Sanitation Library
Total results: 4466
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The Sanitation Workers Knowledge + Learning Hub is the best source for all current news, trends, articles and updates on sanitation workers rights around the world.
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This publication provides a general introduction to the reverse osmosis (RO) and nanofiltration (NF) membrane treatment processes. The subjects addressed in this chapter should serve as the basic foundation for a broader understanding of RO and NF processes as applied to potable water, industrial process water, tertiary wastewater, and reclaimed water treatment, and include a general overview of …
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46 Downloads
The modern Hydram uses a very old principle of physics in a simple but effective way to
move water from a stream or river to places where it is most needed. Where there is suitable
clean water available, it can provide supplies to remote houses or communities, allow
irrigation of inaccessible areas and maintain feed water for stock in areas at a distance from
water sources.
The use of a …
857 Views
2 Downloads
The guidelines set out essential actions that humanitarian actors must take in order to effectively identify and respond to the needs and rights of persons with disabilities who are most at risk of being left behind in humanitarian settings.
The recommended actions in each chapter place persons with disabilities at the centre of humanitarian action, both as actors and as members of affected …
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Persons with disabilities often experience discrimination and exclusion, despite the adoption of an increasingly rights-based approach to humanitarian assistance. The past three decades have witnessed a growing awareness of disability issues and the emergence and spread of disabled people’s organisations.
The growing awareness must be accompanied by practical measures to identify and reduce …
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7 Downloads
The one day Conference held on 9th March 2006 was entitled “Water and sanitation for disabled people and other vulnerable groups: improving access and inclusion.”
The purpose of the conference was to introduce the issues and problems of accessing and using WATSAN services and facilities for disabled people and other vulnerable groups, including solutions and examples of good practice for …
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22 Downloads
This compendium presents low-cost technologies to improve the accessibility of household water, sanitation and hygiene (WASH) facilities. It is designed for use by people working directly with communities in rural areas of Sub-Saharan Africa, including health workers and community volunteers.
Most of the ideas are designed to ensure access for disabled and older people, but are suitable for …
642 Views
0 Downloads
This document provides guidance for practitioners on conducting market analysis before the onset of an
anticipated crisis using an adaptation of existing post-crisis market assessment tools. Recommendations stemming from this analysis could be used to inform preparedness and DRR programming decision making as well as future emergency responses. This guidance focuses on markets, with the …
664 Views
8 Downloads
Roughing filtration is a simple, efficient and chemical free water treatment method for turbidity removal; it can be used as a pre-treatment method prior to slow sand filters or disinfection with chlorine. The main disadvantage of roughing filtration for use in emergency situations is that it uses gravel as a filter medium. Gravel may be unavailable or difficult to transport because of its …
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3 Downloads
Several software applications incorporate recent advances in information and communication technology (ICT) to improve information gathering about water points. Among these applications, FLOW (Field Level Operations Watch) is not able because it was developed specifically for water point mapping. With FLOW, enumerators use android phones to enter data about each water point, and take its picture …
833 Views
4 Downloads
Standpipes that dispense water from utilities are the most common alternatives to piped water connections for poor customers in the cities of Sub-Saharan Africa. Fifty-five percent of the unconnected urban population relies on standpipes as their first water source. Other informal water providers include household resellers and a variety of water tankers and vendors, which are the first water …
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Water vending is probably as old as human society and trade, but in recent centuries it has been overshadowed by the expansion of networked piped systems. Water vending is now often taken as a symptom of a failure in these piped systems, which still provide water to only a minority of urban dwellers in many parts of the world. When collecting international statistics on access to water, those who …
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4 Downloads
967 Views
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The composition of water varies widely with local geological conditions. Neither groundwater nor surface water has ever been chemically pure H2O, since water contains small amounts of gases, minerals and organic matter of natural origin. The total concentrations of substances dissolved in fresh water considered to be of good quality can be hundreds of mg/L.
Thanks to epidemiology and advances …
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1 Downloads
Water quality monitoring is important for identifying public health risks and ensuring water safety. However, even when water sources are tested, many institutions struggle to access data for immediate action or long-term decision-making. We analyzed water testing structures among 26 regulated water suppliers and public health surveillance agencies across six African countries and identified …
891 Views
12 Downloads
Rainfall and soil water are fundamental parts of all terrestrial and aquatic ecosystems which supplies goods and services for human well-being. Availability and quality of water determines ecosystem productivity, both for agricultural and natural systems. There is increasing demand on water resources for development whilst maintaining healthy ecosystems, which put water resources under pressure. …
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10 Downloads
Contamination of drinking water by microorganisms and arsenic represents a major human health hazard in many parts of the world. An estimated 3.4 million deaths a year are attributable to waterborne diseases. Arsenic poisoning from contaminated water sources is causing a major health emergency in some countries such as Bangladesh where 35 to 77 million people are at risk.
The World Health …
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33 Downloads
A typical small water supply system requires less than about 200,000 litres per day, which is well within the capacity of small streams and alternative water sources, other than rivers. Indeed a river is not the ideal source of domestic water in many situations and an intake would normally be constructed only if there is no satisfactory alternative source such as groundwater (handpump), rainwater …
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354 Downloads
The “India Mark II Handpump” was developed in India more than 30 years ago and it is designed for lifting water from deep wells up to 50 m. Strict maintenance of deep-well pumps is very important to keep them operational. Therefore the pump users must be trained and willing to make regular maintenance in a disciplined manner. Spare parts that require regular replacements must be easily …
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17 Downloads
UNDP is supporting vulnerable host-communities in various areas of Lebanon including the development and construction of water networks and the improvement of livelihoods, particularly in the agricultural sector. For example, within the umbrella of the Lebanese Centre for Water Management and Conservation (LCWMC) at the Ministry of Energy and Water, a project funded by the Swiss Agency for …
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2 Downloads
Wherever possible, a community should avoid the health risks which result from using contaminated pond water, by using an alternative, good-quality source. (Groundwater or rainwater sources will usually produce water of much better quality.) If a pond is the only source of water, the implementation of some of the ideas in this Technical Brief should improve the quality of the water. It is not …
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16 Downloads
A VLOM pump is one which can be operated and sustained using Village Level Operation and Maintenance. The term VLOMM is also used, meaning Village Level Operation and Management of Maintenance. This addition emphasizes the role of users as the managers of maintenance – they may choose to use someone from outside the village to assist with more complicated repairs. Not all maintenance and repair …
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24 Downloads
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Seawater desalination facilities require an intake system capable of providing a reliable quantity of clean seawater with a minimum ecological impact. To meet these objectives, it is essential that a thorough assessment of site conditions be conducted. Physical characteristics, meteorological and oceanographic data, marine biology, and the potential effects of fouling, pollution, and navigation …
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7 Downloads
Historically, interventions to provide people with safe water have focussed on improving water sources. However there is now a consensus among the WatSan community that even if the drinking water source is safe it can easily be re-contaminated during its transportation and storage in the household (Clasen and Bastable, 2003). A safe water intervention should therefore begin with an improved water …
