weir Articles
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Development of a discharge equation for side weirs using artificial neural networks
ABSTRACT Flow over a side weir is one of the more complex flows to simulate in one-dimensional unsteady flow analysis. Various experiments have been applied, but no agreement is apparent in the literature about the best method. In this study, an Artificial Neural Network model has been used to extract a discharge equation for side weirs which accurately estimates overflow discharges. The ...
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Four free surface algorithms for the 3D Navier–Stokes equations
Four algorithms are described for computing a steady free water surface with the solution of the three-dimensional (3D) Navier–Stokes equations. The numerical methods are used in hydraulic engineering cases, typically spillways and river modelling. The algorithms were tested against a laboratory experiment of a v-shaped broad-crested weir. The complex geometry of the weir introduced ...
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Optimise inlet condition and design parameters of a new sewer overflow screening device using numerical model
After heavy rainfall, sewer overflow spills to receiving water bodies cause serious concern for the environment, aesthetics and public health. To overcome these problems this study investigated a new self-cleansing sewer overflow screening device. The device has a sewer overflow chamber, a rectangular tank and a slotted ogee weir to capture the gross pollutants. To design an efficient screening ...
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Modelling of suspended sediment in a weir reach using EFDC model
Construction of hydraulic structures often leads to alteration of river dynamics and water quality. Suspended solids entering the upstream of the weir cause adverse effects to the hydroecological system and, therefore, it is necessary to build a modelling system to predict the changes in the river characteristics for proper water quality management. In this study, the discharges and total ...
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Hydraulic modeling: The often overlooked factor in treatment plant design
Treatment plant hydraulics is often overlooked as one of the most important aspects of treatment plant design, especially in plant upgrade scenarios where retrofitting new equipment or processes into the existing treatment train will create additional hydraulic restrictions. Many existing plants already have a minimal amount of head available for passing peak flows through the system, which can ...
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Comparing the flow dynamics and particle settling in full-scale sedimentation tanks of different lengths
The efficiency of sedimentation is dependent on settling tank design and operation, where the streamlined solid–liquid separation results in water of safe potable quality. It is therefore important that the tank design and operation are sufficiently optimised. Sedimentation tanks are commonly overdesigned, leading to unwarranted capital expenditure, and overloading. This study used ...
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Real-Time Control Optimizes Extended Aeration Processes
The population of Hillsborough County, Florida has doubled since the Valrico advanced wastewater treatment plant (AWTP) was built in 1990 to treat the sewage of several small communities west of the City of Tampa. When it began operation, the Valrico AWTP capacity was only 4 MGD; small when compared to Tampa's 96 MGD Howard F. Curren AWTP located not far to the east. But Valrico serves as a very ...
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Industrial ASBR Wastewater Treatment Facility, India - Case Study
This two (2) basin ASBR facility near Mumbai, receives a variety of industrial wastewaters collected from many factories and chemical production facilities. The 10,000 m3/d wastewater plant comprises flow metering, chemical treatment, pH correction, flow splitting, flow equalization with aeration, chemical precipitation and lamella plate clarification, two (2) basin ASBR biological treatment ...
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Case study - Industrial ASBR wastewater treatment facility, India
This two (2) basin ASBR facility near Mumbai, receives industrial wastewaters collected from a variety of factories and chemical production facilities. The 10,000 m3/d wastewater plant comprises flow metering, chemical treatment, pH correction, flow splitting, flow equalization with aeration, chemical precipitation and lamella plate clarification, two (2) basin ASBR biological treatment ...
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OSU researchers deploy Stevens equipment in study of green infrastructure treatment for groundwater runoff - Case Study
Stormwater runoff pollution is a serious issue that faces almost every urban and suburban environment. In older city infrastructure, runoff from roofs, parking lots, and streets flows directly into the sewer system and must be handled by the municipal wastewater treatment facility, increasing the amount of work the system must undertake. For the past 30 years, the infrastructure for ...
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Hydraulic modeling - Bethel Park Municipal Authority - Case Study
Treatment plant hydraulics is often overlooked as one of the most important aspects of treatment plant design, especially in plant upgrade scenarios where retrofitting new equipment or processes into the existing treatment train will create additional hydraulic restrictions. Many existing plants already have a minimal amount of head available for passing peak flows through the system, which can ...
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Water system master plan
Client: City of Fort Smith, Ark. Completion Date: 2002 Services Provided Water supply/delivery Hydraulic modeling and design Water quality analyses Water supply hydrology Flood hydrology 3-D project rendering Physical hydraulic models Spillway hydraulics GIS/GPS Design plans and specifications Construction services Project Summary Burns & McDonnell has completed a ...
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Flood modeling and mitigation measures in an Urban Environment –Victoria, Australia - Case Study
Abstract Accurate prediction of flood extents in urban catchments is extremely difficult without having a 1d/2d integrated modeling approach. The integrated flood modeling is becoming popular and a new benchmark for urban flood risk management studies. City of Glen Eira in Victoria, Australia is a developed metropolitan municipality. The council is responsible for the management of 535km of ...
By Innovyze
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Automatic Flow Control Valves Solve Raw Water Management Challenges
For all the historical and natural charm of Greenville, S.C., efforts to serve the city's water customers were hampered by raw water management challenges at a nearby reservoir. A new automatic flow control valve provided Greenville Water, City of Greenville Commission of Public Works, with a customized solution. Greenville is situated about halfway between Charlotte, N.C., and Atlanta, up ...
By Cla-Val
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Real-time control optimizes extended aeration processes - Case Study
The population of Hillsborough County, Florida has doubled since the Valrico advanced wastewater treatment plant (AWTP) was built in 1990 to treat the sewage of several small communities west of the City of Tampa. When it began operation, the Valrico AWTP capacity was only 4 MGD; small when compared to Tampa’s 96 MGD Howard F. Curren AWTP located not far to the east. But Valrico serves as a ...
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