东南大学学报（英文版）2021，Vol.37Issue(4)：394-400,7.DOI:10.3969/j.issn.1003-7985.2021.04.008
深层石油类污染土壤注射原位修复
In-situ remediation of deep petroleum-contaminated soil injection
摘要
Abstract
A computational fluid dynamics (CFD) numerical simulation and field experiment were used to investigate optimal operating parameters of high-pressure jet grouting equipment and clarify the boundary law of the injection area in the remediation process.The response surface optimization design results show that the optimal injection pressure is 30 MPa,rotation speed is 23 r/min,commission speed is 30 cm/min,and the optimal injection diameter is 147.3 cm.Based on the CFD numerical simulation,the ratio of the injection core,turbulent zone,and seepage zone is approximately 1∶4∶2.The distribution law of jet core,turbulence zone and seepage zone at different cross-sections under 30 MPa operating conditions is as follows:The jet core radius is approximately 100 mm,the turbulence zone is mainly distributed at 100 to 500 mm,the seepage zone is mainly distributed at 500 to 700 mm,the seepage zone could be completed within 2 h,and the proportion of the three boundary zones in the injection zone is similar to that of the numerical simulation.This study provides theoretical parameters and practical reference for the remediation of deep pollution via in-situ chemical oxidation in the Loess Plateau soil environment.关键词
原位化学氧化/高压旋喷/总石油烃/污染土壤修复/CFD数值模拟Key words
in-situ chemical oxidation/high-pressure jet/total petroleum hydrocarbons/remediation of contaminated soil/computational fluid dynamics (CFD) numerical simulation分类
资源环境引用本文复制引用
王亚军,董万涛,陈甜婧,李丽,张玉蓉,许生辉,傅大放..深层石油类污染土壤注射原位修复[J].东南大学学报（英文版）,2021,37(4):394-400,7.基金项目
The National Natural Science Foundation of China(No.41967043,52160003),the Natural Science Foundation of Gansu Province (No.20JR5RA461),the Key Project of China Railway South-west Research Institute Co.,Ltd.(No.2018-KJ003-Z003-XB),the In-dustrial Support Program of the Higher Education of Gansu Province(No.2020C-40). （No.41967043,52160003）
