Treatment of chromium wastewater with regionally available reagents | |
| Author | Gang, Liaw Jeen |
| Call Number | AIT RSPR no. EV-87-2 |
| Subject(s) | Water-supply--Nepal Information storage and retrieval systems--Water-supply |
| Note | A research study 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 aimed to evaluate the flocculation and sedimentation performances in treating chromium wastewater by a few regionally available reagents-Kaolinite Clay (mesh no. 275, 380 and 500), Bentonite, Diatomite, and Alum. The experiment started at finding the dosage requirements and detention time required in a suitable pH range for the reduction of hexavalent chromium to trivalent chromium by Ferrous Sulfate and Sodium Metabisulfite. Varying amounts of flocculants (200, 300 and 400 mg z L) were used in Jar Tests to find the optimum dosage. The results from the Jar Test were applied to Scale Plant to check the flocculation capability during a continuous flow. a Pilot It was found that Clay can be used to' flocculate the precipitates of metal hydroxides in a more concentrated sludge form. |
| Year | 1987 |
| Type | Research Study Project Report (RSPR) |
| School | School of Environment, Resources, and Development |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Orth, H.M.; |
| Examination Committee(s) | Hanaki, K. ;Shin, H.S.; |
| Scholarship Donor(s) | DAAD; |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 1987 |