响应面法优化高浓度石油烃污染土壤降解及其碳排放研究  

Response Surface Optimization and Carbon Emission Analysis of High-Concentration Petroleum Hydrocarbon Contaminated Soil Degradation

作　　者：商卫纯 毕宁 梅皓天 席杰君 杨强 Shang Weichun;Bi Ning;Mei Haotian;Xi Jiejun;Yang Qiang(Ningbo Research Institute of Ecological and Environmental Sciences,Ningbo 315012,China)

机构地区：[1]宁波市生态环境科学研究院,浙江宁波315012

出　　处：《环境科学与管理》2024年第12期66-71,共6页Environmental Science and Management

基　　金：宁波市公益类科技计划重点项目(2021S021)。

摘　　要：文章以高浓度石油烃(C_(10)~C_(40))污染场地土壤为研究对象,研究了过硫酸钠(PS)浓度、pH值、Fe^(0)投入量和活化温度对反应体系的影响,同时基于这些因素设计了响应面试验,以石油烃的降解率为响应值进行了回归拟合分析。结果显示,在PS浓度128 g/L、pH6.2、Fe^(0)摩尔比(PS:Fe^(0)摩尔比)6.2:1、温度54℃的反应条件下,该污染土壤的有效降解率近80%。将优化后的配方结合修复工程经验,经碳排放核算,碳排放强度的关键比对环节——材料生产环节中的碳排放强度下降了近70%。此研究为同类污染场地的化学氧化修复提供了理论依据和参考价值。This paper focuses on high-concentration petroleum hydrocarbon-contaminated soil in field sites.The effects of sodium persulfate(PS)concentration,pH,Fe^(0) and activation temperatureinput on the reaction system were investigated.Additionally,a response surface experiment was designed based on these factors,and a regression analysis was conducted using the degradation rate of petroleum hydrocarbons as the response variable.The results showed that under the reaction conditions of PS concentration 128g/L,pH 6.2,Fe^(0) molar ratio of 6.2:1 andtemperature 54℃,the effective degradation rate of high-concentration petroleum hydrocarbons(C_(10)~C_(40))in the contaminated soil was nearly 80%.Combining the optimized formulation with repair engineering experience,and based on carbon emission calculations,the carbon emission intensity in the material productionstage has decreased by nearly 70%.This study provides a theoretical basis and reference value for chemical oxidation remediation of similar contaminated sites.

关 键 词：过硫酸盐 响应面分析 污染土壤修复 石油烃 碳足迹 

分 类 号：X53[环境科学与工程—环境工程]