Oxidation catalyst, method for preparing the same, method for recycling the same and method for treating wastewater using the same
US6623648B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2001 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Nov 1, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/917
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Disclosed are an oxidation catalyst suitable for use in treatment of nonbiodegradable wastewater, a method for preparing the same, a method for recycling the same and a method for treating wastewater using the same. The oxidation catalyst comprises an activated carbon support having surface reformed with a tin compound, in the form of particles, powders and pellets, and metal ions impregnated to surface of the support. The preparation method of the oxidation catalyst comprises reforming surface of an activated carbon support in the form of particles, powders and pellets, impregnating various metal ions to surface of the support, drying the metal-impregnated support, and sintering the metal-impregnated support. In addition, the recycling method of the oxidation catalyst comprises drying the oxidation catalyst used for treatment of nonbiodegradable wastewater, and warming-up at 50-100° C. in a double boiler or sintering at 150-500° C. in a furnace the dried oxidation catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.