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Aerobic Wastewater Treatment Processes: History and Development discusses the widely differing influences on the development of aerobic treatment such as water supply, toxic trade effluents, microscopy and population growth in urban areas. It covers the historical development of sewage treatment and the emergence of aerobic biological treatment from the early nineteenth century to the present day.
The importance of water supply and the influence this had on the water-carriage system is examined, as is the consequent discharge of sewage into rivers. The factors which govern process selection and process development are discussed. There is a continued impetus to reduce land area, capital costs, running costs, and to optimise performance and process control.
The discovery of the activated sludge process is detailed including the development, in the early 1900s, of many forms of this process. Industrial wastes were discharged to biological treatment systems and the impact of such pollutants is reviewed. The work of Royal Commissions, River Boards and the National Rivers Authority is summarised, and the advances in chemical analysis and "on-line" measurement of chemical quality characteristics.
Later developments such as reed beds and the use of hybrid treatment systems are covered. Examples are included such as the "fixed film" activated sludge process which has found application for small communities in package form, and also for large-scale municipal treatment plants.
Aerobic Wastewater Treatment Processes: History and Development is valuable reading for students of the following courses on CIWEM Dip examination, WITA and B Tech and Environmental Science and Civil Engineering.a
- Introduction
- Water Supply
- The Water Carriage System
- Land Treatment of Sewage
- Contact Beds and Biological Filters
- Activated Sludge
- Later Developments
- Influences upon Sewage Treatment
- Process Development and Selection
- Conclusions
David Tilley, has had many years of experience in sewage treatment, trade effluents and the water industry generally. He began his working life in 1962 in the City Analyst Laboratories, Coventry Corporation, and was later appointed Assistant Chemist, Sewage and Trade Wastes. He then gained a post in the field of trade effluent control, first in Coventry and then for Avon Division of Severn Trent Water Authority. He has been employed in various capacities within the Severn Trent Water Authority, later Severn Trent Water plc, until 1992. In 1993 he gained the post of Principal Consultant with Environmental Management Associates Ltd (EMA Ltd), an independent consultancy specialising in sewage treatment, industrial wastewater treatment and water related issues. EMA Ltd have undertaken a wide range of assignments for both private and public sector interests in the UK, Europe and North Africa. David Tilley is a qualified professional and holds a post-graduate research degree of Master of Philosophy and a Diploma in Water and Environmental Management. He is also a Fellow of the Chartered Institute of Water and Environmental Management, a Fellow of the Royal Society of Health and a member of the European Water Pollution Control Association.
