降膜法脱氨氮的技术可行性及影响因素浅析

Analyses of the Feasibility and Contributing Factors of Falling Film Process on Removal of Ammonia Nitrogen

对煤气化废水的特性和处理现状进行了阐述和分析,总结了降膜技术在煤气化高氨氮废水中的脱氮效果和液泛气速、膜厚、pH值、温度的关系。研究表明,降膜技术可将氨氮去除率提高到95%以上,同时降低调整pH值的药剂成本,并有效缓解结垢现象,在类似工业废水处理项目中具有较好的推广应用价值。

The characteristic and treatment status of coal gasification wastewater has been discussed and analyzed and am- monia nitrogen removal efficiency of the falling film process in treatment of coal gasification wastewater is summarized, as well as the effects of flooding velocity, film thickness, pH value and temperature on ammonia nitrogen removal. The results show that ammonia nitrogen removal rate can be increased to above 95 %, the reagent cost of pH adjustment be reduced and scaling phenomenon be effectively alleviated, which is prospective and should be spread in the similar industrial waste water treatment projects.