Research on the Measures of Improve the Flow Pattern of the Forebay of City Intake Water Pumping Stations

2012 ◽  
Vol 170-173 ◽  
pp. 1856-1861
Author(s):  
Jian Gang Feng ◽  
Xin Li
Keyword(s):  
Flow Pattern ◽  
Water Source ◽  
Physical Models ◽  
Pump Operation ◽  
Pumping Station ◽  
Flow Recirculation ◽  
Water Pumping ◽  
Pumping Stations ◽  
Pump Inlet ◽  
Intake Water

City intake water pumping stations are restricted by bank slope conditions of water source areas and land use restrictions etc. Intake structures are difficult to be arranged in accordance with the requirements of hydraulic conditions. Therefore, adverse flow phenomena such as bias flow, recirculation and vortex are easier to generate in the forebay.The adverse flow imparts an adverse effect upon the pump inlet condition, so as to negatively influence safe operation of the pumping station. Physical models were tested according to layout characteristics of a city intake water water pumping station to research the reasons of bad flow conditions occurred in the caisson type forebay. The study found that the bottom sill in the forebay would improve the inflow pattern. The test results showed that the sump of the pumping station could effectively improve the flow pattern in the forebay and improve the efficiency of the pump operation.

scholarly journals The role of youth in water source management in Tanzania: experience of villages in the Great Ruaha River, Iringa District

Afrika Focus ◽  
2018 ◽  
Vol 31 (1) ◽  
Author(s):  
Norbert J. Ngowi ◽  
Elizabeth L. Genda ◽  
Adelaide E. Sallema
Keyword(s):  
Rural Areas ◽  
Total Population ◽  
Water Governance ◽  
Local Level ◽  
Water Source ◽  
Water Pumping ◽  
Pumping Stations ◽  
Depth Interviews ◽  
Source Management

Youth refers to the young active human resources which in 2012 constituted about 34.7% of the total population of Tanzania. However, there is a paucity of information on the role of youth in the management of water resources in the majority of the rural areas. This paper draws on the experience of the conceptual framework for water governance at the local level. The study examines the role of youth in water source management as it draws on strategies for water management in Kihanga and Migoli Villages located adjacent the Great Ruaha River of Iringa District. The Great Ruaha River covers 47% of the largest Rufiji Basin in Tanzania. A questionnaire was used to collect data from 161 youths within the surveyed households. In-depth interviews with 5 key informants and focus group(s) of 50 participants were used to supplement data that could not be obtained through surveys. The results show that 59.6% of respondents were not involved in the Water Com- mittee activities. Patrolling the sources and fetching water at night are among the major strategies used in the management of water sources and supply at least in the short term. These findings together with methods used could be replicated in other areas as they provide opportunities for the study of water governance at the local level. The study recommends the integration of young people into water committees and the establishment of water pumping stations at a suitable distance from Mtera dam to reduce degradation. Key words: Flemish, water source management, governance, Great Ruaha, institutions, vinyungu

scholarly journals The role of youth in water source management in Tanzania: experience of villages in the Great Ruaha River, Iringa District

Afrika Focus ◽  
2018 ◽  
Vol 31 (1) ◽  
pp. 153-171
Author(s):  
Norbert J. Ngowi ◽  
Elizabeth L. Genda ◽  
Adelaide E. Sallema
Keyword(s):  
Rural Areas ◽  
Total Population ◽  
Water Governance ◽  
Local Level ◽  
Water Source ◽  
Water Pumping ◽  
Pumping Stations ◽  
Depth Interviews ◽  
Source Management

Youth refers to the young active human resources which in 2012 constituted about 34.7% of the total population of Tanzania. However, there is a paucity of information on the role of youth in the management of water resources in the majority of the rural areas. This paper draws on the experience of the conceptual framework for water governance at the local level. The study examines the role of youth in water source management as it draws on strategies for water management in Kihanga and Migoli Villages located adjacent the Great Ruaha River of Iringa District. The Great Ruaha River covers 47% of the largest Rufiji Basin in Tanzania. A questionnaire was used to collect data from 161 youths within the surveyed households. In-depth interviews with 5 key informants and focus group(s) of 50 participants were used to supplement data that could not be obtained through surveys. The results show that 59.6% of respondents were not involved in the Water Committee activities. Patrolling the sources and fetching water at night are among the major strategies used in the management of water sources and supply at least in the short term. These findings together with methods used could be replicated in other areas as they provide opportunities for the study of water governance at the local level. The study recommends the integration of young people into water committees and the establishment of water pumping stations at a suitable distance from Mtera dam to reduce degradation.

