Adding Bleach to RO Water

[sailorman14]

I put 1/2 cup Clorox in my 90 gallon tanks.
That keeps the bugs out then I have a charcoal water filter that takes the chlorine out before the faucet. So if you use that water to flush your water make it should not have chlorine in it.

[mitiempo]

https://www.laballey.com/products/bu...d-1-pint-29-90

That is $240 per gallon.

[teneicm]

We are very careful to try and keep chlorine away from our membranes. We intentionally never add bleach to our RO water. Never had a need to, as the water is always clean (stainless steel tanks, so perhaps the lack of any light keeps the algae away). 8 years of living primarily off RO and captured rainwater (also goes into the tanks), and no one in the family seems the worse for it.



I get concerned when we are forced to use municipal water with chlorine in it. But by the time we need to use/flush the water maker typically several weeks will have passed and the chlorine should have come out by then. Also, we'll only make water when the tank is very low, so any residual chlorinated water will be diluted heavily by the new RO product water. We also try to use only one tank for municipal water, and the other tank is kept on rain or RO water that can be used to flush. The water maker filter for the backflush does have an activated charcoal cartridge in it, but I don't trust it to get everything, hence the cautious procedures we take.

[Wotname]

Originally Posted by Pillroller

100 % Alcohol as potable spirit drink. NO CHANCE. It is extremely expensive to make 99% alcohol Or even 95% I know I used to buy it for my hospital Pharmacy. It may have been 100 degrees "proof spirit" which would be approx. 50% V/V. By distillation the max strength is c60/70 %. after that you have to work harder. You can buy 190proof "Grain Spirit @ 50£ sterling for 750ml. Pretty expensive? R.

Minor correction, it is quite simple to distill alcohol (ethyl alcohol) to about 93% pure (ie ABV).

Cheap as chips to make but most of the price of these high alcohol spirits is excise tax which is usually levied by the percentage of alcohol.

[ejjawhite]

At about 25 ppm, most people will be able to smell chlorine in water.

[com5984]

I use a mixture of hydrogen peroxide and colloidal silver

[TheWindsurfer]

Originally Posted by Timethief

I am going to presume he is using powdered Chlorine, not liquid.

Aaaaaaaaaaaaah

[dfelsent]

I used to work with chlorine. The gas.
Neither powderable nor liquid at room temperature. Really nasty stuff. Not as bad as fluorine., arsine, phosphine, or tri-methyl aluminum which I also worked with.
That’s not what we might put in our water.
We put in compounds that break down into chlorine and other constituents. The chlorine kills things. Dead. That’s why it’s good.
And why it’s bad. Leetle bit? Good. Kills bugs. Lots? Bad for people.
Balance.

[AMCarter3]

Just remember, if you have an aluminum water tank like my boat, bleach corrodes aluminum.

[sailorboy1]

Originally Posted by sailorboy1

So 25 years of water treatment experience and training tells me to maintain a small free chlorine level in my water system. This is easy when filling the tanks from city water, but now I am using my watermaker.

Yes there is a carbon filter in the wm flush system to remove chlorine as we know that kills the membrane. I long ago installed a small standard carbon drinking water filter as i used to maintain a fairly high chlorine level because that water would be in the tanks a long time. I know for a fact via testing that it removed the chlorine, but if not all it effected really was taste.

So for cruisers using RO, are you adding a little bleach etc. to your water tanks, which course gets used for RO flushing later?

And yes I understand some make extra water in a bucket and then use that.

So in the end ....................... I added the bleach.