Landfill lysimeter studies for leachate characterization and top cover methane oxidation | |
| Author | Onanong Tubtimthai |
| Call Number | AIT Thesis no. EV-03-14 |
| Subject(s) | Leaching Sanitary landfills -- Leaching Methane -- Oxidation |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-03-14 |
| Abstract | This study aims to determine the tropical climatic influence on leachate characterization, settlement variation and the top cover methane oxidation of on-going lysimeter studies (eight Pilot-Scale landfill lysimeters) under ambient conditions at AIT campus. Each lysimeter consists of 1.4 m diameter and 3.5 m height. These lysimeters contain wastes with different pre-treatment operational arrangement and top cover design. The leachate characteristic, leachate generation, settlement variation and climatic influence parameter had been continuously monitored since November 2001. The leachate generation and settlement pattern had followed the rainfall pattern. The significant of pre-treatment and lysimeter operation mode had direct effect on leachate quality and settlement pattern. Here the open dump lysimeter without top cover was recorded to have highest leachate generation and settlement rate. Open dump had lower COD and TKN concentration around three-fold and two-fold, respectively compared with Sanitary landfill (Reference lysimeter) while it reveals the highest both cumulative COD and TKN. In addition, pre-treated waste (compost lysimeter) not only had lowest leachate generation and settling, but also produced reasonable low COD, TKN concentration and load. In compost top cover soil, no methane emission was measured at surface level. The methane oxidation occurs along top cover profiles and maximum methane oxidation was found in range between 40-60 cm. depth. No significant methane oxidation occurs in other top cover design. The higher peak of methane emission from Methane Oxidation type I occurred around 0.0948 g/m2/d during prolonged dry period. The rainy season shows the significant influence on microorganisms both inside landfill body and top cover soil by enhance the activity of microorganisms. Landfill lysimeter operated by applied compost pre-treated waste followed by effective simple methane oxidation system can achieved advantages aspects by less leachate generation, better quality of leachate, reducing landfill gas production and methane emission from landfill. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-03-14 |
| 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) | Visvanathan, C. |
| Examination Committee(s) | Preeda Parkpain ;Oanh, N. T. Kim |
| Scholarship Donor(s) | Her Majesty the Queen |