Distribution characterization of microbial aerosols emitted from a wastewater treatment plant using the Orbal oxidation ditch process

2011 ◽  
Vol 46 (4) ◽  
pp. 910-915 ◽  
Author(s):  
Lin Li ◽  
Min Gao ◽  
Junxin Liu
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Oxidation Ditch ◽  
Orbal Oxidation Ditch

scholarly journals Isolation and characterization of organic matter-degrading bacteria from coking wastewater treatment plant

2018 ◽  
Vol 78 (7) ◽  
pp. 1517-1524 ◽  
Author(s):  
Riqiang Li ◽  
Jianxing Wang ◽  
Hongjiao Li
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Removal Rate ◽  
Treatment Plant ◽  
Coking Wastewater ◽  
Naphthalene Degradation ◽  
Isolation And Characterization ◽  
Degrading Bacteria

Abstract As a step toward bioaugmentation of coking wastewater treatment 45 bacteria strains were isolated from the activated sludge of a coking wastewater treatment plant (WWTP). Three strains identified as Bacillus cereus, Pseudomonas synxantha, and Pseudomonas pseudoaligenes exhibited high dehydrogenase activity which indicates a strong ability to degrade organic matter. Subsequently all three strains showed high naphthalene degradation abilities. Naphthalene is a refractory compound often found in coking wastewater. For B. cereus and P. synxantha the maximum naphthalene removal rates were 60.4% and 79.8%, respectively, at an initial naphthalene concentration of 80 mg/L, temperature of 30 °C, pH of 7, a bacteria concentration of 15% (V/V), and shaking speed of 160 r/min. For P. pseudoaligenes, the maximum naphthalene removal rate was 77.4% under similar conditions but at 35 °C.

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 Modelling performance of oxidation ditch in wastewater treatment plant by STOAT software

2019 ◽  
Vol 300 ◽  
pp. 032065
Author(s):  
Weiyi Wang ◽  
Chen Shi ◽  
Junfeng Yang ◽  
Ming Zeng ◽  
Zongbiao Dai ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Oxidation Ditch

scholarly journals Rheological Characterization of Sludge Coming from a Wastewater Treatment Plant

2010 ◽  
Vol 6 (4) ◽  
pp. 329-337 ◽  
Author(s):  
Daniel Novarino ◽  
Ezio Santagata ◽  
Davide Dalmazzo ◽  
Mariachiara Zanetti
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Rheological Characterization
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