蒽醌染整废水的混凝沉淀-Fenton催化氧化处理

采用混凝沉淀-Fenton催化氧化组合工艺对蒽醌染整废水进行处理，研究了混凝剂和Fenton试剂投加量以及各种反应条件对处理效果的影响。试验结果表明，当pH值为6．2、A12（SO4）3投量为300mg／L、PAM投量为3mg／L、沉淀时间为30min时，混凝沉淀出水的COD为233～260mg／L，色度为15～20倍；后续处理采用Fenton试剂催化氧化，当FeSO4投量为200mg／L、H2O2投量为100mg／L、pH值为5．0、反应时间为30min时，出水色度≤10倍，BOD5≤10mg／L，COD≤50mg／L。

Treatment of Refractory Anthraquinone Dye Wastewater by Coagulation and Sedimentation/Fenton Catalytic Oxidation Process

The coagulation and sedimentation and catalytic oxidation processes were used to treat anthraquinone dye wastewater.The pathways of refractory organics transformation and the treatment efficiencies influenced by reaction conditions and Fenton reagent dosages were investigated.The results indicate that after the coagulation and sedimentation process,when the pH value is 6.2,the dosage of Al2(SO4)3 and PAM is 300 mg/L and 3 mg/L,and the sedimentation time is 30 min,the effluent concentration of COD is 233 to 260 mg/L,chromaticity is 15 to 20 times.The catalytic oxidation process as subsequent process shows that when the dosage of FeSO4 and H2O2 is 200 mg/L and 100 mg/L,pH value is 5.0 and the reaction time is 30 min,the effluent chromaticity,BOD5 and COD are all lower than 10 times,10 mg/L and 50 mg/L,respectively.