| Author | Narong Surinkul |
| Call Number | AIT Thesis no.EV-01-12 |
| Subject(s) | Sewage--Purification--Nitrogen removal
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of
Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | This study was conducted to investigate the feasibility of using rock filters (RF) units
to treat percolate from constructed wetlands (CW) fed with a municipal septage. The main
objectives were to determine suitable operating conditions of the RF units in removing NH/-
N compounds and to develop a kinetic model for using in RF design and operation.
Within the effluent recirculation ratios (Q/Qi) of 0-2, a suitable HRT for the RF units
was found to be 2 days. The NH/-N removal efficiencies were found to increase with
increasing QrlQi ratios. A batch study revealed that NH4+-N removal in the RF units was due
to the Anammox reactions and nitrification/ denitrification reactions.
Within the experimental conditions employed in the study, tracer study showed the
flow pattern in the RF units to approach plug-flow conditions. A first-order kinetic model was
developed which correlated to NH/-N removal efficiencies with HRT, QrlQi ratios and
temperature. Although this kinetic model can be used in RF design and operation, more model
validation with full-scale RF performance data is recommended.
|
| Year | 2001 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| 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) | Nguyen Thi Kim Oanh;Fukushi, Kensuke |
| Scholarship Donor(s) | Asian Institute of Technology and Swiss Federal
Institute for Environmental Science and Technology; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2001 |