Abstract
In this study, a new kind of photocatalysts was prepared by titanium dioxide, sodium dodecyl sulfate and copper. It was used to improve the biodegradability of textile wastewater under solar light. The effect of light intensity, dissolved oxygen and wastewater hydraulic remain time on the biodegradability improvement were researched. Experiments show that when the light intensity, DO and HRT are 2.1mW/cm2, 2.37mg/L and 3h, respectively, the B/C value of textile wastewater increases from 0.11 to 0.37, and DHA value increases from 3.72TF/(ml·h) to 22.68μgTF/(ml·h). Photocatalysis reactor combined with sequencing batch reactor was used to further treat textile wastewater. The results show that COD and BOD5 decline to 71mg/L and 18mg/L, respectively.
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