The text includes both in-depth reviews of established techniques and demonstrates how these can be used to maximum potential, and critical appraisals of new techniques and their relevance to present day treatment problems. The reader is presented with a wide range of options for the management of specific problems - from upgrading present plant and strategy to the introduction of new equipment and techniques. The text adopts a practical and simple approach to effective problem solving and case histories are included to help the decision making process.