Author: D. J. Lee
Publisher: IWA Publishing (International Water Assoc)
ISBN:
Category : Science
Languages : en
Pages : 388
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Book Description
Sludge management is a major concern worldwide: with continuing population growth and economic development the sludges generated in the course of water and wastewater treatment processes (municipal and industrial) are simultaneously a challenging problem in waste management and a potentially valuable recyclable resource. Around the world increasingly stringent environmental regulation is changing the range of options available. Scientists and engineers are therefore focusing on techniques for effective solid-liquid separation, safe disposal, and possible routes for conversion to resources. The 52 papers selected for these proceedings deal with management practice; hazardous substances; characterisation and processing; sludge pretreatment; sludge digestion; land application; thermal treatment; sludge dewatering; sludge minimization; floc structure; sludge utilization; and conditioning and dewatering. These papers present the state of the art in sludge treatment, disposal and beneficial reuse and will form a highly valuable resource for both researchers and water industry practitioners.
Author:
Publisher:
ISBN:
Category : Hazardous wastes
Languages : en
Pages : 367
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Book Description
Author: Ludovico Spinosa
Publisher: IWA Publishing
ISBN: 9781900222082
Category : Science
Languages : en
Pages : 424
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Book Description
With the increased volume of sewage sludge generated as a result of extended sewerage and advanced wastewater treatments, its management is becoming of ever greater concern in both industrialised and emerging countries.During recent years there has been a worldwide movement toward a strategy of reusing and taking advantage of the energy content of residues, in particular of transforming a waste material produced by a treatment works (sludge) into a useful and usable product (biosolid). The selection of a use/disposal method or management system is often based on factors such as local traditions, personal experience, public opinion, etc., with less emphasis on the much more important technical factors, such as local geography, climate, land use, availability of disposal sites and regulatory constraints.Sludge into Biosolids gives up-to-date coverage of sludge treatments and of its use and disposal, focusing on the practical aspects of sludge/biosolids management. Operational variables and sludge properties affecting each management operation are discussed.Sludge into Biosolids provides a comprehensive overview for practitioners, graduates and researchers as well as politicians, decision-makers and public administrators, not only of the different options for using/disposing of sewage sludge and the requirements to be met for each of them, but also of the different methods for processing sewage sludge in order to modify its physical, chemical and biological properties, to meet the requirements for its utilization.ContentsPart I: Sludge Production and CharacterizationPart II:Options for Biosolids Utilization and Sludge Disposal Part III: Treatments and Operations
Author: Zaini Ujang
Publisher: IWA Publishing
ISBN: 1843390302
Category : Science
Languages : en
Pages : 364
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Book Description
Municipal Wastewater Management in Developing Countries discusses various approaches to municipal wastewater management in order to protect both public health and the environment, with the major focus being on waterborne diseases. Developing countries can be divided into two main categories, i.e. countries in transition with higher growth rates where industrialisation and urbanisation are taking place rapidly, and countries with slower growth rates. It is important, therefore, that approaches should be tailor-made and site-specific. In general, the major trends of water pollution control have significantly contributed to the development of ?conventional sanitation? approaches in terms of legal and financial frameworks, as well as technological enhancement. Despite advances in the science, engineering and legal frameworks, 95 per cent of the wastewater in the world is released into the environment without treatment. Only five per cent of global wastewater is properly treated using the ?standard? sanitation facilities, mainly in developed countries. As a result, the majority of the world?s population is still exposed to waterborne diseases, and the quality of water resources has been rapidly degraded, particularly in poor developing countries. The challenge now is to provide the world?s population, especially the poor, with adequate water and sanitation facilities. Despite billions of dollars of investment spent every year, billions of poor people are still suffering and dying because of poor sanitation. At the beginning of this century, about 1.1 billion people lived without access to clean water (compared to about the same number in 1990), 2.4 billion without appropriate sanitation (compared to 2.3 billion in 1990) and four billion without sound wastewater disposal. The future scenario, that water resources will be further depleted by a growing world population, will be coupled with environmental degradation due to poor pollution control, particularly in most of the developing countries. In order to address the issue of water and wastewater management in developing countries it is necessary to take into consideration the segments of the society itself, particularly the types of housing areas. The segments will indicate the level of socio-economic, mentality and knowledge, which is important for any planned changes in their life style and social engineering. It is also important to segregate the funding framework of any proposed projects. High-income urban communities, for instance, are generally willing to pay for sewerage services and higher water supply tariffs, therefore a designated system can be accordingly provided. Over the past 10 years, serious criticism has been given to the ?conventional sanitation? approach, consequently many definitions, concepts and characteristics have been proposed on ?sustainable sanitation?. Sustainable sanitation is a relevant concept in order to achieve the Millennium Development Goals by 2015 of providing water supply and adequate sanitation for developing countries. Sustainable sanitation is flexible in approach any community ? poor or rich, urban or rural, water-rich or water-poor country ? and requires lower investment costs compared to conventional sanitation approaches. It is also important to note that the framework of sustainable sanitation is much easier to adopt in developing countries where water supply and sanitation infrastructures are still in the developing stages. In some developing countries, no public facilities are available therefore it is an ideal condition to start a new infrastructure with a new framework. This comprehensive reference, prepared by leading international authorities, will provide an invaluable reference for all those concerned with the management of sanitation services in developing countries worldwide.
