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Weir Flow Articles & Analysis
16 articles found
A pH balancing tank and wastewater monitoring systems for Thwaites, one of the UK’s oldest traditional ...
If the distance between lamella clarifiers and sludge settling zone is too short the water flow accelerates and carries out sludge particles. Another trick for a more equal flow pattern in the sludge settling zone is to install the lamella clarifiers against the direction of the flow. In this way the water stream must change its direction to ...
However, in some applications, measuring flow with a weir is a much better choice. While weirs are also very accurate, they do require regular maintenance in order to function properly. ...
Although the flow distribution in an influent channel where the inflow is split into each treatment process in a wastewater treatment plant greatly affects the efficiency of the process, and a weir is the typical structure for the flow distribution, to the authors' knowledge, there is a paucity of research on the flow ...
Side weirs have many possible applications in the field of hydraulic engineering. ...
The Passaic Valley Sewerage Commission (PVSC) is interested in using a computational fluid dynamics (CFD) modeling approach to explore any further FST retrofit alternatives to sustain significantly higher plant influent flows, especially under wet weather conditions. In detail there is an interest in modifying and/or upgrading/optimizing the existing FSTs to handle ...
Exergy analysis of rough rice drying process in laboratory–scale plug flow fluidised bed dryer was carried out. The drying experiments were conducted to assess the effects of inlet drying air temperature, feed mass flow rate and weir height on energy efficiency, exergy destruction, exergy efficiency, entropy generation, improvement potential rate ...
Under these circumstances, it may be common for solids to carry over the clarifier weirs whenever fluctuations in flow occur. Unfortunately, this can cause a meaningful reduction in removal efficiency percentages. If the operator of an extended aeration plant periodically experiences the loss of solids over the effluent weirs, two ...
Open-channel distribution networks are subject to algal developments that can induce major disturbances such as clogging of hydraulic devices (pipes, weirs, filters, flow meters). Flushes can be used as a strategy to manage these algae developments. ...
In some cases, construction of weirs and diversion structures in river bends is inevitable. There are a number of such hydraulic structures which were installed around the river bend without considering the undesirable effects of these structures on the river morphology which resulted in serious problems like that of erosion, sedimentation and non–symmetrical distribution of ...
Side weirs are widely used to divert flows from rivers and channels. However, the hydraulic behavior of this type of weir is complex and difficult to predict accurately. Previous studies on side weirs have generally focused on side weirs in rectangular channels with a smooth bed. ...
The sludge layer will float to top of tank and be carried via water flow to a sludge weir, where it will compact and fall into a dual sloped sludge hopper. ...
Then the clarified effluent travels up through the inside of SaniTEE, and out through the keyhole weirs to discharge via the standard outlet tee piping. Gross solids can not leave the tank by the usual path, through the septic tank outlet tee, because the solids exclusion ring blocks the annular space within the outlet tee. SaniTEE works in three ways to improve the quality of ...
The environmental authority of Brandenburg entrusted gIR to carry out a trial lowering of backwater to provide a basis for the decision about the upstream reach of the river Spree between the Schmogrow weirs. 55 test measurements in 11 cross profiles were taken to determine flow velocities and flow rates for different weir ...
ABSTRACT Flow over a side weir is one of the more complex flows to simulate in one-dimensional unsteady flow analysis. ...
Products and Services Water Quality Measurement Sampling of streams, drains, reservoirs, lakes & swamps Sampling of groundwater Chemical & biological water quality measurements Profiling of reservoirs & lakes Flow Measurement Flow measurement in streams, open channels, wastewater & drainage systems Calibration of weirs & control ...