核晶凝聚诱导造粒法同步去除硬度和有机物的研究  

Study on simultaneous removal of hardness and organic matter by nucleate coagulation induced granulation

作　　者：辛浩然 李尧 金鑫[2] 金鹏康[1,2] XIN Haoran;LI Yao;JIN Xin;JIN Pengkang(School of Environmental and Municipal Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;School of Human Settlements and Civil Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055 [2]西安交通大学人居环境与建筑工程学院,西安710049

出　　处：《给水排水》2022年第1期76-82,共7页Water & Wastewater Engineering

基　　金：国家自然科学基金(52070151)。

摘　　要：针对石油废水中无机离子与有机物共存的特点,构建了一体化核晶凝聚诱导造粒装置,探究了该体系对石油废水中总硬度和溶解性有机物的去除效果和去除原理。研究结果表明:当氢氧化钠投加量为250 mg/L时,总硬度、钙离子和COD的去除率分别为88.35%、90%和52.92%。结合SEM和XRD表征结果发现钙离子主要以碳酸钙形式附着于初始晶种表面,并随着晶种不断生长形成表面疏松多孔的造粒体;EDS、FTIR和XPS对造粒前后造粒体表征结果显示,有机物成功附着于造粒体表面在总硬度去除的同时去除;三维荧光图谱结果显示,该装置对石油废水中腐殖质和蛋白质类有机物有良好去除效果。In view of the coexistence of inorganic ions and organic compounds in petroleum wastewater, an integrated nucleation agglomeration-induced granulation device was constructed, and the removal effect and reaction principle of the system on total hardness and dissolved organic compounds in petroleum wastewater were investigated.The results show that when the dosage of sodium hydroxide is 250 mg/L,the removal rates of total hardness, calcium ion and COD are 88.35%,90% and 52.92%,respectively.The results of SEM and XRD indicate that calcium ions mainly adhere to the surface of the initial seed in the form of calcium carbonate and form porous granulation with the growth of seed.The results of EDS, FTIR and XPS showed that the organic compounds successfully adhered to the surface of the granulated particles while removing the total hardness.The results of three-dimensional fluorescence spectrum show that the device has good removal effect on humus and proteinaceous organic matter in petroleum wastewater.

关 键 词：核晶凝聚 诱导结晶 石油工业废水 硬度 有机物 

分 类 号：X703[环境科学与工程—环境工程]