| Author | Maung Maung Soe |
| Call Number | AIT Thesis no.EV-93-22 |
| Subject(s) | Water--Purification--Filtration
|
| Note | A thesis submitted in partial fulfilment of the requirement for the degree of Master of
Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | All natural water environment e. g. rivers, has a self-purification capacity which help
improve their quality through reduction of BOD and recovery of DO, when some pollutants
are discharged into them. Rock bed filtration is one of such methods to enhance the self-purification
capacity of rivers and other water resources.
Two pilot-scale rock bed reactors were constructed and experiments were carried out
using two types of rock media with under two conditions of non-aeration and aeration
systems.
In the non-aeration system, two parallel filters were separately filled with broken
bricks in the first reactor and whole bricks in the second reactor at a mean BOD loading
of 22 g BOD/m2.d of first reactor and 18 g BOD/m2.d of second reactor.
After two months operation, both rock bed reactors were supplied with the aeration
inside and at the bottom of the reactor at a mean BOD loading of 16 g BOD/m2.d of first
reactor and 17 g BOD/m2.d of second reactor.
The experimental results revealed that the rock bed reactor with aeration system
showed an over-all superiority in purification efficiency as compared with the non-aeration
system. It can be concluded that, the rock bed filtration method is a low-cost and least-maintenance technique to treat the moderately-polluted water. |
| Year | 1993 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| 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) | Fujii, Shigeo; |
| Examination Committee(s) | Murthy, D.V.S.;Lee, Seong-Key; |
| Scholarship Donor(s) | Deutscher Akademischer Austauschdienst (DAAD); |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |