Doug Frassa

Doug Frassa is responsible for divisional and operational support of the Water Treatment Division. His responsibilities include management of sales, marketing, product management and onboarding of new channel partners within the Water Treatment Division.
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Recent Posts

Utilizing Cooling Tower Blowdown Properly

Posted by Doug Frassa on Jul 22, 2015 7:30:00 AM


Cooling towers concentrate water by evaporation and therefore concentrate dissolved solids in the water.  They also act as air scrubbers; collecting dirt, debris and microbiological material that gets sucked into the tower.  This material circulates throughout the water circuit and concentrates along with the dissolved solids as the water evaporates. As the concentration increases, the dissolved solids (mineral salts) reach the saturation point and precipitate to form a gritty sludge that accumulates and deposits on condenser tubes, heat exchanger surfaces and can harden into scale.

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Topics: Cooling Tower

Biological Concerns with Nitrite Based Programs

Posted by Doug Frassa on Jul 15, 2015 8:30:00 AM


This article is Part 2 of 3 of a series on nitrite closed loop treatment programs.

In Part 1, we introduced nitrite programs closed loops, discussing how they perform and some of the issues to be aware of with these programs. In Part 2, we will take a deep dive into the nitrogen cycle and how that can impact nitrite based programs, or quite simply, what are the technical reasons behind why your nitrite residuals keep disappearing.

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Topics: Cooling Tower

Understanding Problems in Closed Loop Systems

Posted by Doug Frassa on Jul 8, 2015 9:00:00 AM


When treating a closed loop cooling system, you may encounter some of the same issues or problems that you have experienced when treating cooling towers.  Closed loops can experience problems that rob efficiency and destroy equipment through corrosion, scale, biological growth and fouling.  The initiation of these shared issues may be different between a closed loop and a cooling tower system, but the water related problems to be addressed are fundamentally the same.

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Topics: Cooling Tower

Nitrite-Based Closed Loop Treatment Programs

Posted by Doug Frassa on Jun 30, 2015 9:30:00 AM

This article is Part 1 of 3 of a series on nitrite closed loop treatment programs.

About Sodium Nitrite 

Sodium Nitrite has been used as a corrosion inhibitor for closed loop water systems for many years. Sodium Nitrite functions as an anodic corrosion inhibitor in much the same manner as chromate and molybdate. As an anodic corrosion inhibitor nitrite works to form a protective gamma iron oxide film on the metal surface. This layer is formed by the reaction of nitrite and dissolve oxygen and then kept in repair by the nitrite alone. Nitrite is not consumed to any practical extent since little is needed to from this film. It is this film that protects the metal surface from corrosive attack.

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Topics: Cooling Tower

4 Common Problems In A Cooling System & Their Effects

Posted by Doug Frassa on May 15, 2015 1:56:30 PM

 

Good cooling system maintenance is good business, and good maintenance begins with a good water treatment program. Cooling system water quality and the treatment program directly affects the reliability, efficiency, and operating cost of any industrial or institutional cooling system.

Facilities must monitor and maintain control of four major water treatment issues – corrosion, scale, fouling, and microbial contamination – for optimal operational efficiency and system reliability. In return, they experience reduced equipment and operating costs for their cooling systems. This results in reduced unscheduled downtime caused by water related problems.

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Topics: Cooling Tower

Cooling Tower Start-Up For Success

Posted by Doug Frassa on May 6, 2015 9:17:00 AM


As the weather warms up, many facilities are transitioning from the use of boilers for building heat to cooling systems for air conditioning. During this process, it is crucial to have a cooling system commissioning program in place to reduce corrosion, deposition and fouling. The proper start up will help reduce critical issues that will unfavorably impact equipment reliability, efficiency and personnel health. 

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Topics: Cooling Tower

5 Factors That Impact the Formation of Boiler Scale

Posted by Doug Frassa on Apr 2, 2015 12:05:15 PM

Energy efficiency of your boiler system centers around keeping your boiler clean and free of scale. Boiler scale can be a hard, tenacious deposit or a softer coating of insoluble salts, which forms on boiler tubes and walls. It’s most often caused by makeup water hardness, which refers to the naturally occurring calcium and magnesium ions found in water. These ions, when heated to the high temperatures inside a boiler, are what creates the scale and scale buildup. This buildup will not only cause a reduction in energy efficiency of the boiler, but can lead to boiler tube overheating potentially to the rupturing of the tubes.

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Topics: Boilers

Organic Oxygen Scavengers: Understanding Common Varieties

Posted by Doug Frassa on Feb 25, 2015 9:43:00 AM

Boiler System

Organic and inorganic oxygen scavengers decrease or remove the level of oxygen in the water by reacting with the dissolved oxygen in the water. This reduces the accelerated corrosion caused by the presence of oxygen in a high heat environment.

It’s important to note that not all scavengers are created equal. The differences among them can be significant in terms of effectiveness, temperature ranges, cost, reaction time and type of systems where they can be utilized.

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Topics: Boilers, Oxygen Scavengers

Inorganic Oxygen Scavengers: Explaining Common Varieties

Posted by Doug Frassa on Feb 18, 2015 4:29:54 PM

Boiler System

Organic and inorganic oxygen scavengers decrease or remove the level of oxygen in the water by reacting with the dissolved oxygen in the water. This reduces the accelerated corrosion caused by the presence of oxygen in a high heat environment.

The difference between oxygen scavengers lies in their effectiveness, temperature ranges, cost, reaction time and type of systems where they can be utilized.

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Topics: Boilers, Oxygen Scavengers

Advantages of a Fluorescent Monitoring System

Posted by Doug Frassa on Jan 20, 2015 3:48:00 PM

 

fluorescent_test_tube_cropped_for_webMaintaining the proper amount of chemical feed is critical to operating an effective water treatment system. Efficient and automated testing and monitoring of chemicals can lead to lower operating costs and higher system performance. One option for better control and testing of chemical treatment levels is utilizing products that include a fluorescent tracer.

Let’s take a closer look at fluorescent dye markers, evaluate the benefits of this monitoring system, and explore some new products that reduce the cost of entry. 

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Topics: Monitoring Dyes

About this Blog

QualiChem's Water Treatment Solutions Blog offers helpful information about:
  • Boiler water systems 
  • Cooling towers and corrosion
  • Products designed for Water Treatment applications
  • Water treatment chemicals business ownership

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