| Author | Kamulyan, Budi |
| Call Number | AIT Thesis no.EV-90-10 |
| Subject(s) | Sewage--Purification--Filtration
|
| Note | A Thesis submitted in partial fulfillment of the requirements
for t he degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Deep bed filtration- has been used successfully as tertiary
wastewater treatment in some treatment plants. Several studies
have been conducted mainly with the conventional filter which
is equipped with the coagulation and sedimentation as
pretreatment facilities. The effectiveness of this filter was
studied mainly in reducing the suspended solids of the
secondary treatment plant effluent. Not much data is avail able
on the removal of biological parameters.
Semi
experiment.
dual - media
pilot-scale deep bed filter was used in the
Different types of filters like coarse medium ,
and declining rate filters were tested for their
applicability in treating secondary effluent. Experiments with
different operating conditions were carried out in order to
investigate its performance in terms of headless development ,
filter run length and removal of turbidity, suspended soli ds ,
COD, BOD, Phosphorus and TKN. The operating conditions included
coarse single- medium filtration of 0.84- 1.19 mm and 2.00-2 . 38
mm, dual -media consisting of anthracite of 1 . 41-1.68 mm in size
over sand of 0. 71 - 0.84 mm in size , constant and declining rate
filtration, with or without flocculant addition.
Comparative study with different operating conditions
indicated that dual -media filter with declining rate filtration
arrangement provided relatively long filter run and high
filtrate quality. This filter provided a filter run length of 5
hours and produced filtrate volume of 214 1, while the average
filtrate quality varied between 62 . 7% to 88.8% . In this
study, filtration with contact flocculation arrangement. was
used as single step treatment which will reduce the capital
cost significantly although operating cost may be little higher
due to short filter run. The mobile bed filter will solve this
problem of frequent washing. |
| Year | 1990 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Vigneswaran, Saravanamuthu
|
| Examination Committee(s) | Samorn Muttamara ;Mino, Takashi
|
| Scholarship Donor(s) | The US-ASEAN Human Resources Development
Scholarship |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1990 |