摘要：

采用无动力高效吸收-再生技术处理氨氮废水。实验结果表明，吸收液的盐度对氨氮废水的处理效果影响不大。在料液侧pH>11、流速为11.25 L/（h·m²），吸收液侧pH<2、流速为18.75 L/（h·m²）的条件下，当进水氨氮为1.2～45 g/L时，可确保出水氨氮<10 mg/L。吸收液以铵盐形式回收，回收率高达99%以上。采用无动力高效吸收-再生技术处理氨氮废水具有运行成本低、资源可回收、操作简单、管理方便以及无二次污染等优点。

关键词: 无动力高效吸收-再生技术, 氨氮废水, 资源回收, 疏水性微孔膜

Abstract:

Ammonia-nitrogen wastewater has been treated by unpowered and highly efficient absorption-recycling technology. The experimental results indicate that the salinity of absorption liquid does not have obvious effect on ammonia-nitrogen wastewater treatment. Under the following conditions:the feed liquid side pH is higher than 11, the flow rate is 11.25 L/(h·m²),the absorption liquid side pH is lower than 2,the flow rate is 18.75 L/(h·m²),when the ammonia-nitrogen concentration of the feed liquid is in the range of 1.2-45 g/L,it is assured that the effluent ammonia-nitrogen concentration can be less than 10 mg/L. The absorption liquid can be recovered in form of ammonium salts,and the recovery rate is as high as 99% above. The technology has many advantages,such as low operation cost,recoverable resources,easy operation,convenient management and no secondary pollution,etc.

Key words: unpowered and highly efficient absorption-recycling technology, ammonia-nitrogen wastewater, resource recovery, hydrophobic microporous membrane

中图分类号: 

• X703.1