Fenton试剂强化铁炭微电解预处理高浓有机废水

Study on Pretreatment of High Concentration and Refractory Organic Wastewater by Ferric-Carbon Micro-electrolysis and Fenton Reagent

研究了Fenton试剂法强化铁炭微电解工艺对高浓度难生化有机废水的预处理效果。结果表明,当原水COD在9 000 mg/L、铁炭微电解反应时间为100 m in、pH值为2.2时,铁炭微电解对原水COD的去除率>45%;铁炭微电解出水再投加240 mg/L的H2O2(30%)进行Fenton试剂法处理,常温下反应50 m in对原水COD的去除率可提高到75%以上。铁炭微电解+Fenton试剂联合工艺的除污效果好、运行稳定、成本低廉,适宜对高浓度难生化有机废水的预处理。

The combined techniques of ferric - carbon micro-electro treating high concentration and refractory organic wastewater were studied. lysis and Fenton reagent for Results show that when the COD in influent is 9 000 mg/L, the reaction time for the micro-electrolysis is approximately 100 min and pH is 2.2, the removal rate of COD is above 45%. When the dosage of H202 （30%）is 240 mg/L and the reaction time is 50 minutes, the removal rate of COD is raised to above 75% in raw wastewater by Fenton reagent. Ferric - carbon micro-electrolysis and Fenton reagent techniques are highly efficient in removal of pollutants, stable in operation and low in cost, thus are suitable for treatment of high concentration and refractory organic wastewater.