标题:
微生物在饱和多孔介质中的迁移Microbial Transport in Saturated Porous Media
作者:
袁瑞强, 郭威, 王仕琴, 王鹏
关键字:
微生物, 生物胶体, 迁移, 吸附解吸, 多孔介质, 地下水Micro-Organism, Bio-Colloid, Transport, Sorption-Desorption, Porous Media, Groundwater
期刊名称:
《Journal of Water Resources Research》, Vol.5 No.4, 2016-08-16
摘要:
微生物在多孔介质中的迁移是水文与水环境研究的热点问题。对该问题的深入探讨有助于遏制水传播疾病，提高受污染地下水微生物修复的效率。过去十五年来，对微生物在饱和多孔介质中迁移问题的研究获得很大进展。然而，传统的DLVO理论和胶体过滤理论解释微生物在多孔介质中的迁移过程时存在明显的不足。沥滤、异质性、优先流、微生物特征及生长衰亡过程等对生物胶体迁移存在显著的影响，其实验机理研究和模型模拟研究需要进一步深入。实验室的研究成果往往与野外条件下的不一致，这是加强野外研究的客观要求。野外实验不可控因素多，相对于实验室实验更加复杂。加强野外条件下的研究有助于深入理解生物胶体迁移的复杂规律，促进机理研究和模型模拟的发展。考虑多种机理的模型有复杂化的趋势，如何识别主要机理、简化模型、提高效率是模型研究要注意的问题。
Microbial transport in porous media is a hot issue in fields of hydrology and water environment. Re-searches on the issue are helpful to restrain water-borne diseases and to improve the efficiency of polluted groundwater recovery. Over the past 15 years, the understanding about microbial transport in a saturated porous media has been improved substantially. However, the DLVO theory and the colloid filtration theory cannot support a sufficient explanation in microbial transport. Straining, heterogeneity, pore scale force/ torque balance, microbial features, growth and death significantly affect the microbial transport of which mechanisms and modeling need to be enhanced in future studies. In addition, results from laboratorial studies are mostly different with field results, which highlights the necessity to do more field researches. In field experiments, there are many uncontrollable factors and complex situations compared with labora-torial experiments. More field experiments will offer valuable chances to get a thorough comprehension of microbial transport promoting development of transport mechanisms and models. New models tend to become more complicated when trying to integrate more mechanisms. Therefore, how to find the main mechanisms simplifying models and improving efficiency is also a key question.