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Environmental Biotechnology
The past 30 years have seen the emergence of a growing desire worldwide that positive
actions be taken to restore and protect the environment from the degrading effects of all forms
of pollution – air, water, soil, and noise. Since pollution is a direct or indirect consequence of
waste production, the seemingly idealistic demand for “zero discharge” can be construed as
an unrealistic demand for zero waste. However, as long as waste continues to exist, we can
only attempt to abate the subsequent pollution by converting it to a less noxious form. Three
major questions usually arise when a particular type of pollution has been identified: (1) How
serious is the pollution? (2) Is the technology to abate it available? and (3) Do the costs of
abatement justify the degree of abatement achieved? This book is one of the volumes of the
Handbook of Environmental Engineering series. The principal intention of this series is to
help readers formulate answers to the last two questions above.
The traditional approach of applying tried-and-true solutions to specific pollution problems
has been a major contributing factor to the success of environmental engineering, and has
accounted in large measure for the establishment of a “methodology of pollution control.”
However, the realization of the ever-increasing complexity and interrelated nature of current
environmental problems renders it imperative that intelligent planning of pollution abatement
systems be undertaken. Prerequisite to such planning is an understanding of the performance,
potential, and limitations of the various methods of pollution abatement available for environmental
scientists and engineers. In this series of handbooks, we will review at a tutorial
level a broad spectrum of engineering systems (processes, operations, and methods) currently
being utilized, or of potential utility, for pollution abatement. We believe that the unified
interdisciplinary approach presented in these handbooks is a logical step in the evolution of
environmental engineering.
Treatment of the various engineering systems presented will show how an engineering
formulation of the subject flows naturally from the fundamental principles and theories
of chemistry, microbiology, physics, and mathematics. This emphasis on fundamental science
recognizes that engineering practice has in recent years become more firmly based
on scientific principles rather than on its earlier dependency on empirical accumulation of
facts. It is not intended, though, to neglect empiricism where such data lead quickly to the
most economic design; certain engineering systems are not readily amenable to fundamental
scientific analysis, and in these instances we have resorted to less science in favor of more art
and empiricism.
Since an environmental engineer must understand science within the context of application,
we first present the development of the scientific basis of a particular subject, followed by
exposition of the pertinent design concepts and operations, and detailed explanations of their
applications to environmental quality control or remediation. Throughout the series, methods
of practical design and calculation are illustrated by numerical examples. These examples
clearly demonstrate how organized, analytical reasoning leads to the most direct and clear
solutions. Wherever possible, pertinent cost data have been provided.
The goals of the Handbook of Environmental Engineering series are: (1) to cover entire
environmental fields, including air and noise pollution control, solid waste processing and
resource recovery, physicochemical treatment processes, biological treatment processes,
biosolids management, water resources, natural control processes, radioactive waste disposal,
and thermal pollution control; and (2) to employ a multimedia approach to environmental
pollution control since air, water, soil, and energy are all interrelated.
As can be seen from the above handbook coverage, no consideration is given to pollution
by the type of industry, or to the abatement of specific pollutants. Rather, the organization of
the handbook series has been based on the three basic forms in which pollutants and waste
are manifested: gas, solid, and liquid. In addition, noise pollution control is included in the
handbook series.
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