化工污染场地土壤污染特征及修复方案分析

Analysis of Soil Pollution Characteristics and Remediation Schemes in Chemical Contaminated Sites

随着城市的高速发展,大量化工厂搬迁后,原厂区的土壤污染给土壤环境带来威胁。与水污染等其他问题相比,土壤污染由于具有滞后性、隐蔽性和累积性等特点,治理难度大,需要在对污染场地各个污染区域土壤污染特征具体情况分析基础上,针对性制定出绿色可持续的综合修复方案。文章重点结合具体的生产农药的精细化工厂场土壤污染特征,以目前最新研究成果及国内外相关工程实例为参考,在加强二次污染防控的前提下,选用“开挖清理+化学淋洗+生物稳定性修复”等多种联合修复技术方案,实现对污染场地的科学修复和精准化管控。

With the rapid development of cities,some chemical plants had to be relocated.The soil pollution of original factory site pose a serious threat to the soil environment.Compared with other problems such as water pollution,soil pollution has the characteristics of lag,concealment and accumulation,which increases the difficulty of treatment.It is necessary to formulate a green and sustainable comprehensive remediation scheme based on the analysis of the specific situation of soil pollution characteristics in each polluted area of the polluted site.The paper focuses on the specific soil pollution characteristics of fine chemical plants producing pesticides,taking the latest research results and relevant engineering examples at home and abroad as reference,and on the premise of strengthening secondary pollution prevention and control,a variety of joint remediation technical schemes such as“excavation cleaning+chemical leaching+biological stability remediation”are selected to realize scientific remediation and precise control of contaminated sites.