Assume the anion exchange process is used to remove nitrate from a water with an ionic c...

Assume the anion exchange process is used to remove nitrate from a water with an ionic character as given in Problem 7-69. What would be a major problem of this treatment process?

Problem 7-69:

A groundwater supply has the following analysis:

Calculate the quantities of lime and soda as for excess lime softening and the carbon dioxide reacted for neutralization by two-stage recarbonation. Assume the practical limits of hardness removal for calcium to be 30 mg/l and magnesium to be 10 mg/l, and three quarters of the final alkalinity is converted to bicarbonate. Sketch the bar graphs for the raw and finished waters.