摘要：

采用Fenton-NaClO组合氧化法对煤制甲醇污水进行深度处理。确定了最佳的Fenton氧化条件：H₂O₂投加量为90 mmol/L，Fe²⁺浓度为30 mmol/L，pH=4，反应时间为60 min。最佳的NaClO氧化条件：pH=6，NaClO浓度为40 mmol/L，反应时间为60 min。经Fenton-NaClO组合氧化法处理后，出水COD、氨氮分别从280、130 mg/L降到43、8 mg/L，均可满足《污水综合排放标准》（GB 8978—1996）中规定的一级排放标准。采用Fenton-NaClO组合氧化法对煤制甲醇污水进行深度处理。确定了最佳的Fenton氧化条件：H₂O₂投加量为90 mmol/L，Fe²⁺浓度为30 mmol/L，pH=4，反应时间为60 min。最佳的NaClO氧化条件：pH=6，NaClO浓度为40 mmol/L，反应时间为60 min。经Fenton-NaClO组合氧化法处理后，出水COD、氨氮分别从280、130 mg/L降到43、8 mg/L，均可满足《污水综合排放标准》（GB 8978—1996）中规定的一级排放标准。

关键词: 组合氧化法, Fenton氧化, NaClO氧化, 煤制甲醇污水

Abstract:

Fenton-NaClO combined oxidation has been used in the advanced treatment of coal-to-methanol wastewater. Firstly,the best Fenton-oxidation conditions are determined as follows:90 mmol/L of H₂O₂,30 mmol/L of Fe²⁺,pH=4 and reaction time 60 min. After the Fenton effluent has been treated by NaClO oxidation process again,the pH=6,NaClO concentration is 40 mmol/L,and reaction time 60 min. After it has been treated by Fenton-NaClO combined oxidation process,a decrease in COD from 280 mg/L to 43 mg/L and in ammonia-nitrogen from 130 mg/L to 8 mg/L occur. All can meet the requirements for the first class discharge standard,specified in the Integrated Wastewater Discharge Standard(GB 8978—1996).

Key words: combined oxidation process, Fenton oxidation, NaClO oxidation, coal-to-methanol wastewater

中图分类号: 

• X703.1