中文摘要：

以造纸废水二级生化出水为处理对象,利用硫铁矿催化H2O2降解废水中生物难降解有机物.在最佳工艺条件下：废水初始pH值为4、矿物投加量为1g·L-1、H2O2投加量为50mg·L-1、反应时间为1h,使废水的化学需氧量（COD）从初始136.0 mg·L-1降低到44.8 mg·L-1.结果表明：硫铁矿具有较高的催化活性,能提高H2O2的利用效率,并且可重复利用.

英文摘要：

Effluent from secondary biological process for papermaking wastewater was employed as the model pollutants. Under the optimum conditions of the initial pH： 4, pyrite adding dosage： 1 g · L-1, H2O2 adding dosage： 50.0 mg· L-1, and the oxidation reaction time： 1 h, chemical oxygen demand （COD） of wastewater can decrease from 136.0mg· L-1 to 44.8 mg· L-1 The pyrite is found to be active to promote Fenton-like reaction with low cost due to high utilization efficiency of H2O2, furthermore, catalyst can be easily recovered from wastewater and reused.