| Author | Thammarat Koottatep |
| Call Number | AIT Thesis no.EV-93-12 |
| Subject(s) | Sewage--Purification--Color removal
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master
of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | In this study, laboratory scale experiments were carried out to investigate the color
removal effectiveness of ozonation and the electro-chemical process. It included the
programming of color ADMI values determination and the evaluation of the ozonizer used
(Model OL 0.5/50A) as well. Dyeing wastewater from Asia Fiber Co., Ltd. was used as
source wastewater.
The application of ozone generated at various flowrates and contact time whereas
electro-chemical process tested at different conditions: batch study at constant voltage, batch
study at constant current and continuous study at constant current.
The investigations revealed that color of wastewater was removed more than 90% in
the electro-chemical process but only 50% by ozonation. The highest removal efficiency
obtained from the test of constant 15 ampere electro-chemical process. In the continuous
test, more than 90% color removal was still achieved. It seemed that electro-chemical
process was more appropriate technology in dyeing wastewater treatment unless further
treatment of sludge and. scum treatment was considered. Meanwhile ozonation had no sludge
production.
However, color hues of wastewater were changed obviously either effluent from
ozonation process or electro-chemical process: With contribution of ADMI software, color
values were presented more scientifically than conventional color measurement. |
| 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) | Samorn Muttamara; |
| Examination Committee(s) | Bhattarai, Kiran K.;Schroder, Hans; |
| Scholarship Donor(s) | Government of Switzerland; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |