| Author | Chalor Jarusutthirak |
| Call Number | AIT Thesis no. EV-95-7 |
| Subject(s) | Sewage--Purification--Ozonization
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| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Science. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-95-7 |
| Abstract | The experiments are conducted to investigate the efficiency of ozonation and chemical coagulation in removing the color and chemical oxygen demand (COD) of dyeing wastewater. Three types of artificial dyeing wastewater, identified as reactive, vat, and disperse dyeing wastewater are used in the batch mode of operation. The industrial textile dyeing wastewater is investigated in both batch and continuous test. Ozonation is observed to achieve the highest efficiency in color removal for reactive dyeing wastewater. More than 90% of color removal efficiency is obtained in less than 10 minutes of ozonation time. The results also show that it is not efficient for reducing the color of vat and disperse dyeing wastewater. Chemical coagulation using polyaluminium chloride (PAC) is found to be effective in removal of COD, suspended solid (SS), and color for vat and disperse dyeing wastewater, but ineffective for reactive dyeing wastewater. The removal rate of 99% is achieved in decolorization of vat and disperse dyeing wastewater. The treatment efficiency of each process can be further enhanced when used in conjunction together. Combining ozonation and PAC-coagulation is employed for treatment of textile dyeing wastewater. Either ozonation before PAC-coagulation or PAC-coagulation before ozonation is able to consistenly reduce more than 90% for color and more than 50% for COD. These processes can provide a very effective means for dealing with the particular type of industrial effluent. |
| Year | 1995 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-95-7 |
| 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) | Visvanathan, C.;Sompo! Boonthanon |
| Scholarship Donor(s) | Asian Development Bank |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 1995 |