Download or read book Anaerobic Treatment of Domestic Sewage with a Two step Uasr Uasb System written by Yehuda Miron and published by . This book was released on 1997 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anaerobic Sewage Treatment written by Jeroen van der Lubbe and published by IWA Publishing. This book was released on 2019-08-15 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic Sewage Treatment: Optimization of Process and Physical Design of Anaerobic and Complementary Processes focuses on process design and deals with start-up procedures and steady state performance of UASB reactors, as well as the influence of operation on reactor performance.
Download or read book Anaerobic Treatment of Municipal Wastewater in a UASB Digester System written by and published by . This book was released on 2016 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anaerobic Biotechnology and Odor corrosion Control for Municipalities and Industries written by Richard E. Speece and published by R.E. Speece. This book was released on 2008-01-01 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anaerobic Municipal Wastewater Treatment Comparison and Assessment of Different Design Approaches for UASB Reactors written by Felipe Teixeira de Carvalho and published by diplom.de. This book was released on 2014-04-11 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inhaltsangabe:Introduction: It is well known that freshwater is finite and an indispensable resource for any living organism on Earth. Inappropriately, during the last decades, anthropogenic activities expansion, in parallel with population growth, has been the main cause of the deterioration of water quality. According to UNESCO the world s population is growing nearby 80 million people each year, which suggests an increasing of freshwater demand of about 64 billion m3 a year. Likewise, the demographic estimations indicate that 90% of the 3 billion people, who are expected to be added to the world population in 2050, will be living in developing countries, mainly in regions that are already by this time in water stress. However, in order to relate the increasing demand for water, not only the demographic aspect should be taken into account but also economic and social aspects must be considered. The economic expansion affects water since there is an increase in the number of consumers as well as modifications in their consumption habits, in a way that services are offered, goods are produced and transported. The social aspect points out to individual rather than collective actions mainly considering poverty, education, culture, lifestyle and consumption patterns. Obviously the demand and the importance for satisfactory sanitation conditions become indispensable. The World Health Organization (WHO) and The United Nations Children's Fund (UNICEF) report that 2.5 billion people still have a lack of access to improved sanitation, including 1.2 billion people who have no facilities at all. While in developed areas the sanitation coverage achieves 99%, in developing regions this number is around 53%. Furthermore, in Latin America and the Caribbean the coverage sanitation is approximately 79%. In Brazil, target area of this study, only 55.2% of the municipalities are covered by a sewage collection system. In this manner, coverage sanitation does not mean necessarily that the wastewater is treated. Hence, the wastewater must be followed by a treatment system (removal of physical, chemical and biological compounds) in order to achieve pollution mitigation targets for the environmental quality and human health and welfare. According to UNESCO more than 80% of the domestic wastewater in developing countries is discharged untreated, polluting rivers, lakes and coastal areas. Therefore, a large number of technologies have been developed with the intention [...]
Download or read book Current Advances in Anaerobic Digestion Technology written by Marcell Nikolausz and published by MDPI. This book was released on 2021-03-17 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic digestion (AD) is one of the oldest biotechnological processes and originally referred to biomass degradation under anoxic conditions in both natural and engineered systems. It has been used for decades to treat various waste streams and to produce methane-rich biogas as an important energy carrier, and it has become a major player in electrical power production. AD is a popular, mature technology, and our knowledge about the influencing process parameters as well as about the diverse microbial communities involved in the process has increased dramatically over the last few decades. To avoid competition with food and feed production, the AD feedstock spectrum has constantly been extended to waste products either rich in recalcitrant lignocellulose or containing inhibitory substances such as ammonia, which requires application of various pre-treatments or specific management of the microbial resources. Extending the definition of AD, it can also convert gases rich in hydrogen and carbon dioxide into methane that can substitute natural gas, which opens new opportunities by a direct link to traditional petrochemistry. Furthermore, AD can be coupled with emerging biotechnological applications, such as microbial electrochemical technologies or the production of medium-chain fatty acids by anaerobic fermentation. Ultimately, because of the wide range of applications, AD is still a very vital field in science. This Special Issue highlights some key topics of this research field.
Download or read book Efficient Management of Wastewater written by Ismail Al Baz and published by Springer Science & Business Media. This book was released on 2008-01-12 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water reuse management is one of the challenges all water scarce countries have to deal with in the coming decades. The present book highlights non-conventional solutions within the field of wastewater treatment and reuse predominantly for professionals and decision makers. It focuses on technologies which are reliable, sustainable, low cost and suitable for rural and sub urban areas. In addition, particularly innovative on-site concepts are presented.
