Kinetics and responses of anaerobic filters to trichloroethylene dosages | |
| Author | Liyanage, Lalith Raja Jayanandana |
| Call Number | AIT Thesis no.EV-93-32 |
| Subject(s) | Trichloroethylene Sewage--Purification--Filtration Biodegradation |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | The potential of anaerobic filters (AF) in treating a high strength waste containing trichloroethylene (TCE) was studied. The effects of TCE dosages on AF performance as well as kinetics were evaluated. TCE inflow concentration of 9 mg/l or less had little effects on COD removal. At higher TCE concentrations, both methanogenic and acidogenic bacteria were found to be inhibited. At the HRT of 72 and 12 h, the percent TCE removal from the AF reactors were 88 to 90. COD removal in the AF was modelled using the Monod-kinetics with competitive inhibition. The μmax, K8 , and Ki values were evaluated to be 0.11/h, 322.3 mg/l, 8.3 mg/l respectively. First order rate constant of SCOD removal in batch cultures was observed to reduce linearly with increasing TCE concentrations. TCE removal of AF reactor was observed to follow a linear relationship with TCE loading. Linear Michaelis-Menton kinetics were unable to describe the TCE biodegradation in AF. Even though volatilization and adsorption occur, the major removal mechanism of TCE was found to be biodegradation. Anaerobic filters were found to have a high potential in treating high strength TCE wastewaters. Biomass acclimatization was found to have a positive effect on the anaerobic filter performance in presence of TCE. |
| 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 (EV) |
| Chairperson(s) | Chongrak Polprasert; |
| Examination Committee(s) | Schroder, Hans;Bhattarai, Kiran Kumar; |
| Scholarship Donor(s) | Swedish International Development Agency; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |