Photo-Activated Sludge: A Novel Algal-Bacterial Biotreatment for Nitrogen Removal from Wastewater PDF Download
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Author: Angélica Rada Ariza
Publisher:
ISBN:
Category : TECHNOLOGY & ENGINEERING
Languages : en
Pages : 0
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Book Description
Nitrogen rich wastewaters (10-400 mg N L-1) are usually produced by municipal, industrial and agricultural wastes, such as effluents from anaerobic treatments. These represent a risk to the environment due to the high nutrient concentrations (nitrogen and phosphorous), which can cause eutrophication of water bodies, deteriorating the quality of the ecosystems. As a solution, the potential nitrogen removal capacity of a novel bio-treatment system, namely the Photo-Activated Sludge (PAS), which is composed of microalgae and bacteria consortia, is presented in this thesis. This novel bio-treatment is based on the symbiosis between microalgae, nitrifiers and heterotrophic bacteria (microalgal-bacterial consortia) Experimental work using photobioreactors for the cultivation of microalgae and bacteria under sequencing batch conditions showed that microalgal-bacterial consortia can remove ammonium 50% faster than solely microalgal consortia. The increase in ammonium removal rates was due to the action of nitrifying bacteria, supplied with oxygen produced by algae. Nitrification was the main ammonium removal mechanism within the microalgal-bacterial biomass, followed by algal uptake and nutrient requirements for bacterial growth. Carbon oxidation and denitrification were the main removal mechanisms for organic carbon. Hence, the role of algae within the microalgal-bacterial system is to provide oxygen to support the aerobic processes. The microalgal-bacterial system offers the possibility of reducing the hydraulic retention time, which can decrease the large area requirements often demanded by algal systems.
Author: Angélica Rada Ariza
Publisher:
ISBN:
Category : TECHNOLOGY & ENGINEERING
Languages : en
Pages : 0
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Book Description
Nitrogen rich wastewaters (10-400 mg N L-1) are usually produced by municipal, industrial and agricultural wastes, such as effluents from anaerobic treatments. These represent a risk to the environment due to the high nutrient concentrations (nitrogen and phosphorous), which can cause eutrophication of water bodies, deteriorating the quality of the ecosystems. As a solution, the potential nitrogen removal capacity of a novel bio-treatment system, namely the Photo-Activated Sludge (PAS), which is composed of microalgae and bacteria consortia, is presented in this thesis. This novel bio-treatment is based on the symbiosis between microalgae, nitrifiers and heterotrophic bacteria (microalgal-bacterial consortia) Experimental work using photobioreactors for the cultivation of microalgae and bacteria under sequencing batch conditions showed that microalgal-bacterial consortia can remove ammonium 50% faster than solely microalgal consortia. The increase in ammonium removal rates was due to the action of nitrifying bacteria, supplied with oxygen produced by algae. Nitrification was the main ammonium removal mechanism within the microalgal-bacterial biomass, followed by algal uptake and nutrient requirements for bacterial growth. Carbon oxidation and denitrification were the main removal mechanisms for organic carbon. Hence, the role of algae within the microalgal-bacterial system is to provide oxygen to support the aerobic processes. The microalgal-bacterial system offers the possibility of reducing the hydraulic retention time, which can decrease the large area requirements often demanded by algal systems.
Author:
Publisher:
ISBN: 9789463433501
Category :
Languages : en
Pages : 324
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Book Description
Author: Angélica Rada Ariza
Publisher: CRC Press
ISBN: 0429603312
Category : Science
Languages : en
Pages : 219
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Book Description
Nitrogen rich wastewaters (10-400 mg N L-1) are usually produced by municipal, industrial and agricultural wastes, such as effluents from anaerobic treatments. These represent a risk to the environment due to the high nutrient concentrations (nitrogen and phosphorous), which can cause eutrophication of water bodies, deteriorating the quality of the ecosystems. As a solution, the potential nitrogen removal capacity of a novel bio-treatment system, namely the Photo-Activated Sludge (PAS), which is composed of microalgae and bacteria consortia, is presented in this thesis. This novel bio-treatment is based on the symbiosis between microalgae, nitrifiers and heterotrophic bacteria (microalgal-bacterial consortia). Experimental work using photobioreactors for the cultivation of microalgae and bacteria under sequencing batch conditions showed that microalgal-bacterial consortia can remove ammonium 50% faster than solely microalgal consortia. The increase in ammonium removal rates was due to the action of nitrifying bacteria, supplied with oxygen produced by algae. Nitrification was the main ammonium removal mechanism within the microalgal-bacterial biomass, followed by algal uptake and nutrient requirements for bacterial growth. Carbon oxidation and denitrification were the main removal mechanisms for organic carbon. Hence, the role of algae within the microalgal-bacterial system is to provide oxygen to support the aerobic processes. The microalgal-bacterial system offers the possibility of reducing the hydraulic retention time, which can decrease the large area requirements often demanded by algal systems.
