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 Effect of Algal Biofilm and Operational Conditions on Nitrogen Removal in Waste Stabilization Ponds written by 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 Effect of Algal Biofilm and Operational Conditions on Nitrogen Removal in Wastewater Stabilization Ponds written by Mohammed Babu and published by . This book was released on 2011 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cost efficient Wastewater Treatment Technologies written by Mahmoud Nasr and published by Springer Nature. This book was released on 2023-01-01 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first of two volumes that together provide a comprehensive overview of the current sustainable and low-cost wastewater treatment technologies applied in communities that lack the financial and technical resources needed for an environmental, disease prevention and health nexus.This book reviews natural wastewater treatment technologies and traces the current challenges in wastewater management and sustainability. Divided into 4 themed parts, the chapters from expert contributors cover topics such as simplified and low-energy natural treatment facilities, bioremediation and biotechnology for green future, environmental impact assessment of wastewater reuse, wastewater management and sustainability for irrigation, high-performance and cost-effective biosorbents for heavy metals removal, and eco-friendly nanomaterials for wastewater environmental management. The readers will discover essential recommendations for improving natural treatment systems to withstand emerging contaminants, namely, endocrine disruption chemicals, surfactants, personal care products, pesticides, and pharmaceuticals. Readers will also find valuable guidelines to ensure sustainable and innovative solutions for wastewater treatment in the light of climate change, resource, demand, and funding challenges.Given the breadth and depth of its coverage, the book offers an invaluable source of information for researchers, students and environmental managers alike.
Download or read book Recent Trends in Biofilm Science and Technology written by Manuel Simoes and published by Academic Press. This book was released on 2020-06-04 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent Trends in Biofilm Science and Technology helps researchers working on fundamental aspects of biofilm formation and control conduct biofilm studies and interpret results. The book provides a remarkable amount of knowledge on the processes that regulate biofilm formation, the methods used, monitoring characterization and mathematical modeling, the problems/advantages caused by their presence in the food industry, environment and medical fields, and the current and emergent strategies for their control. Research on biofilms has progressed rapidly in the last decade due to the fact that biofilms have required the development of new analytical tools and new collaborations between biologists, engineers and mathematicians. Presents an overview of the process of biofilm formation and its implications Provides a clearer understanding of the role of biofilms in infections Creates a foundation for further research on novel control strategies Updates readers on the remarkable amount of knowledge on the processes that regulate biofilm formation
Download or read book Constructed Wetlands for Wastewater Treatment in Hot and Arid Climates written by Alexandros Stefanakis and published by Springer Nature. This book was released on 2022-10-11 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited book presents the first collection of case studies and research projects on the sustainable technology of constructed wetlands for wastewater management under hot and arid climates. It is the first such work that summarizes in a single reference the current international experiences and knowledge on the implementation of this nature-based solution under these diverse and often harsh climatic conditions. It covers the relevant gap in the fragmented and limited literature by providing integrated information and documentation on the feasibility of this green technology. The book presents the treatment efficiency of constructed wetland facilities and the research output from 29 different countries across South America, Africa, Asia and Oceania, while it covers various applications such as domestic and municipal wastewater, various industrial effluents and municipal sludge. Many examples and case studies further demonstrate the potential of this technology to contribute to better address the issues of water scarcity and limited fresh water resources through circular management of treated effluents e.g. reuse in irrigation. It also discusses the various challenges and technical aspects that should be considered in such climates, along with the environmental, financial and social benefits of this technology. This work is a useful handbook and guide for professional engineers, practitioners, academics, researchers, students, and water authorities who wish to get a better understanding and first-hand information on the potential of constructed wetlands for cost-effective and sustainable wastewater management in countries with hot and arid climates.
Download or read book Wastewater Stabilization Ponds written by Frank R. Spellman and published by CRC Press. This book was released on 2014-04-09 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ponds (lagoons) have been used for centuries with great success in the treatment of wastewater. Ponds created for treatment, known as stabilization ponds, model the physical and biochemical interactions that occur in natural ponds. Easy to build and manage, stabilization ponds can accommodate large fluctuations in flow, and provide results that are
Download or read book Stabilization Ponds written by Chuck Zickefoose and published by . This book was released on 1977 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Algal Technologies for Wastewater Treatment and Resource Recovery written by Raul Muñoz and published by IWA Publishing. This book was released on 2019-07-26 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 80% of globally produced wastewater receives little or no treatment before it is disposed into the environment. Therefore, it is urgent to develop new wastewater treatment technologies that are sustainable in the broad sense of the word, i.e. not only produce high quality effluents, but also minimise energy expenses, recover energy and nutrients, and apply technology that is appropriate in relation to the availability of skilled personnel. This book compiles the main outcomes of recent efforts to improve the design of waste stabilisation ponds, and confirms the superior performance of high rate algal ponds as a result of process intensification. Anaerobic digestion devoted to biogas production continues to be the preferred strategy for the energy valorisation of the algal biomass, co-digestion with multiple high C/N ratio substrates gathering significant attention over the past years. The potential of algal biomass as a biosorbent for heavy metal removal (Cu, Ni, F) maintains its share in the research field of water bioremediation, while research on nutrient removal has focused on providing new insights on the mechanism of nitrogen and phosphorus removal from wastewater in algal–bacterial systems. Finally, it is worth noticing that breakthroughs in complementary fields of research such as nanotechnology or lighting technology are gradually being implemented in algal biotechnology, with new products such as nanoparticles for water disinfection or photobioreactors illuminated by low intensity LED panels. In Focus – a book series that showcases the latest accomplishments in water research. Each book focuses on a specialist area with papers from top experts in the field. It aims to be a vehicle for in-depth understanding and inspire further conversations in the sector.
