CAJ | 학술논문

氯代有机物因其高毒性、高富集性、高环境残留的特点及其“致癌、致畸、致突变”效应被美国环保局(EPA)列为优先控制污染物。氯代有机物污染场地的传统物理、化学、生物修复方式修复费用相对较高，对污染场地周边环境影响较大。监控自然衰减（MNA）是一种国际上应用较广的污染场地修复和管理技术，近年来在我国逐渐得到关注，其利用污染物自身的自然衰减作用达到修复目标，从而降低修复成本，规避工程风险。本文重点介绍监控自然衰减技术，并结合氯代有机物自然衰减过程中的生物降解作用、降解途径与机理、主要降解菌和酶等要素对氯代有机物污染场地实施监控自然衰减修复的可行性进行初步探究。
록대유궤물인기고독성、고부집성、고배경잔류적특점급기“치암、치기、치돌변”효응피미국배보국(EPA)렬위우선공제오염물。록대유궤물오염장지적전통물리、화학、생물수복방식수복비용상대교고，대오염장지주변배경영향교대。감공자연쇠감（MNA）시일충국제상응용교엄적오염장지수복화관리기술，근년래재아국축점득도관주，기이용오염물자신적자연쇠감작용체도수복목표，종이강저수복성본，규피공정풍험。본문중점개소감공자연쇠감기술，병결합록대유궤물자연쇠감과정중적생물강해작용、강해도경여궤리、주요강해균화매등요소대록대유궤물오염장지실시감공자연쇠감수복적가행성진행초보탐구。
Due to the high toxicity, potential of biological accumulation, recalcitrance to degradation and the known carcinogenic/teratogenic/mutagenic effects, the chlorinated organic compounds have been listed as priority controlled pollutants by the United States Environmental Protection Agency (EPA). In view of chlorinated pollutants contaminated sites, the traditional physical, chemical and biological remediation methods often impose relatively high costs and considerable impacts on the surrounding environment. The monitored natural attenuation (MNA) is an effective technology for site remediation and management and has been widely used internationally, which gradually attracts more and more attentions in China in recent years. It relies on the intrinsic potential of the pollutants to degrade naturally to meet the remediation requirements, and thereby would reduce treatment costs and lower on-site project risks. This paper focuses on the introduction of MNA technology, as well as the characteristics of chlorinated organic compounds such as the biodegradation pathways and mechanisms during the process of natural attenuation, the main degradation microbial communities and the key biodegradation enzymes. A preliminary discussion on the suitability of implementing MNA remediation on chlorinated organic compounds contaminated sites is provided.