CTI Bibliography of Technical Papers - Water Treatment

Revised 2017

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Water Treatment
Order NumberTitleAuthorDate
Advantages of Mixed Oxidant Solutions (MOS) in Industrial Cooling Water Systems Michael Dorsey, AquaCorr Services; Matt Walker, Design Controls 2017
Abstract: This paper looks at the benefits of using a MOS in cooling water systems over traditional biocide treatment methods for the following reasons: Microbio control is critical in industrial cooling water systems. Traditional treatment programs consist of oxidizing and non-oxidizing chemicals. Oxidizing biocides have limited effectiveness in high pH environments while non-oxidizing biocides are expensive and hazardous. Onsite generated MOS is safe, inexpensive and effective in high pH water. Methods evaluating these different treatment programs we monitored halogen levels, and microbio activity in industrial cooling water systems in similar cooling water systems. Results were recorded and compared over a period of time. The results from this test demonstrate that MOS solution can be a more effective biocide treatment program by providing better overall microbio control as a safer and less expensive program. The conclusion is that all industrial cooling water systems are unique. However, microbio control comes down to the effectiveness of the biocide program in that given application.
Improved Clarification in Cooling Water Treatment by Efficient Polymer Mixing Yong Kim, UGSI Solutions, Inc. 2017
Abstract: As a way of maintaining the zero liquid discharge at cooling water treatment, polymeric flocculants have been used along with other chemicals in reactor-type clarifier. A properly designed polymer feed system is the key for achieving superior performance and cost-effective solid-liquid separation. This presentation illustrates how to prepare more efficient polymer solutions based on the knowledge of fluid dynamics and polymer chemistry. It includes an extensive review of papers on the relevant subject. Results of various laboratory testing and field evaluation are followed regarding the effect of dilution water chemistry and different mixing technologies on the effectiveness of polymer solution.
Failure of Building Water Systems: How to Plan for Success and Manage Liability Adam Green, Baker Donelson Bearman Caldwell & Berkowitz, PC and Robert J. Cunningham, Arthur Freedman Associates 2017
Abstract: The premature failure of building water systems and mechanical equipment can result in large liabilities. The resulting lawsuits reflect that the reasons for these failures are both common and, in many instances, avoidable. Some of the usual suspects include: (1) the lack of clearly defined scope of work and responsibilities; (2) failure to prepare and follow comprehensive job specifications; (3) lack of proper coordination for passivation and start-up; (4) failing to understand and coordinate responsibilities after turnover; and (5) lack of proper documentation leaving you susceptible to a “red-light swearing contest.” This publication identifies common scenarios and offers suggestions to manage risk.
A Solid Isothiazolone Biocide Controls Microbial Growth In Industrial Water Treatment Systems Brian Corbin, The Dow Chemical Company 2016
Abstract: Isothiazolone biocides have been used effectively for decades to control microbial growth in a variety of industrial water treatment applications. The most frequently used product is a 3:1 ratio of 5-Chloro-2-Methyl-4-Isothiazolin-3- one (CMIT) and 2-Methyl-4-Isothiazolin-3-one (MIT). Typically CMIT/MIT is dosed into cooling systems as a liquid, but a novel solid version was recently developed. The CMIT/MIT solid is safer to handle and easier to transport that liquid biocide formulations. We report efficacy of CMIT/MIT against microorganisms, including Legionella, biofilm-formers and sulfate-reducers. The basic characteristics of the new solid tablet will be discussed based off of laboratory and field trials.
Predicting Time To Clean: Avoid Unscheduled Outages And Extend Asset Life Through Operational And Chemistry Modelling, Monitoring, and Optimization Edward S. Beardwood, Solenis LLC 2016
Abstract: There has been a shift in industrial economic philosophy to risk-based maintenance, which comes with inherent hazards of pushing plant equipment to unscheduled downtime associated with extensive fouling and/or failure. Methods have been developed to avoid such pitfalls. Modeling and optimization of heat exchanger operational conditions and cooling water chemistry resulted in findings to improve heat exchanger fouling ruin rates, eliminate the scheduled need for bundle cleaning, and increase the life of equipment. The method processes will be illustrated, as well as laboratory findings and field case studies that document marked improvements.

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