| Author | Prakit Tancharoen |
| Call Number | AIT Thesis no. 1249 |
| Subject(s) | Factory and trade waste
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand |
| Publisher | Asian Institute of Technology |
| Abstract | The processing lines of the vegetable oil industry were investigated. The sources of wastewater were analyzed for physical, chemical and biological characteristics and their flow variations. The results indicated
that the waste contained oil, very high COD, most of which were soluble and biodegradable. The nitrogen and phosphorous were low compared with COD concentrations. pH was very low. Results from treatability study indicated that biological treatment of this wastewater would be most appropriated.
Continuous flow oil trap study showed that with 3 hours detention time, the oil removal was about 77%. After neutralizing with NaOH, two stage anaerobic ponds with 16 days detention time showed better performance than
anaerobic digestion. The loading of 1.94 kg COD/m3-day in the first pond 3 gave 63% COD removal where as 66% COD removal was observed at 0.51 kg COD/m day loading in the second stage pond. Extended aeration process yielded a
COD removal as high as 96% at organic loading of 0.79 kg COD MLSS-day. Effluents from these systems contained about 85 mg/l of COD and 21 mg/l of
BOD5 which conformed to the effluent standards established by the Ministry of Industry of Thailand. |
| 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 |
| Scholarship Donor(s) | Government of United Kingdom |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1977 |