纳米银对硝化细菌以及SBR反应器中的活性污泥的抑制作用的研究
NITRIFICATION INHIBITION ON NITRIFIERS AND ACTIVATE SEQUENCING BATCH REACTOR BY SILVER NANOPARTICLES
Authorization
摘 要
ABSTRACT
ACKNOWLEDGEMENTS
CONTENTS
NOMENCLATURE
LIST OF TABLES
LIST OF FIGURES
CHAPTER 1 INTRODUCTION
1.1 Background
1.1.1 Definition of Nanotechnology
1.1.2 Environmental Risk by Nanoparticle
1.2 Properties of Silver Nanoparticles
1.2.1 Ultility of Silver Nanoparticles
1.2.2 Environmental Risk of Silver Nanop
1.3 Literature Review
1.3.1 Researches on Nitrogen Removal
1.3.2 Researches on Sequencing Batch Rea
1.3.3 Effect by Metal Nanoparticles to N
1.3.4 Nitrification Inhibition by Silver
1.4 Objective and Scope of Research
1.4.1 Objective of Research
1.4.2 Scope of Research
CHAPTER 2 MATERIALS AND METHODS
2.1 Characteristics of Wastewater Used i
2.2 Reactor Setup
2.2.1 Bench Reactor
2.2.2 Nitrosomonas and Nitrobacter
2.2.3 Equipments Used in this Research
2.2.4 Starting Up of the Research
2.3 Analytical Methods
2.3.1 pH value
2.3.2 Dissolved Oxygen (DO)
2.3.3 Chemical Oxygen Demand (COD)
2.3.4 Mixed Liquor Suspended Solid and V
2.3.5 Total Nitrogen (TN)
2.3.6 Ammonia-Nitrogen (NH-N)
2.3.7 Nitrite-Nitrogen (NO-N)
2.3.8 Nitrate-Nitrogen (NO-N)
2.4 Synthesis of Silver Nanoparticles
2.4.1 Photochemical Process
2.4.2 Citrate Reduction - Heating Proces
2.4.3 Borohydride Reduction - Heating Pr
2.4.4 Silver Nanoparticles with Differen
2.4.5 Characterization of Silver Nanopar
2.5 Scanning Electron Microscope (SEM) E
2.5.1 Scanning Electron Microscope (SEM)
2.5.2 SEM Sample Preparation
2.5.3 SEM Imaging Experiment
CHAPTER 3 INHIBITION EXPERIMENTS
3.1 Nitrifier and Activated Sludge for I
3.1.1 Enrichment of Nitrifier
3.1.2 Cultivation of Activated Sludge
3.2 Silver Nanoparticles for Inhibition
3.2.1 Characterization of Silver Nanopar
3.2.2 Silver Nanoparticles with Differen
3.3 Determination of Reaction Time
3.4 Nitrification Inhibition with Silver
3.4.1 Preliminary Work
3.4.2 Inhibition Effect by Different Sil
3.5 Inhibition Experiments with Activate
3.5.1 Inhibition to Nitrifier Sludge
3.5.2 Inhibition to Activated Sludge for
3.6 Conclusion of this Chapter
CHAPTER 4 ALLEVIATION EXPERIMENTS
4.1 Alleviation Experiments with Inorgan
4.1.1 Preliminary Work
4.1.2 Results and Analysis
4.2 Alleviation Experiments with Organic
4.2.1 Preparation Work and Method
4.2.2 Results and Analysis
4.3 Conclusion of this Chapter
CHAPTER 5 PRELIMINARY MECHANISM OF NITRIFICATION INHIBITION
5.1 Preliminary Mechanism
5.2 Toxicities by Silver Nanoparticles
5.3 Conclusion of this Chapter
REFERENCES
APPENDIX I
APPENDIX II
APPENDIX III
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