甲胺废水资源化探究  

Reutilization of Methylamine Wastewater

作　　者：张文涛[1] 胡友彪[1] 高良敏[1] 宁桂兴[1] 

机构地区：[1]安徽理工大学地球与环境学院,安徽淮南232001

出　　处：《环境科学与技术》2011年第1期180-183,共4页Environmental Science & Technology

摘　　要：氨氮是引起水体富营养化的主要因素之一,甲醇引起水体缺氧而发黑、发臭。甲胺废水中含有大量的氨氮和甲醇,因此回收氨氮和甲醇不仅对水体有重大意义,而且可以实现资源再利用。文章介绍了氨氮和甲醇回收的技术方法,在此基础上提出沉淀—蒸馏法作为氨氮和甲醇的回收工艺,探讨了沉淀—蒸馏法应用于甲胺废水回收时工艺条件选择和影响。由于沉淀法回收氨氮效率一般达90%以上,得到沉淀物磷酸铵镁可以作为高效的缓释肥料;蒸馏法回收甲醇效率一般81%～92%,得到甲醇混合物可以进一步提纯;工艺实现过程中可以得到副产品混胺盐和铵盐,是一种含氮量较高的氮肥。因此在实现甲胺废水资源化过程中具有较高的优势。Ammonia nitrogen plays a key role in lake eutrophication,methanol causes water body to darken and stink short of oxygen.Since methylamine wastewater contains large amount of ammonia nitrogen and methanol,recovery of ammonia nitrogen and methanol is valuable not only in water body but also in realizing reutilization.Based on methods to recover ammonia nitrogen and methanol,deposition and distillation were suggested,with discussion of the process condition and effect in realizing methylamine wastewater reutilization.Since rate of recovering ammonia nitrogen is generally over 90% by deposition,the final product of MAP can be used as an efficient slow release fertilizer.Rate of recovering methanol is between 81% and 92%,methanol may be further purified,byproducts of amine and aminium salts are used as fertilizers.Deposition and distillation win great superiority in realizing reutilization of methylamine wastewater.

关 键 词：沉淀法 蒸馏法 甲胺废水 资源化 

分 类 号：X703[环境科学与工程—环境工程]