By and large, This document is a comprehensive database of research and development activities of the Government, non-government organizations, development partners and other agencies working in the Water Supply and Sanitation (WSS) sector. The situation of research in WSS sector in Bangladesh with emphasis on technical, social and arsenic interventions have been analyzed in this study. The followings have been delineated in the report
Overflowing of latrine during monsoon flood and heavy rainfall is a common scenario in Bangladesh. To overcome this common problem, an attempt was made to provide technological solutions for safe sanitary latrines based on the concept of ‘raised latrine’ constructed above flood level in flood-prone and high water table areas. The technologies include ‘Earth Stabilized Raised Pit Latrine’, ‘Step Latrine’, ‘Mount Latrine’ and ‘Sand Enveloped Pit Latrine’.View Table of Contents
People’s perception about the existing communication materials on rural water supply and sanitation programme has been examined in the study wherefrom the factors influencing the effectiveness of materials have been identified and finally, a set of recommendations has been made towards development of effective communication materials.View Table of Contents
Personal and household behaviors and sanitation practices by the majority of the population to a large extent are unhygienic. Program planning whether it be for the installation of a latrine or sinking of a tube-well, it must always take into consideration the needs of the ultimate users and responsibilities must be delegated among the community according to capability and sustainability.View Table of Contents
A field kit was developed which used non-toxic Silver Nitrate soaked papers as indicator. Adsorption capacities of arsenic by different materials were tested in the laboratory, in which good removal potential was found in Bijoypur clay, bleached sawdust and newspaper pulp.View Table of Contents
The research focused on development of a community based Arsenic-Iron Removal Unit (AIRU) adopting the technique of adsorption and co-precipitation of arsenic onto the flocs of ferric hydroxide, making use of the naturally occurring iron of groundwater. The operation and maintenance of the developed AIRU are simpler and more users friendly in comparison to the previously developed community based water treatment units. Number of beneficiaries and water consumption was increased by about 10 folds after the installation of the AIRU.View Table of Contents
Contamination of groundwater with arsenic is considered as a major challenge in the water supply sector of Bangladesh. ITN-BUET has conducted a number of researches on arsenic issue. In continuation of ITN-BUET initiatives, a research on “Effectiveness of Alum in Removing Arsenic” was conducted by ITN-BUET during 2001 to 2002. This publication is the outcome of this initiative.
Promotion of technologies for removing arsenic is one of the important policies of Government for providing safe drinking water. The focus of the present study was on removal of arsenic from groundwater by alum based arsenic removal unit. Apart from the status of arsenic in the environment the report gives an overview of the different arsenic removal techniques. Finally, detail effect of source water composition on arsenic removal by alum, followed by field testing of alum based household arsenic removal unit have been delineated in the report.
Contamination of groundwater with arsenic is considered as a major challenge in the water supply sector of Bangladesh. ITN-BUET has conducted a number of researches on arsenic issue. In continuation of ITN-BUET initiatives, a research on “Leaching of Arsenic from Wastes of Arsenic Removal Systems” was conducted by ITN-BUET during 2001 to 2002. This publication is the outcome of this initiative.
Almost all the materials used for filtration in the process of removing arsenic, get clogged after prolonged use. Some of these units may be regenerated by washing with water or other reagents. However, after certain time the filter column has to be discarded. These spent filter media are likely to contain very high level of arsenic following continuous accumulation. Also, some of the arsenic removal units generate liquid sludge containing high level of arsenic associated with iron flocs. Indiscriminate disposal of these spent media or sludge is likely to contaminate the surface water sources or may leach arsenic, which may be transported to the underlying aquifer. This study focused on determining the leachable arsenic from adsorbed filter media and sludge under anaerobic conditions created by decomposing organic wastes.
ITN-BUET conducted a research on the social aspect of solid waste management titled ‘Waste Pickers’ Livelihoods, their Vulnerability and Possible Measures to Overcome the Existing Condition’ during 2008-09, an area which received very little attention previously for research within the domain of solid waste management. The publication is the outcome of this study.
The publication provides an overview on the risks associated with the livelihood of waste pickers and possible ways to minimize the vulnerabilities. It includes their socio-economic condition, working environment and access to basic services. The study reveals that, despite the significant contribution of the waste pickers in the solid waste management system, their service is not recognized. This marginalized group is deprived of the basic human needs and leads a miserable life where the magnitude of risks and vulnerabilities are very high. The report emphasized on the importance of immediate attention of the policy makers to improve the livelihood condition of the waste pickers.
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