removal and simultaneous nitrification and denitrification processes are the main mechanisms responsible for efficient nutrient removal. High phosphorus release activities and high phosphate concentration in the anaerobic tank make it is potentially feasible to recover phosphorus resource from wastewater.

Evaluation of a novel oxidation ditch system with dual DO control technology for biological nutrient removal by mass balance analysis

Desalination ◽  
2012 ◽  
Vol 286 ◽  
pp. 24-33 ◽  
Author(s):  
Xiaoqiang Chen ◽  
Taku Fujiwara ◽  
Kazuo Nakamachi ◽  
Yukio Kawaguchi ◽  
Fumitake Nishimura ◽  
...  
Keyword(s):  
Mass Balance ◽  
Nutrient Removal ◽  
Biological Nutrient Removal ◽  
Control Technology ◽  
Oxidation Ditch ◽  
Balance Analysis ◽  
Do Control ◽  
Mass Balance Analysis
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