电催化氧化技术降解焦化废水

CODcr,,,,O2O2H2O2O2+2H++2eH2O2(1)O2+H2O+2eHO2-+OH-(2)HO2-+H2OH2O2+OH-(3)FentonFe2+H2O2H2O2Fe2+OHOHCO2H2OCODcrFentonFe2+Fe3+,Fe2+Fe2+Fe2+Fe2+H2O2Fe2+[6]Fe2++H2O2Fe3++OH-+OH(5)Fe3++H2O2Fe2++HO2+H+(6)Fe3++eFe2+(7)5OH5Fe2+67Fe2+Fe2+Fe2+Fe2+OHFe2++OH+H+Fe3++H2O(8)Fe2+CODcrOHFentonCODcr11.1Ph6~9CODcr180~200mg/l1.2CODcr:1.310~200.2L,pH2phCODcr2.1CODcr60min1000mg/lph3CODcrCODcr2.2CODcr12V1000mg/lph3CODcrCODcr2.3CODcr12V60minph3CODcrCODcr2.4pHCODcr12V60min1000mg/lpHCODcrpHCODcr2.51)Fe2+H2O2Fe2+FentonCOD2Fe2+H2O2Fenton3H2O2Fe2+H2O2FentonphphCODcr33.1pH3.2CODcrA-A-O