Modelling approach for high flow rate in wastewater treatment operation

2002 ◽  
Vol 1 (4) ◽  
pp. 275-291 ◽  
Author(s):  
A G El-Din ◽  
Daniel W Smith
Keyword(s):  
Wastewater Treatment ◽  
Flow Rate ◽  
High Flow ◽  
High Flow Rate ◽  
Modelling Approach

Utilization of Hydro-Turbines in Wastewater Treatment Plants (WWTPs)

2018 ◽  
Author(s):  
Ahmad I. Abbas ◽  
Mohammad D. Qandil ◽  
Muhannad R. Al-Haddad ◽  
Mandana S. Saravani ◽  
Ryoichi S. Amano
Keyword(s):  
Wastewater Treatment ◽  
Flow Rate ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Optimal Choice ◽  
High Flow ◽  
High Flow Rate ◽  
Hydro Turbine ◽  
Hydro Turbines

Wastewater treatment plants (WWTPs) are a significant energy consumer, yet there are several opportunities of implementing on-site power generation systems. Within the treatment process, the high flow rate of effluent is produced and discharged to a nearby water body by gravity. Thus, hydro turbines can be utilized to generate power in such application due to a difference in elevation and high flow rate. This paper presents a case study of introducing a hydro turbine in wastewater treatment plant in Wisconsin and evaluating the power output in addition to determining the energy savings. The wastewater treatment plant considered in this study has an effluent flow rate of 190 MGD (million gallons per day) and elevation difference of 3 meters (10 feet) between the final stage of treatment and the discharge point. Based on the aforementioned parameters; hubless rim-drive Kaplan type hydro turbine (RDT) is the optimal choice to be used in such application. The RDT is designed and optimized by using in-house code. A computational fluid dynamics (CFD) software is applied to evaluate the performance of the proposed model, and the system is simulated through HOMER software to validate the results generated by the CFD. The expected savings is estimated to be 1,564 MWh/year.

Utilization of Hydroturbines in Wastewater Treatment Plants

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Ahmad I. Abbas ◽  
Mohammad D. Qandil ◽  
Muhannad R. Al-Haddad ◽  
Mandana S. Saravani ◽  
Ryoichi S. Amano
Keyword(s):  
Wastewater Treatment ◽  
Flow Rate ◽  
Energy Savings ◽  
Wastewater Treatment Plants ◽  
Optimal Choice ◽  
High Flow ◽  
High Flow Rate ◽  
Proposed Model ◽  
Effluent Flow Rate ◽  
Power Generation Systems

Wastewater treatment plants (WWTPs) are a significant energy consumer, yet there are several opportunities for implementing on-site power generation systems. Within the treatment process, the high flow rate of effluent is produced and discharged to a nearby water body by gravity. Thus, hydroturbines can be utilized to generate power in such an application due to a difference in elevation and high flow rate. This paper presents a case study of introducing a hydroturbine in a WWTP in Wisconsin and evaluating the power output in addition to determining the energy savings. The WWTP considered in this study has an effluent flow rate of 190 MGD (million gallons per day) and elevation difference of 3 m (10 ft) between the final stage of treatment and the discharge point. Based on the parameters above; hubless rim-drive Kaplan type hydroturbine (RDT) is the optimal choice to be used in such an application. The RDT is designed and optimized by using in-house code. A computational fluid dynamics (CFD) software is applied to evaluate the performance of the proposed model, and the system is simulated through homer software to validate the results generated by the CFD. The expected savings is estimated to be 1564 MWh/yr.

scholarly journals The Enhancement of Pre-Storage Filtration Efficiency for the Rainwater Harvesting System in Malaysia

2018 ◽  
Vol 152 ◽  
pp. 02015
Author(s):  
Yoong Sion Ong ◽  
Ken Sim Ong ◽  
Y.k. Tan ◽  
Azadeh Ghadimi
Keyword(s):  
Stainless Steel ◽  
Flow Rate ◽  
Rainwater Harvesting ◽  
Filtration Efficiency ◽  
High Flow ◽  
High Flow Rate ◽  
Water Tank ◽  
Filtration System ◽  
Filter Screen ◽  
Water Piping

A conventional design of rainwater harvesting system collects and directs the rainwater through water piping from roof of building to the water storage. The filtration system which locates before the water tank storage and first flush bypass system is the main focus of the research. A filtration system consists of a control volume of filter compartment, filter screen (stainless steel mesh) and water piping that direct the water flow. The filtration efficiency of an existing filter “3P Volume Filter VF1” by industrial company is enhanced. A full scale filter design prototype with filter screen of 1000 μm stainless steel metal mesh is tested to compare with the original filter system design. Three types of water inlet setups are tested. Among the proposed water inlet setups, the 90° inlet setup with extension provides the best filtration rate per unit time, following by the 45° inlet setup. The 45° and 90° inlet setup has similar filtration efficiency at low to medium flow rate while 45° inlet setup has better efficiency at high flow rate. The filtration efficiency with the 90° inlet setup with extension is observed to maintain at highest value at medium to high flow rate. The overall filtration performance achieved by the 90° inlet setup with extension at low to high flow rate is between 34.1 to 35.7%.

Confirmation of high flow rate chaos in the Belousov-Zhabotinskii reaction

1992 ◽  
Vol 96 (3) ◽  
pp. 1228-1233 ◽  
Author(s):  
Laszlo Gyorgyi ◽  
Richard J. Field ◽  
Zoltan Noszticzius ◽  
William D. McCormick ◽  
Harry L. Swinney
Keyword(s):  
Flow Rate ◽  
High Flow ◽  
High Flow Rate ◽  
Belousov Zhabotinskii Reaction

High-flow rate miniature digital valve system

2017 ◽  
Vol 18 (3) ◽  
pp. 188-195 ◽  
Author(s):  
Tapio Lantela ◽  
Matti Pietola
Keyword(s):  
Flow Rate ◽  
High Flow ◽  
High Flow Rate ◽  
Valve System

Reliability Analysis of High-Power and High-Flow-Rate Subsea ESP Systems in Jubarte

2019 ◽  
Author(s):  
Luis Vergara ◽  
Francisco Bacellar ◽  
Marcelo Neves ◽  
Arthur Watson ◽  
Grant Harris
Keyword(s):  
Reliability Analysis ◽  
Flow Rate ◽  
High Power ◽  
High Flow ◽  
High Flow Rate

scholarly journals High-Flow-Rate Impinger for the Study of Concentration, Viability, Metabolic Activity, and Ice-Nucleation Activity of Airborne Bacteria

2017 ◽  
Vol 51 (19) ◽  
pp. 11224-11234 ◽  
Author(s):  
Tina Šantl-Temkiv ◽  
Pierre Amato ◽  
Ulrich Gosewinkel ◽  
Runar Thyrhaug ◽  
Anaïs Charton ◽  
...  
Keyword(s):  
Flow Rate ◽  
Metabolic Activity ◽  
Ice Nucleation ◽  
High Flow ◽  
High Flow Rate ◽  
Airborne Bacteria ◽  
Nucleation Activity ◽  
Ice Nucleation Activity
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