scholarly journals Planning for urban water supply–demand portfolio using a hybrid robust stochastic optimization approach

2020 ◽  
Vol 20 (8) ◽  
pp. 3433-3448
Author(s):  
Maryam Shabani ◽  
Naser Shams Gharneh ◽  
Seyed Taghi Akhavan Niaki
Keyword(s):  
Water Management ◽  
Water Supply ◽  
Stochastic Optimization ◽  
Cost Minimization ◽  
Supply And Demand ◽  
Demand Management ◽  
Water Shortage ◽  
Optimization Approach ◽  
Urban Water ◽  
Management Options

Abstract Water management and preventing water shortage require accurate planning with attention to the importance of urban water. The problems ahead include the increase in demand and reduction in water supply resources due to factors that cause uncertainties and the high cost of water supply infrastructures. Most studies in urban water management consider only a single criterion. However, in this research, two objective functions, namely cost minimization and per capita water consumption maximization, were used simultaneously. A portfolio approach based on the balance of water supply and demand was developed taking uncertainty into account. Then, the problem was solved using a hybrid robust–stochastic optimization approach. The results showed the selected supply augmentation and demand management options in each stage under dry, normal, and wet year scenarios.

scholarly journals Working with Community and Council: The Kirirri Story

2020 ◽  
Vol 5 (4) ◽  
pp. 1-15
Author(s):  
Cara Beal ◽  
Bernard Dorante ◽  
Patrick Pearson ◽  
Safaa Aldirawi ◽  
Noora Abdallah
Keyword(s):  
Water Supply ◽  
Supply And Demand ◽  
Demand Management ◽  
Economic Factors ◽  
Remote Communities ◽  
Management Options ◽  
Community Based ◽  
Management Tools ◽  
Water Supply Management ◽  
Planning And Construction

Ensuring safe, accessible and acceptable drinking water in remote communities in Australia requires culturally and socially appropriate, technically feasible and economically viable approaches. Arguably, technical and economic factors have been the main focus for remote communities in the water sector, as engineers historically drove the design, planning and construction phases of water supply management options. More recently, increasing focus has been on understanding and integrating local people and place into water supply and demand management. This paper focusses on community-based water demand management in the inner Torres Straits community of Kirirri. The aims and methods are outlined, along with a discussion of the findings which describe the community-preferred demand management tools that were piloted in 25 households between 2018-2019.

scholarly journals Urban water management challenges and achievements in Windhoek, Namibia

2019 ◽  
Vol 14 (3) ◽  
pp. 703-713 ◽  
Author(s):  
Earl W. Lewis ◽  
Chad Staddon ◽  
Johannes Sirunda
Keyword(s):  
Water Management ◽  
Water Supply ◽  
Water Demand ◽  
Demand Management ◽  
Urban Water ◽  
Urban Water Management ◽  
Water Demand Management

Abstract This paper gives an overview of the main challenges and achievements faced by Windhoek's water management sector. The paper highlights pertinent issues arising from increased water demand, and also explores current and future water supply augmentation options. Water planners experience management challenges as a result of a combination of factors, mainly, lack of funds and staff, limited expertise, poor communication between stakeholders, and weak regulation and enforcement. In order to meet these challenges water managers need to develop more robust and resilient strategies, including greater focus on water demand management.

Options for the future: balancing urban water supply and demand in Beijing

Water Policy ◽  
2006 ◽  
Vol 8 (2) ◽  
pp. 97-110 ◽  
Author(s):  
Can Wang ◽  
Camilla Dunham Whitehead ◽  
Jining Chen ◽  
Xiaomin Liu ◽  
Junying Chu
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Water Use ◽  
Water Conservation ◽  
Supply And Demand ◽  
Water Shortage ◽  
Urban Water ◽  
Current Effort ◽  
Current Water ◽  
Water Supply And Demand

Beijing is facing the considerable challenge of water shortage, as it is just able to meet current water demand in a year with average precipitation and a shortfall between water supply and demand is estimated to be around 1.8 billion[109] cubic meters (BCM) by 2010. Aiming to find the solution to such a severe challenge, this paper investigates Beijing's current and future water resources availability and water-use configurations, as well as past and current effort on both areas of water supply and demand. The analysis shows a continuously growing demand for water and an aggravating deficit of traditionally available water resources. The paper concludes that it is necessary to establish well-structured water-use data and employ more advanced forecasting methods if sound future decisions regarding water balance are expected to be made. In order to realize Beijing Municipality's full urban water conservation potential, it is suggested that a comprehensive and integrated long-term conservation program be implemented, which is technically feasible and economically justified, to conserve water consistently for many years.

