Download or read book Performance and Process Analysis of Duckweed Covered Sewage Lagoons for High Strength Sewage the Case of Sana a Yemen written by Fadhi Al Nozaily and published by CRC Press. This book was released on 2000-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Duckweed (L.gibba)-covered sewage lagoons (DSLs) are low cost treatment systems, especially suitable for warm climates, or in lands where there are warm seasons. This study attempts to assess DSL system as a new technology, contributing to the understanding of the different mechanisms in the system. Duckweed-covered sewage lagoons could either replace complete wastewater stabilization ponds (WSPs) or be introduced as a second stage in an integrated WSP-DSL treatment system, which could then be used for purifying municipal wastewater, achieving suitable effluent for reuse in agriculture. The duckweed harvested from DSL systems has, in itself, an intrinsic economic value.

Download or read book Duckweed Aquaculture written by Paul Skillicorn and published by World Bank Publications. This book was released on 1993 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Operational Variables on Nitrogen Transformations in Duckweed Stabilization Ponds written by Julia Rosa Caicedo Bejarano and published by CRC Press. This book was released on 2005-03-24 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is an urgent need to develop and improve low cost technologies for wastewater treatment. Simultaneously treating wastewater and producing duckweed in a pond system is, therefore, an attractive solution contributing to both environmental protection and food production. Duckweed has excellent qualities: a high protein content, a high growth rate and is an easy crop to handle. The small plant turns nitrogen from wastewater into a food source. This thesis reports on the effect of different operational variables, like anaerobic pre-treatment, the combination of algae and duckweed ponds and pond depth. Improved nitrogen removal was obtained through the combination of duckweed ponds with algae ponds. Duckweed pond systems could be designed with shallow depth without affecting nitrogen removal efficiency. This research is the result of the cooperative effort between the EIDENAR, Univalle, Cali, Colombia and the UNESCO-IHE Institute for Water Education in Delft, the Netherlands.

Download or read book Nitrogen Transformations and Removal Mechanisms in Algal and Duckweed Waste Stabilisation Ponds written by Omar Zimmo and published by CRC Press. This book was released on 2003-01-01 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effective treatment of nitrogen containing wastewater is required to prevent eutrophication and groundwater pollution. This thesis shows that effective treatment may be combined with substantial nitrogen recovery in duckweed-based waste stabilization ponds.

Download or read book Natural Wastewater Treatment Systems And Sustainability written by Nicholas F Gray and published by World Scientific. This book was released on 2021-10-04 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with natural treatment systems and the challenges the water industry faces in dealing with sustainability and the realisation of reaching Net Zero by 2030.Surface waters are all under threat, with freshwater ecosystems now facing unprecedented levels of contamination, even after a century of ever stricter legislation and regulation. The increase in population and especially in urbanization without sufficient planning and investment to ensure adequate wastewater collection and treatment coupled with the need to reduce greenhouse gas emissions associated with wastewater treatment is leading to a crisis in wastewater treatment in many countries.Natural treatment systems which use plants and soil micro-organisms are very much nature-based solutions and wherever applicable might offer sustainable and low emissions options for a range of wastewater problems protecting surface waters as well as creating new habitats to support and enhance wildlife diversity. In terms of circularity, natural treatment systems have the potential to produce a staggering array of useful and valuable by-products, including high-value compounds for the pharmaceutical industry.Related Link(s)

Download or read book Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment written by N. Janardhana Raju and published by Springer. This book was released on 2015-11-30 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings of the IAMG 2014 conference in New Delhi explore the current state of the art and inform readers about the latest geostatistical and space-based technologies for assessment and management in the contexts of natural resource exploration, environmental pollution, hazards and natural disaster research. The proceedings cover 3D visualization, time-series analysis, environmental geochemistry, numerical solutions in hydrology and hydrogeology, geotechnical engineering, multivariate geostatistics, disaster management, fractal modeling, petroleum exploration, geoinformatics, sedimentary basin analysis, spatiotemporal modeling, digital rock geophysics, advanced mining assessment and glacial studies, and range from the laboratory to integrated field studies. Mathematics plays a key part in the crust, mantle, oceans and atmosphere, creating climates that cause natural disasters, and influencing fundamental aspects of life-supporting systems and many other geological processes affecting Planet Earth. As such, it is essential to understand the synergy between the classical geosciences and mathematics, which can provide the methodological tools needed to tackle complex problems in modern geosciences. The development of science and technology, transforming from a descriptive stage to a more quantitative stage, involves qualitative interpretations such as conceptual models that are complemented by quantification, e.g. numerical models, fast dynamic geologic models, deterministic and stochastic models. Due to the increasing complexity of the problems faced by today’s geoscientists, joint efforts to establish new conceptual and numerical models and develop new paradigms are called for.

