微波-Fenton-活性炭法降解有机磷药混合废水试验研究

摘要

Microwave-Fenton-activated carbon combined process has been used for treating organophosphorus pesticides mixed wastewater. The effects of the initial concentration, initial pH, dosages of FeSO4 · 7H2O and H2O2, microwave power and microwave irradiation time,etc. On organophosphorus degradation effectiveness are studied. Under certain experimental conditions, 100 mL of wastewater whose COD is 360-400 mg/L is treated, when its pH is 3.5,dosage of activated carbon 3.0 g,dosage of FeSO4H2O 0.25 g,dosage of 30% of H2O2 1 mL,microwave power 680 W and irradation time 7 min,the treated effluent COD can be dropped to 40-44 mg/L and the average removal rate of COD reaches 89%.%采用微波-Fenton-活性炭组合工艺对有机磷农药混合废水进行处理.研究了废水初始浓度、初始pH、FeSO4·7H2O及H2O2投加量、微波功率及辐照时间等因素对处理效果的影响.结果表明:在一定的试验条件下,对100 mL COD为360～400 mg/L的废水,当pH为3.5,活性炭投加量为3.0g,FeSO4·7H2O投加量为0.25 g,30％ H2O2投加量为1 mL,微波功率为680W,辐照时间为7 min时,处理后的出水COD可降至40～44 mg/L,COD去除率平均达89％.