Download or read book Anaerobic Reactors written by Carlos Augustos de Lemos Chernicharo and published by IWA Publishing. This book was released on 2007-03-30 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic Reactors is the forth volume in the series Biological Wastewater Treatment. The fundamentals of anaerobic treatment are presented in detail, including its applicability, microbiology, biochemistry and main reactor configurations. Two reactor types are analysed in more detail, namely anaerobic filters and especially UASB (upflow anaerobic sludge blanket) reactors. Particular attention is also devoted to the post-treatment of the effluents from the anaerobic reactors. The book presents in a clear and informative way the main concepts, working principles, expected removal efficiencies, design criteria, design examples, construction aspects and operational guidelines for anaerobic reactors. About the series: The series is based on a highly acclaimed set of best selling textbooks. This international version is comprised by six textbooks giving a state-of-the-art presentation of the science and technology of biological wastewater treatment. Other titles in the series are: Volume 1: Waste Stabilisation Ponds; Volume 2: Basic Principles of Wastewater Treatment; Volume 3: Waste Stabilization Ponds; Volume 5: Activated Sludge and Aerobic Biofilm Reactors; Volume 6: Sludge Treatment and Disposal
Download or read book Decentralised Sanitation and Reuse written by Piet Lens and published by IWA Publishing. This book was released on 2001-03-01 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adopting a multi-disciplinary approach, Decentralised Sanitation and Reuse places public sanitation in a global context and provides a definitive discussion of current state-of-the-art sanitation technologies. It shows how these technologies can be implemented to integrate domestic waste and wastewater treatment in order to maximize resource recycling in domestic practice. Decentralised Sanitation and Reuse presents technical solutions for on-site collection and transport of concentrated waste streams, and focuses on the compromise between reliability and minimal water wastage. A whole range of available sustainable technologies, both low and high-tech, to treat concentrated (black water) and diluted (grey water) streams are addressed in detail from the fundamental scientific and engineering points of view. Sociological, economic and, particularly, environmental and public health aspects are essential issues within this book. The necessity of new infrastructure implementation and the resulting challenges for a good number of economic branches are illustrated with examples from architecture and town planning. Decentralised Sanitation and Reuse will be an invaluable resource for a wide academic and professional readership active in the fields of environmental protection and public sanitation. Contents The DESAR concept for environmental protection Waste and wastewater characteristics and its collection on the site Technological aspects of DESAR Environmental and public health aspects of DESAR Sociological and economic aspects of DESAR Architectural and urbanistic aspects of DESAR
Download or read book A comparative evaluation of anaerobic treatment of low strength wastewaters at mesophilic and psychrophilic temperatures written by Çiğdem Yangın Gömeç and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Besides, dominant microbial communities in two lab-scale UASB reactors operated at mesophilic (35± 2 0C) and psychrophilic ( 10± 1 0C) temperatures and fed with synthetic domestic wastewater and raw domestic sewage were identified by FISH technique in combination with Confocal Scanning Laser Microscopy (CSLM). The variation in microbial diversity and alteration in granular structure were also investigated. Thus, in addition to classical operational parameters, process performances ofboth high rate anaerobic reactors treating low strength wastewater at different temperatures were evaluated by investigating the variations in microbial diversity . Results indicated around 82% average total chemical oxygen demand (CODtoJ removal at around 1 1 0C (psychrophilic) at an organic loading rate (OLR) of 2 kgCOD/m3.day while at the same OLR around 90% average CODtot removal was observed at 35°C (mesophilic) in synthetic sewage treatment. On the other hand, average CODtot removals were obtained as 49% and 35% for the mesophilic and psychrophilic UASB reactors treating raw domestic sewage, respectively at an OLR around 0. 7 kgCOD/m3.day. Low removal efficiencies during raw domestic sewage treatment could be due to high amounts of sea water additions into the sewerage system that caused dilute influent concentrations during sampling periods. Results also indicated that the use of 16S rRNA-targeted probes, was well suited to the study of the microbial ecology in anaerobic treatment systems and Methanosaeta were found as the dominant species in both types of granules.
Download or read book Treatment Characteristics of Two Phase Anaerobic System Using an UASB Reactor written by Elsa Dolores Chacin Ramos and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anaerobic Sewage Treatment written by Adrianus C. Van Haandel and published by . This book was released on 1994 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes sewage treatment in the Upflow Anaerobic Sludge Blanket (UASB) digester, a new treatment process developed by Professor Lettinga of Agricultural University of Wageningen. Suitable for sewage treatment in tropical and subtropical regions, the UASB has, in the past, been used mostly for treating medium and high strength industrial waste.
