Trihalomethane formation in Bangkhen water treatment plant | |
| Author | Ghazali, Zainuddin bin Md. |
| Call Number | AIT Thesis no. EV-89-2 |
| Subject(s) | Water treatment plants Trihalomethanes |
| 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 undertaken to investigate the trihalomethane formation in the water from the Bangkhen Water Treatment Pl ant . Potential changes in the raw water quality resulting from increased pollution, necessitates the investigation on the critical level of humic acid present in the water and the chlorine dosage, the two major parameters influencing the trihalomethane formation. Possible methods of trihalomethane r e duction were a l so studied. The study involved investigation of trihalomethane by varying, in turns , the humic acid levels and the chlorine dosages. Analysis of the trihalomethane was carried out by the head space method using a gas-chromatograph . This investigation reveal s that the trihalomethane level in the Bangkhen water is s till within the recommended 100 µg/Lmaximum limit. This maximum limit will be reached when the organic level in the water is about 5 mg/L interns of TOC or at chlorine dosage above 7 mg/L . Changing the chlorine disinfection to chlorine dioxide or ozone successfully reduces the trihalomethane formation . Furthermore , by u sing either of these two disinfectants, lesser dos age is required compared to chlorine. By boiling the water , 55- 65 percent of trihalomethane reduction can be achieved at boiling point while further boiling for 10 min, trihalomethane can be reduced to more than 95 percent. This method is feasible for in-house treatment for trihalomethane reduction. |
| Year | 1989 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Samorn Mutamara |
| Examination Committee(s) | Vigneswaran, Saravanamuthu ;Kriengsak Udomsinrot |
| Scholarship Donor(s) | German Academic Exchange Service (DAAD) Federal Republic of Germany |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1989 |