Selection of sustainable sanitation arrangements

Water Policy ◽  
2007 ◽  
Vol 9 (3) ◽  
pp. 305-318 ◽  
Author(s):  
Duncan Mara ◽  
Jan-Olof Drangert ◽  
Nguyen Viet Anh ◽  
Andrzej Tonderski ◽  
Holger Gulyas ◽  
...  
Keyword(s):  
Developing Countries ◽  
Low Cost ◽  
Millennium Development Goal ◽  
Selection Algorithm ◽  
Development Goal ◽  
General Lack ◽  
Sanitation Services ◽  
Ecological Sanitation ◽  
Selection Of ◽  
Lack Of Knowledge

To meet the Millennium Development Goal for sanitation around 440,000 people will have to be provided with adequate sanitation every day during 2001–2015, and the corresponding figure to meet the WHO/UNICEF target of “sanitation for all” by 2025 is around 480,000 people per day during 2001–2025. The provision of sanitation services to such huge numbers necessitates action on an unprecedented scale. This is made even more difficult by the general lack of knowledge on the part of professionals and the intended beneficiaries about which sanitation arrangement is the most appropriate under which circumstances. A sanitation selection algorithm, which considers all the available sanitation arrangements, including ecological sanitation and low-cost sewerage, and which is firmly based on the principles of sustainable sanitation, is developed as a guide to identify the most appropriate arrangement in any given situation, especially in poor and very poor rural and periurban areas in developing countries.

scholarly journals A Review on EcoSan (Ecological Sanitation)

2021 ◽  
Vol 9 (VII) ◽  
pp. 1806-1807
Author(s):  
Chetan Joshi
Keyword(s):  
Developing Countries ◽  
Rural Areas ◽  
Urban Areas ◽  
Cost Effective ◽  
Nutrient Cycle ◽  
Nutrient Contents ◽  
Sanitation Services ◽  
Ecological Sanitation ◽  
Treatment Techniques ◽  
Urban And Rural Areas

In today’s world about 2.4billion people from urban and rural areas do not have suitable access to sanitation services. In upcoming 20 years, it is estimated that a surplus of 2 billion will get migrated to urban areas, probably in developing countries, necessitating sanitation. Still greater than 90% of sewage in developing countries is discharged unprocessed polluting water bodies. Traditional sanitation ideas are neither ecofriendly nor cost-effective for developing countries. Ecological Sanitation (EcoSan) is a sanitation system having a cycle of sustainable closed-loop system, which winds up the breach between sanitation and agriculture. The EcoSan technique is resource minded and characterize a universal approach towards ecofriendly and economically healthy sanitation. The primary goal is to close water and nutrient cycle with minimum expenses on energy and material to subsidize a sustainable development. Human excreta is treated as resource and are generally handled on-site and treated off-site. The nutrient contents in excreta are reutilized by using them in agriculture. EcoSan is a complete methodology. Single practices are only measures to termination and may range from near-natural wastewater treatment techniques to compost toilets, uncomplicated domestic installations to complex, mainly decentralized systems. These technologies are not ecofriendly but only in relation with witnessed environment. They are chosen from complete range of available conventional, traditional and modern techniques merging them to EcoSan system.

Beyond the Decade: A Framework for Global Cooperation

1991 ◽  
Vol 23 (1-3) ◽  
pp. 211-213
Author(s):  
Alexander H. Rotival
Keyword(s):  
Developing Countries ◽  
Water Supply ◽  
World Bank ◽  
Community Involvement ◽  
Urban Poor ◽  
Low Cost ◽  
External Support ◽  
Sanitation Services ◽  
Major Factors ◽  
Water Supply And Sanitation

The International Drinking Water Supply and Sanitation Decade (IDWSSD) was launched by the General Assembly of the United Nations in November 1980 with the goal “to provide all people with water of safe quality and adequate quantity and basic sanitary facilities by 1990”. The World Bank estimates that despite the efforts during the Decade less than 50 percent of developing country populations have access to adequate water supplies and only 20 percent to adequate sanitation facilities. Major factors for the situation are the continuing population explosion and the economic stagnation of developing countries. Qualitative breakthroughs have been made however, through (i) improved coordination for sector inputs at the global and country levels, (ii) systematic formulation of country strategies, (iii) rationalization of the management of the sector, and most significantly through (iv) community involvement and (v) the adoption of low-cost sustainable and replicable technologies. The UNDP/World Bank Programme and the UNDP/WHO Decade Programmes have played a catalytic role in developing activities in these five areas. To maintain Decade momentum beyond 1990 and to accelerate the provision of water supply and sanitation services to all, with emphasis on the unserved rural and peri-urban poor, by using a coordinated programme “Decade” approach, a Framework for Global Cooperation has been established. A series of meetings of a Collaborative Council of External Support Agencies (ESAs) is involved, leading to a global consultation in India in 1990 for all developing countries to define and achieve consensus on a water and sanitation sector strategy for “Beyond the Decade”.

