工业场地碱污染土壤修复工程案例研究

文章主要介绍了江苏某化工场区域内碱污染土壤酸碱中和修复工程。根据场地特点，针对性的将污染土壤分为重污染土壤、中污染土壤和轻污染土壤来修复。通过现场中试，确定了3种污染土壤盐酸掺加比和浓度；其中重污染土壤掺加量为25mol／m^3，中污染土壤掺加量为2．5mol／m^3，轻污染土壤掺加量为0．25mol／m^3。根据中试结果，对污染土壤进行工程修复，修复过程中对土壤进行实时检测。工程施工结束后，由第三方机构对修复效果进行评估；评估结果为场地碱污染土壤pH值总体达到修复目标（pH为7～9），修复达标。

Remediation Case of Alkali Contaminated Soil in a Industrial Site

This paper studied a chemical site in Jiangsu Province within the alkali contaminated soil remediation project. Based on site characteristics, the target contaminated soil is divided into heavy contaminated soil, contaminated soil and light pol- luted soil. The hydrochloric acid dosages for the three kinds of contaminated soils were determined by the field pilot test. The dosage for heavy polluted soil is 25 mol/m3, 2. 5 mol/m3 for contaminated soil and 0. 25 mol/m3 for light polluted soil. The polluted soil was repaired according to the results of the pilot test with real - time detection of the remediation process. After the construction, a third - party agency evaluated the remediation effect. The pH value of alkali pollution soil recorded 6 - 9, reaching the re- mediation standards.