Study on Treatment of Pesticide Wastewater by Fenton Reagent

The treatment of pesticide wastewater by Fenton reagent was studied. Through studying the factors, such as H2O2 dosage, the proportion of [Fe2+] and [H2O2], the pH, the reaction time and Fenton reagent feed-in mode, which effects on CODcr and colourity removal. The best operating conditions determined are as follows, H2O2 dosage is 50 mmol/L, the proportion of [Fe2+] and [H2O2] is 1:10, the pH value is 3, the reaction time should last for 2 hours and the equality of Fenton reagent be added into the waste water for four times. After the treatment of pesticide wastewater by Fenton reagent, the CODcr and the colourity removal was up to 68.07% and 90.11%, respectively. Also the value of B/C was greatly improved.