by Chung Wai Ki. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1992. / Includes bibliographical references (leaves 110-120). / Acknowledgments --- p.i / Abstract --- p.ii / Table of Content --- p.iii / Chapter 1. --- Introduction --- p.1 / Chapter 1.1 --- Sewage Treatment --- p.1 / Chapter 1.1.1 --- Overview --- p.1 / Chapter 1.1.2 --- Types of Treatment --- p.2 / Chapter 1.2 --- Activated Sludge Process --- p.3 / Chapter 1.2.1 --- Overview --- p.3 / Chapter 1.2.2 --- Biology of Activated Sludge --- p.3 / Chapter 1.2.3 --- Operation of the Activated Sludge Process --- p.4 / Chapter 1.2.4 --- Floe Formation in Activated Sludge Process --- p.10 / Chapter 1.2.5 --- Operational Problems Associated with the Activated Sludge Process --- p.12 / Chapter 1.2.5.1 --- Bulking --- p.12 / Chapter 1.2.5.2 --- Foaming --- p.14 / Chapter 1.3 --- Foaming in Activated Sludge Process --- p.15 / Chapter 1.3.1 --- Overview --- p.15 / Chapter 1.3.2 --- Causes of Foaming --- p.16 / Chapter 1.3.2.1 --- Biology of Nocardia --- p.18 / Chapter 1.3.2.2 --- Growth Strategy of Nocardia --- p.18 / Chapter 1.3.2.3 --- Metabolic Specialization of Nocardia amarae --- p.19 / Chapter 1.3.3 --- Controls of Foaming --- p.20 / Chapter 1.4 --- Microbial Lipid and Bacterial Foaming --- p.23 / Chapter 1.4.1 --- Overview --- p.23 / Chapter 1.4.2 --- Fatty Acids in Bacteria --- p.24 / Chapter 1.4.3 --- Analytical Techniques --- p.25 / Chapter 1.4.3.1 --- Chromatography --- p.25 / Chapter 1.4.3.2 --- Gas Chromatography - Mass Spectrometry (GC-MS) --- p.26 / Chapter 1.4.4 --- Significance of Fatty Acids to Foaming --- p.27 / Chapter 1.5 --- Disinfection --- p.29 / Chapter 1.5.1 --- Overview --- p.29 / Chapter 1.5.2 --- Types of Disinfectants --- p.30 / Chapter 1.5.3 --- Mechanism of Disinfection --- p.31 / Chapter 1.5.4 --- Disinfection with Chlorine and Hypochlorite --- p.31 / Chapter 1.5.5 --- Chemistry of Chlorine Disinfection --- p.32 / Chapter 2. --- Objectives of Study --- p.35 / Chapter 3. --- Materials and Methods --- p.37 / Chapter 3.1 --- Sample Collection: --- p.37 / Chapter 3.2 --- Biological Studies of Activated Sludge Samples --- p.37 / Chapter 3.2.1 --- Microscopic Examination --- p.37 / Chapter 3.2.2 --- Isolation of Foam-Causing Filamentous Bacteria --- p.38 / Chapter 3.3 --- Physiology Studies of Nocardia amarae --- p.39 / Chapter 3.3.1 --- Growth Kinetics --- p.40 / Chapter 3.3.2 --- Effects of Fatty Acids on Nocardia amarae --- p.40 / Chapter 3.3.2.1 --- Fatty Acids as Sole Carbon Source --- p.41 / Chapter 3.3.2.2 --- Growth Stimulation --- p.42 / Chapter 3.3.2.3 --- Foam Test --- p.43 / Chapter 3.4 --- Fatty Acids Analysis --- p.43 / Chapter 3.4.1 --- Fatty Acid Extraction --- p.43 / Chapter 3.4.2 --- GC Analysis --- p.45 / Chapter 3.4.3 --- GC-MS Analysis --- p.46 / Chapter 3.5 --- Laboratory-Scale Activated Sludge Unit --- p.46 / Chapter 3.5.1 --- Set Up --- p.46 / Chapter 3.5.2 --- Performance Assessment of Laboratory-Scale Unit --- p.52 / Chapter 3.5.2.1 --- Physical Parameters --- p.52 / Chapter 3.5.2.2 --- Chemical Parameters --- p.54 / Chapter 3.5.2.3 --- Biological Parameters --- p.55 / Chapter 