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Sequencing batch reactor

About: Sequencing batch reactor is a research topic. Over the lifetime, 4896 publications have been published within this topic receiving 129803 citations.


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Journal ArticleDOI
TL;DR: It is suggested that the SBR could be used for the enrichment and quantitative study of a large number of slowly growing microorganisms that are currently out of reach for microbiological research.
Abstract: Currently available microbiological techniques are not designed to deal with very slowly growing microorganisms. The enrichment and study of such organisms demands a novel experimental approach. In the present investigation, the sequencing batch reactor (SBR) was applied and optimized for the enrichment and quantitative study of a very slowly growing microbial community which oxidizes ammonium anaerobically. The SBR was shown to be a powerful experimental set-up with the following strong points: (1) efficient biomass retention, (2) a homogeneous distribution of substrates, products and biomass aggregates over the reactor, (3) reliable operation for more than 1 year, and (4) stable conditions under substrate-limiting conditions. Together, these points made possible for the first time the determination of several important physiological parameters such as the biomass yield (0.066 ± 0.01 C-mol/mol ammonium), the maximum specific ammonium consumption rate (45 ± 5 nmol/mg protein/min) and the maximum specific growth rate (0.0027 · h−1, doubling time 11 days). In addition, the persisting stable and strongly selective conditions of the SBR led to a high degree of enrichment (74% of the desired microorganism). This study has demonstrated that the SBR is a powerful tool compared to other techniques used in the past. We suggest that the SBR could be used for the enrichment and quantitative study of a large number of slowly growing microorganisms that are currently out of reach for microbiological research.

