How Nature Deals with Waste

The following sections are included:

• Introduction

  • The wastewater problem

  • Legislation

• Nature of Wastewater

  • Sources and variation in sewage flow

  • Composition of sewage

  • Other wastewaters

• Micro-organisms and Pollution Control

  • Nutritional classification

• Microbial Oxygen Demand

  • Self purification

  • Biochemical oxygen demand

    • The test

    • Methodology

    • Factors affecting the test

    • Sources of error

• Further reading