| Author | Krieattisak Sriaram |
| Call Number | AIT Thesis no. EV-99-23 |
| Subject(s) | Water-supply, Rural--Thailand
|
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of
Science, School of Environment, Resources and Development
|
| Publisher | Asian Institute of Technology |
| Abstract | Between January and May 1999, the Asian Institute of Technology, the Department of
Health(DOH) and the National Waterworks Technology Training Institute conducted a joint
field study to evaluate the performance of selected slow and rapid sand filter treatment plants
in small water supply systems in rural Thailand. Twenty filtration plants representing a
geographic and technical cross section were evaluated in terms of their physical, operation,
perfo1mance characteristics and examination of water quality. The study considered the
consistent turbidity of 5.0 NTU from each plant as an optimum level of filter performance for
surface water treatment. Seven of the 16 surface water treatment plants were rated acceptable
for performance at this study period. All four rapid sand filters of the groundwater treatment
had acceptable performance of iron in 0.3 mg/L and 0.1 mg/L of manganese. The number of
operators did not significantly limit performance of the plants; instead, the primary problems
were operational. Decreasing flows and increasing operating times were judged to be a
practical alternative for intermittent operation. Disinfection is essential to improve the
reliability of treatment. The approach of filter plant performance evaluation could lead to
successful improvement and decreased risk from waterborne disease by identifying
weaknesses and optimizing treatment. To achieve the maximum benefit, the filter plant
performance evaluation should be integrated with the existing DOH' safe drinking water
program. This study conducted the randomly collected samples in each the selected rapid sand
filter. Forty-eight samples were evaluated the hygienic quality in distribution system. Three
samples of turbidity, forty samples of free Ch and thirty-one samples of bacteria were not in
compliance with the WHO drinking water standards. Therefore boiled water is recommended
for drinking purpose. |
| Year | 1999 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Visvanathan, C.; |
| Examination Committee(s) | Samorn Muttamara ;N.C. Thanh ; |
| Scholarship Donor(s) | Partial Scholarship;Coffey MPW Pty, Ltd. (Australia) |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1999 |