摘要
综述了地下含水层系统中微生物作用。引用研究实例论述了微生物作用不但可以改变地下水化学组分,而且还可以改变含水层的水力性质。微生物作用对地下水系统的影响程度主要受微生物代谢速度、水文地质条件、含水层岩性等多种因素控制。地下水系统中电子供体与电子受体间的丰度关系是影响微生物代谢速度的主要因素。在未污染的含水层中,电子供体的可用性限制了微生物的新陈代谢,而在人类活动污染的含水层中,微生物的新陈代谢受电子受体的可用性的限制。利用微生物作用可以降解地下水系统中氯代化溶剂、烃类、硝酸盐、有毒金属等多种化学污染物。并对今后的发展方向进行了探讨。
In this paper,microbial processes in groundwater were reviewed in detail. This paper described that microbial processes not only alter the geochemistry of groundwater but also alter the hydraulic properties of the aquifers themselves, the paper use. The extents of microbial processes affect the properties of aquifers in both chemistry and physical, depending upon rates of microbial metabolism, hydrologic setting, and aquifer mineralogy. The abundant of potential electron aeceptors relative to available electron donors is the mostly influence factor of the rate of microbial metabolism. In many pristine aquifers, where microbial metabolism is limited by the availability of electron donors. In aquifers contaminated by anthropogenic contaminants,microbial metabolism is limited by the availability of electron acceptors. Many chemical contaminants,including chlorinated solvents, BTXE, nitrate, toxic metal in groundwater systems can be biodegraded. Moreover, its development trend in the future was discussed in this paper.
出处
《南水北调与水利科技》
CAS
CSCD
2007年第5期60-63,共4页
South-to-North Water Transfers and Water Science & Technology
基金
国家自然科学基金资助项目(40472154)
关键词
微生物作用
地球化学
水力性质
生物修复
microbial processes
geochemical
hydraulic properties
bio-remediation