Author: Izharul Haq
Publisher: Elsevier
ISBN: 0323985068
Category : Technology & Engineering
Languages : en
Pages : 284
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Book Description
Bioremediation of Endocrine Disrupting Pollutants in Industrial Wastewater describes the occurrence and sources of endocrine disruptive pollutants (EDPs) in various industrial wastewaters. It discusses the type of EDPs, their effects and detection and treatment methods and presents the fate and effect of EDPs, their quantitative and qualitative analysis in industrial wastewaters and treatment through conventional and advanced technologies. It also presents the most advanced and innovative approaches for the management of EDPs in industrial wastewaters.The book will be a vital source of information for the students and researchers who have interest in emerging pollutants, specifically endocrine disruptive pollutants for their treatment and management. Provides quantitative and qualitative analysis of EDPs in industrial wastewaters Provides detailed information on the EDPs of the industrial wastewaters origin Describes toxic and estrogenic effect of the EDPs on living organisms Discusses the management of EDPs through sustainable, advanced and eco-friendly treatment process Covers most advanced and innovative approaches for the management of EDPs in industrial wastewaters
Author: Izharul Haq
Publisher: Elsevier
ISBN: 0323907091
Category : Science
Languages : en
Pages : 254
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Book Description
Biodegradation and Detoxification of Micropollutants in Industrial Wastewater summarizes the occurrence and source of micropollutants through various industrial wastewaters. It covers the type of micropollutants, their effects, and emerging detection and treatment methods. The book has 11 chapters, and throughout each chapter, it presents the fate and effects of micropollutants, quantitative and qualitative analysis of micropollutants in industrial wastewaters, and treatment of micropollutants through conventional and advanced wastewater treatment technologies. Presents detailed information on the micropollutants of industrial wastewaters and their origins Assesses the toxic effect these micropollutants have on living organisms Evaluates emerging treatment technologies for the removal of micropollutants Includes molecular biology, nanotechnology and microbiology approaches for the management of micropollutants in industrial wastewaters
Author: Maulin Shah
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110727390
Category : Science
Languages : en
Pages : 377
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Book Description
This book highlights the importance of various emerging technologies that are used to clean up the environment from pollution caused by human activities. It assesses several existing applied and environmental microbiological techniques and introduces new technologies through applied aspects. Select topics covered include municipal wastewater treatment, environmental microorganisms, metal pollutants in the environment, and biogeochemical cycling.
Author: Atul Kumar Upadhyay
Publisher: CRC Press
ISBN: 1000204626
Category : Medical
Languages : en
Pages : 288
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Book Description
Algal and sustainable technologies: Bioenergy, Nannotechnology and Green chemistry is an interdisciplinary overview of the world’s major problems; water scarcity, clean environment and energy and their sustenance remedy measures using microalgae. It comprehensively presents the way to tackle the socio-economic issues including food, feed, fuel, medicine and health and also entails the untapped potential of microalgae in environmental management, bioenergy solution and sustainable synthesis of pharmaceutical and nutraceutical products. This book basically emphasizes the success of algae as wonderful feed stocks of future and provides upto date information and sustainable and recreational outlook towards degrading environment and energy crisis. Applicability of fast emerging algae based nanotechnology in bioremediation and production of nanoparticle (AuNP, AgNP etc) are beautifully described along with latest research and findings. Key features: The "waste to best to income" strategies are the main concern of the book and take the edge off the problem of pollution, energy and income. Elucidate the sustainable phycoremediation and nanoparticle functions as low cost approach for various ecosystem services. Information regarding pharmaceuticals, nutraceuticals and other algae based value added product synthesis and fate are comprehensively discussed. Knowledge resource, latest research, findings and prospects presented in an accessible manner for researchers, students, eminent scientists, entrepreneurs, professionals and policy maker.
Author: Paul Bishop
Publisher: CRC Press
ISBN: 9780877628897
Category : Technology & Engineering
Languages : en
Pages : 286
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Book Description
Author: Michael H. Gerardi
Publisher:
ISBN: 9781523102839
Category : Sewage
Languages : en
Pages : 156
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Book Description
Annotation Contents - List of Tables - List of Figures - PART ONE: NITRIFICATION - Chapter 1 Introduction - Chapter 2 Nitrogenous and Phosphorous Compounds - Chapter 3 Nitrification: The Basics - Chapter 4 Nitrifying Bacteria - Chapter 5 Nitrification and Limiting Factors - Chapter 6 Promoting Nitrification - PART TWO: DENITRIFICATION - Chapter 7 Denitrification: The Basics - Chapter 8 Denitrifying Bacteria - Chapter 9 Denitrification and Limiting Factors - PART THREE: BIOLOGICAL PHOSPHORUS REMOVAL - Chapter 10 Biological Phosphorus Removal: The Basics - Chapter 11 EBPR: Process Control - Abbreviations and Acronyms - Glossary - Bibliography - Biological nutrient removal (BNR), the removal of nitrogen and phosphorus from wastewater, is a complex process. Although the activated sludge process is an efficient technology for the removal of biochemical oxygen demand (BOD) and total suspended solids (TSS), it provides less-than-optimal conditions for the removal of nitrogen and phosphorus, and presents numerous challenges to the operator trying to satisfy the many requirements for several different groups of bacteria. In addition to satisfying the requirements there are numerous, highly variable operational conditions that impact BNR. These conditions include: changes in strength and composition of the wastewater, alkalinity and pH, temperature, and presence of inhibitory and toxic wastes. Even fluctuations in flows, especially from inflow and infiltration, can adversely impact the aerobic, anoxic, and anaerobic conditions needed for successful BNR. Of the three treatment processes, nitrification, denitrification, and enhanced biological removal, nitrification is often the most difficult to achieve. Therefore, a large portion of this book reviews nitrification. Operators of the activated sludge process need to understand the basic biological, chemical, and physical requirements for BNR in order to improve the performance of these treatment processes. An Operator's Guide to Biological Nutrient Removal (BNR) in the Activated Sludge Process is intended to help operators in the monitoring, troubleshooting, and process control of BNR. Numerous tables and figures are included in the book to help the operator understand the biological and chemical reactions that are involved in BNR processes and how the reactions can be monitored for process control. Design of BNR processes is not addressed in this book. Design is addressed in numerous engineering publications. The book serves to help operators achieve permit compliance for nitrogen and phosphorus discharge limits and obtain cost-effective operation.
Author: Clair N. Sawyer
Publisher:
ISBN:
Category : Nitrification
Languages : en
Pages : 44
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Book Description
