Water Science and Technology (4^th Ed.)
An Introduction

Water has become one of the most important issues of our time intertwined with global warming and population expansion. The management of water supplies and the conservation of water resources remains one of the most challenging yet exciting issues of our time. Water and wastewater treatment technologies are constantly evolving creating an increasingly sustainable industry that is one of the world's largest and most interdisciplinary sectors, employing chemists, microbiologists, botanists, zoologists as well as engineers, computer specialists and a range of different management professionals.

This accessible student textbook introduces the reader to the key concepts of water science and technology by explaining the fundamentals of hydrobiology, aquatic ecosystems, water treatment and supply, wastewater treatment and integrated catchment management. This fourth edition is extensively changed throughout, with new coverage of the effects of climate change, environmental assessment, sustainability and the threat to biodiversity.

The text serves as a primer for both undergraduate and graduate students in either science or engineering who have an interested in freshwater biology/hydrobiology or environmental engineering. It is also useful as a unified transitional course for those who want to span the traditional areas of engineering, biology, chemistry, microbiology or business. Professionals and consultants will also find the book a useful reference.

Preface

Acknowledgment

Author

PART I

Water resources and ecology

1 Water resources and demand

2 Factors determining the distribution of animals and plants in freshwaters

3 Basic aquatic ecosystems

4 Microorganisms in pollution control

5 Water pollution

PART II

Water quality management and assessment

6 Water basin management

7 Water quality and regulation

8 Water quality assessment

PART III

Pollution control

9 Nature of wastewater

10 Introduction to wastewater treatment

11 Activated sludge

12 Fixed-film systems

13 Natural treatment systems

14 Anaerobic processes

15 Sludge treatment and disposal

16 On-site and small-scale treatment systems

PART IV

Drinking water treatment and supply

17 Water treatment and distribution

18 Physico-chemical treatment processes

19 Drinking water contamination

20 Pathogens and their removal

PART V

Sustainability

21 Sustainability principles in water management

Index

Nick Gray is Director of the Trinity Centre for the Environment at Trinity College Dublin. He has worked primarily in the area of biological wastewater treatment for thirty years, working mainly on full-scale treatment systems, especially the design and operation of reactor processes.