The treatment of CLT-acid wastewater by using micro-electrolysis and Fenton oxidation

The Fe/C micro-electrolysis and Fenton combined process was used to solve the high yield organic CLT acid wastewater in our country.The influence factors of pH,reaction time,ratio of iron and coke,H2O2 dosage and reaction time of H2O2 were investigated.The results show that when the influent COD is 28.1 g/L to 34.5 g/L,pH is 2.5,ratio of iron and coke is 2:1 and the reaction time is 60 min,the removal rate of COD by ferric-carbon micro-electrolysis is above 30%.For treatment with the Fenton when the H2O2(30%) dosage is 0.15 mol/L,the reaction time is 60 min and the temperature is 20 to 30 ℃,the removal rate of COD reaches more than 43%,B/C ratio of wastewater increases from 0.08 to 0.43.