scholarly journals Multi-Water Source Joint Scheduling Model Using a Refined Water Supply Network: Case Study of Tianjin

Water ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1580 ◽  
Author(s):  
Shanghong Zhang ◽  
Jiasheng Yang ◽  
Zhongyu Wan ◽  
Yujun Yi
Keyword(s):  
Resource Allocation ◽  
Water Supply ◽  
Water Resource ◽  
Water Distribution ◽  
Distribution Area ◽  
Source Water ◽  
Supply Source ◽  
Water Resource Allocation ◽  
Regional Water

Water shortage problems are increasing in many water-deficient areas. Most of the current research on multi-source combined water supplies depends on an overall generalization of regional water supply systems, which are seldom broken down into the detail required to address specific research objectives. This paper proposes the concept of a water treatment and distribution station (water station), and generalizes the water supply system into three modules: water supply source, water station, and water user. Based on a topological diagram of the water network (supply source–station–user), a refined water resource allocation model was established. The model results can display, in detail, the water supply source, water supply quantity, water distribution engineering, and other information of all users in each water distribution area. This makes it possible to carry out a detailed analysis of the supply and demand of users, and to provide suggestions and theoretical guidance for regional water distribution implementation. Tianjin’s water resource allocation was selected as a case study, and a water resource allocation scheme for a multi-source, combined water supply, was simulated and discussed.

scholarly journals Multi-objective optimal water supply scheduling model for an inter-basin water transfer system: the South-to-North Water Diversion Middle Route Project, China

2019 ◽  
Vol 20 (2) ◽  
pp. 550-564
Author(s):  
Shuo Ouyang ◽  
Hui Qin ◽  
Jun Shao ◽  
Jiantao Lu ◽  
Jianping Bing ◽  
...  
Keyword(s):  
Resource Allocation ◽  
Water Supply ◽  
Water Resource ◽  
River Basins ◽  
Water Diversion ◽  
Optimal Scheme ◽  
Water Resource Allocation ◽  
Scheduling Model ◽  
North Water ◽  
Basin Water

Abstract Inter-basin water diversion reallocates water resources by changing their spatio-temporal distribution characteristics between basins. This can effectively relieve water supply and demand conflicts in regions with water resource reserves shortages. However, building inter-basin water diversion projects obviously reduces the inflow from upstream, leading to increasingly conspicuous conflicts between water diversion outside a basin and water utilization inside the basin. To relieve this conflict and explore the optimal scheme of water resource allocation across river basins, this paper chooses the Middle Route Project of the South-to-North Water Diversion Project on the Hanjiang River as a case study. A water supply scheduling model of Danjiangkou Reservoir is built using an integrated inter-basin diversion draw water reservoir regulation (IDR) model to balance multiple conflicting water demands. In the IDR model there are two types of objective sets: aggregate indicators and process matching degree functions. Moreover, six evaluation indexes are selected to analyze the water resource allocation effect of the optimal scheme. The simulation results indicate that the proposed IDR model in this paper is practicable and efficient for water resource allocation across river basins.

scholarly journals Revenue augmentation through improved water supply services: a case study of the SMART-WASA team of Faisalabad, Pakistan

2021 ◽  
Author(s):  
R. Ogata ◽  
S. Segawa ◽  
S. Rashid ◽  
H. Nakayama
Keyword(s):  
Water Supply ◽  
Water Distribution ◽  
Water Pressure ◽  
Distribution Area ◽  
Rate System ◽  
Flat Rate ◽  
Water Demands ◽  
Number Of Customers ◽  
Water Supply Services

Abstract The Water and Sanitation Agency of Faisalabad has tried to increase its revenue by increasing both its water demands and total number of customers. To this end, a pilot activity was implemented. Two selected pilot areas were hydraulically separated to increase water pressures within the areas. The results showed that the durations of water supply increased from 3.5 to 12 hours and from 6 to 18 hours per day in the pilot areas. The water pressure in each pilot area increased from 2 to 10 m and from 3 to 18 m, respectively. Wastewater contamination was also eliminated after increasing the water pressure. Customers were informed of these achievements through workshops, flyers, and banners on streets, which encouraged them to shift from a flat rate system to a metering system. Consequently, the total billed amounts for two pilot areas in March 2019 increased by 65.0% and 97.0%, compared with those from November 2016. The bill collection ratios also increased from 48.2% to 56.9% and from 48.1% to 60.6% during pilot activities. Improving services of water supply utilities through the formation of a water distribution area with an increase in water pressure is recommended as an effective method for revenue augmentation.

Comparative reliability analysis of the distribution areas of a water supply system and its application for an earthquake risk analysis

2001 ◽  
Vol 1 (4) ◽  
pp. 217-226 ◽  
Author(s):  
Y. Hosoi ◽  
Y. Kido
Keyword(s):  
Water Supply ◽  
Analytical Hierarchy Process ◽  
Water Distribution ◽  
Supply System ◽  
Water Supply System ◽  
Distribution Area ◽  
Earthquake Risk ◽  
Hierarchy Process ◽  
Supply Reliability

A methodology for comparative evaluation of the water supply reliability of distribution areas was presented. There are various factors which affect water supply reliability. As they cannot be quantified by the same standard, reliability of water distribution area was examined according to the value of each factor. These factors were organized into an index through the analytical hierarchy process. The reliability of each distribution area of the water supply system in the case study area was comparatively evaluated by the method. The problems and points necessary for improvement of the water supply reliability of each distribution area were indicated.

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