We got both kinetico drinking and soft water installed last year and have been enjoying it for 9...
The sulphur removal system uses a galvanized tank (42gallon provided). The water is fed in the top and discharged out the bottom. As the water is fed in the top from your existing pump, an air pump that we provide injects air into the water stream just before the tank and helps keep a head of air in the top of the tank. This is where the sulphur gas* is let out of the water. It stays in the air pocket in top of the tank until it gets to a level of about 1/3 of the way down where an air release valve (provided) lets the sulphur gas and some air out. There are other gadgets like check valves, plastic tubing, a brass check valve, mounting bracket etc. that come with the kit. The really great thing about our system is; it is all done under pressure. No open vessels, no chlorine needed, no charcoal filter needed.
The rotten egg odor that you smell in your water is a gas. This gas is only released when it meets air. That is why it is strong when it first comes out of your faucet. Our system gets rid of the gas in the tank before it gets to the house.