Abstract:

Treating triazophos pesticide wastewater by Fenton reaction has been investigated. The effects of keyfactors including doses of FeSO₄·7H₂O and H₂O₂， pH， and stirring time on COD removal rate are investigated.The optimum conditions for the reactions are confirmed. The degradation of the combined wastewater andworkshop wastewater from Hunan Tianyu Chemical Pesticide Co.， Ltd. by Fenton reagent is studied. The resultsshow that the optimum conditions are as follows: for treating every 500 mL combined and workshop wastewater，the pH=4， dose of FeSO₄·7H₂O=2.5 g， and dose of 30% of H₂O₂=37.5 mL， and stirring time=90 min. The waterquality of the effluent can meet the national standards.

Key words: Fenton, triazophos, pesticide wastewater, wastewater treatment

摘要：

采用Fenton氧化法降解三唑磷农药废水,考察了FeSO4.7H2O、H2O2投加量、pH和搅拌时间等关键因素对三唑磷模拟废水的COD去除率的影响,确定了反应的最佳条件,并对湖南天宇化工农药有限公司的综合废水和车间废水进行了降解实验研究。结果表明:综合废水和车间废水处理的最佳工艺条件(每500 mL废水)均是pH为4、FeSO4.7H2O 2.5 g、30%H2O2 37.5 mL、搅拌时间为90 min;处理后水质可以达到国家标准。

关键词: Fenton, 三唑磷, 农药废水, 废水处理

CLC Number: 

• X703.1