Corrosivity, Ryznar Index

[mccabegc]

I am not sure if this falls under the softening category of not so I didn't want to lump it in my previous post. My recent lab results have this listed as 8.3 S.U.

I am having a hard time finding info on dealing with corrosive conditions.

Any advice would be great!!

 

[Reach4]

Probably pH neutralization. Calcite and maybe corosex. What is the pH? Hardness? If you do a search for calcite corosex , you will find information. I would search this forum as well as in a search engine. Those add hardness, so the softener will see increased hardness to deal with following calcite. A backwashing treatment tank is better than the calcite tanks without a controller.

There is also the possiblity of using an injection pump for neutralizing.


A local provider is probably practiced with treating your local water. Have you compared notes with the neighbors?

You want to avoid having metal pipes facing your un-neutralized water.

 

[Sponsor]

 

[mccabegc]

Probably pH neutralization. Calcite and maybe corosex. What is the pH? Hardness? If you do a search for calcite corosex , you will find information.

A local provider is probably practiced with treating your local water.

Also, you don't want metal pipes facing your un-neutralized water.

pH is 7.7
Hardness 80.6 mg/l - 4.7gpg
Calcium 29.3 mg/l
Magnesium 1.8 mg/l
Manganese .099 mg/l
Conductivity 190 micromhos/cm

I will do a search as you suggested to see what I come up with.

Thank You

 

[Reach4]

pH is 7.7
Hardness 80.6 mg/l - 4.7gpg
Calcium 29.3 mg/l
Magnesium 1.8 mg/l
Manganese .099 mg/l
Conductivity 190 micromhos/cm

I will do a search as you suggested to see what I come up with.

I take it back. I was not expecting a 7.7 pH. Forget what I said about the calcite.

http://www.lenntech.com/calculators/ryznar/index/ryznar.htm

Man, I had not checked out such a calculator. It is surprising what effect water temperature has on that calculator. It does not feel right that raising water temperature would make it less corrosive. I am confused more than usual.

Micromhos/cm is the same as microS/cm.

 

[mccabegc]

That was my first thought. When I first paged through the report yesterday, I thought I was in good shape, mildly hard water,and some odors. Add a softener and some in line filters for light odors and I'd be good to go. Last night I took a closer look and found that number.

 

[Reach4]

I like this calculator better: http://www.baronchemicals.com/LSI RSI.aspx

 

[mccabegc]

I like this calculator better: http://www.baronchemicals.com/LSI RSI.aspx

Based upon that calculator my Ryznar number jumped to 12.68 PHS 10.19 and Langelier -2.49

Very concerned as my pH is within normal range but my corrosive numbers are high.

 

[Reach4]

I plugged these numbers into that calculator, and got the matching corrosivity numbers from my report.

20C (somewhat arbitrary choice).
Bicarbonate (as CaCO3) (why not carbonate? Dunno.)
Alkalinity (as CaCO3)
pH
TDS​

Have you seen any pipe problems? Do you have copper or steel pipe? I don't know what the level of concern should be. If there was a lot of reason to be concerned, I think there would be more discussion on this.

 

[mccabegc]

Copper throughout the house. No leaks, that I have seen. I agree, I am not sure what my level of concern should be.

I think I will continue with my plan for a softener and in line filters and monitor this in a future test. Why? Because I do not know what else to do at this point lol.

I appreciate your help and will report back if I happen to find any more info on this topic.

 

[Reach4]

I guess one action item is to let the water run for a while before getting drinking water. This would be to let copper dissolved overnight get washed through. One test would be to test the first water in the morning.

https://www.epa.gov/dwreginfo/lead-and-copper-rule

Type M copper (red ink) is thinner than type L (blue) or K (green).