Strategies to close water supply and demand gap

2007 ◽  
Vol 7 (4) ◽  
pp. 103-110
Author(s):  
Gustaf Olsson

The growing water and sanitation crisis in the world calls for enormous efforts from water professionals as well as economic and political leaders. The climate change contributes to the acuteness of the problem, with dryer areas in some parts of the world and severe floods and rains in other parts. The European Water Supply and Sanitation Technology Platform (WSSTP) is an industry driven organisation aiming to strengthen the potential for technological innovation and the competitiveness of the European Water Industry but is also a response to global challenges and regional demands to ensure safe, secure and sustainable water and sanitation services for the benefit of industry, the society and the environment. The supply of electrical energy has to be carefully considered as a pre-requisite for water supply and sanitation. The production of biogas can be significantly increased by using instrumentation and control. The use of monitoring and control has wide consequences for safe and reliable water supply and sanitation.

2010 ◽  
Vol 1 (1) ◽  
pp. 2-16 ◽  
Author(s):  
Guy Howard ◽  
Katrina Charles ◽  
Kathy Pond ◽  
Anca Brookshaw ◽  
Rifat Hossain ◽  
...  

Drinking-water supply and sanitation services are essential for human health, but their technologies and management systems are potentially vulnerable to climate change. An assessment was made of the resilience of water supply and sanitation systems against forecast climate changes by 2020 and 2030. The results showed very few technologies are resilient to climate change and the sustainability of the current progress towards the Millennium Development Goals (MDGs) may be significantly undermined. Management approaches are more important than technology in building resilience for water supply, but the reverse is true for sanitation. Whilst climate change represents a significant threat to sustainable drinking-water and sanitation services, through no-regrets actions and using opportunities to increase service quality, climate change may be a driver for improvements that have been insufficiently delivered to date.


2007 ◽  
Vol 7 (2) ◽  
pp. 11-22 ◽  
Author(s):  
P.A. Wilderer ◽  
D. d'Arras

The European Water Supply and Sanitation Technology Platform (WSSTP) is an industry driven organisation aiming to strengthen the potential for technological innovation and the competitiveness of the European Water Industry. In response to global challenges and regional demands a strategy has been proposed to ensure safe, secure and sustainable water and sanitation services for the benefit of industry, the society and the environment. Integrated Water Resources Management is used as a guiding principle. Water supply, wastewater treatment (sanitation), river basin management and concerns of regulators, financing institutions and the civil society are the key elements of a system to be sustainably managed. Decision makers of the private and the public sector are to understand that investment in research, technology development and implementation of innovation is an important element in the process of securing economic prosperity, social stability and functioning of the ecological systems which we as human beings are a part of. A hierarchic, practice oriented structure is proposed to organize and govern research and technology development in Europe. Research will be organized within the framework of thematically designed pilot programmes containing a distinct number of implementation cases to execute close-to-reality research.


Author(s):  
Ali Bouabid ◽  
Garrick Louis

Abstract Access to water supply and sanitation services remains a challenge in many parts of the world. The expected growth of the world's population, from about 7.8 billion people today to 9.8 billion people by 2050, and to around 11 billion people by the end of 2100, will create even higher demand and a greater strain on these basic services. Goal 6 of the United Nations Sustainable Development Goal (SDG) aims to ‘Ensure availability and sustainable management of water and sanitation for all’ by 2030. However, in a recent report, UN-Water warns us that if things continue on the current path, the world will miss the targets of SDG 6. The selection of appropriate water and sanitation technologies is key to meeting SDG 6 targets. This paper presents an original framework of a decision support system (DSS) for the selection of appropriate water supply and sanitation (Watsan) technologies in developing countries. The proposed DSS has three components. The first component is the user interface, where the inputs are the assessment of a community's capacity to manage a given water supply or sanitation system, and its regional specificity. The second component of the DSS is a database of Watsan technologies classified according to the capacity requirement level (CRL) metric, and finally, the third component is a matching algorithm for the selection of appropriate Watsan technology options. Case studies and simulations results are presented for the evaluation of the performance of the decision support system.


