Sulphur smell time to change filter?

[Leaway]

Currently got a borehole set up on site with the following filters but the hot water has recently started to smell of sulphur again, is it time to change a filter or the UV.

it was fine for a while I even manage to get the cloudiness out of the cold water 

Water has been tested by the local council

any help or suggestions appreciated

Set up 

• Borehole
• 100litre pressure tank
• 1 micron filter - woven
• carbon filter
• aerator
• uv filter
• blue mdpe pipe (approx 25 metres)
• feed in to caravan on site reduced down to 15mm pipe
• through caravan boiler

 

 

Water test Ceredigion council.pdf

[Jeremy Harris]

IIRC, the carbon block filter fixed the problem originally, didn't it?

They have a finite capacity for absorbing H₂S, so in all probability the cartridge needs replacing.

As it's not that long since the filter was fitted, I suggest that for your permanent supply you look at fitting a proper H₂S oxidation system.  The system we have works OK, and uses an air space above a backwashable sand and oxidising catalyst to remove both the H₂S and ferrous iron.  It should work OK to just remove H₂S, but if in doubt give the UK supplier (GAPS Water) a call and ask, I've found that they are very helpful.  The kit is American, purely because a very large number of homes in the US use private wells, and a lot of them (particularly in places like Florida) have high levels of H₂S in the water.

The filter we have is on the large side for our requirements, and knowing what I know now about the needed backwash flow rate to clean the filter I should have opted for the next size down.  Ours is the 12" x 52" Aquamandix iron and H₂S unit, with the air draw kit (this one: http://www.gapswater.co.uk/acatalog/Aquamandix---sand-mix-Simplex-system-with-Autotrol-Logix-263-740-digital-TIME-controller-2968.html#SID=241 ), but for just H₂S removal they offer a similar system, here: http://www.gapswater.co.uk/acatalog/copy_of_Hydrogen_Sulphide_Filters.html that uses a different media and is focussed more on removing H₂S rather than iron and manganese.