Hi. First of all, sorry if this is not the right place to post this, but from all the options this seems the best. I'm a senior in Civil Engineering, and I'm working on my final project, which is a groundwater treatment station. Part of the process is lime softening, which results in a pH increase of up to 11. To reduce the pH to acceptable levels for distribution and consumption, a recarbonation process will be carried out, where gaseous CO2 will be injected into the water. What I cannot find out is the CO2 dosage needed to carry out this task. How can I estimate it? What other variables do I need to know? If someone could help me or guide me where I can get information on this topic I would be very grateful.