沸石吸附建筑灰水中氨氮特性及影响因素研究  

Study on Characteristics and Influencing Factors of Ammonia Nitrogen Adsorption by Zeolite in Building Greywater

作　　者：杨丰益 杨艳玲[1] 李星[1] YANG Fengyi;YANG Yanling;LI Xing(Faculty of Urban Construction,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学城市建设学部,北京100124

出　　处：《水处理技术》2024年第7期103-107,126,共6页Technology of Water Treatment

基　　金：国家重点研发计划专项(2018YFC0406203)。

摘　　要：建筑灰水的户内原位净化与回用是建筑灰水资源化利用的重要方式,采用吸附技术处理建筑灰水更具实用性。本研究表征了3种沸石的理化特性和氨氮吸附规律,探究了沸石理化特性、共存污染物对氨氮吸附性能的影响。结果表明,3种沸石的氨氮吸附过程均符合拟二级动力学和Freundlich等温线规律。十二烷基苯磺酸钠(SDBS)可提高沸石的氨氮吸附性能,但腐殖酸(HA)和牛血清蛋白(BSA)会造成氨氮吸附性能降低。氨氮吸附容量与外表面积、总孔容积、平均孔径、硅含量有较强的相关性,且与SDBS含量呈明显的正相关性,与HA和BSA含量呈较明显的负相关性;沸石外表面积、总孔容积、平均孔径的权重明显高于其他指标,SDBS的权重也较高,是影响氨氮吸附效能的重要因素。Indoor in-situ purification and reuse of building greywater is an important way to utilize building greywater resources,it is more practical to treat building greywater by adsorption technology.In this study,the physicochemical properties and ammonia nitrogen adsorption of three kinds of zeolites were characterized,and the effects of physicochemical properties of zeolites and coexisting pollutants on ammonia nitrogen adsorption properties were investigated.The results showed that the ammonia nitrogen adsorption process of the three zeolites conformed to the pseudo-secondorder kinetics and the Freundlich isotherm law.Sodium dodecyl benzene sulfonate(SDBS)can improve the ammonia nitrogen adsorption performance of zeolite,but humic acid(HA)and bovine serum albumin(BSA)will reduce the ammonia nitrogen adsorption performance.The adsorption capacity of ammonia nitrogen had a strong correlation with the external surface area,total pore volume,average pore size,and silicon content,and had a significant positive correlation with the content of SDBS,and had a significant negative correlation with the content of HA and BSA.The weight of external surface area,total pore volume,and average pore size of zeolite was significantly higher than other indexes,and the weight of SDBS was also higher,which was an important factor affecting the adsorption efficiency of ammonia nitrogen.

关 键 词：建筑灰水 回用 氨氮 沸石 吸附特性 

分 类 号：TU992[建筑科学—市政工程]