Download or read book Autotrophic Nitrogen Removal from Low Concentrated Effluents written by Javier Adrián Sánchez Guillén and published by CRC Press. This book was released on 2017-03-16 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: On a global scale, sewage represents the main point-source of water pollution and is also the predominant source of nitrogen contamination in urban regions. The present research is focused on the study of the main challenges that need to be addressed in order to achieve a successful inorganic nitrogen post-treatment of anaerobic effluents in the mainstream. The post-treatment is based on autotrophic nitrogen removal. The challenges are classified in terms of operational features and system configuration, namely: (i) the short-term effects of organic carbon source, the COD/N ratio and the temperature on the autotrophic nitrogen removal; the results from this study confirms that the Anammox activity is strongly influenced by temperature, in spite of the COD source and COD/N ratios applied. (ii) The long-term performance of the Anammox process under low nitrogen sludge loading rate (NSLR) and moderate to low temperatures; it demonstrates that NSLR affects nitrogen removal efficiency, granular size and biomass concentration of the bioreactor. (iii) The Anammox cultivation in a closed sponge-bed trickling filter (CSTF) and (iv) the autotrophic nitrogen removal over nitrite in a sponge-bed trickling filter (STF). Both types of Anammox sponge-bed trickling filters offer a plane technology with good nitrogen removal efficiency.
Download or read book Autotrophic Nitrogen Removal from Low Concentrated Effluents written by Crc Pr I Llc and published by CRC Press. This book was released on 2017-09-14 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports the first systematic monitoring and modelling study on water availability, water quality and seawater intrusion of the Shatt al-Arab River (SAR) on the border of Iraq and Iran, where causes and concentration levels of salinity have not yet been fully understood, let alone addressed, leading to conflicting perceptions of its origin (external or internal), the natural conditions and the practices that can explain the current critical conditions. Current scientific knowledge on the SAR salinity problem is deficient, partially due to the complex and dynamic interaction between marine and terrestrial salinity sources, including return flows by water users of the different water sectors in the Euphrates and Tigris rivers upstream of the SAR. The development of a new series of monitoring stations and various modelling approaches helped to better understand the interactions between these different sources. The comprehensive and detailed dataset formed the basis for a validated analytical model that can predict the extent of seawater relative to other salinity sources in an estuary, and for a hydrodynamic model that can predict salinity changes. The adaptability of the models to changing conditions makes them directly applicable by water managers. The procedure can be applied to other comparable systems.
Download or read book Biological nitrogen removal from low carbon wastewater written by Chongjun Chen and published by Frontiers Media SA. This book was released on 2023-03-29 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bioelectrochemical Systems written by Korneel Rabaey and published by IWA Publishing. This book was released on 2009-12-01 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the context of wastewater treatment, Bioelectrochemical Systems (BESs) have gained considerable interest in the past few years, and several BES processes are on the brink of application to this area. This book, written by a large number of world experts in the different sub-topics, describes the different aspects and processes relevant to their development. Bioelectrochemical Systems (BESs) use micro-organisms to catalyze an oxidation and/or reduction reaction at an anodic and cathodic electrode respectively. Briefly, at an anode oxidation of organic and inorganic electron donors can occur. Prime examples of such electron donors are waste organics and sulfides. At the cathode, an electron acceptor such as oxygen or nitrate can be reduced. The anode and the cathode are connected through an electrical circuit. If electrical power is harvested from this circuit, the system is called a Microbial Fuel Cell; if electrical power is invested, the system is called a Microbial Electrolysis Cell. The overall framework of bio-energy and bio-fuels is discussed. A number of chapters discuss the basics – microbiology, microbial ecology, electrochemistry, technology and materials development. The book continues by highlighting the plurality of processes based on BES technology already in existence, going from wastewater based reactors to sediment based bio-batteries. The integration of BESs into existing water or process lines is discussed. Finally, an outlook is provided of how BES will fit within the emerging biorefinery area.
Download or read book Nitrogen Removal Processes for Wastewater Treatment written by Edris Hoseinzadeh and published by Bentham Science Publishers. This book was released on 2019-07-03 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen containing compounds produced by industrial processes are pollutants which pose a significant environmental and health hazard. There are a number of processes that have been devised for removing nitrogen compounds from wastewater. This reference book summarizes different denitrification methods for wastewater processing. The book introduces readers to toxic nitrogen compounds responsible for water pollution. This introduction is followed by chapters which explain different nitrogen removal methods including conventional methods, biological methods, food industry wastewater treatment and new approaches towards environmental pollution remediation: Bio Electrochemical Systems (BESs). This book is a handy reference guide for industrial and environmental engineers and students learning about wastewater management and industrial denitrification.
