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Alternatives in slow filtration for treatment of tropical surface water | |
| Author | Leow, Huan Nam |
| Call Number | AIT Thesis no.994 |
| Subject(s) | Water--Purification--Filtration |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science of the Asian Institute of Technology, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | A pilot plant consisting of series and dual media filters was operated discontinuously at a filtration rate of 0.15 m3 /m2-h under the average raw water turbidity of 45 JTU. The filters used were the coconut fiber - burnt rice husk series filter, burnt rice husk - sand series filter, burnt rice husk - sand and coconut fiber - burnt rice husk dual media filters. It was found that the burnt rice husk - sand dual media filter with the discontinuous operation could produce good quality water suitable for drinking purpose in term of its clarity and bacteriological content for a period of about 2~ months. Odor and anaerobic condition prevailed in the coconut fiber - burnt rice husk series and dual media filters. Due to the high head loss build up rate, the burnt rice husk was not suitable to be used as a roughing filter medium in the series filtration system. Preliminary study on the turbidity removal performance and head loss development of these filters operated continuously at a filtration rate of 0.15 m3 /m2-h but slowed down during the night time (16 h) were also conducted. |
| Year | 1976 |
| Type | Thesis |
| School | Student Research Before 1980 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Nguyen Cong Thanh |
| Examination Committee(s) | Samorn Muttamara ;Woo, K.Y. |
| Scholarship Donor(s) | Lee Foundation of Singapore |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1976 |