Abstract:The fluorescent whitening agent wastewater was pretreated using Fenton’s reagent oxidization, ozone oxidization or aerate ferric-carbon micro-electrolysis method, in which various factors to treatment efficiency of each method were examined. For Fenton’s reagent oxidization under the optimal conditions where H2O2 dosage was 0.13 mol/L, H2O2 to Fe (II) molar ratio was 20, pH was 5.0, and the reaction time was 1.0h, the CODCr removal rate reached to 39.9% and the BOD5/CODCr to 0.51. For ozone oxidization the optimal conditions were: reaction time of 70min (the ozone dosage of 2.51g/L), pH at 9.2, under which the CODCr removal rate reached to 36.7% BOD5/CODCr to 0.47. For aerate ferric-carbon micro-electrolysis method the CODCr removal rate could reach to 57.1% the BOD5/CODCr to 0.45 under the optimal conditions of: iron to carbon weight ratio of 1, reaction time for 2.0h, and pH at 2.5. The organic matters in fluorescent whitening agent wastewater could be removed effectively and the biodegradability could be improved by each method. Comparatively the aerate ferric-carbon micro-electrolysis method had the highest CODCr removal rate and the lowest cost of wastewater treatment, suggesting the promising potential for the treatment of fluorescent whitening agent wastewater.
李江颂, 王健行, 李日强, 王爱英. 荧光增白剂生产废水不同预处理方法的比较[J]. 中国环境科学, 2010, 30(11): 1459-1465.
LI Jiang-Song, WANG Jian-Xing, LI Ri-Qiang, WANG Ai-Ying. Comparisons of several pretreatment methods for fluorescent whitening agent wastewater.. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(11): 1459-1465.