Download or read book Biology Of Wastewater Treatment 2nd Edition written by Nicholas F Gray and published by World Scientific. This book was released on 2004-04-06 with total page 1442 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive text provides the reader with both a detailed reference and a unified course on wastewater treatment. Aimed at scientists and engineers, it deals with the environmental and biological aspects of wastewater treatment and sludge disposal.The book starts by examining the nature of wastewaters and how they are oxidized in the natural environment. An introductory chapter deals with wastewater treatment systems and examines how natural principles have been harnessed by man to treat his own waste in specialist reactors. The role of organisms is considered by looking at kinetics, metabolism and the different types of micro-organisms involved. All the major biological process groups are examined in detail, in highly referenced chapters; they include fixed film reactors, activated sludge, stabilization ponds, anaerobic systems and vegetative processes. Sludge treatment and disposal is examined with particular reference to the environmental problems associated with the various disposal routes. A comprehensive chapter on public health looks at the important waterborne organisms associated with disease, as well as removal processes within treatment systems. Biotechnology has had an enormous impact on wastewater treatment at every level, and this is explored in terms of resource reuse, biological conversion processes and environmental protection. Finally, there is a short concluding chapter that looks at the sustainability of waste water treatment. The text is fully illustrated and supported by over 3000 references./a

Download or read book Novel Measurement and Assessment Tools for Monitoring and Management of Land and Water Resources in Agricultural Landscapes of Central Asia written by Lothar Mueller and published by Springer Science & Business Media. This book was released on 2013-10-04 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book aims to initiate a sustainable use of land and water resources in Central Asia by the transfer of scientific methods. It deals with the most advanced methods worldwide for better monitoring and management of water and land resources. We offer an array of methods of measuring, assessing, forecasting, utilizing and controling processes in agricultural landscapes. These are laboratory and field measurement methods, methods of resource evaluation, functional mapping and risk assessment, and remote sensing methods for monitoring and modeling large areas. The book contains methods and results of data analysis and ecosystem modeling, of bioremediation of soil and water, field monitoring of soils, and methods and technologies for optimizing land use systems as well. The chapter authors are inventors and advocators of novel transferrable methods. The book starts with an analysis of the current state of water and land resources. Finally concrete proposals for the applicability of novel methods are given.

Download or read book Environmental Biotechnology and Cleaner Bioprocesses written by Gloria Sanchez and published by CRC Press. This book was released on 2023-06-14 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: As we enter a new millennium, the environmental issues faced by both developing and industrialised nations are as pressing as ever. Environmental biotechnologies are increasingly being viewed as a major weapon against environmental damage. Cleaner production is part of this strategy and yet there is still widespread ignorance about this emerging technology. Environmental Biotechnology and Cleaner Bioprocesses provides this information at various levels, from introductory to advanced. The first section covers the development of cleaner bioprocesses within the framework of sustainable development. Aspects of environmental policy for small and medium businesses are then discussed using case studies to illustrate principles. The second section covers the recycling and treatment of organic waste, including the use of aquatic plants and microalgae for wastewater treatment and recovery of nutrients. Section three covers bioremediation technologies and finally, section four is dedicated to emerging cleaner bioprocesses and environmentally sound products. All chapters have been written and edited by leading authorities in the field. Students and professionals interested in environmental biotechnology and cleaner production will find the background information and detail they require in this one convenient source.

