Where to put the filter?

I have a Cuno whole house water filter with a chlorination system that I am going to install with my Kinetico water softener. Could some one please tell me the proper placement of the filter, either before the softener or after the softener? Thanks.

 

If you are adding chlorine, and then taking it out again, put the dechlorinator before the water softener to reduce oxidative attrition loss of the resin.

Be sure that the dechlorinator is sized to allow enough flow to the softener for proper regeneration.

 

It always goes before the softener. You prefer to not expose the softener resin to chlorine because it will ultimately damage it. HOWEVER be sure that the filter will allow enough flow through it so it does not negatively impact the flow rates requeired for the water softener when it regenerates.:mask:

 

Could you explain a little more about the carbon filter you plan to use?

Size, type, and location, again. Also, do you know the chlorine count (ppm) going into the filter? What is the reason you are adding a chlorination system? What elements are you trying to combat? How is chlorine 'injected' into the water? Do you have a retention tank? An atomizer/mixer tube? Is it household bleach, swimming pool chlorine, etc.?

If I recall, CUNO makes a BB 10" x 4.5" carbon block and GAC types. Would one of those be your selection?

Let's look at this a little more in depth. please.

Andy Christensen, CWS-II

 

I read that putting it after the softener would be beneficial as you would want chlorine in the softener to disinfect...but I heard just as many arguments the other way, to put it before, to preserve your resin. Im sure it has a lot to do with 'what' it is your trying to accomplish, where your getting your water, how chlorinated it is, etc.

What about a KDF media on the softener, then a GAC filter after the softener (best of both worlds or overkill?)

 

Both schools of thought have merit, but I'd rather dechlorinate before the softener to protect the resin and control valve.

I like disinfecting the softener at least once a week with a disinfectant like pur-gard, sodium metabisulfite, or even peracetic acid which can be injected into the system during regeneration using a solenoid or drip-fed into the brine tank with a wick feeder.

KDF is a good dechlorinator, just make sure your system is designed by someone who knows what they're doing.

And of course, let's get more data, as AndyC suggested.

 

Hey Greg,
I really like the idea of drip feeing or using a solenoid to move something like pur-gard into my brine tank, but I'm having read difficulty finding a product to do this. I understand you may not wish to provide a specific "plug", but could you give me/us something to Google such that I/we might be able to track down a solution. Thanks so much!