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High pH in HLT water

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  • High pH in HLT water

    We are seeing high (7.8) pH in the water in our Hot Liquor Tank. Incoming water is usually about 6.8-7.2 pH. We did an acid wash of the HLT, and it dropped to 7.0 for a few days, then crept up to 7.8 and we are trying to figure out why. Would appreciate any insights and suggestions.

  • #2
    Originally posted by TNFlyrodder View Post
    We are seeing high (7.8) pH in the water in our Hot Liquor Tank. Incoming water is usually about 6.8-7.2 pH. We did an acid wash of the HLT, and it dropped to 7.0 for a few days, then crept up to 7.8 and we are trying to figure out why. Would appreciate any insights and suggestions.
    Hi,

    We would suggest you a water treatment for you.
    Maybe your water have much Mg2+ and Ca2+, they will turn to Mg(OH)2 and CaCO3 in high temp.
    Mg(OH)2 and CaCO3 are slightly soluble in water, that will cause ph rise .Hope it can helps.

    Cheers,
    Brewman Machinery Equipment Co.

    Comment


  • #3
    Depends so much on what your water has in it. pH alone is very poor indicator of water quality. For example, in water that has very little TDS, the pH can swing wildly with very little ionic addition. One drop of acid in distilled water swings the pH very low--with little consequence in the suitability of that water for brewing. Titration is much more accurate way to know ionic composition of water.
    Phillip Kelm--Palau Brewing Company Manager--

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    • TNFlyrodder
      TNFlyrodder commented
      Editing a comment
      Thanks. We have felt like we had good water quality, based on lab analysis. I had not considered that with our low ionic content we could get wild swings from very little acid or base.

  • #4
    Our water analysis, incoming water after carbon filter:

    Chloride 6.65 mg/L
    Sulfate 3.6 mg/L
    Alkalinity 50 mg CaCO3/L
    Calcium 12.6 mg/L
    Magnesium 6.24 mg/L
    Sodium 3.70 mg/L
    Total Hardness 57.2 mg CaCO3/L

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    • #5
      Is the pH of your mash OK?
      Water Treatment Systems & Supplies www.BuckeyeHydro.com
      Info@buckeyehydro.com 513-312-2343

      Comment


      • TNFlyrodder
        TNFlyrodder commented
        Editing a comment
        Mash pH was on the higher side, but still OK. 5.6 to 5.7.
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