Waste minimization in a block rubber (STR20) factory in the south of Thailand | |
| Author | Teerasit Tantasuralerk |
| Call Number | AIT Thesis no.EV-01-20 |
| Subject(s) | Waste minimization--Thailand, Southern Rubber industry and trade--Waste minimization |
| 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 in a medium size of block rubber (STR20) factory in Thailand. The maximum production capacity is 1,200 tons a month. The company produces excellent quality product for in country uses and exportation. At present, STR20 is produced around 31.2 tons a day. The water usage in the production process originates from a treated wastewater. The water consumption is approximate 3,350 m3 per day. Currently, the existing wastewater treatment plant does not meet the effluent standard of Thailand. A waste auditing study was conducted in order to solve the problems by waste minimization in the block rubber (STR20) production process and improve operation of the treatment plant. The wastewater generations of 2,550 m 3 /day in the production process and 480 m3/day of the wet scrubber are combined and sent to the effluent treatment plant. Waste minimization at source is proposed by waste segregation method. The wastewater streams are proposed to segregate based on SS concentration. A rock filter is suggested for reused pretreated wastewater in production process. Also, the grit chamber and chemical precipitation are introduced as pretreatment step to minimize waste at strong wastewater stream (rotary screen and cuplump storage). Moreover, the additional grit chamber is proposed to remove grit at the end of combined wastewater. In this case modification, BOD, COD and SS loading of overall wastewater discharged could be reduced 32%, 26% and 79% of existing situation. For the improvement of treatment plant, the pond depth, size of surface aerator, detention time and organic loading are adjusted to efficiency operation to meet standard. |
| Year | 2001 |
| 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 (EV) |
| Chairperson(s) | Samorn Muttamara |
| Examination Committee(s) | Chongrak Polprasert ;Nielsen, Per H. |
| Scholarship Donor(s) | Royal Thai Government Fellowships SERD |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2001 |