【摘要】 研究了吹脱-沸石吸附法处理荧光粉生产废水。正交试验结果表明:氨吹脱工艺中影响NH3-N去除率因素的重要性顺序为:pH>温度>气液比。当pH=11、气液比(V/V)=100∶1、温度T=40℃、吹脱时间t=120 m in,吹脱工艺对荧光粉生产废水中NH3-N的去除率为74.46%。试验确定的沸石吸附单元较佳的工艺参数为:滤速0.04 m/m in、接触时间14m in、pH=7.5,吹脱-沸石吸附工艺总NH3-N去除率96.04%。试验结果表明再生沸石氨吸附性能稳定,适于高氨氮的荧光粉生产废水处理。更多还原

【Abstract】 The treatment of phosphor industrial wastewater by stripping-zeolite absorb technology was studied.The orthogonal experimental results showed that the importance sequence of affecting factors on ammonia removal efficiency in stripping process were: pH>temperature>gas-liquid ratio.Under the conditions of pH=11、gas-liquid ratio(V/V)=100∶1、temperature=40 ℃、stripping time=120 min,the removal rate of ammonia nitrogen in stripping process is 74.46 %.The better technological parameters of zeolite-absorb process drew by experiment were: filtrate speed=0.04 m/min、touch time=14 min、pH=7.5.The total ammonia nitrogen removal rate of stripping-zeolite absorption process was 96.04 %.The ammonia nitrogen absoption capacity of the regeneration zeolite was stable and suitable for the treatment of the high ammonia nitrogen concentration wastewater such as phosphor industrial wastewater.更多还原