The Nalco Water Handbook [PDF]

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PRESENTACIÓN “The Nalco Water Handbook”



From the Preface A lot has changed in treating and conserving



Our industry section of the book takes a re-



water since we last updated this book. When



freshed look at how the various applications



we looked at the water treatment needs of to-



come together across many different indus-



day and the future, it became apparent that



tries, and the role water plays in the produc-



much of the book would need to be rewritten.



tion of consumer items, petroleum, synthetic



With that mindset, we evaluated the manner



fuels, metals, paper, and power to name a



in which we had presented the content in the



few. While these chapters will discuss water



past, and then made some improvements.



use inside each industry you will see that the water needs and requirements are vastly di-



We restructured the presentation of the book



fferent from industry to industry. The basic



so that it flows much like a water treatment



understanding of the particular applications



process. The Basic Water Chemistry section is



themselves is covered in the earlier chapters.



a broad discussion around the characteristics of water, the impurities we pay attention to in



We have made liberal use of tables, illustra-



treating water, and its basic availability. The



tion, photographs, and line drawings to help



Applications section of the book takes on water



place the discussion in context. The majority



treatment in sequence from the time it enters



of the graphics are new to this edition. The



your plant until the time it is discharged back



changes we have made to the content and the



to the environment. Each subsection groups



presentation should make this book valuable



content by subject matter as it pertains to re-



across a wide range of users such as the plant



moving impurities, use in steam and cooling



operators, engineering departments, process



systems, and then discharge. The section on



management, maintenance groups, and plant



Energy in Water Systems takes a broader look



mangers to name a few.



across not just steam, but cooling and wastewater as well. This section discusses energy



Daniel J. Flynn



conservation. We present various focus areas



Editor



in each of these chapters to help manage your energy input and outputs in these systems.



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From the Foreword The demand for usable fresh water has never



send the water back to the environment. Efforts



been greater in earth’s history - abundant in



to minimize fresh water use, particularly from



parts of the world, and increasingly scarce in



ground water, are increasing through a variety



others. Our global agriculture depends on an



of different methods, including water recycle,



annual fresh water supply sufficient to produce



water cascading, more effective contaminant



crops and livestock; our industries are powe-



removal, implementation of sophisticated che-



red by waters’ ability to convey heat; and each



mical feed and control equipment, and the use



of us depends on a daily intake of clean fresh



of innovative chemistry. The advancement and



water to help sustain life. As we become ever



use of these technologies helps run operations



more conscious of our role as good stewards



economically with a decreasing demand on the



of this precious resource, we look for different



basic fresh water resources, saving significant



methods to help us conserve, preserve, and



quantities in the process.



use responsibly, the water around us. Our third edition of The Nalco Water Handbook Since the beginning of the Nalco Company in



takes a close look at the ever-changing lands-



the late 1920s, Nalco has continually looked to



cape in treating water for various applications,



improve the quality of water for industrial use,



processes, and industries. The application of



and also for final discharge back to our envi-



the principles discussed within this book, will



ronment. Over these years industries have be-



help minimize water usage, maximize heat



come more and more demanding in the qua-



transfer, maintain clean equipment, lengthen



lity of water necessary for their process use.



asset life, and help reduce cost. Helping you



These changing requirements place an ever-



achieve your water treatment target is the



increasing need for the removal and control of



goal of this book. We trust you will find the



the contaminants found in water, allowing our



content informative, useful, and actionable.



processes to operate at peak performance and reliability. Regulations around the world tar-



J. Erik Fyrwald



geting pollutant discharge to the air, land, and



Chairman, President, and Chief Executive



water continue to tighten, governing how we



Officer



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