为研究稀土盐LaCl3改性对沸石物化性质和脱氮除磷抗菌性能的影响,对天然沸石、改性沸石(NaCl-焙烧改性,载Ag)和镧负载改性沸石进行脱氮除磷抗菌的应用试验,结果表明,镧负载改性沸石具备了同步脱氮除磷抗菌性能,其脱氮和抗菌能力分别为90.98％和96.21％,除磷能力提高到92.45％.通过扫描电镜(SEM)和能谱图分析(EDS)、红外光谱(IR)、X射线衍射分析(XRD)、比表面积与孔径分析、离子交换容量(CEC)、Zeta电位等表征手段对镧负载前后各沸石分析发现,镧负载改性沸石的表面覆盖了一层均匀的氧化镧颗粒,沸石表面的La含量和Zeta电位明显增加.负载镧后的改性沸石的孔结构、孔容积、比表面积、平均孔径和阳离子交换容量等较改性沸石都有一定的减少,但是与天然沸石相比还是有很大的提高,从而在保证改性沸石脱氮抗菌能力的基础上,除磷能力大幅度提高.
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