Abstract:In order to realize the formation rules of in-situ reaction zone (IRZ) of sucrose-modified nanoscale zero valent iron (SM-NZVI) in underground aquifer, simulated IRZ was set up in two-dimensional slot, and the influence of particle size of silica sand, groundwater velocity, slurry concentration, injection volume and injection approach on the remediation area of IRZ were invesgated. The results showed that the reaction zone was wider as the medium size and groundwater velocity increased, and the zone in coarse sand was 3times as wide as that in fine sand; when the groundwater velocity increased from 0.1m/d to 1.0m/d, the width expanded by 14.9% and 106.4%, respectively. Injecting slurry into underground gradually by several times could let the initial zone width increase by 19.8%. Moreover, lower slurry concentration contributed to the expansion of the zone in both directions of groundwater flow and vertical aquifer.
李卉, 赵勇胜, 韩占涛. 改性纳米铁原位反应带修复范围影响因素研究[J]. 中国环境科学, 2015, 35(4): 1135-1141.
LI Hui, ZHAO Yong-Sheng, HAN Zhan-Tao. Study on influence factors of remediation area of in-situ reaction zone injected with modified nanoiron. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(4): 1135-1141.