The best recommendations are ...

The best recommendations are for either ion exchange or ultrafiltration (reverse osmosis).  The reverse osmosis would be more problematic in my view as it requires higher continuous pressures.  It would be considered if the availability or consumption of the ion exchange materials (NOT the same as those in water-softening systems!!) made it more expensive than the power/pump costs.  In either case I would not expect the waste stream sulfate concentrations to adversely affect the existing levels if they are already high in your well water.  To remove it would require reaction, most likely with calcium to produce gypsum, but short of commercial volumes that might not be an improvement.

BOILING is also energy intensive, but would also eliminate any sulfur gases (rotten egg smell) as well as the sulfates.  A SOLAR STILL could be used in some locations to get around that problem, but I'm not sure what the flow rates would be.