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| 2006 CONFERENCE ABSTRACTS |
| Pretreatment - Multi Media Filtration |
| By Dave Walker of Avista Technologies |
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| Effective pretreatment is one of the most important factors in achieving the most efficient operation of downstream reverse osmosis systems. Pretreatment equipment may include multimedia filtration (MMF) which, when properly designed, can be extremely effective in removing particulate and organic material from the RO feed water. The efficiency of the MMF has a direct impact on the performance of the downstream RO. Mr. Walker’s presentation will provide an overview of the more important aspects of multimedia filtration design and operation. |
| Review of Membrane Technology Treatment of Industrial Water and Wastewater |
| By John C. McArdle of Koch Membrane |
| This session will provide a general review of the different types of membranes and membrane product configurations that are used for industrial water and wastewater treatment. The types of membranes that will be reviewed include reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), and microfiltration (MF). Membrane product configurations include tubes, hollow-fibers and spirals. Submerged hollow-fiber membranes will be presented as a separate membrane configuration, specifically as related to their application in membrane bioreactors. Further into the session, the specific applications of membrane technology for the production of high purity water in the power, bottling, microelectronics, and pharmaceutical industries will be reviewed and compared to conventional chemical and physical processes. Typical membrane system operating conditions and performance will be presented in several case studies. |
| By Gaspar Lesznik of Ozonia |
| The presentation is intended to teach fundamentals of the ozonation process and provide.a broad overview of ozone use in UPW applications. The presentation will begin with basic ozone chemistry and how ozone works as a biocide compared to other disinfectants. Commercial methods of generating ozone are discussed and compared including state-of-the-art in-situ generation of ozone by UPW electrolysis. Various engineering aspects for UPW use are discussed including proper ozone contacting and injection methods, monitoring, destruction in gas and water, materials of construction and safety concerns. |
| Granular Activated Carbon Functions and Designs |
| By Chubb Michaud of Systematix Co |
A clean carbon surface, such as that of GAC, is hydrophobic (water-hating) AND oleophilic.(oil-loving). Coupled with a surface area of over 1000 sq meters/gram and a pore structure that provide easy access to that surface area, GAC has all the makings of a great adsorptive media for removing dissolved organics from water.
One of the keys in using GAC is matching the properties of the GAC to the job at hand. This presentation will review the properties of GAC and compare operational variables and designs for optimization.
The goal of this presentation is to familiarize the participant with the properties of GAC and how those properties impact performance. Knowing how GAC functions will create a better understanding of its uses and limitations. |
| The Keys to Water System Sanitization Success |
| By T.C. Soli of Soli Pharma Solutions |
| Most high purity water systems eventually have issues with microbial control. Choosing an appropriate sanitization frequency, as well as the right sanitant treatment, has everything to.do with sanitization success. The scope of this presentation is focused on the sanitization of.distribution systems associated with a high purity system, but the principals can be applied to the purification components, tanks and piping which also suffer from biofilm growth that can compromise their functionality. This presentation will discuss the following subjects: |
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Limitations imposed by the materials of construction on sanitant choices. |
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How water system microorganisms grow. |
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Continuous versus intermittent sanitization. |
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The importance of penetrating, killing and removing biofilm. |
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How various sanitants work (or don’t work) at killing and removing biofilm. |
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Symptoms of ineffective sanitization versus re-inoculation. |
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Advantages of frequent over infrequent sanitization – when to sanitize. |
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