Author:
Publisher:
ISBN:
Category : Hazardous wastes
Languages : en
Pages : 0
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Book Description
Author: B. Jimenez
Publisher: IWA Publishing (International Water Assoc)
ISBN:
Category : Science
Languages : en
Pages : 332
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Book Description
The treatment, management, and application or disposal of sludge is currently a major problem all over the world. However, solutions vary from one region to another and must be based on the technical and economical capacities of each country. Thus this issue reflects the special emphasis put on knowing the characteristics of sludges and their differences according to whether they come from a developed or a developing country, or from one region or another. A broad range of sludge stabilisation techniques were considered, ranging from low-cost and easy-to-operate technologies, to highly technological and costly alternatives, with local circumstances in mind. Sludge minimisation processes focus on solutions that avoid the problems, but it is clear that there will always be sludge generation and thus beneficial reuse should still be encouraged. Land application in developed and developing countries is included to present the perception of this alternative under different scenarios, comparing, for example, the experiences in countries like France and the United States, with those of Brazil and Greece. Similar international comparisons are given of management and regulatory regimes. Alternative processes give a rapid vision of non-conventional options that may constitute an interesting approach to sludge reuse. with the intention of satisfying the needs in different parts of the world. From the high-quality programme of this conference 41 papers have been selected after peer review. They provide an authoritative and wide-ranging survey of the state of research and practice in sludge management that will be an essential source of information of worldwide value.
Author:
Publisher:
ISBN:
Category : Water quality management
Languages : en
Pages : 436
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Book Description
Author: Artur Pawlowski
Publisher: CRC Press
ISBN: 0415643384
Category : Science
Languages : en
Pages : 580
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Book Description
Environmental engineering has a leading role in the elimination of ecological threats, and deals, in brief, with securing technically the conditions which create a safe environment for mankind to live in. Due to its interdisciplinary character it can deal with a wide range of technical and technological problems. Since environmental engineering uses the knowledge of the basic sciences – biology, chemistry, biochemistry and physics – it is able to neutralise pollution in all the elements of the environment, i.e. the hydrosphere, atmosphere and lithosphere. Moreover, environmental engineering deals with the design and maintenance of systems of water supply, sewage disposal, heating, ventilation and air-conditioning in buildings. Environmental Engineering IV contains 77 peer reviewed papers selected from 527 presented at the 4th Congress of Environmental Engineering (Lublin, Poland, 2-5 September 2012). The contributions are divided into 7 chapters: • Water supply • Water and wastewater treatment • Neutralization of solid wastes and sludge • Air protection and quality • Indoor microclimate • Energy • Biology and technology Environmental Engineering IV assesses the state of scientific research in various areas of environmental engineering, evaluates the organizational, technical and technological progress made in contributing to ecological security, and determines the place of environmental engineering in sustainable development, taking into account current political and economic conditions, and is a valuable source of information for the environmental engineering professional and academic community.
Author: A.F. Ismail
Publisher: CRC Press
ISBN: 1315645777
Category : Science
Languages : en
Pages : 380
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Book Description
Realizing that water, energy and food are the three pillars to sustain the growth of human population in the future, this book deals with all the above aspects with particular emphasis on water and energy. In particular, the book addresses applications of membrane science and technology for water and wastewater treatment, energy and environment. Th
Author: Lucjan Pawlowski
Publisher: Springer Science & Business Media
ISBN: 9780306481819
Category : Science
Languages : en
Pages : 474
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Book Description
ENVIRONMENTAL ENGINEERING IN THE mSTORICAL PERSPECTIVE Lucjan Pawlowski Information bombarding the nowdays Man may suggest that the world is on the way to an ecological catastrophe. I do not disregard the dangers we are facing now, but I would like to remind that since the beginning ofexistence Man has been facing numerous threats of an ecological character. First, they were caused by natural phenomena, such as huge forest fires, floods, earth quakes, and later on, caused by the development ofour civilisation, Man who was becoming more and more powerful in his abilities started creating new, anthropogenic threats. We may look pessimistically at the development of our civilisation, having in mind the catastrophes caused by Man's activity; we may also look at the examples showing the development of knowledge and the skills derived from it, which enable the elimination ofthreats and, at the same time making Man's life richer. It is not possible to make an in-depth analysis of the phenomena mentioned above in a short opening speech of the Congress. Nevertheless, I would like to share with you an optimistic reflection. I think that we can observe two trends in the development of our civilisation - good alternates with evil, environmental threats with the hope for their overcoming, and events swing to both sides like a pendulum in a clock.