Download or read book The Combined Sharon Anammox Process written by L. G. J. M. van Dongen and published by IWA Publishing. This book was released on 2001-09-30 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wastewater treatment management, alongside many other industries, is seeking to attain a higher degree of sustainability for its processes by focusing on new technologies which minimise the consumption of resources or even recover them from the wastewater. Conventional removal of ammonium requires usually large amounts of energy for aeration and organic carbon for denitrification. This report focuses on making the nitrogen-removal process more sustainable. This can be achieved by a partial oxidation of ammonium to nitrite, after which the nitrate produced can be converted into nitrogen gas with the rest of ammonium under anoxic conditions. The treatment of nitrogen-rich water can be carried out beneficially by a combination of the Sharon process with the Anammox process. In this combined process less than 50% of the aeration energy is needed, no COD is required and an insignificant amount of sludge is produced. In this Report the potential of using this technology for the treatment of water arising from sludge treatment at a municipal wastewater treatment plant (WWTP) is evaluated and the results of the operation of the system are described in detail. This reject water contains a significant fraction of the N-load towards the wastewater treatment plant. The results are used in an economic evaluation of a potential full scale installation. The Combined Sharon/Anammox Process Report will provide an invaluable source of information for all those concerned with the efficient and sustainable treatment of wastewater including plant managers, process designers, consultants and researchers.
Download or read book Enhanced Nitrogen Removal of Low C N Ratio Wastewater by Coupling Fe Ii Driven Autotrophic and Heterotrophic Denitrification Using Conductive Carrier written by Wenjuan Zhao and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The denitrification of low C/N ratio wastewater usually faces the issues of slow rate and low efficiency. Nitrogen removal rate can be greatly improved through heterotrophic denitrification by adding sufficient carbon source, but would greatly add the treatment cost. In this study, we report enhanced nitrogen removal of low C/N ratio wastewater by coupling Fe(II)-driven autotrophic and heterotrophic bioelectrochemical denitrification using conductive biofilm carrier. The introduction of conductive graphite carrier is proved to be able to enhance the Fe(II)-driven autotrophic denitrification. The bioreactor using graphite plate as biofilm carrier has a denitrification rate constant (kDN) of 0.016 h-1, which is 1.77 and 5 times as that of with non-conductive polypropylene and without carrier, respectively. The presence of Fe(II) and conductive graphite carrier promotes the denitrification of low C/N ratio wastewater. The kDN of the bioreactor for treatment wastewater with low C/N ratio of 0.76 with Fe(II) is 0.095 h-1, which is 5 times as that of without Fe(II). The reasons for the enhancement of the denitrification of low C/N ratio wastewater are probably that, the conductive carrier enhances the direct electron transfer and facilitates the growth of electroactive microorganisms, while the Fe(II) not only serves as electron donor but also plays the role of mediator and facilitate the mediated electron transfer, thus enhances the both Fe(II)-driven autotrophic and heterotrophic bioelectrochemical denitrification. Microbial community analysis show that the addition of Fe(II) changes the biofilm community composition and greatly enhances the enrichment of electroactive bacterium like Comamonas, and denitrifers such as Chryseobacterium and Castellaniella, in the conductive biofilm carrier under heterotrophic conditions. While the autotrophic conditions are beneficial to the enrichment of other microorganisms without denitrification function, such as soil Aquamicrobium Hydrotalea. This study provided a new strategy for enhancement of the denitrification low C/N ratio wastewater.
Download or read book Nature Based Wastewater Treatment Systems written by Adarsh Kumar and published by CRC Press. This book was released on 2024-11-15 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Giving an account of successfully applied and recently developed green remediation technologies for water pollution control, this book describes the scope and applications of nature-based wastewater treatment technologies for environmental sustainability. The major focus is on associated eco-environmental concerns, recent technological developments, field studies, lessons learned, sustainability concerns, and future challenges. It also deals with the development of valuable bioresources together with wastewater treatment for the circular economy. This book: Covers nature-based wastewater treatment systems for the efficient management of wastewater for the protection of precious water resources. Includes development and utilization of useful bioresources, bioenergy, and value-added products together with wastewater treatment for the circular economy. Discusses technological aspects such as design, operation, and maintenance, eco-friendliness, effectiveness, and sustainability concerns. Highlights technological advancements, field experiences, research gaps, recent developments, challenges, and future directions for further improvements. Reviews field studies and challenges between pollution sources, exposure pathways, and impacts on environmental quality and human health. This book is aimed at graduate students and researchers in environmental engineering and sciences, environmental microbiology, and biotechnology.
