DELOACH BLOG

Water Treatment Compliance with NSF/ANSI 61 Certification (with audio)

Posted by Anthony DeLoach, President on Jun 12, 2019 10:24:13 AM
WATER TREATMENT COMPLIANCE WITH NSFANSI 61 certification (audio)

 

The process of Decarbonation requires

the use of a vertically designed Degasification tower. A Decarbonation tower is specifically design

ed to remove Carbon Dioxide (CO2) from a water treatment process. When the water is being treated for “potable” use for direct or indirect consumption than all of the components used in the process must comply with NSF/ANSI 61 standard to assure that the components that have direct contact with the water are safe and will not introduce any foreign substance during the treatment process. Decarbonation towers have direct exposure and contact with the water during the removal of CO2 and therefore must be manufactured from material such as Fiberglass (FRP) that complies and meets the NSF/ANSI 61 standard.

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Topics: water treatment, NSF/ANSI 61, Safe drinking water

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)

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

Industrial Odor Control: The Do’s and Don’ts

Posted by Anthony DeLoach, President on Jul 26, 2018 8:32:00 AM

When planning or designing an odor control system one should pay close attention to several key variables that can cause havoc on a chemical odor control scrubber when trying to treat hydrogen sulfide or ammonia gases.   The need for odor control occurs for many different forms and it is important to have a good understanding of the process that is creating the odorous or corrosive gas and the need for the odor control & air emissions treatment.

First begin to identify

all the potential obstacles that may creep up later after the chemical odor or corrosive gas control system goes on line like acid or caustic consumption. As an example, chemical odor control systems that are designed for water treatment for the municipal industry are typically needed and attached to a degasfication or decarbonation process which are often needed to treat hydrogen sulfide (H2S). However, many times designers may not pay close enough attention to the type of water process that is available to use for “make-up” water for the chemical scrubber and with the addition of caustic this can create scaling or fouling. This unknown variable of the make up water quality can lead to a complete tower shutdown if the chemical scrubber distribution and media bed scales or fouls. The most commonly used chemicals for a hydrogen sulfide (H2S) scrubber are either chlorine in the form of sodium hypochlorite or caustic in the form of caustic soda. Both of these chemicals are both common to a water treatment facility and already in place for the adjustment and control of pH.

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Topics: odor control, water treatment, advanced treatment solutions, biological scrubber, water plant, odor control scrubber, hydrogen sulfide (H2S), calcium carbonate, media packing, pH levels, Alkalinity, Langilier index (LSI), scaling, chlorine, caustic, ION Exchange Resin, Safe drinking water, dissolved gases, De-Aeration, carbon dioxide, oxygen, degasifier, gases, H2S Degasifier

Recycling Wastewater For Safe Drinking Water

Posted by Anthony DeLoach, President on May 29, 2018 12:00:00 AM

Over the last 2 decades there has been vast development and improvement of wastewater technologies in regards to the water treatment processes that have been driven by both need and governmental regulations. Today, municipalities and Countries are recognizing the need to recycle wastewater into drinking water and in locations such as the Caribbean and other foreign nations the wastewater to drinking water industry is more of a “must” than a choice.

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Topics: water quality, advanced treatment solutions, Safe drinking water, wastewater, Recycling, Caribbean, Global

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