| Author | Piyarat Srijaroonrat |
| Call Number | AIT Thesis no. EV-94-27 |
| Subject(s) | Sewage--Purification--Filtration
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master
of Science, School of Environment, Resources & Development |
| Publisher | Asian Institute of Technology |
| Abstract | Experimental studies were undertaken to investigate the performance of lab-scale and pilotscale AF (anaerobic filters) reactors subjected to different heavy metal loadings. The AF consisted
of two reactors, the first-stage and second-stage AF reactors; effluent of the first-stage AF reactor
was the influent of the second-stage AF reactor. Electroplating wastewater mixed with domestic
wastewater at different ratios were fed to the AF reactors.
Results of the lab-scale experiments indicated that Cu and Cr concentrations in the ranges
of 0.2-12.5 mg/land 0.12-1.0 mg/l, respectively, did not have much effects on the COD removal
efficiencies. When the first-stage reactor had high COD removal efficiencies, there was no
significant improvement in overall COD removal efficiencies from the second-stage AF reactor.
However, the second-stage reactor was found to be beneficial in removing heavy metals contained
in the influent wastewater. The pilot-scale AF reactors had better COD and heavy metal removal
efficiencies than the lab-scale AF reactors probably because of more biomass (VSS) present in
the former which helped in biodegrading and absorbing the COD and heavy metal compounds,
respectively. |
| Year | 1994 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Chongrak Polprasert |
| Examination Committee(s) | Wise, Donald L. ;Bhattarai, Kiran K.
|
| Scholarship Donor(s) | Airports Authority of Thailand |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1994 |