scholarly journals Optimization of Energy Consumption in the Pumping Station Supplying Two Zones of the Water Supply System

Energies ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 310
Author(s):  
Martyna Świętochowska ◽  
Izabela Bartkowska
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Energy Optimization ◽  
Field Tests ◽  
Supply System ◽  
Water Supply System ◽  
Pumping Station ◽  
Water Pumping ◽  
System Pressure ◽  
Pumping Stations

Water supply pumping stations are among the main energy-consuming elements in the water supply system. The energy optimization of a pumping station can significantly affect the energy consumption of a water utility. This article deals with the energy optimization of water pumping stations. The work assumes several variants of optimization of water supply pumping stations through changes in the water supply system, pressure changes in the pumping station, and modification of the number of pumps. After analyzing the network, conducting field tests, and creating a model of the water supply network, the network was calibrated in order to reproduce the existing water network as accurately as possible. Then, a variant analysis was performed, and the best optimization method for the pumping station was selected. In two variants, there was a decrease in electricity consumption; in three there, was an increase; in one, there was no change. By connecting the DMA zones and modifying the pressure in the pumping station, the energy consumption of the pumping stations was reduced. On this basis, it was found that it is possible to optimize the water pumping station by modifying the pumping station and work related to the network layout.

Fuzzy Method Applied at Energetic and Economic Rehabilitation of Pumping Station

2021 ◽  
Author(s):  
Victorita Radulescu
Keyword(s):  
Water Supply ◽  
Industrial Development ◽  
Treatment Plant ◽  
Single Layer ◽  
Point Of View ◽  
Economic Point ◽  
Pumping Station ◽  
Water Pumping ◽  
Pumping Stations ◽  
Double Spiral

Abstract Many pumping stations require an urgent rehabilitation from hydraulic, energetic, and economic point of view, being older than 30 years. Some urban stations for the water supply are nowadays under-dimensioned compared with the necessary consumption. Such an example is the pumping station of the Buzau City, realized in 1986. Its population has grown in the last decades by about 30% due to industrial development and its water pumping station from the treatment plant is currently totally insufficient. The hydraulic losses through the control discharge valve have become too high. This pumping station ensures the water supply for the south and east part of the city. Firstly, some characteristics of the pumping station equipped with pumps 12NDS- Normal-Double spiral casing-Single-layer of 160kW and 18NDS of 400kW and 500 kW, all from domestic production, are presented. Modernization of the pumping station has started few years ago and being realized in steps, so as not interrupt the city’s water supply. To establish the optimal operating point some algorithms are presented, developed based on the experimental data and using functions with one or two independent variables. Firstly, the interpolation function is determined, followed by its numerical calculation. To establish the characteristics’ equations H = f(Q), P = f(Q), and η = f(Q) starting from experimental results obtained by direct measurements, a polynomial approximation was chosen by the method of the least squares, using the polynomials Lagrange and Bezier. For optimization, the fuzzy technique is adopted regarding the flow fusing, intervals between start and stop following some policies concerning the aggregates’ starting. For a year, the energy saved between these intervals was calculated. Finally, the obtained yields of about 90% proved that the pumps modernization adopting new functioning techniques is more advantageous in some situations than the purchase of new equipment.

