I have a huge three cartridge filtration system (Manor) under the house. (3' encapsulated crawlspace) I replaced the "citrus softener" filter cartridge with a second carbon filter but no luck
The filters shown are not huge, for a well with issues they are tiny. As to why the odor disappears with the filters remove, the bacteria are being caught by the filter element and continue to grow. To stop this you need a large iron pre-filter, then a large capacity UV lamp to kill the iron bacteria, then another smaller micron filer to catch the remaining dead bacteria , then a large charcoal filter as in large tanks; Why use an iron pre-filter before the UV lamps?, because large iron particles will have bacteria within or shield bacteria from the UV light, also large particles shield harmful bacteria.
Personally I would not want to pay for the system for the community as it would be very costly, along with ridiculous maintenance cost. DIY will need large filters even for one household. damn expensive but your not going to get off light if you can not live with the odor.
Pe-fiilter filter for iron......, this will provide filtering for a year without filter cleaning.
Aeration system.....
A limited aeration unit....
Aer-Max Aeration systems for Iron & Hydrogen Sulfide Removal
www.purewaterproducts.com
This is a very good but very expensive aeration unit......
professionalwatersystems.com
after- filter......with a low micron filter
If the well casing is plastic you could get away with a "down the well" aeration system. If steel casing, the added oxygen will destroy your casing via rust.
Activated charcoal filters (2)........... to remove any remaining gases
www.purewaterproducts.com