Low-Cost Technology for Water Pollution Control in Developing Countries

1982 ◽  
Vol 14 (9-11) ◽  
pp. 1337-1352 ◽  
Author(s):  
G G Cillié
Keyword(s):  
Water Pollution ◽  
Developing Countries ◽  
United Nations ◽  
Pollution Control ◽  
Low Cost ◽  
Water Pollution Control ◽  
Local Labour ◽  
International Water ◽  
Design And Methods ◽  
Local Materials

An estimated 80 % of all illnesses in developing countries is in one way or another related to water. In order to alleviate this most serious condition, the united Nations has initiated the “International Water Decade”, for which the estimated costs are $600 000 million, a sum which is far beyond any available means. By application of “low-cost technology” this sum could be reduced to $100 000 million which brings the objective within the reach of possibility. Details are given of the design and methods of construction of units which are best suited to the specific requirements and which would be simple, reliable and economical to operate. These can be constructed largely from local materials and by local labour. The need for appropriate training of both operators and the user population is stressed.

scholarly journals Low-cost hybrid design of masonry structures for developing countries: Shaking table tests

2021 ◽  
Vol 146 ◽  
pp. 106675
Author(s):  
Anastasios Tsiavos ◽  
Anastasios Sextos ◽  
Andreas Stavridis ◽  
Matt Dietz ◽  
Luiza Dihoru ◽  
...  
Keyword(s):  
Developing Countries ◽  
Low Cost ◽  
Shaking Table ◽  
Hybrid Design ◽  
Masonry Structures ◽  
Shaking Table Tests

scholarly journals Design Considerations and Selection of Cost-Effective Switched Reluctance Drive for Radiator Cooling Fans

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 917
Author(s):  
Ickjin Son ◽  
Grace Firsta Lukman ◽  
Mazahir Hussain Shah ◽  
Kwang-Il Jeong ◽  
Jin-Woo Ahn
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
Magnetic Characteristics ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Design Considerations ◽  
Cooling Fan ◽  
Cooling Fans ◽  
Power Switches ◽  
Selection Of

Switched reluctance motors (SRMs) are simple in structure, easy to manufacture, magnet-less, brushless, and highly robust compared to other AC motors which makes them a good option for applications that operate in harsh environment. However, the motor has non-linear magnetic characteristics, and it comes with various pole-phase combinations and circuit topologies that causes many difficulties in deciding on which type to choose. In this paper, the viability of SRM as a low-cost, rugged machine for vehicle radiator cooling fan is considered. First, necessary design considerations are presented, then three commonly use types of SRM are analyzed: A 3-phase 6/4, 3-phase 12/8, and a 4-phase 8/6 to find their static and dynamic characteristics so the most suitable type can be selected. Simulation results show that the 8/6 SRM produces the highest efficiency with less phase current which reduces the converter burden. However, with asymmetric half bridge converter, eight power switches are required for 8/6 SRM and thus put a burden on the overall drive cost. As a solution, the Miller converter with only six switches for four phase SRM. To verify the proposed idea, the 8/6 SRM was manufactured and tested. The results show that Miller converter can be used for the proposed SRM with slightly reduced efficiency at 80.4%.

scholarly journals An IoT-Based Participatory Antitheft System for Public Safety Enhancement in Smart Cities

Smart Cities ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 919-937
Author(s):  
Nikos Papadakis ◽  
Nikos Koukoulas ◽  
Ioannis Christakis ◽  
Ilias Stavrakas ◽  
Dionisis Kandris
Keyword(s):  
Smart Cities ◽  
Low Cost ◽  
Negative Influence ◽  
Asset Tracking ◽  
Tracking Tasks ◽  
Tracking Process ◽  
The Impact ◽  
Operation Center ◽  
Safety Enhancement ◽  
Selection Of

The risk of theft of goods is certainly an important source of negative influence in human psychology. This article focuses on the development of a scheme that, despite its low cost, acts as a smart antitheft system that achieves small property detection. Specifically, an Internet of Things (IoT)-based participatory platform was developed in order to allow asset-tracking tasks to be crowd-sourced to a community. Stolen objects are traced by using a prototype Bluetooth Low Energy (BLE)-based system, which sends signals, thus becoming a beacon. Once such an item (e.g., a bicycle) is stolen, the owner informs the authorities, which, in turn, broadcast an alert signal to activate the BLE sensor. To trace the asset with the antitheft tag, participants use their GPS-enabled smart phones to scan BLE tags through a specific smartphone client application and report the location of the asset to an operation center so that owners can locate their assets. A stolen item tracking simulator was created to support and optimize the aforementioned tracking process and to produce the best possible outcome, evaluating the impact of different parameters and strategies regarding the selection of how many and which users to activate when searching for a stolen item within a given area.

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