Performance evaluation of Phum Prek water treatment and distribution system | |
| Author | Va Dany |
| Call Number | AIT Thesis no. EV-99-33 |
| Subject(s) | Water--Purification--Cambodia--Phnom Penh Water--Cambodia--Phnom Penh--Distribution |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Forty percent of population in Phnom Penh City, Cambodia, are served by piped water. Presently, there are two treatment plants; Chamkar Morn and Phum Prek with a total capacity of 0.12 million m 3 I day, fed by the Bassac and Sap Rivers. Better performance is necessary for any water supply system and can be determined by the evaluation process. Water treatment plant performance is evaluated at Phum Prek by field visits and lab scale assessment. Administrative performance was evaluated through staff and operator interviews, field observation and information reviews. The cun-ent status of piped networks was evaluated in terms of distributed water quality. The existing water supply service was also studied to determine customer satisfaction and willingness to pay for in-house connections and improve service. It was found that the existing facilities such as alum feed pumps, flash mixers and flocculators were not well maintained. The cunent jar test procedure does not follow the recommended protocol. The application of a coagulant standard curve was not practiced and it was noted that raw water turbidity fluctuates hourly. Filter backwash procedures were not clean and more frequent than plant requirements. The filter run duration was longer than 52 hours for filter numbers 1, 6, 11 and 12 while the operated filter run length ranged from 24 to 30 hours. Sand loss is great. The total process efficiency in terms of turbidity removal is 97.4 %. There was scant supply of safety materials and chlorine dosages were very low. Plant policy interferes with plant needs. Administrative planning was poor. Treated water quality is under the guideline values, but distributed water quality is low. It was found that 25 % and 44 % of samples collected from new and old pipes are contaminated by coliform pathogens and very low F AC concentrations, but these results are better in comparison to previous years. Regarding present water supply service, 42 % of the respondents were not satisfied, but most are willing to pay more to improve it. |
| 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) | Annachhatre, Ajit P. ;Takizawa, Satoshi ;Preeda Parkpian; |
| Scholarship Donor(s) | Swedish International Development Cooperation Agency (SIDA) ; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1999 |