MIT2_500s09_sw03_report

MIT2_500s09_sw03_report - MIT OpenCourseWare...

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MIT OpenCourseWare http://ocw.mit.edu 2.500 Desalination and Water Purification Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .
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A Proposal and Analysis of Water Desalination Systems for the Villages of Phaeton and Paulette in Haiti 2.500: Water Desalination and Purification Technologies Class Project 1
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Table of Contents 1. Introduction 2. Assessment Framework 3. Membrane System Concept 3.1 Cost 3.2 Maintenance 3.3 External Problems 4. SSE System Concept 4.1 Cost 4.2 Maintenance 4.3 External Problems 5. Solar System Concept 5.1 Cost 5.2 Maintenance 5.3 External Problems 6. Short term Suggestions 7. Conclusion & Recommendations 8. References 9. Appendices 2
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1. Introduction This paper proposes and analyzes multiple water desalination systems, to provide a drinkable water source for two villages in Haiti. After presenting the background and motivation for our work, we will proceed to establishing the assessment framework we will use to compare the different water desalination systems proposed. Following that we will analyze the systems proposed by the authors using the established framework. At the end of the paper, we will also propose multiple short term solutions that can be used to provide cheaper fresh water until a longer term solution is implemented. Finally conclusions and recommendations for solving this problem are presented. Paulette and Phaeton are two poor villages in Haiti whose inhabitants live on less than $1 a day. People living in those villages have no local drinking water infrastructure. For their daily supply of fresh water, they depend on water from a nearby town called Ti Kampeche, which is pumped by means of a diesel-driven pump to two stations; each station is a few kilometers from its respective town. Residents of both villages have to pay a price of $0.024 for a bucket of this water, equivalent to a price of $0.0048 per gallon. It is estimated that each family consumes five to seven buckets of this water. Water from this water that reaches Phaeton has TDS of 650ppm, while that of Paulette has TDS of 450ppm. We are uncertain whether this water is always safe (free of bacteria, not too brackish for small children or in the long run…) and if the health problems are only caused by drinking water from the other community well, or if this pumped water is also a health hazard. It is estimated that there are 500 and 350 families in Phaeton and Paulette respectively. Given that people are very poor in those villages not everyone is able to afford water from Ti Kampeche and instead, some people drink unsafe water from hand dug wells and community wells which have been contaminated with sea water. It is highly probable that these wells are unsafe because they are not sealed properly. They might have been contaminated with bacteria and other types of biological microbes. In addition they have salinity above 600 ppm, all of these are reasons for negatively affecting the health of the villagers. The community wells used to use
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This note was uploaded on 02/27/2012 for the course MECHANICAL 2.500 taught by Professor Miriambalaban during the Spring '09 term at MIT.

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MIT2_500s09_sw03_report - MIT OpenCourseWare...

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