Appropriate technology water treatment processes for MaeLa Temporary Shelter, Thailand

This thesis recommends the use of horizontal-flow roughing filters to treat spring water of variable annual quality in MaeLa Temporary Shelter, Thailand. The public drinking water system for 45,000 refugees is overseen by Aide Medicale Intemacionale, with which this project was conducted. Half the drinking water for the camp is provided by thirteen springs. The volume and turbidity of these springs varies annually, correlating with the rainy and dry seasons. Treating the varying turbidity and volume at these sources so that the water can be effectively disinfected is the treatment goal. Available materials and operation and maintenance capabilities are also design parameters. Horizontal-flow roughing filtration was determined to fit these parameters and a design with two equivalent filters operating in parallel is recommended. One important feature of the filters is baffles that dictate the flow path of water through the filter. A second feature is an outflow at the top of the filter that will maintain a constant water volume in the filter. The feasibility of the design is based on flow tests and turbidity measurements taken on site as well as weekly flow rates and turbidities for 2007 provided by AMI. The requirements for mechanical regeneration of the filter are also determined.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Civil and Environmental Engineering.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2008

Author dc:creator

• Vater, Katherine Ann

Advisor dc:contributor.advisor

• Peter Shanahan.

• Civil and Environmental Engineering.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/43875

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/43875