摘要：

采用FeCl₃预氧化-Fenton试剂氧化-Ca（OH）₂中和技术处理草甘膦废水，研究了FeCl₃投加量、H₂O₂投加量、预氧化-氧化时间及温度、中和pH等因素对草甘膦废水中甲醛、COD去除率的影响。结果表明，预氧化-氧化反应条件对甲醛去除率的影响较大，氧化-中和反应条件对COD去除率的影响较大。在最佳反应条件下，废水中甲醛的去除率可接近100%，COD去除率达到87%，处理出水达到《石油化工水污染物排放标准》（GB 4281-1984）的要求。

关键词: 草甘膦废水, FeCl₃, Fenton试剂, 甲醛, COD

Abstract:

FeCl₃ pre-oxidation-Fenton reagent oxidation-Ca(OH)₂ neutralization process has been used for treating glyphosate wastewater. The influences of the factors,such as FeCl₃ dosage,H₂O₂ dosage,pre-oxidation,oxidation time and temperature,neutralization pH,etc. on the removing rates of formaldehyde and COD from glyphosate wastewater are studied. The results show that the pre-oxidation-oxidation reaction condition has great influence on the removing rate of formaldehye,while the oxidation-neutralization reaction condition has great influence on the removing rate of COD. Under optimum reactions conditions,the formaldehyde removing rate from wastewater is close to 100%,and COD removing rate reaches 87%. The treated effluent meets the requirements specified in the Petrochemical Water Pollutant Discharge Standards(GB 4281-1984).

Key words: glyphosate wastewater, FeCl₃, Fenton reagent, formaldehyde, COD

中图分类号: 

• X703