| Author | Anchalee Natikool |
| Call Number | AIT Thesis no. EV-97-03 |
| Subject(s) | Sewage--Purification--Precipitation
|
| 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 |
| Series Statement | Thesis ; no. EV-97-03 |
| Abstract | This study investigates the feasibility for the operation of domestic wastewater
treatment by chemical precipitation. In this study AIT wastewater was employed as a
domestic wastewater being treated. Three coagulants which are ferric chloride,
polyaluminium chloride and ferric sulfate were employed as a coagulants. Jar test which was
used to determine the optimum coagulant dosage and pH results that the most appropriate
coagulant, among above three coagulants, for applying with AIT wastewater treatment is
fenic chloride. The optimum dosage and pH of ferric chloride are 400 mg/l and 8.0
respectively.
By applying ferric chloride as a coagulant for AIT wastewater treatment through a
chemical precipitation, it is found that the effluent concentration are met requirement of the
DEG. The effluent concentration and the removal efficiency for removal of BOD, TSS, TDS,
Org-N and TP, which are 16 mg/l, 4 mg/l, 15 mg/l, 4 mg/l, and 0.4 mg/l respectively, and
70%, 89%, 32%, 33% and 80% respectively, can be achieved through chemical treatment
system. From comparison between chemical treatment process and biological treatment
process, it is interesting to indicate that the chemical treatment process has more advantages
over the biological treatment process.
As above it can be indicated that chemical wastewater treatment is an acceptable
method for domestic wastewater treatment, and can replace the conventional biological
treatment system. |
| Year | 1997 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-97-03 |
| 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) | Samorn Muttamara; |
| Examination Committee(s) | Chongrak Polprasert ;Ha, Sung Ryong; |
| Scholarship Donor(s) | Electricity Generating Authority of Thailand ; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1997 |