| Author | Nujrudee Techapoonpon |
| Call Number | AIT Thesis no. 1087 |
| Subject(s) | Factory and trade waste
|
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Science of the Asian Institute of Technology, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | Production processes of the pharmaceutical industry were investigated along with the identification of wastewater sources. Wastes from main
polluting sources were analyzed for physical and chemical characteristics and their flow variations. The results obtained indicated that this waste
contained high COD, most of which is biodegradable and that nitrogen and phosphorous are present in concentrations sufficient to enhance microbial
metabolization. After biological treatability was evaluated, it was concluded that biological treatment method was to be adopted for this waste. Batch activated sludge study showed that the substrate removal phase was in the first 10 hours, and endogenous respiration took place after 10 hours aeration. COD reduction was 88%. Extended activated sludge process and aerated lagoon were operated so as to determine the optimum organic
loading of the system. It was found that organic loading at 0.4 kg COD/kg SS-day of the extended aeration process yielded a COD removal as high as 88%, and organic loading at 0.6 kg COD/kg SS-day of the aerobic lagoon gave a COD reduction around 89%. Effluents from these two systems contained BOD5 bel ow 20 mg/l which conformed to the effluent standard of the Ministry of Industry of Thailand. Also, an alternative treatment system was suggested, by employing chemical coagulation followed by biological treatment. The
adoption of a treatment system for an industry is confined by two major factors, land availability and costs including initial cost, operating and
maintenance cost. |
| Year | 1977 |
| Type | Thesis |
| School | Student Research Before 1979 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Nguyen, Cong Thanh |
| Examination Committee(s) | Samorn Muttamara ;Edwards, Peter
|
| Scholarship Donor(s) | Japanese Government |
| Degree | Thesis (M.Sc. ) - Asian Institute of Technology, 1977 |