Control by IoT in Drinking Water Pumping Station and Cisterns

2021 ◽  
Author(s):  
Ing. Leonardo Depetris ◽  
Ing. Damian Romani ◽  
Ing. Joaquin Gonzalez ◽  
Claudio Bottero ◽  
Maciel Rui ◽  
...  
Keyword(s):  
Drinking Water ◽  
Pumping Station ◽  
Water Pumping

Avoiding Sedimentation and Air Entrainment in Pump Sump for Wet Pit Pumping Stations

2015 ◽  
Author(s):  
Raja Abou Ackl ◽  
Andreas Swienty ◽  
Flemming Lykholt-Ustrup ◽  
Paul Uwe Thamsen
Keyword(s):  
Physical Model ◽  
Air Entrainment ◽  
Flow Patterns ◽  
Operating Conditions ◽  
Design Criteria ◽  
Flow Conditions ◽  
Pumping Station ◽  
Pumping Stations ◽  
Pump Sump ◽  
Pump Stations

In many places lifting systems represent central components of wastewater systems. Pumping stations with a circular wet-pit design are characterized by their relatively small footprint for a given sump volume as well as their relatively simple construction technique [1]. This kind of pumping stations is equipped with submersible pumps. These are located in this case directly in the wastewater collection pit. The waste water passes through the pump station untreated and loaded with all kind of solids. Thus, the role of the pump sump is to provide an optimal operating environment for the pumps in addition to the transportation of sewage solids. Understanding the effects of design criteria on pumping station performance is important to fulfil the wastewater transportation as maintenance-free and energy efficient as possible. The design of the pit may affect the overall performance of the station in terms of poor flow conditions inside the pit, non-uniform und disturbed inflow at the pump inlet, as well as air entrainment to the pump. The scope of this paper is to evaluate the impact of various design criteria and the operating conditions on the performance of pump stations concerning the air entrainment to the pump as well as the sedimentation inside the pit. This is done to provide documentation and recommendations of the design and operating of the station. The investigated criteria are: the inflow direction, and the operating submergence. In this context experiments were conducted on a physical model of duplex circular wet pit wastewater pumping station. Furthermore the same experiments were reproduced by numerical simulations. The physical model made of acrylic allowed to visualize the flow patterns inside the sump at various operating conditions. This model is equipped with five different inflow directions, two of them are tangential to the pit and the remaining three are radial in various positions relative to the pumps centerline. Particles were used to enable the investigation of the flow patterns inside the pit to determine the zones of high sedimentation risk. The air entrainment was evaluated on the model test rig by measuring the depth, the width and the length of the aerated region caused by the plunging water jet and by observing the air bubbles entering the pumps. The starting sump geometry called baseline geometry is simply a flat floor. The tests were done at all the possible combinations of inflow directions, submergence, working pump and operating flow. The ability of the numerical simulation to give a reliable prediction of air entrainment was assessed to be used in the future as a tool in scale series to define the scale effect as well as to analyze the flow conditions inside the sump and to understand the air entrainment phenomenon. These simulations were conducted using the geometries of the test setup after generating the mesh with tetrahedral elements. The VOF multiphase model was applied to simulate the interaction of the liquid water phase and the gaseous air phase. On the basis of the results constructive suggestions are derived for the design of the pit, as well as the operating conditions of the pumping station. At the end recommendations for the design and operating conditions are provided.

scholarly journals Farmers’ participation in Water User Association in western Iran

2017 ◽  
Vol 35 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Saeed Gholamrezai ◽  
Fatemeh Sepahvand
Keyword(s):  
Water Resources ◽  
Water Consumption ◽  
User Association ◽  
Factors Affecting ◽  
Water User ◽  
Water User Association ◽  
Agriculture Sector ◽  
Water Pumping ◽  
Pumping Stations ◽  
Agriculture Water

AbstractOne of the main challenges of water scarcity is the water consumption in the agriculture sector. Therefore, optimizing water consumption and applying an optimal management in the agriculture sector is necessary. The implementation of a participatory management of water resources in the rural areas and the creation of Water User Association (WUA) can be a successful approach towards this management. That requires the continuity of the management, the comprehensive participation of farmers, and the exploitation of water resources; however, this action needs to understand the factors affecting the behavior of consumers. Thus identifying the factors influencing farmers’ intentions towards participation in WUA is essential. The purpose of this study is to identify factors affecting farmers' intentions towards participation in water user association, by theory of planned behavior (TPB). There are 21 agriculture water pumping stations active in Lorestan Province. Farmers at each agriculture water pumping stations make up a Water User Association. The population of this study consisted of all WUAs in western Iran (N = 1990), and through a proportional stratified random sampling technique farmers were selected (N = 133) from the population. Moreover, the validity of the questionnaire was confirmed by a panel of experts. The reliability of the questionnaire was calculated at pre-test stage for different parts of the questionnaire ranging from 0.83 until 0.91. The collected data were analyzed using Statistical Package for the Social Sciences 20 software. The results revealed that there were effective variables including subjective norm, attitude, and extension training courses which contributed to the importance of participation in the water management, and that the educational level of farmer was a controlled variable that could affect farmers' attitudes towards participating in Water User Association; these factors could explain 53% of farmers' participation totally.

