Fenton试剂深度处理造纸厂二级生化出水

摘要

利用Fenton试剂处理某造纸厂二级生化出水,确定出准确可行的COD测定方法。研究结果表明,在pH=5,n（H2O2）∶n（FeSO4）=2∶1,3%双氧水的投加量为2 mL/L水样,反应60 min的条件下,处理出水的COD含量降至50 mg/L以下,达到GB18918-2002国家一级A排放标准。%Fenton reagent was used to treat the secondary biochemical effluent from a paper mill. Accurate and feasi -ble method for COD measurement was confirmed. It showed that with pH=5,n（H2O2）∶n（FeSO4）=2∶1, the dosage of H2O2（3% ） was 2 mL/L, and oxidation time was 60 min, the COD could be reduced to less than 50 mg/L which can meet the state＇s first class A emission standard of GB18918 -2002.