CAJ | 학술논문

采用混凝-非均相Fenton氧化法对某印染厂的染色漂洗废水进行处理，在聚合硫酸铁的混凝作用和黄铁矿作催化剂的非均相Fenton的催化氧化作用下，废水中的污染物得到有效去除。考察了混凝剂投加量﹑混凝初始pH值﹑ H2O2投加量﹑氧化初始pH值﹑黄铁矿投加量及黄铁矿的重复利用等因素对污染物降低效果的影响，研究了黄铁矿催化氧化过程中铁离子形态和浓度变化过程。结果表明，在混凝剂投加量为120 mg∕L﹑混凝初始pH值为7﹑ H2O2投加量为0.12 mL∕L﹑氧化初始pH值为3﹑黄铁矿投加量为2.5 g∕L﹑氧化反应时间为1 h的条件下， CODCr总去除率达81%， TOC总去除率达67%。黄铁矿重复利用性能良好，具有很好的工程应用性。
채용혼응-비균상Fenton양화법대모인염엄적염색표세폐수진행처리，재취합류산철적혼응작용화황철광작최화제적비균상Fenton적최화양화작용하，폐수중적오염물득도유효거제。고찰료혼응제투가량﹑혼응초시pH치﹑ H2O2투가량﹑양화초시pH치﹑황철광투가량급황철광적중복이용등인소대오염물강저효과적영향，연구료황철광최화양화과정중철리자형태화농도변화과정。결과표명，재혼응제투가량위120 mg∕L﹑혼응초시pH치위7﹑ H2O2투가량위0.12 mL∕L﹑양화초시pH치위3﹑황철광투가량위2.5 g∕L﹑양화반응시간위1 h적조건하， CODCr총거제솔체81%， TOC총거제솔체67%。황철광중복이용성능량호，구유흔호적공정응용성。
Using coagulation-heterogeneous Fenton oxidation process to treat cloth washing and dyeing wastewater from a printing and dyeing mill, the pollutants could be effectively removed through the coagulation and heterogenous Fenton catalytic oxidation with polymeric ferric sulfate as the coagulant and pyrite as the cata‐lyst. The influences of dosage of coagulant, H2O2 and pyrite, initial pH values of the coagulation and oxidation, reuse performance of pyrite, and some other factors on pollutants removal were investigated;besides, the variation of iron ions forms and concentrations during the pyrite catalytic oxidation was studied as well. The results showed that, under the condition that the dosage of coagulant, H2O2 and pyrite were 120 mg/L, 0.12 mL/L, and 2.5 g/L respectively, the initial pH values of the coagulation and oxidation were 7 and 3 respectively, the oxidation time was 1 h, the total removal rates of CODCr and TOC reached 81% and 67% respectively. It also pointed out that, as pyrite performed a good reusability, it may have potential as a catalyst of heterogeneous Fenton oxidation in practical application.