Pectic stabilizing nanoscale zero valent iron repair Groundwater Technology

The present invention relates to a stabilized pectin nanoscale zero valent iron groundwater repair technology, are environmental pollution control field groundwater remediation. The present invention is primarily to solve the dosing volume, poor fluidity, the suspension pH greater impact by simply adding presence of CMC as a dispersing agent. The present invention is pectin stabilized nanoscale zero valent iron groundwater repair process, comprising the steps of: (1) Preparation of pectin powder and mixed with the sodium carboxymethyl cellulose stabilizing agent; (2) preparing a stabilized suspension of nanoscale zero valent iron; (3) step (2) was obtained stabilized nanoscale zero valent iron suspension through the inlet tube into dosing wells; (4) until step (3) the completion of injection, the dosage of the well is placed containing stabilized nano ZVI packed column, which contains the stabilizing nanoscale zero valent iron in the packed column in long-term fixed dosing wells, each of the radius of influence of the packed column stabilized nanoscale zero valent iron is 2.0 ~ 3.0m, and the replacement period of 30 to 50 days.