Appropriate Lab Scale Oxidation Ditch Tank for Cafeteria Building Wastewater Treatment

2014 ◽  
Vol 1 (1) ◽  
Keyword(s):  
Wastewater Treatment ◽  
Oxidation Ditch

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

A comprehensive approach for diagnosing opportunities for improving the performance of a WWTP

2016 ◽  
Vol 74 (12) ◽  
pp. 2935-2945 ◽  
Author(s):  
C. Silva ◽  
J. Saldanha Matos ◽  
M. J. Rosa
Keyword(s):  
Wastewater Treatment ◽  
Economic Performance ◽  
Wastewater Treatment Plants ◽  
Capacity Utilization ◽  
Energy Performance ◽  
Comprehensive Approach ◽  
Fecal Coliforms ◽  
Treated Wastewater ◽  
Oxidation Ditch ◽  
Excellent Performance

High quality services of wastewater treatment require a continuous assessment and improvement of the technical, environmental and economic performance. This paper demonstrates a comprehensive approach for benchmarking wastewater treatment plants (WWTPs), using performance indicators (PIs) and indices (PXs), in a ‘plan-do-check-act’ cycle routine driven by objectives. The performance objectives herein illustrated were to diagnose the effectiveness and energy performance of an oxidation ditch WWTP. The PI and PX results demonstrated an effective and reliable oxidation ditch (good–excellent performance), and a non-reliable UV disinfection (unsatisfactory–excellent performance) related with influent transmittance and total suspended solids. The energy performance increased with the treated wastewater volume and was unsatisfactory below 50% of plant capacity utilization. The oxidation ditch aeration performed unsatisfactorily and represented 38% of the plant energy consumption. The results allowed diagnosing opportunities for improving the energy and economic performance considering the influent flows, temperature and concentrations, and for levering the WWTP performance to acceptable–good effectiveness, reliability and energy efficiency. Regarding the plant reliability for fecal coliforms, improvement of UV lamp maintenance and optimization of the UV dose applied and microscreen recommissioning were suggested.

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