【摘要】 垃圾渗滤液输运管道作为其输送系统的核心设施，普遍面临内壁结垢问题。微生物在结垢过程中扮演关键角色，尤其对管壁生物膜的形成与演化具有显著影响。为深入解析在垃圾渗滤液这一特定复杂介质中，管材表面物化特性对生物结垢的作用机制，选取HDPE、PVC、PP、ABS 4种高分子管材，实施了渗滤液静态浸泡结垢试验;依托XDLVO理论(扩展的Derjaguin-Landau-Verway-Overbeek)框架与冗余分析(RDA)方法，定量探究了管材表面理化参数在生物结垢不同阶段的影响权重与作用机制。结果显示:在试验的渗滤液体系中，结垢初期(1 d),Zeta电位是微生物初始粘附的主要影响因素(贡献率60.2%)，与吸附菌量呈负相关;浸泡14 d后，表面粗糙度作用显著上升(贡献率46.9%)，与结垢量呈正相关。上述成果为垃圾渗滤液输送系统基于表面性质优化选材提供了针对性的科学参考，同时对提升渗滤液输送系统的效能与持久性亦具有一定的工程意义。更多还原

【Abstract】 The transport pipelines for waste leachate,as the core facilities of the transportation system,commonlyare challenged by inner wall scaling.Microorganisms play a crucial role in the scaling process,especially having a significant impact on the formation and evolution of biofilms on the pipe walls.To deeply analyse the mechanism of the influence of the physical and chemical properties of the pipe surface on bio-scaling in the specific complex medium of waste leachate,four types of high molecular materials were selected as the study objects: HDPE, PVC, PP, and ABS, with static immersion scaling tests of the leachate conducted.Based on the XDLVO theory(extended Derjaguin-Landau-Verway-Overbeek) framework and redundancy analysis(RDA) method,the influence weights and mechanisms of the physical and chemical parameters on the surface of the pipe materials at different stages of bio-scaling were quantitatively explored.The results showed that in the leachate system of this test,at the initial stage of scaling(1 day),the Zeta potential was the main influencing factor for the initial adhesion of microorganisms(contribution rate 60.2%),and it was negatively correlated with the amount of adsorbed bacteria; after 14 days of immersion,the effect of surface roughness significantly increased(contribution rate 46.9%), and it was positively correlated with the amount of scaling.These results provide targeted scientific references for optimizing material selection for the waste leachate transportation system based on surface properties,and also have specific engineeringsignificance for improving the efficiency and durability of the leachate transportation system.更多还原