Organic composition of landfill leachate and factors affecting biodegradability : case study of a young landfill | |
| Author | Qin, Xiaoning |
| Call Number | AIT Thesis no.EV-00-14 |
| Subject(s) | Sanitary landfills--Leaching Sewage--Purification--Biological treatment |
| Note | A thesis submitted in partial fulfillment of the requirement of the degree of Master of Science |
| Publisher | Asian Institute of Technology |
| Abstract | Laboratory experiments were carried out to reveal the characteristic of Phisanulok landfill leachate. Long-term CBOD value give some simple biodegradability of leachate. Temperature effect on BOD reveals the real biodegradation of leachate in landfill site. Organic composition and COD fractions are needed to know for design of treatment plant by Activated Sludge Model. Influent characteristic depended constants are important parameter for calibrating Model. Samples were collected in dry and rainy season respectively, in additional 13 days monitoring was carried out too. Automatic BOD determination machine, Oxitop system was used for long term CBOD and BOD determination at different temperature and with different dilution sample. Respirometry method was used for dete1mining COD fractions and finding out temperature effect on biological constants. Temperature effects on biodegradable process were conducted with biological constant analysis and biodegradable process monitoring. Result show that this young landfill leachate has high biodegradable characteristics in terms of high BOD5 value and long term BOD value. High concentration inhibitor which might cause significant suppress of biological process was not shown in this study. Characteristic of leachate sample was affected by the change of season. High organic acid concentration and high readily biodegradable COD fraction were found in this leachate sample. Temperature effects were found in BOD investigation, biological degradable process and biological constant investigation. Nitrification of this leachate sample seen to be constant in study temperature range 25°C to 30°C. Temperature effect on R x, max can be explained by the Modified Arrhenius Equation in 20°C to 35°C temperature range. Temperature effect on Ks does not show clear trend, but it is temperature depended. This leachate was quite easy biodegradable, biological treatment is a suitable treatment method. Respirometry method was a convenient and suitable method to analyze biological characteristics, which need to be known for using Activated Sludge Model. |
| Year | 2000 |
| 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) | Traenkler, Josef |
| Examination Committee(s) | Samorn, Muttamara;Visvanathan, C. |
| Scholarship Donor(s) | DAAD Partial Scholarship |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2000 |