摘 要焦化厂剩余氨水是冶金钢铁行业含氨氮较高的污染源。国内焦化厂为脱除剩余氨水中的氨氮，一般均采纳传统的直接蒸汽汽提蒸氨法，蒸氨废水经生化处理后循环使用或外排。但此方法存在成本高，能耗大，脱除率较低，生化处理负荷大等问题，而且长期以来国内氨氮一直未达到国家废水处理的排放标准。因此，迫切需要对焦化厂除氨氮的方法进行改进，使之更符合节能、环保技术经济的要求。 本文利用“煤气吹脱解吸法”中试所得到的最佳数据设计了一条煤气吹脱解析法处理 100 万吨焦化厂剩余氨水的工艺，利用硫氨工段后的贫氨煤气对剩余氨水进行吹脱，吹脱后的富氨煤气再送到硫氨工段脱氨，从而达到对剩余氨水的处理效果。采纳的都是一些较新型的设备，如陶瓷膜过滤器，漩流式反应器，吹脱塔等。而且与传统直接蒸汽蒸氨法相比．具有运行成本低、工艺简单、便于操作等优点。以及与 A2/O 生化处理工艺的适应性，取得了较好的效果，经处理后的废水中氨氮的脱除率达到 95%以上，大大减轻了 A2/O 法的负荷，为焦化剩余氨水的综合处理指出了一条新路线。 关键词： 剩余氨水； 煤气吹脱解吸法； 氨氮的去除AbstractSurplus ammonia water of Coking and Chemistry Plant is the metallurgical steel trade pollution sources higher in ammonia nitrogen content. Domestic Coking and Chemistry Plant in order to remove ammonia nitrogen from surplus ammonia water, adopt traditional direct steam stripping , steam ammonia law generally, steam the ammonia waste water is recycled after biochemistry deal with or discharged . But this method exists high costs , energy consumption heavy, low removal rate , biochemistry handle load problem such as being heavy , and domestic ammonia nitrogen did not reach national discharge standard of waste water treatment for a long time. So, the method of ammonia nitrogen removal needs to improve in Coking and Chemistry Plant urgently and make it accord with the demands for energy-conservation , technological economy of environmental protection even more.This text use the the best data gain from " ...
