| Author | Hoang Anh Le |
| Call Number | AIT Thesis no.EV-07-14 |
| Subject(s) | Air quality management--Vietnam
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| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-07-14 |
| Abstract | Brick making is a traditional and important industry in Vietnam. It is also known as a large air pollution emission source, especially in suburban areas. The study aims to use integrated monitoring - modelling tool to manage air pollution from a brick manufacturing community in Vietnam where currently there 45 kilns exist. Ambient air monitoring was done at 3 sites in the village to represent upwind, inside and downwind conditions. The average ambient air levels of carbon monoxide (CO); sulfur dioxide (SO2); PM2.5 and PM10 are 1,000-3,000g/m3; 100-800 ug/m3; 10-70g/m3 and 30-400g/m3, respectively. The meteorological condition was also monitored during the study period for the purpose of model results evaluation. Stack monitoring was conducted for one kiln, every day for a 7 day production batch. The ranges concentration of pollutants in the flue gas for CO, SO2 and SPM are 1,000mg/m3 - 1,700mg/m3, 200mg/m3 - 2,000mg/m3 and 100mg/m3 - 250mg/m3, respectively. The mass size distribution of SPM emitted was determined by a cascade impactor which shows that emission from brick making mainly contains coarse particles, i.e. around 65% of total SPM mass. For modelling task, the ISC-ST3 dispersion model was used. Emission input data was prepared based on the stack monitoring results. Meteorological input data was prepared for 1 year using the reanalysis data from NOAA with consideration of dry deposition. The model estimated concentrations of gases and SPM in the ambient air as well as the dry deposition of particles. The results of model present air quality current status which show that ambient concentration of SO, and SPM at study area would be much higher than Vietnam standards. Dry deposition of the SPM on to the surrounding rice paddies may also affect the crop yield. Emission reduction scenarios were constructed based on variation of number of kilns operating simultaneously. The results of ISC-ST3 model shows that with present emission level (no control techniques used) the most appropriate number of kilns to be simultaneously operated should be less than 8. Emission control devices should he used to reduce SO, and SPM emission from the kilns which will allow more kilns to operate simultaneously yet still providing, acceptable ambient air quality in the area. |
| Year | 2007 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-07-14 |
| 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) | Nguyen Thi Kim Oanh; |
| Examination Committee(s) | Visvanathan, C.;Chongrak Polprasert; |
| Scholarship Donor(s) | Norway; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2007 |