Color removal from On-Nooch's leachate by chemical treatment | |
| Author | Chang, Tung-nien |
| Call Number | AIT Thesis no. EV-88-4 |
| Subject(s) | Sanitary landfills--Leaching Leachate |
| Note | A thesis submitted in partial fulfilment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Analysis of leachate from On-Noach's solid waste disposal revealed high concentrations of color and COD, i.e., colour in the of 4,500 - 6,000 Hazen and COD of about 1,600 to 2,100 mg/L. A mainly to remove color from the leachate was thus undertaken powdered activated carbon, alum and ozone. site range study using The results of the treatment study have shown that with a dose of 20 g/L powdered activated carbon at pH 8, 94% of color, 75% of COD, 25% of TKN, 77% of TP, 80% of Cd, 90% of Cr and 70% of Hg were removed within 30 min of contact time. With coagulation process using an alum dose of 1,000 mg/L at pH 5.5 (without adding any alkalinity) removals of 92% of color, 72% of COD, 13% of TKN, 61% of T.P., 80% of Cd, 87% of Cr and 43% of Hg were observed. Utilization of ozone at a concentration of 331. 2 mg 0 3 /L was effective in removing 17% of color and 6% of COD from a leachate within one hour of contact time. Increasing 0 3 concentration to 1,324.8 mg 0 3 /L resulted in higher removal efficiency, i.e., 54% of color and 12% of COD. On comparison of the above results, it can be said that powdered activated carbon is one of the best chemicals for removing color and COD from On-Noach's leachate. |
| Year | 1988 |
| 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 Muttamara |
| Examination Committee(s) | Ahn, Kyu-Hong ;Kriengsak Udomsinrot |
| Scholarship Donor(s) | Republic of China |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1988 |