|
二维码(扫一下试试看!) |
Advanced Oxidation Integrated Technology for Advanced Treatment of Papermaking Wastewater |
Received:January 05, 2021 |
DOI:10.11980/j.issn.0254-508X.2021.04.016 |
Key Words:papermaking wastewater, activated carbon adsorption Fenton oxidation ozone catalytic oxidation |
|
Hits: 2785 |
Download times: 1763 |
Abstract:In this study, an advanced oxidation integrated technology of activated carbon adsorption+Fenton oxidation+ozone catalytic oxidation, applied to the treatment of papermaking wastewater was introduced. The results showed that the optimal treatment conditions were as follows: when the amount of activated carbon was 0.5 g/L and the adsorption time was 30 min, the CODCr removal rate could reach 60%; when the effluent was treated by Fenton oxidation process with addition amount of H2O2 was 0.25 g/L, n(Fe2+):n(H2O2)=1:4, and reaction time was 1.0 h, the CODCr removal rate could reach up to 32%; when the Fenton effluent was further treated by ozone catalytic oxidation, ozone concentration was 10%, H2O2 dosage was 0.1 g/L, gas-liquid ratio was 2:1, and reaction time was 1.0 h, the COD removal effect was the best. This advanced oxidation integrated technology could reduce the CODCr of wastewater from 180 mg/L to 25 mg/L with a removal rate of 86.1%, reaching the surface water level of Ⅳ class, and the integrated operation cost was ¥8.9/t. |
View Full Text HTML View/Add Comment Download reader |