摘要
氨氮废水的大量排放会造成大量环境和健康问题,气隙扩散蒸馏作为一种利用废热驱动的氨氮废水处理技术,能有效去除氨氮。通过3D打印技术制作规则多孔介质,研究了气隙扩散多孔吸收(air gap diffusion porous absorption, AGDPA)新方法在不同结构参数和运行参数下的性能。实验结果表明:提高吸收液硫酸浓度可显著提升AGDPA的脱氨率(+3.5%)、氨通量(+16.5%)、氨的总传质系数(+21.2%)和氨分离因子(+51.7%)。多孔吸收器结构的选择对性能影响显著,3D打印非均匀(大孔面)多孔陶瓷的综合性能最优,其氨氮分离性能优于其他多孔结构。
The large-scale discharge of ammonia nitrogen wastewater can cause a large number of environmental and health problems.As a waste heat-driven ammonia nitrogen wastewater treatment technology,air-gap diffusion distillation can effectively remove ammonia nitrogen.In this paper,the performance of a new type of air-gap diffusion porous absorption(AGDPA)was investigated under different structural and operating parameters through 3D printing technology to fabricate regular porous media.The experimental results show that increasing the concentration of sulfuric acid in the absorbent can significantly improve the ammonia removal rate(+3.5%),ammonia flux(+16.5%),ammonia over mass transfer coefficient(+21.2%),and ammonia separation factor(+51.7%)of AGDPA.The choice of porous absorber structure has a significant impact on performance.The 3D printed non-uniform(large pore surface)porous ceramic has the best comprehensive performance,and its ammonia nitrogen separation capability is superior to other porous structures.
作者
王平
陈家权
张轩
窦浩源
尹文博
韩文帅
WANG Ping;CHEN Jiaquan;ZHANG Xuan;DOU Haoyuan;YIN Wenbo;HAN Wenshuai(School of Energy and Power Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《热科学与技术》
北大核心
2025年第6期558-563,共6页
Journal of Thermal Science and Technology
基金
国家自然科学基金资助项目(52176060)。
关键词
气隙扩散
多孔吸收
多孔介质
氨氮废水
air gap diffusion
porous absorption
porous medium
ammonia nitrogen wastewater
