摘要
本文首先介绍了垃圾填埋场对其附近地下水体的潜在污染危害 ,着重介绍了为防止地下水体污染填埋场而采用的防渗措施 ,包括封场后的顶部覆盖层、中间夹层、底部集排系统以及底层和四周的衬层系统。然后介绍了由于防渗措施局部失效或其他原因 (如破损、腐蚀等 )引起渗滤液污染地下水以后可采用的防护方法 (物理和生化技术 ) ,主要有隔离措施、地下曝气、反应墙或反应井、人工补给或抽水、水力截获、原位生物修复技术。最后简要介绍了对填埋场污染地下水这一问题的研究现状 。
The present paper is engaged in the study of the potentially detrimental effect of the landfill on the nearby groundwater with its focus put on the anti seeping leachate measures from the landfill. Such measures may include: the overlay layer in the upper side of the landfill trashes after its being buried; the interlayer between the waste layers of the landfill trashes; the collecting and discharging system of the leachate in the bottom of the landfill; the under layer and surrounding layer lining between the landfill and the substratum in the base of the landfill. All the above measures can play significant roles in reducing and preventing leachate leaking from the landfill. In addition, the paper also bring about proposals on the available methods for groundwater pollution control, which is contaminated by the leachate due to the failure of the anti seeping measures or some other unpredictable reasons, such as the breach or erosion of the liner and the disassembly of the composite liner, etc. The available pollution control methods to prevent groundwater from being contaminated may include physical methods and biochemical methods. The former helps to insulate the clean water from pollutants while the latter helps to purify the contaminated ground water through aeration. The reacted walls or wells with reactant or adsorbent in them can be used to ward off the contamination. It is also possible to pump the contaminated water out or supply clean water to the contaminant groundwater so as to dilute the contaminants, which can also be removed by distillating the matter lighter than water or by forming hydraulic heads in the pathway. Another method which has been developed recently is known as the in site bioremediation method, which is a promising way to restore the purity of the contaminated ground water. In the end, the paper introduces the status quo of the research work in this field as well as the prospect of the potential applications of such techniques.
出处
《安全与环境学报》
CAS
CSCD
2002年第4期18-22,共5页
Journal of Safety and Environment
