氨氮废水的电渗析处理

Electrodialysis Treatment of Ammonia Nitrogen Wastewater

采用电渗析法处理氨氮废水,并对工艺中的条件进行了优化研究,在实验室条件下得到工艺参数为电渗析电压55 V,进水流量24 L/h。氨氮废水进水电导率为2920μs/cm,氨氮浓度为534.59 mg/L。出水室浓水和淡水各占19%和81%。浓水和淡水的电导率分别为14000μs/cm和11.8μs/cm;氨氮含量分别为2700 mg/L和13 mg/L。该电渗析装置处理后的氨氮废水不仅可以达到排放标准,而且可以满足回用要求。

The paper explored ammonia nitrogen wastewater treatment by the application of electrodialysis and optimization research was conducted with regard to technology process.The following technological parameters are obtained through laboratory study： electrodialysis voltage was 55V,intake flow was 24 L/h.Inflow conductivity of ammonia nitrogen wastewater was 2 920 μs/cm, ammonia nitrogen concentration was 534.59 mg/L.The percentages of high salinity water and freshwater in discharge chamber was 19% and 81% respectively.The respective electric conductivity of high salinity water and freshwater was 14 000 μs/cm and 11.8 μs/cm,the contents of ammonia and nitrogen was 2 700 mg/L and 13 mg/L respectively.The wastewater,through electrodialysis treatment,will not only reach the discharge standard,but also meet the requirement of recycle.