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Re: What's 'R/O' stand for?
There is a current article in Cichlid News magazine (Oct. '99 issue) about water
treatment with Peat. It is a natural ion-exchange medium. Not that R/O is a ion
medium.However it does reduce the salts, softens, and lowers the pH of the water.
to mention that it lowers total dissolved solids which reduces the hardness of
In short it is much cheaper than buying a R/O unit, plus you have to replace the
membranes, and most killie people have peat. Bob
MarcAPI at aol_com wrote:
> When you set up an RO system, it is recommended that you pump softened water
> in rather than hard water. Apparently the sodium is much less damaging to
> the membrane than calcium. The water softener prolongs the life of the
> membrane. Therefore your waste water would not need to go back to the
> softener, but I guess it would not hurt either. Unfortunately, all
> contaminants in the water are more concentrated in the waste water, but that
> would be cut by the original water supply in this scenario.
> My question is how to hook up the waste line. Wouldn't this connection
> create a backpressure on the RO waste line? What would that do to the output
> and production rate?
> Final note. I used to use an RO rated for 50 gallons per day (gpd). I was
> lucky to get 30 gallons using softened, cold well water that was warmed up to
> 70-75 degrees F prior to reaching the RO unit. If you really NEED an RO, you
> will frequently get less than the rating says because of the extreme hardness
> that you are fighting.
> In a message dated 12/6/99 3:31:50 PM Eastern Standard Time,
> Owner-KillieTalk at AKA_Org writes:
> << Date: Mon, 06 Dec 1999 14:00:00 -0600
> From: "William Vannerson" <William_Vannerson at ama-assn_org>
> Subject: Re: Water filtration
> I was briefly describing this thread to friend of mine on the train when he
> " "Reverse Osmosis," I replied.
> I quickly explained the process as best I knew it, which is minimal at best
> because I do not have an R/O unit and haven't paid close attention to
> previous threads, how the water passes through a membrane, hence the osmosis
> part, to produce softwater (over simplified I know). And that it produces
> about 25% R/O water and about 75% waste water (YMMV), which some folks use
> for water gardens and other fun stuff.
> He than asked, "Why can't you run the waste water to your water softener to
> use for your house water needs?" To which I replied, "Gee. I don't know."
> I know there must be a reason otherwise the folks on this list would have
> done it long ago. So why not?
> Bill Vannerson
> McHenry, IL
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