Download or read book Aerobic Granular Sludge written by S. Bathe and published by IWA Publishing. This book was released on 2005-03-31 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerobic Granular Sludge has recently received growing attention by researchers and technology developers, worldwide. Laboratory studies and preliminary field tests led to the conclusion that granular activated sludge can be readily established and profitably used in activated sludge plants, provided 'correct' process conditions are chosen. But what makes process conditions 'correct'? And what makes granules different from activated sludge flocs? Answers to these question are offered in Aerobic Granular Sludge. Major topics covered in this book include: Reasons and mechanism of aerobic granule formation Structure of the microbial population of aerobic granules Role, composition and physical properties of EPS Diffuse limitation and microbial activity within granules Physio-chemical characteristics Operation and application of granule reactors Scale-up aspects of granular sludge reactors, and case studies Aerobic Granular Sludge provides up-to-date information about a rapidly emerging new technology of biological treatment.
Download or read book Post Treatments of Anaerobically Treated Effluents written by Vinay Kumar Tyagi and published by IWA Publishing. This book was released on 2019-06-15 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anaerobic process is considered to be a sustainable technology for organic waste treatment mainly due to its lower energy consumption and production of residual solids coupled with the prospect of energy recovery from the biogas generated. However, the anaerobic process cannot be seen as providing the ‘complete’ solution as its treated effluents would typically not meet the desired discharge limits in terms of residual carbon, nutrients and pathogens. This has given impetus to subsequent post treatment in order to meet the environmental legislations and protect the receiving water bodies and environment. This book discusses anaerobic treatment from the perspective of organic wastes and wastewaters (municipal and industrial) followed by various post-treatment options for anaerobic effluent polishing and resource recovery. Coverage will also be from the perspective of future trends and thoughts on anaerobic technologies being able to support meeting the increasingly stringent disposal standards. The resource recovery angle is particularly interesting as this can arguably help achieve the circular economy. It is intended the information can be used to identify appropriate solutions for anaerobic effluent treatment and possible alternative approaches to the commonly applied post-treatment techniques. The succeeding discussion is intended to lead on to identification of opportunities for further research and development. This book can be used as a standard reference book and textbook in universities for Master and Doctoral students. The academic community relevant to the subject, namely faculty, researchers, scientists, and practicing engineers, will find the book both informative and as a useful source of successful case studies.
Download or read book Autotrophic nitrogen removal in granular sequencing batch reactors written by José Ramón Vázquez Padín and published by Univ Santiago de Compostela. This book was released on 2010 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microbial Electrochemical Technologies written by Sonia M. Tiquia-Arashiro and published by CRC Press. This book was released on 2020-01-06 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book encompasses the most updated and recent account of research and implementation of Microbial Electrochemical Technologies (METs) from pioneers and experienced researchers in the field who have been working on the interface between electrochemistry and microbiology/biotechnology for many years. It provides a holistic view of the METs, detailing the functional mechanisms, operational configurations, influencing factors governing the reaction process and integration strategies. The book not only provides historical perspectives of the technology and its evolution over the years but also the most recent examples of up-scaling and near future commercialization, making it a must-read for researchers, students, industry practitioners and science enthusiasts. Key Features: Introduces novel technologies that can impact the future infrastructure at the water-energy nexus. Outlines methodologies development and application of microbial electrochemical technologies and details out the illustrations of microbial and electrochemical concepts. Reviews applications across a wide variety of scales, from power generation in the laboratory to approaches. Discusses techniques such as molecular biology and mathematical modeling; the future development of this promising technology; and the role of the system components for the implementation of bioelectrochemical technologies for practical utility. Explores key challenges for implementing these systems and compares them to similar renewable energy technologies, including their efficiency, scalability, system lifetimes, and reliability.
Download or read book Process Design Manual for Nitrogen Control written by United States. Environmental Protection Agency. Office of Technology Transfer and published by . This book was released on 1975 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustainable nitrogen removal in emerging pollutant contaminated wastewater Technology application and risk assessment written by Zhaoming Zheng and published by Frontiers Media SA. This book was released on 2024-01-29 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Autotrophic Nitrogen Removal from Municipal Wastewater Based on Anammox written by Michele Laureni and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Removal from Municipal Wastewater written by Matti Valve and published by Nordic Council of Ministers. This book was released on 1995 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technologies for the Treatment and Recovery of Nutrients from Industrial Wastewater written by Val del Río, Ángeles and published by IGI Global. This book was released on 2016-10-21 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of wastewater from various human and industrial activities has a harsh impact on the environment. Without adequate treatment, the disposal of this wastewater poses a threat to the quality of water globally. Technologies for the Treatment and Recovery of Nutrients from Industrial Wastewater investigates emergent research and best practices within the field of wastewater management. Highlighting novel technological tools in wastewater treatment, effective nutrient removal technologies, and innovative solutions to quality water preservation practices, this book is a critical reference source for professionals, scientists, academics, and students.
