垃圾填埋场渗滤液特性及处理技术

A Critical Review Focusing on Landfill Leachate for its Characteristics and Treatment

渗滤液在卫生填埋过程中已成为严重问题之一,在其排入环境之前需要采取适当的措施加以处理。一般而言,应根据渗滤液的典型特性,如化学需氧量(COD)、生化需氧量(BOD)/COD比值以及填埋年龄等,选择适当的处理技术。此外,在处理过程中还应考虑通过快速、敏感和经济高效的生物测定方法评估渗滤液的毒性。本研究旨在综述有关填埋技术和渗滤液处理方法的研究。研究发现,单一的生物处理或物理化学处理无法满足严格的排放标准,而生物与物理化学处理相结合可以实现COD和氨氮的令人满意的去除效率。本文可以全面了解填埋技术、渗滤液特性以及渗滤液处理方法。

Leachate has become one of the serious problems during the process of sanitary landfilling.Appropriate measures need to be taken before it poured into the environment.Generally speaking,suitable treatment technologies should be selected according to the typical characteristics of leachate such as COD,BOD/COD ratio,and landfill age need to be considered.In addition,the toxicity of leachate by rapid,sensitive,and cost-effective bioassays should be also taken into account during the process of the treatment.The study aimed to review studies on landfill technology and leachate treatment methods.It is found that individual biological or physical-chemical treatment is unable to meet strict effluent guidelines,whereas a combination of biological and physical-chemical treatments can achieve satisfactory removal efficiencies of both COD and ammonia nitrogen.The paper could comprehensively understand the technology of landfills and the characteristics of leachate as well as the methods of leachate treatment.