Download or read book Wetlands For Tropical Applications Wastewater Treatment By Constructed Wetlands written by Norio Tanaka and published by World Scientific. This book was released on 2011-06-24 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a systematic exposition of the design features of constructed wetlands, and their management (in terms of siting, physical maintenance, and operation). Only very few books (or chapters) have been published on constructed wetlands in tropical conditions and none are current. The selection of plant species, managing their growth and harvesting cycles, and the impact these have on the attenuation of organic and inorganic pollutants, nutrients, and pathogens would be of interest to students and practitioners of the art working under tropical conditions. The potential of constructed wetlands as a low-cost intervention for developing countries in tropical regions that faced water pollution problems, in particular, deserves to be explored systematically.

Download or read book Microbial Wastewater Treatment written by Maulin P. Shah and published by Elsevier. This book was released on 2019-06-12 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial Wastewater Treatment focuses on the exploitation of microorganisms as decontaminating tools to treat polluted wastewater, a worldwide concern. Microorganism-based processes are seen as promising technologies to treat the ever-increasing problem of polluted wastewater. The book covers recently developed process technologies to solve five major trends in the field of wastewater treatment, including nutrient removal and recovery, trace organic compounds, energy saving and production, sustainability and community involvement. - Illustrates the importance of microorganisms in wastewater treatment - Points out the reuse of the treated wastewater - Highlights the recovery of resources from wastewater - Pays attention to the occurrence of novel micro-pollutants - Introduces new trends in wastewater technology

Download or read book Management of Greywater in Developing Countries written by Radin Maya Saphira Radin Mohamed and published by Springer. This book was released on 2018-05-04 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the consequences of improper disposal of greywater into the environment and the most appropriate treatment technologies for developing countries, focusing on the potential to reuse greywater as a production medium for biomass and bio-products. It also describes the quantities and qualitative characteristics, as well as the common practice of discharging greywater in developing countries, and highlights the associated health risks. Further, it compares the management of greywater in developed and developing countries and explores the advantages and disadvantages of various treatment technologies, discussing the reuse of greywater for irrigation purposes in arid and sub-arid countries, especially in the Middle East. The book shows the benefits of greywater and introduces low-cost technologies based on the available local facilities can be used to discharge, reuse, and recycle it.

Download or read book Effect of Algal Biofilm and Operational Conditions on Nitrogen Removal in Waste Stabilization Ponds written by Mohammed Babu and published by CRC Press. This book was released on 2011-05-18 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discharge of nutrient rich wastewater causes eutrophication of surface water; therefore wastewater treatment before discharge is required. Wastewater stabilization ponds are low cost technology used by developing countries but not effective in nitrogen removal due to low nitrifier biomass in the water column. Introduction of surface area for attachment of nitrifiers has therefore been proposed. This thesis reports the performance of pilot scale wastewater stabilization ponds fitted with baffles. The effect of baffles on nitrogen removal under tropical and two operational conditions was investigated. Under TKN/BOD ratio of 0.67, the baffled ponds performed better in nitrogen removal than the control pond. Total nitrogen mass balances showed that nitrification-denitrification, algal uptake and sedimentation were principle nitrogen removal mechanisms in biofilm waste stabilization ponds This study shows the potential of biofilms in improving nitrogen removal in wastewater stabilization ponds. The BOD and TSS concentrations were sufficiently low to permit for reuse in irrigation. If the objective is reuse and optimization of resources, the effluents from the ponds had sufficient nitrogen content for use in agriculture.

