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2021 | Buch

Introduction Kapitel lesen Erstes Kapitel lesen

Fixed Bed Hybrid Bioreactor

Theory and Practice

verfasst von: Dr. Sushovan Sarkar, Debabrata Mazumder

Verlag: Springer Singapore

Buchreihe : Green Energy and Technology

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik"

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SUCHEN

Über dieses Buch

This book describes a simplified approach to the modelling and process design of a fixed bed hybrid bioreactor for wastewater treatment. In this work a simplified model for hybrid bioreactor is developed to determine output parameters like exiting substrate concentration in bulk liquid, average substrate flux in the biofilm, effective and total biofilm thickness. The model is based on mass balance of both carbonaceous substrate and biomass under suspended and attached growth simultaneously along with substrate mass transport into the biofilm. The proposed model has also been validated with the results obtained from experimental study with municipal wastewater considering as a low strength wastewater with no inhibition. There is a flexibility of the proposed model making it a versatile one to find out the exiting substrate concentration both in hybrid bioreactor as well as in a completely mixed biofilm reactor (CMBR). The book caters to academics and practitioners working in the field of advanced wastewater treatment.

Inhaltsverzeichnis

Frontmatter
Chapter 1. Introduction
Abstract
Due to the rapid increase in population growth, urbanization, industrialization and more luxurious lifestyles, huge amount of pollutants are produced day by day and discarded into the water system. Billions of gallons of wastewater are produced every day from domestic and industrial sources.
Sushovan Sarkar, Debabrata Mazumder
Chapter 2. Advantages of Hybrid Bioreactor
Abstract
The limitations of activated sludge process with regard to surge loading, maintaining uniform biomass concentration, poor settleability in secondary clarifier, inadequacy to withstand toxic and inhibitory substances, etc. have been focused. Thereafter, the efforts have been made to highlight on upgradation of activated sludge process (ASP) with different possible forms. Advantages of attached-growth process and development of aerobic fixed-bed hybrid bioreactor are also highlighted in this section. Chronological developments of various mathematical models with their comparative features and validation with experimental data are also presented. Treatability study of municipal wastewater under both ASP and aerobic fixed-bed hybrid bioreactor is also explored. Finally, critical assessment is done based on evolution of aerobic fixed-bed hybrid bioreactor, its present and future perspective, mathematical modeling of hybrid bioreactor and its validation in the treatment of synthetic and municipal wastewater.
Sushovan Sarkar, Debabrata Mazumder
Chapter 3. Materials and Methods
Abstract
A simplified model for fixed-bed hybrid bioreactor is developed for easily determining the output parameters like exiting substrate concentration in bulk liquid (Sw), average substrate flux in the biofilm (Javg) and effective as well as total biofilm thickness (Le and Lf).
Sushovan Sarkar, Debabrata Mazumder
Chapter 4. Development of a Mathematical Model for an Aerobic Fixed-Bed Hybrid Bioreactor and Its Analytical Validation
Abstract
In order to design a fixed-bed hybrid biological reactor, a rational and simplified model is very much useful. There are a limited number of methods available for solving problems on hybrid bioreactor system. In the hybrid biological process, solution of biofilm model is much tedious and cumbersome compared to the suspended growth. The reliable analysis for predictions pertinent to the performance of the said reactor is still unavailable.
Sushovan Sarkar, Debabrata Mazumder
Chapter 5. Fabrication of Fixed-Bed Hybrid Bioreactor and Hydraulic Studies
Abstract
For performance study of the fixed-bed hybrid bioreactor as well as for validation of the proposed mathematical model, initiative was taken up to fabricate two laboratory-scale fixed-bed hybrid bioreactors. One reactor was used in batch mode of operation and it consisted of a PVC bucket with aeration facility. Another reactor consisting of a PVC Jar with aeration facility and a secondary clarifier arrangement was used in continuous mode of operation.
Sushovan Sarkar, Debabrata Mazumder
Chapter 6. Performance Evaluation of Fixed-Bed Hybrid Bioreactor Under Synthetic Carbonaceous Wastewater
Abstract
A synthetic carbonaceous wastewater was used as a stock solution, where, COD concentration was set to about 1000 mg/l. Adequate nitrogen and phosphorus were also added to this stock solution in accordance with carbon. Variable initial COD concentrations were set by diluting the stock solution with distilled water.
Sushovan Sarkar, Debabrata Mazumder
Chapter 7. Treatability Study of Municipal Wastewater in Fixed-Bed Hybrid Bioreactor
Abstract
In the medium and small town, the strength of wastewater varies mostly due to disintegrated sewerage systems.
Sushovan Sarkar, Debabrata Mazumder
Chapter 8. Experimental Validation of the Model Developed and Process Design of Fixed-Bed Hybrid Bioreactor
Abstract
The FORTRON program developed for mathematical modeling was run considering the input values like influent substrate concentration (S0), hydraulic retention time (θ), specific surface area (a), attached biomass density (Xf) and relevant kinetic coefficients as well as biofilm specific parameters like half-velocity constant (K), maximum specific rate of substrate utilization (k), biomass yield coefficient (Y), biomass loss rate due to shear from biofilm (bs), biomass decay rate (bd), total biomass loss rate (bt), molecular diffusivity in biofilm (Df) and thickness of liquid layer in biofilm (L). The program was run for predicting the exiting substrate (COD) concentration, which is the key output parameter for performance evaluation of the reactor.
Sushovan Sarkar, Debabrata Mazumder
9. Correction to: Fixed Bed Hybrid Bioreactor
Sushovan Sarkar, Debabrata Mazumder
Metadaten
Titel
Fixed Bed Hybrid Bioreactor
verfasst von
Dr. Sushovan Sarkar
Debabrata Mazumder
Copyright-Jahr
2021
Verlag
Springer Singapore
Electronic ISBN
978-981-334-546-1
Print ISBN
978-981-334-545-4
DOI
https://doi.org/10.1007/978-981-33-4546-1