Abstract
The paper reports on a study into the effects of ozone oxidation on concentrations of heavy metals and chemical oxygen demand (COD) of a returned activated sludge and bottom sediments of a local waterway. It is shown that heavy metals are released from the sludges as a result of ozone oxidation. Total chemical oxygen demand is found to decrease considerably in both the sludges after ozonation; however, dissolved COD showed a continuous increasing trend. This is perhaps due to formation of a new class of compounds (lower molecular weight) which were not present previously in the filtrate of the sludge.
| Original language | English |
|---|---|
| Pages (from-to) | 18-25 |
| Number of pages | 8 |
| Journal | Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan |
| Volume | 1 |
| State | Published - 1981 |
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Metals and Alloys
- Materials Chemistry
