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dc.contributor.author
Kantza, Eleni
en
dc.date.accessioned
2015-06-16T13:15:18Z
dc.date.available
2015-09-27T05:57:52Z
dc.date.issued
2015-06-16
dc.identifier.uri
https://repository.ihu.edu.gr//xmlui/handle/11544/384
dc.rights
Default License
dc.title
Evaluation of methods for sewage sludge utilization: The Greek perspective
en
heal.type
masterThesis
heal.keyword
Sewage sludge--Management
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heal.keyword
Sewage sludge--Recycling
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heal.keyword
Sewage--Purification--Anaerobic treatment
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heal.keyword
Sewage sludge--Environmental aspects
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heal.keyword
Dissertations, Academic
en
heal.language
en
heal.access
free
el
heal.license
http://creativecommons.org/licenses/by-nc/4.0
heal.recordProvider
School of Science and Technology, MSc in Energy Systems
heal.publicationDate
2011-09
heal.bibliographicCitation
Kantza, Eleni ,2011, Evaluation of methods for sewage sludge utilization : the greek perspective ,Master's Dissertation, International Hellenic University
en
heal.abstract
This thesis aims to contribute to the field of wastewater sustainable management by evaluating the methods for sewage sludge utilization, while identifying the emerging ones. ABSTRACT In the introduction, the initial data for sludge management in Greece and on international level are presented, while in the second chapter the European and Greek legislation regarding the utilization of sludge is analyzed. The methodology followed is: firstly, the SWOT analysis of each sludge treatment technology is presented while being evaluated by certain qualitative criteria. The selected treatment option is analyzed further on economic as well as on energy efficiency basis. The study concludes by discussing the future role that pyrolysis process may have for the integrated treatment of sludge in Greece. The most up to date literature review concerning sewage sludge treatment and disposal methods is presented in chapter three. Finally, the emerging technologies for sludge management are identified as well as the decision making tools are described. At this point I would like to say a few words about the people who helped me during the preparation of my dissertation. First of all, I would like to thank Mrs A. Zabaniotou, Associate Professor in Department of Chemical Engineering AUTH, for the assignment of the thesis and her valuable supervision. With her wide level of knowledge and the willingness to address my problems helped greatly in the completion of this study. Also, I am grateful to Mrs G. Manara, PhD student of AUTH in the group of Professor A. Zabaniotou
en
heal.tableOfContents
ABSTRACT..................................................................................................................................... i CONTENTS................................................................................................................................ ....ii INDEX........................................................................................................................................... v ABBREVIATIONS.......................................................................................................................... vii 1 INTRODUCTION .......................................................................................................................1 1.1 THE PROBLEM OF WASTEWATER MANAGEMENT AND THE AVAILABLE SOLUTIONS ............................................ 2 1.2 AIM OF THE STUDY ............................................................................................................................... 3 1.3 SCOPE AND LIMITATIONS OF THE STUDY ................................................................................................... 3 1.4 SIGNIFICANCE OF THE STUDY .................................................................................................................. 3 2 SLUDGE MANAGEMENT POLICY & LEGISLATION .......................................................................6 2.1 SUSTAINABLE SLUDGE MANAGEMENT ...................................................................................................... 5 2.2 LEGISLATION ....................................................................................................................................... 6 2.2.1 EUROPEAN DIRECTIVES OF SLUDGE MANAGEMENT ............................................................................. 6 2.2.2 EUROPEAN LEGISLATION OVERVIEW ................................................................................................ 7 2.2.3 LEGISLATIVE FRAMEWORK OF SLUDGE MANAGEMENT AND DISPOSAL IN GREECE ...................................10 2.2.4 GREEK LEGISLATION OVERVIEW ....................................................................................................10 2.3 PRINCIPLES FOR SUSTAINABLE DEVELOPMENT .........................................................................................11 2.4 THE “POLLUTER PAYS” PRINCIPLE ..........................................................................................................12 3 LITERATURE REVIEW .............................................................................................................. 15 3.1 DEFINITION OF SEWAGE SLUDGE ...........................................................................................................15 3.2 SEWAGE SLUDGE CHARACTERISTICS .......................................................................................................15 3.3 SLUDGE TREATMENT AND DISPOSAL IN PRACTICE .....................................................................................18 3.3.1 CURRENT AND FUTURE LEVELS OF SLUDGE PRODUCTION AND DISPOSAL IN EU ......................................19 3.4 CURRENT RISKS TO HUMAN HEALTH AND THE ENVIRONMENT ....................................................................20 3.5 BENEFICIAL USES OF SEWAGE SLUDGE ....................................................................................................21 3.5.1 SLUDGE TO ENERGY ...................................................................................................................23 3.5.2 BIOGAS FROM SEWAGE SLUDGE TREATMENT ..................................................................................24 iii 3.5.2.1 Biogas utilization ........................................................................................................25 3.5.3 SEWAGE SLUDGE AS ALTERNATIVE FUEL IN CEMENT PLANTS ...............................................................26 3.5.3.1 Impact on health and environment ............................................................................27 