Introduction to Environmental Science Powerpoint Lecture. This Powerpoint presentation is designed for the first meeting of a survey-level Introduction to Environmental Science course. Introduction to Environmental Science Powerpoint Lecture. This Powerpoint presentation is designed for the first meeting of a survey-level Introduction to Environmental Science course. The lecture briefly covers many of the fundamental ideas and issues behind the discipline and serves as a good preview for the material covered in the rest of.
Book Preface
Workers in environmental health and in environmental protection who have had experience with environmental sanitation and engineering problems have noted the need for a book that is comprehensive in its scope and more directly applicable to conditions actually encountered in practice. Many standard texts adequately cover the specialized aspects of environmental health, engineering, and sanitation, but little detailed information is available in one volume dealing with the urban, suburban, and rural environment and community.
In this text emphasis is placed on the practical application of sanitary science and engineering theory and principles to comprehensive environmental control. This is necessary if available knowledge is to benefit humans now and in future generations without transferring an environmental problem from one media (air, water, or land) to another. In addition, and in deliberate contrast to complement other texts, empirical formulas, rule of thumb, experience, and good practice are identified and applied when possible to illustrate the ‘‘best’’ possible solution under the particular circumstances. It must be recognized, however, that knowledge and conditions change and that this may be hazardous when blindly applied by the practitioner. It is sincerely hoped, however, that individual ingenuity and investigation will not be stifled by such practicality but will be challenged and stimulated to always consider new developments and alternatives.*
A special effort was made to include general design, construction, maintenance, and operation details as they relate to plants and structures. Examples and drawings are used freely to help in the understanding and use of the subject matter. The reader is referred to the references and bibliography in each chapter for more information on complex designs and problems that are beyond the scope of this text.
Since the field is a very broad one, the following subjects are specifically covered in this new revised edition:
1. control of communicable and certain noninfectious diseases, 2. environmental engineering planning and impact analysis, 3. water supply, 4. wastewater treatment and disposal, 5. solid waste management, 6. air pollution and noise control, 7. radiation uses and protection, 8. food protection, 9. recreation areas and temporary residences, 10. the residential and institutional environment, 11. environmental emergencies and environmental preparedness, and 12. soil and groundwater remediation.
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Book Preface
The third edition of Introduction to Environmental Engineering continues to have two unifying themes: material balances and environmental ethics. It also adds more information regarding sustainability, an increasingly important component of engineering practice and intricately intertwined with the two unifying themes.
Part One opens with a brief look at the history and future of environmental engineering and then provides examples of the complex issues that surround identifying and solving environmental problems. It continues by introducing various tools engineers use in making decisions, including technology, benefit/cost, risk, and ethics. The discussion on ethics is brief, serving merely as an introduction to some of the value-laden problems engineers face and providing some background for the discussions throughout the text, but it suggests that ethical decision making is just as important in engineering as technical decision making.
Environmental Science
Part Two opens with a review of and introduction to basic concepts: dimensions and units, density, concentration, flow rate, retention time, and approximations. This material leads directly to the introduction of material balances, a theme used throughout the book. The discussion of reactions is similar to what would be covered in an introductory physical chemistry or biochemical engineering course and is followed by ideal reactor theory, similar to material found in a chemical engineering unit operations course but at a level readily understood by freshmen engineering students. The mass balance approach is then applied to energy flow. This part concludes with the recognition that some of the most fascinating reactions occur in ecosystems, and ecosystems are described using the mass balance approach and the reaction kinetics introduced earlier.
Part Three applies the fundamental concepts covered in Part Two to the major areas of environmental engineering. It begins with the quest for clean water. When is water clean enough, and how do we measure water quality characteristics? This discussion is followed by an introduction to water supply and treatment and then wastewater treatment. Because meteorology determines the motion of air pollutants, this topic introduces the section on air pollution. The types and sources of air pollutants of concern are discussed, concluding with the evolution of air quality standards, treatment of emissions, and the dispersion of pollutants. The management of municipal solid waste and hazardous waste are discussed with an emphasis on the need to prevent their generation. Noise pollution is then introduced. The book concludes with an evaluation of the motivations for pursuing green engineering.
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