Photoelectro-Fenton process was developed to treat the sludge liquor produced in deep dehydration. The results indicated that pollutants could be removed efficiently from the sludge liquor. Under the optimum condition of pH 3.0, H2O2 concentration of 65.3 mmol x L(-1), FeSO4 concentration of 6.53 mmol x L(-1) [ n(Fe2+): n (H2O2) = 1:10], 7.5V, the COD removal efficiency reached 59.0 % after 20 min treatment. The removal efficiency of TOC, TN, NH: -N and TP could reach 49. 3% , 20. 6% , 73.6% and 96.5% , respectively. This study would provide the reference for photoelectro-Fenton process in real wastewater treatment.
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