A sustainable urban water management model under uncertainty: a case study

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Maryam Shabani ◽  
Naser Shams Gharneh ◽  
Seyed Taghi Akhavan Niaki
Keyword(s):  
Water Management ◽  
Sustainable Development ◽  
Multiobjective Optimization ◽  
Optimization Model ◽  
Social Issues ◽  
Supply And Demand ◽  
Demand Management ◽  
Scenario Tree ◽  
Urban Water ◽  
Content Type

PurposeTackling the challenges of water scarcity requires comprehensive management according to financial, environmental and social issues. This paper aims to develop a planning approach for systematic decision-making and pay attention to uncertainties in water demand management and supply investment.Design/methodology/approachThis study presents a multiobjective optimization model to manage water resources based on the balance of supply and demand. The objectives of the model include economic, social and environmental (sustainable development) factors. The model achieves an optimal urban water portfolio by using a scenario tree.FindingsThe mathematical goal programming (GP) in a multiobjective optimization model is applied and solved by the branch and bound method. The results indicate the selected supply augmentation and demand management options in each stage for 20 years according to the dry, normal and wetness year scenarios.Practical implicationsThis model is based on a real-world case and has been implemented in the city of Karaj. It can be applied for water management of other cities concerning sustainable development as well.Originality/valueThis paper innovates by considering the sustainable development criteria that are defined using three objective functions, including economic, social and environmental factors. The balance of supply and demand concerning uncertainty has not been investigated in any urban water portfolios. The standardized precipitation evapotranspiration index (SPEI) is incorporated to generate different scenarios. To the best of the authors’ knowledge, this approach is used for the first time.

Ecosystem Service Impacts of Urban Water Supply and Demand Management

2017 ◽  
Vol 31 (15) ◽  
pp. 4785-4799 ◽  
Author(s):  
John M. Kandulu ◽  
Darla Hatton MacDonald ◽  
Graeme Dandy ◽  
Angela Marchi
Keyword(s):  
Water Supply ◽  
Ecosystem Service ◽  
Supply And Demand ◽  
Demand Management ◽  
Urban Water ◽  
Urban Water Supply ◽  
Water Supply And Demand

Challenges of Water Resource Development and Management in Zing Town, Taraba State, Nigeria

2015 ◽  
Vol 4 (1) ◽  
pp. 355-360
Author(s):  
E D Oruonye ◽  
E Bange
Keyword(s):  
Water Management ◽  
Water Supply ◽  
Water Resource ◽  
Resource Development ◽  
Economic Life ◽  
Earth Dam ◽  
Urban Water ◽  
Water Resource Development ◽  
Dug Wells ◽  
Development And Management

This study examined the challenges of water resource development and management in Zing town,Taraba State, Nigeria. The study considered issues of sources of water supply in Zing town, the nature of water challenges, impacts of the water challenges on the socio-economic life of the people, water management strategies and prospect of urban water resource development in the study area. 110 questionnaires were systematically administered in ten streets that were purposively selected in Zing town. The data were analyzed using descriptive statistics. The result of the finding indicates that majority (45.5%) of the respondent have their water source from borehole, 18.2% streams, 18.2% hand dug wells and 9.1% from other sources (mostly water vendors). The study shows that 68.2% of the respondents had their water point located outside their households, while only 31.8% claimed to have their water sources located within their compounds (this is mostly hand dug wells). The nature of water challenge in the area ranges from severe (50%), not severe (27.3%) and normal (22.7%). The results also shows that only 34% of respondents claimed to have access to sufficient water daily, while 66% of the respondents hardly have access to sufficient water on daily basis. The study shows that the water management strategy adopted mostly by the respondent ranges from storing water in large container (48.2%), reduce water use (29.1%), increase amount spent on water (13.6%) and others 9.1% (mainly re-use of water). The prospect of water resource development in the study area is very bright with the proposal of a small earth dam in Monkin settlement by the Federal Government of Nigeria. The Monkin small earth dam which is meant to generate 500KW of electricity can be integrated into an urban water supply project in the area. This will assure more reliable water supply all year round. It will also help to overcome some of the challenges of servicing the hand pumps which rendered them inadequate when they break down. This study recommends the need to replace the old and obsolete borehole equipment with new ones and increase the number of boreholes to meet the increasing water demand in the area.

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