有机污染土壤原位化学氧化药剂投加方式的综述

原位化学氧化技术是修复有机污染土壤最经济有效的技术之一。药剂的投加与分散技术是原位化学氧化修复技术的核心。药剂投加与分散方式的选择与污染场地的土壤渗透性、特征水平、污染深度、氧化剂性质、修复费用等相关。阐述了直压式注射法、注射井法、土壤置换法和高压-旋喷注射法等药剂投加与分散技术的适用性、控制参数及优缺点等,引用工程实例对药剂投加与分散技术在原位化学氧化修复过程中的应用情况进行了论证。

A Review of In-Situ Chemical Oxidation Injection Method for Organic Contaminated Soil

The in-situ chemical oxidation （ISCO） method is one of the most economical and effective technology for organic contaminated soil remediation,and the oxidant injection and dispersion technologies are the core of ISCO. The selection of an appropriate oxidant injection and dispersion mode is relevant to the hydrogeology characteristics of soil,the pollution scope and depth,the chemical properties of oxidants,the cost of remediation,and so on. The applicability,controlling parameters and the advantages and disadvantages of the injection and dispersion technologies are described,such as direct push injection technology,injection well technology,soil replacement technology and high pressure-rotating injection technology. The engineering cases are introduced to demonstrate the application of oxidant injection and dispersion technologies in soil remediation by ISCO method.