| Title |
Steelers` Dust - catalyzed Oxidative Treatment of Dyeing Wastewater |
| Authors |
장윤영(Yoon Young Chang),배범한(Bum Han Bae),지원현(Won Hyun Ji),장윤석(Yoon Seok Chang),강정우(Jung Woo Kang) |
| Abstract |
This study attempts to elucidate the possibility of treating dyeing wastewater by steelers` dust/H₂O₂ system in a well-mixed batch reactor. Experiments were conducted to investigate the effects of operating variables such as pH, dust and H₂O₂ dosages and H₂O₂ injection method on the treatment efficiency. Contaminant concentrations were identified by TOC(Total Organic Carbon) analyzer. Experimental observations showed the possibility of steelers` dust as a catalytic reagent in the H₂O₂/dust system. The batch experiments showed that the optimal H₂O₂ and dust dosage, 20g/L dust + 1,500㎎/L H₂O₂ removed about 85% of initial TOC concentration(100㎎/L) within 30 min. And the TOC removal in the H₂O₂/dust system effectively proceeded only within a limited pH range of 3-4. The steelers` dust-catalyzed oxidative treatment of dyeing wastewater was more efficient compared with the FeSO₄-catalyzed system(Fenton oxidation) for the removal rate and the cost. |