Bacterial biofilms are formed by communities that are embedded in a self-produced matrix of extracellular polymeric substances (EPS). Importantly, bacteria in biofilms exhibit a set of 'emergent properties' that differ substantially from free-living bacterial cells. In this Review, we consider the fundamental role of the biofilm matrix in establishing the emergent properties of biofilms, describing how the characteristic features of biofilms - such as social cooperation, resource capture and enhanced survival of exposure to antimicrobials - all rely on the structural and functional properties of the matrix. Finally, we highlight the value of an ecological perspective in the study of the emergent properties of biofilms, which enables an appreciation of the ecological success of biofilms as habitat formers and, more generally, as a bacterial lifestyle.

Biofilms: an emergent form of bacterial life.

Principles and potential of the anaerobic digestion of waste-activated sludge

The IWA Anaerobic Digestion Model No 1 (ADM1)

http://www.bashanfoundation.org/gmaweb/pdfs/P-removal.pdf

Recent advances in removing phosphorus from wastewater and its future use as fertilizer (1997-2003).

During the last 30 years, environmental issues about the chemical and biological contaminations of water have become a major concern for society, public authorities and the industry. Most domestic and industrial activities produce wastewaters containing undesirable toxic contaminants. In this context, a constant effort must be made to protect water resources. Current wastewater treatment methods involve a combination of physical, chemical and biological processes, and operations to remove insoluble particles and soluble contaminants from effluents. This article provides an overview of methods for wastewater treatment, and describes the advantages and disadvantages of available technologies.

/pdf/advantages-and-disadvantages-of-techniques-used-for-4u1wjxrt3o.pdf

Advantages and disadvantages of techniques used for wastewater treatment

Activated sludge model No. 3

This book has been produced to give a total overview of the Activated Sludge Model (ASM) family at the start of 2000 and to give the reader easy access to the different models in their original versions. It thus presents ASM1, ASM2, ASM2d and ASM3 together for the first time.

Modelling of activated sludge processes has become a common part of the design and operation of wastewater treatment plants. Today models are being used in design, control, teaching and research.

Contents 

This title belongs to Scientific and Technical Report Series 

ISBN: 9781900222242 (Print)

ISBN: 9781780402369 (eBook)

Activated sludge models ASM1, ASM2, ASM2d and ASM3 (in Japaneese)

Activated sludge models ASM1, ASM2, ASM2d and ASM3

This book gives a detailed presentation of the theories behind modern wastewater treatment processes. It reflects the new theories for wastewater characterization, process description and modeling, which has been developed internationally during the last 10 years. The information intensity is unique due to the large amount of figures, tables and examples. Together with a detailed subject index, they help the reader understand the theories so that the book can serve at the same time as an advanced textbook for graduate students and a handbook for professionals. Consulting companies will find the book useful as a reference and standard for dealing with wastewater treatment processes at an advanced international level.

Wastewater Treatment: Biological and Chemical Processes

For information on the online course in Biological Wastewater Treatment from UNESCO-IHE, visit: http://www.iwapublishing.co.uk/books/biological-wastewater-treatment-online-course-principles-modeling-and-design Over the past twenty years, the knowledge and understanding of wastewater treatment have advanced extensively and moved away from empirically-based approaches to a first principles approach embracing chemistry, microbiology, physical and bioprocess engineering, and mathematics. Many of these advances have matured to the degree that they have been codified into mathematical models for simulation with computers. For a new generation of young scientists and engineers entering the wastewater treatment profession, the quantity, complexity and diversity of these new developments can be overwhelming, particularly in developing countries where access is not readily available to advanced level tertiary education courses in wastewater treatment. Biological Wastewater Treatment addresses this deficiency. It assembles and integrates the postgraduate course material of a dozen or so professors from research groups around the world that have made significant contributions to the advances in wastewater treatment. The book forms part of an internet-based curriculum in biological wastewater treatment which also includes: * Summarized lecture handouts of the topics covered in book * Filmed lectures by the author professors * Tutorial exercises for students self-learning Upon completion of this curriculum the modern approach of modelling and simulation to wastewater treatment plant design and operation, be it activated sludge, biological nitrogen and phosphorus removal, secondary settling tanks or biofilm systems, can be embraced with deeper insight, advanced knowledge and greater confidence.

/pdf/biological-wastewater-treatment-principles-modelling-and-3lydgbms80.pdf

Mogens Henze

Papers

Activated sludge model No. 3

Activated sludge models ASM1, ASM2, ASM2d and ASM3 (in Japaneese)

Activated sludge models ASM1, ASM2, ASM2d and ASM3

Wastewater Treatment: Biological and Chemical Processes

Biological Wastewater Treatment: Principles, Modelling and Design