Download or read book Performance and Upgrading of Wastewater Stabilization Ponds written by E. Joe Middlebrooks and published by . This book was released on 1979 with total page 228 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 2017-06-29 with total page 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 Revolving Algal Biofilm System a Novel Tertiary Wastewater Treatment and Its Impact on Nutrient Removal and Microbial Activity written by Cassandra E. Ceballos and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The potential of a novel tertiary treatment to reduce total phosphorus (TP) and total nitrogen (TN) in wastewater was assessed. Two revolving algal biofilm (RAB) systems, on which algae grew on vertical belts that rotated through wastewater tanks, were used to treat wastewater that had undergone secondary treatment at the O’Brien Water Reclamation Plant (WRP) in Skokie, Illinois. The 10-ft system treatment used a single 10-ft tall belt in one tank and the series system used four separate belts each in their own tank. TP and TN removal efficiencies were calculated for each RAB system. Diatom algae were sampled biweekly from January - July 2021 and identified by light microscopy and the relative abundance of each species calculated. Chlorophyll a, ash-free dry mass, and diatom biovolume were also measured, to estimate the biomass produced by each system. Utilization of carbon substrates by microbial communities in wastewater were measured with Biolog Ecoplates. TN was not reduced by either RAB system, but TP was significantly reduced by the series system. Multivariate linear regression modeling found that chlorophyll a, ash free dry mass, and microbial activity were significant factors in TP removal in the series system. Nonmetric multidimensional scaling (NMDS) revealed that the diatom community changed over time, with species such as Sellaphora saugeressii, Nitzschia palea, and Navicula cryptocephala being dominant from January - April and taxa such as Discostella spp. and Gomphonema parvulum becoming more abundant from May - July. Neither RAB system impacted the functional diversity of microbes, but total microbial activity increased as a result of the RAB treatments. These findings show that the series RAB system is superior to the 10-ft system, and can serve as a tertiary treatment to further reduce TP in wastewater effluent."--
Download or read book Waste Stabilization Ponds written by H. W. Pearson and published by IWA Publishing (International Water Assoc). This book was released on 2000 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of pond technology is now recognized globally and indeed is undergoing a renaissance at the present time. It was therefore no surprise that scientists and engineers from over 25 countries presented their most recent findings at the Marrakech conference. The choice of Morocco was especially appropriate as it, like most countries of the Magreb, has actively endorsed and implemented the use of waste stabilization ponds as a preferred wastewater treatment technology. The need to reuse treated wastewater is a key component of the water cycle in such water-short regions, and the crucial role that ponds can play in the safe reuse of effluents, particularly for agriculture, has also been recognized and supported by active research at institutions all round the world. This issue contains a selection of the papers presented both in the oral and poster sessions at the conference and should prove very informative for those who wish to keep abreast of developments in the field. Among the 52 papers selected from the oral and poster sessions for these proceedings are work on the performance of ponds systems worldwide, pond microbiology, nutrient removal, pond sludges and sediments, pond design and modeling, high-rate ponds, and effluent reuse.
Download or read book Waste Stabilisation Ponds written by Marcos Von Sperling and published by IWA Publishing. This book was released on 2007-03-30 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Waste Stabilisation Ponds is the third volume in the series Biological Wastewater Treatment. The major variants of pond systems are fully covered, namely: facultative ponds anaerobic ponds aerated lagoons maturation ponds The book presents in a clear and informative way the main concepts, working principles, expected removal efficiencies, design criteria, design examples, construction aspects, operational guidelines and sludge managment for pond systems. 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 4: Anaerobic Reactors; Volume 5: Activated Sludge and Aerobic Biofilm Reactors; Volume 6: Sludge Treatment and Disposal
Download or read book A Dynamic Nutrient Cycle Model for Waste Stabilization Ponds written by Raymond A. Ferrara and published by . This book was released on 1978 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stabilization Ponds for the Removal of Algal Nutrients from Sewage and Sewage Effluents written by Harry Masato Kaneshige and published by . This book was released on 1959 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Removal of Nitrate by an Algal System written by James F. Arthur and published by . This book was released on 1971 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major findings are presented from a one-year operational investigation on the use of algae to remove nitrogen from subsurface agricultural tile drainage in the San Joaquin Valley of California. The objectives of the study were to: (1) refine the design criteria, determined in a preliminary investigation, (2) develop operational procedures, and (3) recommend a design for a prototype algal nitrogen removal process.