2009 ◽  
Vol 4 (3) ◽  
Author(s):  
Ramesh Kumar Sharma

The Rural Water Supply and Sanitation Fund Development Board (The Board) has been implementing WATSAN schemes in Nepal since March 14, 1996 under assistance from World Bank/IDA and DFID. The Board brought fundamental changes in the conventional supply driven approach to promote Demand Driven Community based water supply and sanitation project with cost effective and sustainable services to the rural people of Nepal. Communities are supported to form inclusive local water supply and sanitation user groups that can plan, implement, and operate drinking water and sanitation infrastructure that delivers sustainable health, hygiene and productivity benefits to rural households. Under the Board fund presently 165 NGOs partner together with local communities in 71 districts of Nepal to deliver safe water and sanitation services. The Board has contributed to improve sector institutional performance by grooming service delivery capacity of NGOs, Communities and mainstreaming its successful approaches in to Government mechanism and other sector agencies delivering developmental services in Nepal. Latest contribution of the Board is to support Ministry of Physical Planning and Works in establishing computerized Monitoring and Evaluation Unit and provide information regarding progress in rural water supply and sanitation sector. This will help the government in performance based budget allocation to service delivering agencies. As to Board's own performance various studies shows after project 90 percent hand wash practice in community, 33 percent No Open Defecation schemes and 84–92 percent sustainability of 3-8years old schemes


Author(s):  
Sanford V. Berg

Organizations regulating the water sector have major impacts on public health and the sustainability of supply to households, industry, power generation, agriculture, and the environment. Access to affordable water is a human right, but it is costly to produce, as is wastewater treatment. Capital investments required for water supply and sanitation are substantial, and operating costs are significant as well. That means that there are trade-offs among access, affordability, and cost recovery. Political leaders prioritize goals and implement policy through a number of organizations: government ministries, municipalities, sector regulators, health agencies, and environmental regulators. The economic regulators of the water sector set targets and quality standards for water operators and determine prices that promote the financial sustainability of those operators. Their decisions affect drinking water safety and sanitation. In developing countries with large rural populations, centralized water networks may not be feasible. Sector regulators often oversee how local organizations ensure water supply to citizens and address wastewater transport, treatment, and disposal, including non-networked sanitation systems. Both rural and urban situations present challenges for sector regulators. The theoretical rationale for water-sector regulation address operator monopoly power (restricting output) and transparency, so customers have information regarding service quality and operator efficiency. Externalities (like pollution) are especially problematic in the water sector. In addition, water and sanitation enhance community health and personal dignity: they promote cohesion within a community. Regulatory systems attempt to address those issues. Of course, government intervention can actually be problematic if short-term political objectives dominate public policy or rules are established to benefit politically powerful groups. In such situations, the fair and efficient provision of water and sanitation services is not given priority. Note that the governance of economic regulators (their organizational design, values or principles, functions, and processes) creates incentives (and disincentives) for operators to improve performance. Related ministries that provide oversight of the environment, health and safety, urban and housing issues, and water resource management also influence the long-term sustainability of the water sector and associated health impacts. Ministries formulate public policy for those areas under their jurisdiction and monitor its implementation by designated authorities. Ideally, water-sector regulators are somewhat insulated from day-to-day political pressures and have the expertise (and authority) to implement public policy and address emerging sector issues. Many health issues related to water are caused or aggravated by lack of clean water supply or lack of effective sanitation. These problems can be attributed to lack of access or to lack of quality supplied if there is access. The economic regulation of utilities has an effect on public health through the setting of quality standards for water supply and sanitation, the incentives provided for productive efficiency (encouraging least-cost provision of quality services), setting tariffs to provide cash flows to fund supply and network expansion, and providing incentives and monitoring so that investments translate into system expansion and better quality service. Thus, although water-sector regulators tend not to focus directly on health outcomes, their regulatory decisions determine access to safe water and sanitation.


2014 ◽  
Vol 1044-1045 ◽  
pp. 755-758
Author(s):  
Xin Hui Yang

This paper provides a design for a PLC-based, variable-frequency governing, pressure-constant, automatic water-supply control system. This design is based on the current situations at the water supply plants found in small and medium cities in China. In this control system, the pressure signal across the pipe network is acquired by pressure sensors and then transmitted to PID modules in the PLC in order to control switching between pump motors. At the same time, the PLC is connected with a personal computer for industrial control purposes. On this computer, monitoring and control software has been installed in order to monitor and control the pressure-constant water-supply system on a real-time basis.


2019 ◽  
Vol 5 (15) ◽  
pp. 1448-1455
Author(s):  
Venelin Terziev ◽  
Teodora Petrova

The non-motorized air systems for intelligence, monitoring and control of the earth surface have gained currency and are used for various tactic flight’s tasks and missions. The non-motorized aircrafts (NMA) and the air-monitoring systems that include board and land part are key elements of these systems. The world experience in using NMA for these uses shows that they are most suitable where the exploitation conditions are very extreme and there is an unacceptable risk for operations of piloted aviation. Such are intelligence and observation of strictly guarded sites, zones, where military operations are conducted as well as regions with large scale fires and floods. The use of people in these conditions is connected with actual threat for their lives and practically, NMA as a tool for collecting and processing of information is irreplaceable. Keywords: registration of images, methods, information systems, non-motorized aircrafts.


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