Download or read book A Study of the Applicability of Small scale Upflow Anaerobic Sludge Blanket UASB Domestic Wastewater Treatment Systems for Use in Rural and Developing Areas written by Morgan Leon Kessler and published by . This book was released on 2004 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Innovative Wastewater Treatment Resource Recovery Technologies Impacts on Energy Economy and Environment written by Juan M. Lema and published by IWA Publishing. This book was released on 2017-06-15 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the 3R concept applied to wastewater treatment and resource recovery under a double perspective. Firstly, it deals with innovative technologies leading to: Reducing energy requirements, space and impacts; Reusing water and sludge of sufficient quality; and Recovering resources such as energy, nutrients, metals and chemicals, including biopolymers. Besides targeting effective C,N&P removal, other issues such as organic micropollutants, gases and odours emissions are considered. Most of the technologies analysed have been tested at pilot- or at full-scale. Tools and methods for their Economic, Environmental, Legal and Social impact assessment are described. The 3R concept is also applied to Innovative Processes design, considering different levels of innovation: Retrofitting, where novel units are included in more conventional processes; Re-Thinking, which implies a substantial flowsheet modification; and Re-Imagining, with completely new conceptions. Tools are presented for Modelling, Optimising and Selecting the most suitable plant layout for each particular scenario from a holistic technical, economic and environmental point of view.
Download or read book ANAEROBIC AEROBIC TREATMENT OF DOMESTIC SEWAGE written by and published by . This book was released on 2009 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Domestic wastewater is the most abundant type of wastewater. Direct discharge of untreated domestic wastewater has environmental and public health risks due to the presence of organics, nutrients and pathogens. Application of anaerobic processes for the treatment of domestic sewage, which at present is largely treated by aerobic processes, has drawn considerable attention recently. Anaerobic processes can be applied for the removal of organic matter (methanogenesis) and nitrogen (anaerobic ammonium oxidation (Anammox)). The toxicity of fluoride to methanogenesis was investigated. The results indicate that acetoclastic were more susceptible to fluoride than hydrogenotrophic methanogens. The concentration of fluoride causing 50% inhibition (IC50) to acetoclastic ranged from 18.1 to 155.7 mg L-1 while for hydrogenotrophic methanogens was>400.0 mg L-1. The feasibility of a combined system consisting of anaerobic up-flow anaerobic sludge blanket (UASB) followed by aerobic activated sludge (AS) reactor for removal of carbonaceous and nitrogenous contaminants from strong synthetic sewage (2.5 g chemical oxygen demand (COD) L-1) was also studied. The average combined removal of total COD, volatile fatty acids (VFA) and protein was higher than 89.0%, 99.0% and 97.0%; respectively. Extensive nitrification (96.0%) was observed when dissolved oxygen (DO) concentration was>2.0 mg L-1. In contrast, only partial nitrification occurred when the AS received high organic loads and/or the DO level was below 2.0 mg L-1. The inhibitory effect of nitrite and nitrate on methanogenesis was evaluated. Methanogenic activity was inhibited by the presence of NOx- compounds (i.e., nitrite and nitrate). The inhibition imparted by nitrate was not due to the nitrate itself, but rather to its reduced intermediate, nitrite. The toxicity of NOx- to methanogens was found to be reversible after all the NOx- were reduced during denitrification. Moreover, the development of Anammox enrichment cultures was evaluated. Anammox cultures were successfully developed using sludge samples collected from municipal wastewater treatment plants (WWTPs) as inocula but not from methanogenic granular sludges. Return activated sludge (RAS) collected from WWTP operating for biological nitrogen removal had the highest intrinsic level of Anammox activity. RAS Anammox culture was developed rapidly within 40 days with a doubling time of 6.8 days.
Download or read book Biological Wastewater Treatment written by Mogens Henze and published by IWA Publishing (International Water Assoc). This book was released on 1881 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Anaerobic Reactors for Sewage Treatment Design construction and operation written by Carlos Augusto de Lemos Chernicharo and published by IWA Publishing. This book was released on 2019-07-15 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anaerobic sewage treatment using UASB reactors has significantly expanded in the last few decades and is now a consolidated technology in some warm climate regions. Several advantages of the anaerobic process make it a more sustainable option for sewage treatment. However, there are still important constraints related to design, construction, and operation of UASB reactors. Conversely, there is enough knowledge, experience, and proven technology that can be used to effectively tackle all the related drawbacks. This book delivers the most relevant techno-scientific developments from academia and water authorities, comprehensively addressing the main aspects of interest in design, construction, and operation of UASB reactors for sewage treatment. Special attention is given to the proper and integrated management of sludge, scum, gaseous emissions, energy recovery, and effluent quality. The main purpose is to provide information and share experiences not yet compiled in the specialized literature on anaerobic sewage treatment. Therefore, a sequence of 12 well-interconnected chapters consolidates the practical knowledge and experiences that important research groups and recognized professionals worldwide have acquired over the past 20 years in demo- and full-scale anaerobic-based sewage treatment plants. Anaerobic Reactors for Sewage Treatment: Design, Construction and Operation can significantly contribute towards a responsible expansion of the anaerobic technology in the world. The book is a valuable tool for engineers, constructors, operators, wastewater utility managers, as well as for students interested in anaerobic processes for sewage treatment.
