Method for determining diffusion radius of in-situ injection and remediation of contaminated soil and groundwater

US10788408B2 · kind B2 · utility

Assignee

• BCEG ENVIRONMENT REMEDIATION CO., LTD · CN

Inventors

• Yuewei YANG · Beijing, CN
• Shupeng Li · Lo Wu, CN
• Yue Zhang · 红钢城街道, CN
• Xiaobin Zhang · Santa Clara, US
• Lili Guo · Beijing, CN
• Shuangchao Cui · Beijing, CN
• Xiaowei Song · Shanghai, CN
• Fan Chen · Xi'an, CN
• Pengcheng Yin · Beijing, CN
• Peng Liu · San Diego, US
• Yan Liu · Beijing, CN
• Qiang Niu · Beijing, CN

Key dates

• Filing date: May 16, 2017
• Grant date: Sep 29, 2020
• Expiry date: May 17, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2013/003
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for determining the diffusion radius of in-situ injection and remediation of contaminated soil and groundwater. According to the triangle method, the hole spacing is perpendicular to the groundwater flow direction, the row spacing is along the groundwater flow direction, and the flow diffusion in the groundwater during the effective time of the remediation agent reaction is considered. Under high pressure rotary injection, the remediation agent and a certain proportion of bromide ions are simultaneously injected into the aquifer as a tracer. The diffusion of the agent is determined by observing the phenomenon of slurry-returning and slurry-channeling of adjacent injection points. After the completion of the injection, the groundwater is quickly sampled in fixed depth, the tracer concentration is quickly detected on site, and the concentration of bromide ions in the groundwater is compared with the background value. Comprehensive determination determines the optimal diffusion radius.