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To implement this technology you will need to make some estimates of the volume of injected fluid and the amount of sodium dithionite needed. You will need to include the results of your calculations as part of the discussion of remediation design in the report you will create at the end of this project.
Part 1
What is the volume of injected fluid needed to create a treatment zone around each well with a radius of 20 feet. The volume of injected fluid needed is the amount required to displace the native ground water from the aquifer pores in a treatment zone that is in the shape of a cyclinder 20 feet in radius and with a height equal to the thickness of the aquifer around each injection well.
Use the data in the Drillers' Logs of Site Test Holes under the Resources tab to estimate the aquifer thickness (the distance between bedrock surface and the water table). Estimate the porosity from the data collected from the monitoring wells you installed to locate the plume.
Part 2
It has been determined that the sodium dithionite concentration in the injected fluid should be 13.6 grams/Liter. Based on the calculated volume of injected fluid, what is the mass of sodium dithionite, in kilograms, needed to produce the desired concentration?
Part 3
You will inject the resulting dilute solution into the aquifer at a rate of approximately 50 gallons per minute. How long will it take to inject all of the fluid into the aquifer?
