Ph Adjustment In Water Treatment

[Harcourt Ordonez]

ApH adjuster is a chemical used to alter the pH or Potential Hydrogen level. pH (Potential Hydrogen) is the measurement of the activity of the hydrogen ion or how basic or acidic something is. By adding a pH reagent such as an acid you can drive pH downward. By using a caustic or other alkaline substance you can drive pH upward. Typical pH range is 0-14 but actual pH levels can exceed these theoretical limits.

Sulfuric acid and sodium hydroxide (caustic) are most commonly used for neutralizing acids or bases. Caution must be used for pH adjust applications as an exothermic reaction will occur generating heat. The more severe the application the more heat generated. For example; pH adjusting tap water will create very little heat and is a non-issue. Neutralizing solutions with a high percentage acidic or bases can generate significant heat and therefore must be considered in design and materials. Use caution when doing any pH adjustment.

Unfortunately in the world of pH there is no one size fits all standard for what to use for pH adjustments in water treatment. pH Adjusters for Water Treatment include many chemicals that have varying benefits and disadvantages. We suggest speaking directly with one of our chemists to analyze your application and determine the best course of action. To understand more about what you should use to adjust pH in your facility or application, our WaterFact post on What should I use for Alkalinity Adjustments in my Wastewater Treatment Plant? will provide some clarity on different ways you can adjust pH. In addition, see our product information below to assist in choosing the product that meets your needs.

Chlorine is a NEIPA killer. Chlorine and chloramine can produce chlorophenols in beer that contribute plastic-like or medicinal off-flavors. More delicate styles, such as NEIPAs are more susceptible to these types of off-favors. If your water comes from a municipal source, it was likely treated with one or the other. I would strongly encourage you to always treat your brewing water with Campden at an absolute minimum. Chlorine can be removed from water by simply letting it sit out for 24 hours or by pre-boiling it. Chloramines MUST be treated with Campden to remove.

88% lactic acid: Most homebrewers use lactic acid to decrease the ph of wort/mash. Brewing salts will contribute to lowering pH as well, however usually some level of lactic acid is needed. My tap water pH is on the higher side, so I need to use more than when I brew with RO/distilled.

One particular local brewery I really love actually uses the inverse of 1-2 chloride to sulfate. Being a huge proponent of their hazy IPAs, it makes me really question which ratio/amount I do actually prefer. Of course there are a number of other factors like mashing temps, grain bill, yeast, and final gravity that impact final beer character.

Wort pH is another hot topic when it comes to water adjustment. There are actually two things to note here. Mash pH and boil pH. Mash pH helps promote mash conversion and better-tasting beer. This is no news to most seasoned homebrewers. Boil pH is another story and deals more with hop extraction and bitterness. Read this article here regarding boil pH and hop utilization. In short, this article suggests that hop bitterness extraction is greater with a higher boil pH. Lower boil pH may lead to smoother bitterness.

Hey Shawn! Thanks for the tips here. I did have a question regarding Campden Tablets. If I plan to use Distilled Water, do I still need to add Campden Tablets or can I just proceed to build out the water profile?

In 2024, Medford Water began increasing the pH of the treated water from both of our sources in order to improve the longevity of our system and further enhance water quality, helping us to continue delivering the highest quality drinking water to your homes and businesses.

A minor increase in scaling on equipment may occur due to the alkalinity of the water slightly increasing as a result of the pH increase. If you have specific concerns about how the increase in pH may affect the operations and/or maintenance procedure of your business or equipment, consult the manufacturer or operator of the equipment. Customers can contact the Oregon Health Authority for more information on how changes in pH may affect medical operations. There is no risk expected to dialysis patients, and the pH increase will not affect in-center or home dialysis treatment operations.

An increase of pH of the water used in brewing operations can affect the process of crafting beer or spirits. Homebrewers should ask their local homebrew shop for suggestions on appropriate products to reduce pH. Breweries and distilleries typically have their own procedures for testing and adjusting water used in their operations and should continue to follow them.

Similar to brewing, some food processing methods require specific pH conditions. If your business or facility contains processes that are known to be pH dependent, it is recommended that procedures for testing and adjusting water are implemented if not already in place.

pH is a measure of the concentration of hydrogen ions in the water, which indicates how acidic or basic water is. The pH of drinking water depends on the water source, treatment methods, and other factors, but generally lies within the range of 6.5-8.5. This change will bring our water from 7.0-7.3, depending upon the source, to a target of approximately 7.8

Currently, the pH of water entering our drinking water system from Big Butte Springs is approximately 7.0, and 7.3 for the water entering from the Rogue River. This small increase in pH, using sodium hydroxide, will eventually bring both sources to a target of approximately 7.8. This number is well within the common drinking water pH range of 6.5-8.5.

MW will implement the pH increase first at Big Butte Springs in January 2024, and plans to increase pH in the water from the Rogue River in the spring. Our award-winning water will not taste or smell any different due to this small increase in pH, though it is predicted to result in a minor increase to the alkalinity of the water.

In addition, the change will not result in any measurable impact to hair or nails; pool/hot tub owners should continue with their regular water testing schedule, and garden owners with their soil testing.

While they are linked, pH is different than hardness, which is the measure of the mineral content of the water, typically measured by dissolved calcium carbonate (CaCO3). The harder the water, the less easily soap will lather. Typically ranging between 25 and 40 ppm, our water tends to be moderately soft, and this will not change. Hardness is also sometimes given in grains per gallon, with our water generally having between 1.4 and 2.4 grains per gallon.

Medical facilities/equipment users

As noted above, a minor increase in scaling on equipment may occur due to the alkalinity of the water slightly increasing as a result of the pH increase. If you have specific concerns about how the increase in pH may affect the operations and/or maintenance procedure of your business or equipment, consult the manufacturer or operator of the equipment. Customers can contact the Oregon Health Authority for more information on how changes in pH may affect medical operations. There is no risk expected to dialysis patients, and the pH increase will not affect in-center or home dialysis treatment operations.

Breweries/individuals who brew beer at home

An increase of pH of the water used in brewing operations can affect the process of crafting beer or spirits. Homebrewers should ask their local homebrew shop for suggestions on appropriate products to reduce pH; breweries and distilleries typically have their own procedures for testing and adjusting water used in their operations and should continue to follow those procedures.

Food processing customers

Similar to brewing, some food processing methods require specific pH conditions. If your business or facility contains processes that are known to be pH dependent, it is recommended that procedures for testing and adjusting water are implemented if not already in place.

Corrosivity describes the quality of eroding or eating away, such as water eroding pipes and fixtures. Corrosive water can cause lead and copper in pipes to leach into drinking water and can eventually cause leaks in plumbing. Surface water and groundwater, both sources of drinking water, can potentially be corrosive, depending upon the chemistry of the water.

3a8082e126