2,022 citations

BookDOI
09 May 2011
TL;DR: In this article, a model for a Continuous Stirred Tank Reactor was proposed to evaluate the effect of suspended growth on the performance of a single-stage mixture-of-solutions.
Abstract: Introduction and Background Classification of Biochemical Operations The Role of Biochemical Operations Criteria for Classification Common "Named" Biochemical Operations Key Points Study Questions References Fundamentals of Biochemical Operations Overview of Biochemical Operations Major Types of Microorganisms and Their Roles Microbial Ecosystems in Biochemical Operations Important Processes in Biochemical Operations Key Points Study Questions References Stoichiometry and Kinetics of Aerobic/Anoxic Biochemical Operations Stoichiometry and Generalized Reaction Rate Biomass Growth and Substrate Utilization Soluble Microbial Product Formation Solubilization of Particulate and High Molecular Weight Organic Matter Ammonification and Ammonia Utilization Phosphorus Uptake and Release Simplified Stoichiometry and Its Use Effects of Temperature Key Points Study Questions References Theory: Modeling of Ideal Suspended Growth Reactors Modeling Suspended Growth Systems Modeling Microbial Systems Mass Balance Equation Reactor Types Modeling Nonideal Reactors Key Points Study Questions References Aerobic Growth of Heterotrophs in a Single Continuous Stirred Tank Reactor Receiving Soluble Substrate Basic Model for a Continuous Stirred Tank Reactor Extensions of the Basic Model Effects of Kinetic Parameters Biomass Wastage and Recycle Key Points Study Questions References Multiple Microbial Activities in a Single Continuous Stirred Tank Reactor International Water Association Activated Sludge Models Effect of Particulate Substrate Nitrification and Its Impacts Denitrification and Its Impacts Multiple Events Key Points Study Questions References Multiple Microbial Activities in Complex Systems Modeling Complex Systems Conventional and High Purity Oxygen Activated Sludge Step Feed Activated Sludge Contact Stabilization Activated Sludge Modified Ludzack-Ettinger Process Four-Stage Bardenpho Process Biological Phosphorus Removal Process Sequencing Batch Reactor Key Points Study Questions References Stoichiometry, Kinetics, and Simulations of Anaerobic Biochemical Operations Stoichiometry of Anaerobic Biochemical Operations Kinetics of Anaerobic Biochemical Operations Anaerobic Digestion Model No. 1 Key Points Study Questions References Techniques for Evaluating Kinetic and Stoichiometric Parameters Treatability Studies Simple Soluble Substrate Model with Traditional Decay as Presented in Chapter 5 Simple Soluble Substrate Model with Traditional Decay in the Absence of Data on the Active Fraction Use of Batch Reactors to Determine Monod Kinetic Parameters for Single Substrates Complex Substrate Model with Lysis:Regrowth Approach to Decay as Presented in Chapter 6 (International Water Association Activated Sludge Model No. 1) Using Traditional Measurements to Approximate Wastewater Characteristics for Modeling Key Points Study Questions References Applications: Suspended Growth Reactors Design and Evaluation of Suspended Growth Processes Guiding Principles Iterative Nature of Process Design and Evaluation Basic Decisions during Design and Evaluation Levels of Design and Evaluation Key Points Study Questions References Activated Sludge Process Description Factors Affecting Performance Process Design Process Operation Key Points Study Questions References Biological Nutrient Removal Process Description Process Design Process Operation Key Points Study Questions References Aerobic Digestion Process Description Factors Affecting Performance Process Design Process Operation Study Questions References Anaerobic Processes Process Description Factors Affecting Performance Process Design Key Points Study Questions References Lagoons Process Description Factors Affecting Performance Process Design Process Operation Key Points Study Questions References Theory: Modeling of Ideal Attached Growth Reactors Biofilm Modeling Effects of Transport Limitations Effects of Multiple Limiting Nutrients Multispecies Biofilms Multidimensional Mathematical Models of Biofilms Key Points Study Questions References Biofilm Reactors Packed Towers Rotating Disc Reactors Key Points Study Questions References Fluidized Bed Biological Reactors Description of Fluidized Bed Biological Reactor Fluidization Modeling Fluidized Bed Biological Reactors Theoretical Performance of Fluidized Bed Biological Reactors Sizing a Fluidized Bed Biological Reactor Key Points Study Questions References Applications: Attached Growth Reactors Trickling Filter Process Description Factors Affecting Performance Process Design Process Operation Key Points Study Questions References Rotating Biological Contactor Process Description Factors Affecting Performance Process Design Process Operation Key Points Study Questions References Submerged Attached Growth Bioreactors Process Description Factors Affecting Performance Process Design Process Operation Key Points Study Questions References Future Challenges Fate and Effects of Xenobiotic Organic Chemicals Biodegradation Abiotic Removal Mechanisms Relative Importance of Biotic and Abiotic Removal Effects of Xenobiotic Organic Chemicals Experience with Xenobiotic Organic Chemicals Key Points Study Questions References Designing Systems for Sustainability Defining Sustainability Technologies to Achieve Greater Water Resource Availability Technologies to Achieve Lower Energy and Chemical Consumption Technologies to Achieve Resource Recovery Closing Comments Study Questions References Appendix A: Acronyms Appendix B: Symbols Appendix C: Unit Conversions Index

1,616 citations

Journal ArticleDOI
TL;DR: The physiology of anaerobic ammonium oxidizing (anammox) aggregates grown in a sequencing batch reactor was investigated quantitatively and the anammox process was completely inhibited by nitrite concentrations higher than 0.1 g of nitrogen per liter.
Abstract: The physiology of anaerobic ammonium oxidizing (anammox) aggregates grown in a sequencing batch reactor was investigated quantitatively. The physiological pH and temperature ranges were 6.7 to 8.3 and 20 to 43°C, respectively. The affinity constants for the substrates ammonium and nitrite were each less than 0.1 mg of nitrogen per liter. The anammox process was completely inhibited by nitrite concentrations higher than 0.1 g of nitrogen per liter. Addition of trace amounts of either of the anammox intermediates (1.4 mg of nitrogen per liter of hydrazine or 0.7 mg of nitrogen per liter of hydroxylamine) restored activity completely.

1,274 citations

Journal ArticleDOI
TL;DR: Analysis of literature data enabled the identification of the most important operational parameters leading to N(2)O emission in WWTPs: (i) low dissolved oxygen concentration in the nitrification and denitrification stages, (ii) increased nitrite concentrations in both nitrified stages, and (iii) low COD/N ratio in theDenitrification stage.

1,102 citations

Journal ArticleDOI
TL;DR: The comparison demonstrates that using an integrated bioreactor with stacked configuration in treating high strength industrial wastewaters is advantageous due to minimal space requirements, low capital cost and excellent COD removal efficiencies.

959 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023103
2022284
2021189
2020223
2019256
2018231