3.5.3 --- Anoxic Condition --- p.56 / Chapter 3.6 --- Toxicity Studies --- p.56 / Chapter 3.6.1 --- Comparative Toxicity Studies in Pure Culture --- p.56 / Chapter 3.6.2 --- Chlorination Studies of the Laboratory-Scale Unit --- p.58 / Chapter 3.6.3 --- Residual Chlorine Measurement --- p.58 / Chapter 3.7 --- Scanning Electron Microscopy --- p.60 / Chapter 4. --- Results --- p.61 / Chapter 4.1 --- Biological Studies of Activated Sludge --- p.61 / Chapter 4.1.1 --- Microscopic Examination --- p.61 / Chapter 4.1.2 --- Isolation of Foam-Causing Filamentous Bacteria --- p.61 / Chapter 4.2 --- Physiological Studies of Nocardia amarae --- p.65 / Chapter 4.2.1 --- Growth Kinetics --- p.65 / Chapter 4.2.2 --- Effects of Fatty Acids on Nocardia amarae --- p.69 / Chapter 4.2.2.1 --- Fatty Acids as Sole Carbon Source --- p.69 / Chapter 4.2.2.2 --- Growth Stimulation --- p.69 / Chapter 4.2.2.3 --- Foam Test --- p.69 / Chapter 4.3 --- Fatty Acids Analysis --- p.75 / Chapter 4.4 --- Laboratory-Scale Activated Sludge Unit --- p.80 / Chapter 4.4.1 --- Assessment of Performance of the Laboratory-Scale Unit --- p.80 / Chapter 4.4.2 --- Under Anoxic Condition --- p.80 / Chapter 4.5 --- Toxicity Studies --- p.85 / Chapter 4.5.1 --- Comparative Toxicity Studies in Pure Culture --- p.85 / Chapter 4.5.2 --- Chlorination Studies of Laboratory-Scale Unit --- p.85 / Chapter 4.5.3 --- Residual Chlorine Measurement --- p.91 / Chapter 5. --- Discussion --- p.94 / Chapter 5.1 --- Biological Studies of Activated Sludge Samples --- p.94 / Chapter 5.1.1 --- Microscopic Examination --- p.94 / Chapter 5.1.2 --- Isolation of Foam-Causing Filamentous Bacteria --- p.95 / Chapter 5.2 --- Physiological Studies of Nocardia amarae --- p.96 / Chapter 5.2.1 --- Growth Kinetics --- p.96 / Chapter 5.2.2 --- Effects of Fatty Acids on Nocardia amarae --- p.96 / Chapter 5.2.2.1 --- Fatty Acids as Sole Carbon Source --- p.96 / Chapter 5.2.2.2 --- Growth Stimulation --- p.97 / Chapter 5.2.2.3 --- Foam Test --- p.98 / Chapter 5.3 --- Fatty Acids Analysis --- p.99 / Chapter 5.4 --- Laboratory-Scale Activated Sludge Unit --- p.101 / Chapter 5.4.1 --- Assessment of Performance of the Laboratory-Scale Unit --- p.102 / Chapter 5.4.2 --- Under Anoxic Condition --- p.103 / Chapter 5.5 --- Toxicity Studies --- p.103 / Chapter 5.5.1 --- Comparative Toxicity Studies in Pure Culture --- p.103 / Chapter 5.5.2 --- Chlorination Studies of the Laboratory-Scale Unit --- p.105 / Chapter 6. --- Conclusion --- p.107 / Chapter 7. --- Summary --- p.108 / Chapter 8. --- References --- p.110
| Identifer | oai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_318936 |
| Date | January 1992 |
| Contributors | Chung, Wai Ki., Chinese University of Hong Kong Graduate School. Division of Biology. |
| Publisher | Chinese University of Hong Kong |
| Source Sets | The Chinese University of Hong Kong |
| Language | English |
| Detected Language | English |
| Type | Text, bibliography |
| Format | print, xiii, 120 leaves : ill. (some col.) ; 30 cm. |
| Rights | Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
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