Pre filters before Di only

[francie]

This might sound stupid but does anyone use prefilters before Di only? 

 

[francie]

This might sound stupid but does anyone use prefilters before Di only? 

An would it be easier on the resin? 

 

[Part Timer]

Ì suppose a sediment filter might help but this is @spruce or @doug atkinson territory 

 

[francie]

Ì suppose a sediment filter might help but this is @spruce or @doug atkinson territory 

Thank you @Part Timer be interesting to see if there's any difference. 

 

[Part Timer]

Thank you @Part Timer be interesting to see if there's any difference. 

If there is it will be fairly minimal as usually the dissolved solids are to small. It is the sediment particles it might help with

 

[spruce]

Ì suppose a sediment filter might help but this is @spruce or @doug atkinson territory 

?

I was thinking its @doug atkinson's territory.

I would go with you on the sediment filter but I'm in 2 minds regarding the carbon block tbh. When I first saw the post I decided to see what others thought. ?

This question has been asked before but I don't think we got a definitive answer. Removing traces of chlorine will help the resin but how much value derived is the question.

Does a dash of chlorine increase pure water's tds?

 

[Pjj]

Don’t  know the technical answer but why would you want to do that ?? Why not put the water through the pre filter first doesn't make any sense ti do it any other way to me .

 

[doug atkinson]

Chlorine can damage resin beads but that tends to be over a long period. Notably some Softening resins their life will be shortened due to prolonged Chlorine attack.

Mixed Bed resin is basically doing the same job of the filters and I asked this question to an engineer and he advised it would make very little difference to the life of resin.

Notably one element in water can reduce the life of resin but cannot be measured only in a lab. Carbon Dioxide reduces the life of resin and is often found in the summer time. The only way to remove this is to oxygenate the water prior to going into the resin.

 

[francie]

Chlorine can damage resin beads but that tends to be over a long period. Notably some Softening resins their life will be shortened due to prolonged Chlorine attack.

Mixed Bed resin is basically doing the same job of the filters and I asked this question to an engineer and he advised it would make very little difference to the life of resin.

Notably one element in water can reduce the life of resin but cannot be measured only in a lab. Carbon Dioxide reduces the life of resin and is often found in the summer time. The only way to remove this is to oxygenate the water prior to going into the resin.

Thank you @doug atkinson for your wise words. 

 

[Baldmonkey]

Surely the logical answer would be if you have space for Prefilter before your resin then you must have space for an r/o so why not use one? 

 

[francie]

Surely the logical answer would be if you have space for Prefilter before your resin then you must have space for an r/o so why not use one? 

I do have a 350god ro bud, but it takes around 24hours to fill, my tap ppm is normally 160, but it's dropped to just under 100, I'd like to try Di only when it's under 100

 

[Iron Giant]

I do have a 350god ro bud, but it takes around 24hours to fill, my tap ppm is normally 160, but it's dropped to just under 100, I'd like to try Di only when it's under 100

Pointless going the DI route with a tap tds of around 100 as if it spikes also then it will eat your resin, do you not have a booster pump for your R/O if not get one this will increase the pure production, my tap pressure fluctuates throughout the day so a booster is ideal for me I have a tap tds of around 70ppm again that fluctuates due to ongoing works, but with a 450gpd ro and a booster pump it currently  produces 350ltrs of pure in around 8 hours 

 

[Baldmonkey]

I do have a 350god ro bud, but it takes around 24hours to fill, my tap ppm is normally 160, but it's dropped to just under 100, I'd like to try Di only when it's under 100

Triple your Ro membrane and you will see a massive improvement

 

[francie]

Triple your Ro membrane and you will see a massive improvement

What do you you mean, get three new higher gpd membranes @Baldmonkey

I have these 3 100 gpd membranes since I started nearly three years ago still going great, I only produce  300liters a week. 

 

[francie]

Pointless going the DI route with a tap tds of around 100 as if it spikes also then it will eat your resin, do you not have a booster pump for your R/O if not get one this will increase the pure production, my tap pressure fluctuates throughout the day so a booster is ideal for me I have a tap tds of around 70ppm again that fluctuates due to ongoing works, but with a 450gpd ro and a booster pump it currently  produces 350ltrs of pure in around 8 hours 

I have no booster pump @Iron Giant, I use my garden tap outside my kitchen window, we're would be best to put the pump? 

 

[Baldmonkey]

What do you you mean, get three new higher gpd membranes @Baldmonkey

I have these 3 100 gpd membranes since I started nearly three years ago still going great, I only produce  300liters a week. 

Check this video out

 

[francie]

Check this video out

Thank you @Baldmonkey I will give it a look now ta

 

[francie]

Thank you @Baldmonkey I will give it a look now ta

Great vid @Baldmonkey great setup.

So il just buy 3 450gpd membranes an replace the older ones? 

Great vid @Baldmonkey great setup.

So il just buy 3 450gpd membranes an replace the older ones? 

Can you get them membranes in ten inch mate? 

 

[Baldmonkey]

Great vid @Baldmonkey great setup.

So il just buy 3 450gpd membranes an replace the older ones? 

Can you get them membranes in ten inch mate? 

You could but the ones I use are 3013 (13inch long) 

 

[francie]

You could but the ones I use are 3013 (13inch long) 

Just checked there @Baldmonkey I can get 3 150 gpd membranes 40quid each, so that's me upto 450, an maybe a pump thanks

 

[Iron Giant]

I have no booster pump @Iron Giant, I use my garden tap outside my kitchen window, we're would be best to put the pump? 

A booster pump needs fitting after the pre-filters and before the first membrane, you may need some extra JG tubing to fit the pump as below.