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Home » Topics » Columns » Water Works

Water Works
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Water guru Paul Puckorius shares his expertise about water and wastewater systems, treatment, troubleshooting and technology.

ARTICLES

Process Cooling Water Topic and Column

Friend or Foe? Water Treatment and Cooling Towers

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Paul Puckorius, Puckorius & Associates Inc.
January 18, 2006
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A common saying in the water treatment industry is that cooling tower manufacturers do not know (or care) about water treatment. Likewise, the cooling tower manufacturer says he knows how to cool water and does not address water treatment.
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Filters for Cooling Water Systems

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Paul Puckorius, Puckorius & Associates Inc.
March 1, 2005
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"Should filters be used on cooling water systems?" is a question I am often asked. So what do I say? Well, it depends on a number of considerations, but my first response is absolutely an unqualified "Yes." Filters are a cost-effective investment. Filters remove suspended solids from the cooling water and thus reduce many problems. So, what are these considerations?
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Do All Closed Chilled Water Systems Need Water Treatment?

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Paul Puckorius, Puckorius & Associates Inc.
January 1, 2005
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"Do all closed chilled water systems need water treatment?" is a question I have been asked numerous times. Why is it asked? Well, I know of persons who have been in charge of closed chilled water systems that do not use any water treatment chemicals whatsoever -- and operate trouble-free.
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MicroBio Control of Cooling Water Systems, Part 2

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Paul Puckorius, Puckorius & Associates Inc.
November 1, 2004
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An oxidizing microbiocide is as any chemical that is an oxidizing agent. They are chemicals that kill and destroy not only the microorganism but also the nutrients found in cooling water. Their action is essentially "wet oxidation" or "burning" under water. No microbiological organism is immune to this action -- provided that the oxidizing biocide can reach the microorganisms.
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MicroBio Control of Cooling Water Systems, Part 1

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Paul Puckorius, Puckorius & Associates Inc.
September 7, 2004
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Cooling water microbiological control is important all year long -- and even more important during the warm days of summer. This is not only due to warmer water temperatures but also due to more nutrients and microbiological organisms entering the cooling tower system from the air.
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Do You Have MIC? Part 2

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Paul Puckorius, Puckorius & Associates Inc.
July 1, 2004
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In addition to deposit-forming microorganisms and iron-depositing, sulfate-reducing and nitrifying bacteria, there are two other mechanisms that cause MIC: denitrifying bacteria and acid producers.
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Do You Have MIC? Part 1

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Paul Puckorius, Puckorius & Associates Inc.
May 1, 2004
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What is MIC? It stands for microbiologically influenced corrosion -- yes, corrosion in water systems due to microbiological organisms. These microbes do not "eat" metals such as mild steel, stainless steel, copper alloys or galvanized steels. Rather, they produce byproducts that are corrosive to these metals.
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Which Should You Choose?

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Paul Puckorius, Puckorius & Associates Inc.
January 1, 2004
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Cooling tower water systems are composed of three major sections: cooling tower, chiller or heat exchangers, and piping. Each section must be considered when designing a cooling tower water system. Often, initial capital cost of equipment is a strong driving force. Little, if any, water treatment costs are incorporated in the design and equipment purchase decision.
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Cooling Water System Corrosion Guidelines, Part 2

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Paul Puckorius, Puckorius & Associates Inc.
September 1, 2003
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Part 1 identified the steps in setting up a corrosion monitoring program, including the use of corrosion coupons. Two additional corrosion-monitoring techniques are available: electric resistance (ER) and linear polarization resistance (LPR). In Part 2, I'll look at these methods in detail.
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Cooling Water System Corrosion Guidelines, Part 1

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Paul Puckorius, Puckorius & Associates Inc.
July 1, 2003
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These are some of the common questions end users and owners often ask. However, often they are asked after equipment replacement has occurred or about to be due to corrosion. Here, I hope to provide you some guidelines and helpful advice for corrosion testing of the components in your cooling water system so that they will last longer.
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