Looks like a hose coming from outside... I'm guessing, the well... spliced into the line is a 4" or so plastic fitting with a dial on it gradated from 90deg "closed" to 0 deg. "open"... then the line goes to a tank that says "Well Mate water pressure system tank"... this tank has a cap on the top, with a small hose emanating from the cap and apparently going to an outside drain. from there I am pretty sure it goes to a pump, then the softener, then splits off to the hot water heater, or cold directly to the house.
Once the softener "service" people came while my wife was here... after disabling and draining the pump, they took the cap off the Well-mate tank and cleaned something inside it... the word "micronizer" appears on the bill. Clogged with iron I think.
I also had the hot water heater "service" people come and remove the anode from, and chlorinate, the hot water heater. But after a few weeks the sulfur smell is starting to come back. It has always been only in the hot water.
At any rate, is either the plastic inline dial thingy, or the well-mate thingy (or both I suppose) an "aerator"? I *never* smell any sulfur smell in that area of the basement. I have the dial thing set at 45 degrees to be safe, since I don't know whether "closed" for example is max aeration, or none, or some other thing altogether.
If part of this is an aerator, wouldn't it make more sense for it to be after the hot water, since that's where the smell is? And if the micronizer clogs with iron, shouldn't we have it after the softener?
Again, sorry for the non-technical nature of this. I am trying to learn what I can since the pump company and the water heater company only seem interested in pointing fingers at each other and requiring endless testing, at my expense of course.
TIA for any help.