In waste water pumping stations, centrifugal pumps driven by induction motors are used to transport the effluent collected from residential and commercial buildings to the treatment plants. Due to the varying nature of collected effluent rate, means of pump flow control should be applied. Recently, there is an engineering debate on either recommending frequency converters control or on-and-off ...

The analysis of the reconstructed pumping stations showed that most stations, despite their specific features (commercial operation year, different sources water intake, differences in designs hydraulic structures, connection schemes units and pressure communications), have a fairly standard set reconstruction works: main structures irrigation are more or less satisfactory condition, need parti...

The east Delta horizontal expansion reclamation project is one of the Egyptian reclamation projects which was implemented in 1981. The project area is approximately equal to 366,500 Feddans. It's located in Ismalia Governorate at kilo 96.5 Cairo-Ismalia road. The irrigation system in this project depends on pumping stations at the right bank of Ismalia Canal through pipelines. The pipelines wer...

water conveyance through pumping takes a lot of energy and cost and therefore, its application should be accompanied by exact design of pumping station as well as correct positions of pumps and their subsidiary apparatus. sumps are designed for many pumping stations and often face the problems of vortex and irregular flows. therefore an investigation of the general flow pattern in sumps in diff...

Sewer systems are large-scale systems that collect and transport stormwater and sanitary sewage out of urban areas. Sewer systems are mainly operated using pumping stations and pollutants are removed from sewage by treatment plants before water is released into the environment. When a sewer overflow occurs, e.g., caused by a strong rainfall, sewage is discharged directly into the environment wi...

A methodology, based on the concept of Affinely Adjustable Robust Optimization, for optimizing daily operation of pumping stations is proposed, which takes into account the fact that a water distribution system in reality is unavoidably affected by uncertainties. For operation control, the main source of uncertainty is the uncertainty in the demand. Traditional methods for optimizing dynamical ...

Two-stage decomposition-dynamic programming aggregation method has been first proposed and introduced to solve the mathematical model of daily optimal operation for parallel pumping stations with adjustable-blade units. Taking minimal daily electricity cost of single pump station as objective function, the water quantity pumped by each station as coordinated variable, by means of the type of th...