DELOACH BLOG

The Basics of Water Decarbonation (with audio)

Posted by Anthony DeLoach, President on Feb 25, 2019 1:04:12 PM

 

The Basics Of Water Decarbonation (audio)

Basics of water decarbonation for dissolved organic carbon.

The water treatment industry continues to develop and evolve and over the past two decades there have been many new developments in technology and even more refinement in existing technologies such as "Degasification". The evolution and advancement of water treatment have been driven by the constantly increasing demand from an increase in population that demand cost-effective solutions and recognition to improve safety with the implementation of NSF 61 standards.

All human cultures on our planet share a single commonality and that is the dependency on water to survive.

Many existing technologies such as "Degasification" have evolved with higher efficiency to meet the demand changes and provide safety to consumers and to the systems. Degasification refers to the removal of dissolved gases from liquids and the science to degasify water is based upon a chemistry equation known as "Henry's Law". The "proportionality factor" is called Henry's law constant" and was developed by William Henry in the early 19th century. Henry's Law states that "the amount of dissolved gas is proportional to its partial pressure in the gas". The most "cost" effective method to perform degasification is with the packed vertical tower called a "Degasifier” or “Decarbonator”.

The key words in this previous sentence for owners, operators, and engineers to focus on is "the most cost-effective" as there is no other process more cost-effective at removing dissolved gases at the lowest cost than the use of a Degasifier or decarbonator. The process of degasification is simple enough to understand. Water is pumped to the top of a vertically constructed tower where it first enters the tower through some type of distribution system at the same time there is a cross current air flowing up from the bottom by a blower located at the bottom of the tower and the air encounters the water and is exhausted at the top of the tower through an exhaust port. There are various types of distributions systems and we will explore these in later discussions. Once the water enters the top of the tower and passes through the distribution system it then travels by gravity downward. The next thing the water encounters is some type of media packing. There are various forms of media packing offered in the degasification industry and each type can offer higher performance or have the ability to deter fouling. The selection of the type, size, and volume is where the “experience, engineering and understanding of each application” comes in to play.

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Topics: water treatment issues, water quality, degasification, pH levels of water, water treatment, advanced treatment solutions, About DeLoach Industries, water plant, NSF/ANSI 61, hydrogen sulfide (H2S), media packing, pH levels, scaling, caustic, Decarbonation, Safe drinking water, dissolved gases, carbon dioxide, decarbonator, boiler system, degasifier, carbonic acid, H2S Degasifier, Dissolved organic Carbon, co2 dissolved in water

Industrial Boiler Feed Water For Steam

Posted by Anthony DeLoach, President on Jul 31, 2018 10:01:00 AM

Industrial Boiler feed water in water treatment.

In the USA market alone it is estimated the manufacturing industry consumes over 400 millions of gallons per day (MGD) of water to produce steam. Approximately 60 millions of gallons per day (MGD) of water is sent to the blow down drains in manufacturing. Another approximate 300 millions of gallons per day (MGD) of steam is consumed for direct injection. All this steam required in manufacturing shares the same common need, “water”. But not only water but “purified and treated” water is needed. For without the treatment process US manufacturers would face constant shut downs and increased capital spending driving their cost of goods through the roof. One form of water treatment to protect boilers is degasification and deaeration.

Degasification towers remove

hydrogen sulfide (H2S) and carbon dioxide (CO2), and quite often dissolved oxygen (DO). Removing dissolved corrosive gases is critical to the life and efficiency of the boiler and if the gases remain in the boiler feed water such as carbon dioxide (CO2) it will create a recipe for disaster, higher operating cost, and a reduced life for the boiler system. The carbon dioxide (CO2) will convert into carbonic acid and form a corrosive condition for the boiler and other critical components. If a boiler system is operating an ion exchange process prior to the boiler the regeneration cost will increase dramatically because the resins will be consumed by the carbon dioxide (CO2). In addition to preserving and increasing the life of the resin the removal of the carbon dioxide (CO2) will elevate the pH of the water without the addition of other chemicals again lowering the operating cost of the system.

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Topics: water treatment issues, degasification, iron oxidation, water treatment, water distribution system, advanced treatment solutions, water plant, hydrogen sulfide (H2S), Decarbonation, ION Exchange Resin, feed water, De-Aeration, steam generation, steam generating boilers, carbon dioxide, steam, decarbonator, boiler system, degasifier, gases, RO membrane, carbonic acid, RO system, H2S Degasifier, Boiler feed water

Dearation in Water

Posted by Anthony DeLoach, President on May 31, 2018 12:00:00 AM

Removing gases to protect your boiler

The process of removing dissolved gases from feed water to steam-generating boilers is often referred to as “Deaeration”. During the deaeration process dissolved oxygen (02) and carbon dioxide (CO2) are removed prior to entering the boiler. If the gases are not removed prior to reaching the boiler system, the boiler will experience serious corrosion damage. The gases, when in contact with the metallic equipment will form oxides (rust) and it will attach to the walls of the piping and tubes and over time completely shut down the boiler. The dissolved carbon dioxide combines with the water and forms carbonic acid that also further enhances the corrosion process.

Most deaerators utilize steam to enhance the removal of the dissolved gases and levels are typically reduced to 7 ppb by weight or less for the oxygen (02) and the removal of carbon dioxide (CO2). For a system only needing CO2 removal then a decarbonator is typically used as it operates without the need for steam and for much less operating cost. For more information or to learn more contact the professionals at DeLoach Industries Inc. at (941) 371-4995.

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Topics: Decarbonation, dissolved gases, feed water, De-Aeration, steam generating boilers, carbon dioxide, oxygen, steam, decarbonator, boiler system

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