scholarly journals PERENCANAAN DAN ANALISIS KELAYAKAN INVESTASI PROYEK PEMASANGAN KAPASITOR BANK PADA INSTALASI PEMANFAATAN ENERGI LISTRIK

2021 ◽  
Vol 9 (1) ◽  
pp. 77-82
Author(s):  
Epiwardi ◽  
Ruwahyoto ◽  
Heri sungkowo
Keyword(s):  
Payback Period ◽  
Economic Life ◽  
Water Pump ◽  
Energy Usage ◽  
Capacitor Banks ◽  
Water Pumping ◽  
Pump Station ◽  
Pumping Stations ◽  
Feasibility Test ◽  
The Cost

The low power factor in the electricity installation of Sumber Wendit 3 water pumping stations causes a bill of excess reactive energy usage or kVARh, so that the cost of using electricity becomes higher. The excess use of reactive energy can be compensated by additional investment in installing capacitor banks in the main distribution panel (MDP) Sumber Wendit 3 water pump station. Based on the data and problems, it is planned to install capacitor banks that meet the standards with a target of 0.90 and 0.95 lagging. From the results of the planning, we need 150 kVAR and 250 kVAR capacitors, with an investment value of Rp. 94,983,790 and - Rp. 120,781,210. After an investment feasibility test using the Payback Period (PP) method, it is known that for a 150 kVAR bank capacitors, the investment return is technically 2.88 months and economically is 4.01 and 3.17 months. For 250 kVAR bank capacitors, the return on investment is technically 3.66 months and economically 5.1 and 4.03 months. When compared with the economic life of the investment is 10 years, the investment of the bank capacitor installation project is very profitable and feasible to carry out

scholarly journals Drainage and watering systems on even lands with the use of frontal and frontal-circular sprinklers

2021 ◽  
Author(s):  
A. L. Kozhanov ◽  
◽  
O. V. Voyevodin ◽  
Keyword(s):  
Land Use ◽  
Design Method ◽  
Water Source ◽  
Humid Zone ◽  
Excess Water ◽  
Reduce Energy Consumption ◽  
Design Solutions ◽  
Effective Use ◽  
Intake Water ◽  
System Water

Purpose: research and development of design solutions for drainage and watering systems using linear and frontal-circular movement sprinkling machines for the effective use of system water resources when draining and moistening reclaimed lands in non-sloping (low-slope) areas and with a slight slope. Materials and methods. During the research, the well-known design solutions of drainage and watering, irrigation and water circulation systems of various scientists were analyzed. In the course of analysis of constructive solutions and methods of movement, analytical, comparative and logical methods were used. When developing (improving) design solutions, the design method was used. Results. During the research, it was found that in the humid zone, due to the decrease in irrigation norms, there is a possibility of increasing the seasonal load of sprinklers. Based on the results of studies of the principles of moving sprinkler machines and currently used design solutions in order to reduce energy consumption and increase the land use coefficient, three design solutions have been proposed for reclaimed lands with different slopes. It is proposed to use frontal and frontal-circular sprinklers in drainage and watering systems. Humidification in these solutions is carried out by accumulated drainage runoff with the possibility of discharging its excess water into a water intake-water source, as well as, additional withdrawal from it in case of necessity. Conclusions. As a result of the research, the constructive solutions for drainage and watering systems have been proposed using frontal-circular and frontal sprinklers on non-slope (low-slope) reclaimed lands, as well as those with a slope, which make it possible to reduce the number of sprinklers due to reduced irrigation norms and the location of the combined drainage-watering and watering networks.

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