| Author | Yu, Yuemei |
| Call Number | AIT Thesis no. EV-96-43 |
| Subject(s) | Ozonization
|
| 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 | Ozone has been used extensively as a disinfectant but not been widely used as a
pretreatment for coagulation in water treatment processes. In this study, laboratory scale
experiments were conducted to investigate the effects of preozonation on particle
destabilization. Chao Phraya River water is chosen as raw water of this study since it is the
major source of water supply for Bangkok.
As a result, the optimum combination of ozone and coagulant dosage is found at
about ozone 0.5 mg/I with PACI 20 mg/I or alum 80 mg/I. Preozonation can reduce the
amount of coagulant, which in turn substantially reduces the volume of chemical sludge
that has to be handled.
It is also found that preozonation increased E260 removal that is surrgate
parameter for humic substances in natural water. As it was already found that organic
components in Chao Phraya River water are almost similar to those in Japan and USA (in
terms of reactivity to free chlorine, THM formation, molecular weight distribution,
E220/E260), findings obtained in this study could be applicable .to most of natural waters. |
| Year | 1996 |
| 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 (EV) |
| Chairperson(s) | Kamei, Tasuku |
| Examination Committee(s) | Annachhatre, Ajit P. ;Yang, Byung-Soo
|
| Scholarship Donor(s) | Asian Institute of Technology Partial Scholarship |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 1996 |