Abstract
In this study, treatability of wastewaters generated from a water-based paint and allied products industry has been investigated. As the industry already houses a treatment facility that consists of a coagulation-flocculation unit followed by an activated sludge process, the experimental study focuses on using the existing treatment plant in the most efficient way. In this context the COD removal efficiencies and operating costs of different coagulants i.e., sodium bentonite, alum, FeCl 3 and FeSO 4 have been evaluated. By assessing the refractory COD content of the subsequent activated sludge system outlet, the coagulant yielding the optimal output has been addressed. The outcomes reveal that the optimum result can be obtained by applying 50 mg L -1 of FeCl 3 coagulant at the original pH of the effluent.
| Original language | English |
|---|---|
| Pages (from-to) | 1843-1852 |
| Number of pages | 10 |
| Journal | Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering |
| Volume | 41 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1 Sept 2006 |
Funding
This study was conducted as part of research activities of The Environmental Biotechnology Centre of The Scientific and Technical Research Council of Turkey. It was supported by The Research and Development Fund of Istanbul Technical University.
| Funders | Funder number |
|---|---|
| Istanbul Teknik Üniversitesi |
Keywords
- Coagulation
- Flocculation
- Industrial wastewater
- Inert COD
- Water-based ink and paint