Download or read book Sustainable Water Treatment written by Siddhartha Moulik and published by John Wiley & Sons. This book was released on 2022-06-27 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: SUSTAINABLE WATER TREATMENT: ADVANCES AND INTERVENTIONS This outstanding new volume is a compendium of reference material which will cover most of the relevant and state-of-art approaches in the field of water treatment, focusing on technological advances for water treatment in four categories: advanced oxidation technologies, nanoparticles for water treatment, membrane separations, and other emerging technologies or processes. Apart from this perspective, fundamental discussions on a wide variety of pollutants have also been included, such as acidic wastewater treatment, metallurgical wastewater, textile wastewater as well as groundwater. The editors have not only covered a wide range of water treatment techniques, but also focus on their applications, offering a holistic perspective on water treatment in general. Covering all of the latest advances, innovations, and developments in practical applications for sustainable water treatment, this volume represents the most comprehensive, up-to-date coverage of the issues of the day and state of the art. Whether for the veteran engineer or scientist or a student, this volume is a must-have for any library. Sustainable Water Treatment: Advances and Interventions covers: Provides an insight into various sectors of water and wastewater treatment technologies, introducing key technical topics Is a comprehensive guide to technological interventions for water and wastewater treatment Is also a reference book for any elective course on water treatment for engineers, scientists, and students, at both the undergraduate and graduate levels Presents the most current and up-to-date advances in sustainable water treatment Covers key technical topics and gives readers a comprehensive understanding of the latest research findings Includes perspectives on future trends and challenges

Download or read book Innovative Bio Based Technologies for Environmental Remediation written by Pardeep Singh and published by CRC Press. This book was released on 2022-01-20 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovative Bio-Based Technologies for Environmental Remediation explores the recent applications of both the latest and broad practical and theoretical aspects of environmental remediation with an aim to combine various innovation-based biotechnology for waste management, waste minimization, and waste to economy. This book summarizes the recent progress of bio-based technologies for environmental remediation at both an experimental and a theoretical model level. An emphasis has been made on trends and the probable future of sustainable techniques to reduce waste and harmful compounds from the environment. Biological-based technologies have low operating costs and involve direct degradation of organic pollutants without the release of toxic intermediates. Recent applications covered in this book include process intensification in bio-based approaches, green technology, phytoremediation, biopolymers, biosurfactants for environmental applications, and other bio-based technologies with sustainable design and the future of remediation are also discussed. This book is an important reference source for environmental scientists and engineers who are seeking to improve their understanding of how bio-based technologies are playing an increasingly important role in environmental remediation. It brings together recent innovations and practices of bio-based technologies for environmental remediation, outlines major bio-based technologies, and discusses biopolymers and biosurfactants for environmental management.

Download or read book Wastewater Reuse Risk Assessment Decision Making and Environmental Security written by Mohammed K. Zaidi and published by Springer Science & Business Media. This book was released on 2007-05-23 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume features the proceedings of the NATO Advanced Research Workshop "Wastewater Reuse - Risk Assessment, Decision-Making and Environmental Security", held in Istanbul, Turkey, in October 2006. It contains 45 papers that cover the current situation of water management in the world and especially the Middle-east and Mediterranean regions, addressing some of the most difficult international conflicts.

Download or read book Piggery Waste Management written by Euiso Choi and published by IWA Publishing. This book was released on 2007-08-31 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among animal wastes, piggery waste is the most troublesome. Pig production industries have been growing as the demand for pork meat has increased, and as a result the waste management problem of piggery waste will become more serious in the future. The land receiving the piggery wastes has already become over saturated with Nitrogen and Phosphorus in many countries and the solution to the waste problem is further complicated as the land area utilised for disposal becomes restricted. This book identifies and characterises the key issues involved in dealing with the management of piggery waste and provides recommendations on sustainable treatment regimes. All the technologies available for the treatment of piggery waste are reviewed, including conventional and emerging technologies from composting and anaerobic digestion to nitrate nitrification and denitrification, Anammox, advanced oxidation, adsorption and membrane technologies. Design procedures for biological nitrogen removal are introduced together with temperature effects. Phosphorus removal characteristics as struvite and other biological forms are also reviewed. Integrated treatment schemes are discussed to build an understanding of the systems to achieve sustainable piggery waste management. Examples of integrated systems are presented, including recent modification of lagoon systems in the US; performances of energy recovery systems in Europe; wastewater treatment systems in Korea with limited land area as well as tropical experiences in Singapore and Malaysia. This work will be an invaluable source of information for all those concerned with the research and practice of animal waste treatment. Practising engineers can use this work for planning, design and operation of treatment plants and it will also be suitable as a reference for policy makers and planners.