Charactristics of Fenton Process in Advanced Treatment of Acrylic Fiber Wastewater

The Fenton process was applied in the treatment of effluent from an acrylic fiber wastewater treatment plant.The influencing factors and optimum conditions during the Fenton reaction were studied,and pollution degradation according to UV and three-dimensional fluorescence.The results showed that: the CODCr removal rate quickly increased from 20.0% to 61.8% and then slowly decreased to 51.0%,while the pH increased from 1.5 to 6.0;the Fe2+ concentration increased from 0.8 mmol/L to 10.8 mmol/L;the CODCr removal rate quickly increased from 2.5% to 58.0% and then slowly decreased to 55.5%;and,the H2O2 concentration and reaction time had little influence on the CODCr removal rate.The orthogonal experiment indicated that the order of degree of influence on the CODCr removal rate was pH Fe2+ content H2O2 content reaction time.In optimum conditions(Fe2+ content 7.20 mmol/L,H2O2 content 0.16 mol/L,pH about 3,reaction time 90 min),the CODCr content could decrease from 308 mg/L to 103 mg/L,and the removal rate was 66.5%.The results of UV and three-dimensional fluorescence spectra indicated that all protein and most of visible humus and UV humus were removed.