序批式生物反应器中自生动态膜的成分与结构分析

通过粒度分布仪、扫描电镜等对最佳工况条件下的序批式生物反应器中动态膜结构成分及过滤性能进行了测定分析，用能量色散X射线荧光法(EDX)分析了动态膜的元素组成，结果表明：动态膜中滤饼层质量为39.2g·m-2，其中胶体、挥发性悬浮颗粒物、无机物含量分别为5.7 g·m-2、 26.5g·m-2、 7.0 g·m-2；自生动态膜为多孔状结构，具有较高的孔隙率，可以清晰的观察到丝状菌夹杂在动态膜内，起到了骨架作用；动态膜内主要以70μm～130μm的颗粒为主；O、K、Na、Ca、P、S、Cl、Mg、Si等为动态膜成分的主要元素。

Dynamic membrane structure and composition in sequencing batch reactor

Particle size analyzer, scanning electron microscope were used to investigate the dynamic membrane composition and filtration performance under optimal operation parameters.Energy dispersion spectroscopy was used to determine the elemental composition of the dynamic membrane.The results indicated that the mass concentration of cake layer was 39.27 g·m^-2, with contents of colloid, volatile suspended solids and inorganic matter 5.75 g·m^-2, 26.5 g·m^-2 and 7.02 g·m^-2 respectively.Self-generated dynamic membrane mainly consisted of porous structure with high porosity.Filamentous bacteria which acted as matrix of dynamic membrane structure could be obviously observed.Most of the particle size range from 70μm to 130μm.O, K, Na, Ca, P, S, Cl, Mg, Si were the main elements in the dynamic membrane.