高效接触氧化-分段进水A/O工艺处理咖啡因生产废水的中试研究

摘要

Combined contact oxidation and step-feed A/O process were used to treat caffeine production wastewater.The pilot-plant results showed good effects on caffeine production wastewater treatment.Effluent with residual contents of below 300 mg/L (removal rate above 85％),30 mg/L (removal rate above 90％) for COD and NH~-N respectively were obtained.The process had strong resistance to the load capacity of inflow,and could treat the high salinity and high organic nitrogen wastewater with good economic benefits.%采用“高效接触氧化-分段进水A/O”工艺处理咖啡因生产废水.结果显示:在中试实验条件下,该技术对咖啡因生产废水具有良好的处理效果,出水ρ(COD) ＜300 mg/L,去除率达85％以上;出水ρ(NH3-N)＜30 mg/L,去除率达90％以上.整套工艺对进水具有较强的耐冲击负荷能力,可适应高盐度、高有机氮废水,具有较好的经济效益.