diggity
Member
But I'm confused... that's how the softener has been working for over a decade. No pre-treatment. Why would it be bad to go back to that?
If the peroxide, chlorine or other oxidizer doesn't have enough contact time to react with the iron to oxidize it, then you're likely just wasting money no matter how much or how little oxidizer you add.I guess I could feed it undiluted, which would mean that I'd be using about 2 gallons of peroxide per week, but at $10 per gallon, that will get expensive over time.
Yeah, I know, but I'm so not into chlorine. Besides, isn't peroxide a stronger oxidant than chlorine?
I am surprised at the low H2O2 consumption. I think that a good size contact tank is very important to let such low injection amounts succeed. I also read that colder water and higher pH water need more H2O2 to be effective.I've got 2ppm of iron, I go through about 1 gallon of H2O2 per year! (roughly 100 gallons of water per day)
Again, I am surprised at the low levels needed. I use more total bleach than that for my regeneration done every 3 days. My bleach is then rinsed off of the media during the regen.I'm a fan of bleach. It's cheap, readily available, NSF-certified (Clorox brand, anyway) for use in potable water, and its residual is easily removed by a GAC filter. We use 105 gpd, a $3 jug lasts us for months, and there's no hint of chlorine smell in the finished water.
What strength are you buying?I go through about 1 gallon of H2O2 per year!
There are 1440 minutes in 24 hour period, and the formula will tell you how many gallons of hydrogen peroxide you will use for every 24 hours the well pump runs.
Plugging in my own numbers (guesstimating the output of the pump and the iron concentration):
10 GPM x 20 PPM x 1440 and divided by 35,000 = 0.34 gallons of peroxide per day.
Right now, I'm using about a gallon per week, which would be 0.14 gallons per day. So I'm only feeding at half the recommended rate.
Wow. One of us is doing something wrong. I use Clorox Regular unscented bleach (8.25% NaClO), which comes in 3.78 qt jugs. When my chlorine tank (30 gal) gets low (around 5 gallons), I dump in a jug of Clorox, while filling the tank with softened water -- usually just around 20-25 gallons. A Pulsafeeder pump injects this diluted solution into the pipe feeding the contact tank when the pump is running. This is obviously a poor way to mix, but it's a commonly-used method. I haven't done the math to set the pump, but I monitor the output from the contact tank, and tweak the pump as necessary to maintain about a 2.5ppm free chlorine level. As I said, I have to go through this every 5 or 6 months.Again, I am surprised at the low {bleach} levels needed. I use more total bleach than that for my regeneration done every 3 days. My bleach is then rinsed off of the media during the regen.
I think the contact time would contribute to determining the target residual needed.That way, if you need to carry a residual to the faucet (for pathogen sterilization), then you can monitor for that. Or, if you want to inject just barely enough peroxide to zap the iron without leaving any residual, then you can do that too.
This is awkward, but...
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