3.6 CURRENT SITUATION OF SEWAGE SLUDGE IN GREECE ...............................................................................29 3.6.1 PSYTTALIA WWTP .....................................................................................................................30 3.7 INTEGRATED SEWAGE SLUDGE MANAGEMENT .........................................................................................31 3.8 CRITERIA FOR THE OPTIMUM SEWAGE SLUDGE MANAGEMENT SOLUTION ....................................................33 3.8.1 ENVIRONMENTAL CRITERIA ..........................................................................................................33 3.8.2 FINANCIAL CRITERIA ...................................................................................................................34 3.8.3 SOCIAL CRITERIA ........................................................................................................................34 4 SEWAGE SLUDGE TREATMENT TECHNOLOGIES ....................................................................... 16 4.1 DESCRIPTION OF SEWAGE SLUDGE TREATMENT METHODS .........................................................................36 4.1.1 ANAEROBIC DIGESTION ...............................................................................................................36 4.1.1.1 Energy balance ...........................................................................................................38 4.1.2 INCINERATION ...........................................................................................................................39 4.1.3 PYROLYSIS ................................................................................................................................41 4.1.4 GASIFICATION ...........................................................................................................................44 4.1.4.1 Hydrogen production from sewage sludge ................................................................47 4.1.5 WET OXIDATION .......................................................................................................................48 4.2 STRATEGIC PLANNING (SP): BASIC CONCEPT ..........................................................................................51 4.2.1 WHAT ARE THE TYPES OF SP MODELS ............................................................................................52 4.2.1.1 SWOT model ...............................................................................................................53 4.2.1.2 Ansoff’s model ............................................................................................................53 4.2.1.3 Porter’s model ............................................................................................................54 5 PROBLEM DEFINITION ............................................................................................................ 52 5.1 GENERAL DESCRIPTION .......................................................................................................................56 5.2 METHODOLOGY .................................................................................................................................56 5.2.1 SWOT ANALYSIS .....................................................................................................................56 5.2.2 QUALITATIVE EVALUATION ..........................................................................................................57 5.2.3 FURTHER STUDY ........................................................................................................................58 6 RESULTS & DISCUSSION ......................................................................................................... 56 6.1 SLUDGE TREATMENT METHODS SWOT ANALYSIS .........................................................................60 iv 6.1.1 ANAEROBIC DIGESTION ...............................................................................................................60 6.1.2 INCINERATION ...........................................................................................................................63 6.1.3 PYROLYSIS ................................................................................................................................65 6.1.4 GASIFICATION ...........................................................................................................................67 6.1.5 WET OXIDATION .......................................................................................................................69 6.2 QUALITATIVE EVALUATION RESULTS ......................................................................................................72 6.3 FURTHER STUDY OF THE SELECTED TECHNOLOGY .....................................................................................72 6.3.1 ECONOMIC EVALUATION OF SLUDGE PYROLYSIS ...............................................................................73 6.3.1.1 Energy consumption for drying ..................................................................................76 6.3.1.2 Energy consumption for pyrolysis ...............................................................................77 6.3.2 ENERGY EFFICIENCY ....................................................................................................................79 6.4 DISCUSSION ......................................................................................................................................80 6.4.1 IMPEDIMENTS TO DEVELOPMENT OF PYROLYSIS TECHNOLOGY ............................................................80 6.4.2 POTENTIAL DEPLOYMENT AND AREAS FOR FURTHER DEVELOPMENT ....................................................80 7 CONCLUSIONS & RECOMMENDATIONS .................................................................................. 83 7.1 CONCLUSIONS ...................................................................................................................................83 7.2 RECOMMENDATIONS ..........................................................................................................................85 REFERENCES…………………………………………………………………………………………………………………………..….…86 APPENDIX…………………………………………………………………………………………………………………….…………..….95
en
heal.advisorName
Zabaniotou, A.
en
heal.committeeMemberName
Zabaniotou, A.
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heal.committeeMemberName
Papadopoulos, Agis
en
heal.committeeMemberName
Karagiannidis, Avraam
en
heal.academicPublisher
School of Science &Technology, Master of Science (MSc) in Energy Systems
en
heal.academicPublisherID
ihu
heal.numberOfPages
107
heal.fullTextAvailability
true


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