化工学报2024，Vol.75Issue(3)：1009-1018,10.DOI:10.11949/0438-1157.20231209
聚合铝钛基絮凝剂的合成与应用
Synthesis and application of polymerized Al-Ti based flocculant
摘要
Abstract
Polyaluminum titanium based flocculant is a new type of composite polymer flocculant,its effect is better than that of aluminum salt flocculant and titanium salt coagulant.The preparation method of composite flocculants has always been slow dropping alkali method,and electrodialysis method is a new preparation method.Electrodialysis can precisely regulate the hydrolysis polymerization of Al3+ and Ti4+ with OH-microinterface process,so as to obtain hydroxyl polymers with flocculating effect.In order to further understand the preparation mechanism of flocculant and the differences between the two preparation methods.First,the hydrolytic morphology distribution and physicochemical properties of the two flocculants were compared by Ferron time by time complexation colorimetry,FTIR,SEM and Zeta potential.It was found that the medium and high polymer content of E-PATC prepared by electrodialysis method was 3.89%higher than that of S-PATC prepared by slow dropping alkali method,and the Zeta potential was 8.9 mV higher,which indicated that the electric neutralization and sweeping capacity of E-PATC were better than that of S-PATC.Second,the flocculation effect of two kinds of flocculants on Jiazi Lake water and secondary effluent was compared.It was found that the organic removal rate of E-PATC was higher than that of S-PATC in both Jiazi Lake water and secondary effluent.Finally,the floc dynamics of E-PATC was studied.E-PATC had a fast growth rate,a large floc particle size,and was easy to settle.In summary,the flocculation effects of E-PATC and S-PATC are similar,but the floc produced by E-PATC flocculation has a large particle size,is not easily broken,and has better settling properties.关键词
聚合铝钛基絮凝剂/混凝/聚合/电化学/水处理Key words
polyaluminum titanium-based flocculant/coagulate/polymerization/electrochemistry/water treatment分类
化学化工引用本文复制引用
潘娜,田昌,怀兰坤,刘玉玉,张芬芬,高晓梅,刘伟,闫良国,赵艳侠..聚合铝钛基絮凝剂的合成与应用[J].化工学报,2024,75(3):1009-1018,10.基金项目
山东省高等学校"青创科技支持计划"项目(2021KJ043) （2021KJ043）
山东省泰山学者青年专家计划项目(tsqn202103080) （tsqn202103080）
国家自然科学基金项目(51978311,42377077) （51978311,42377077）
济南大学重大重点科技培育项目(XKY2205) （XKY2205）
