Effects of media design on anaerobic filter performance

240 Pages·2017·4.32 MB·English

Iowa State University Capstones, Theses and
Retrospective Theses and Dissertations
Dissertations
1982
Effects of media design on anaerobic filter
performance
Mohamed Fituri Dahab
Iowa State University
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Recommended Citation
Dahab, Mohamed Fituri, "Effects of media design on anaerobic filter performance " (1982).Retrospective Theses and Dissertations. 7496.
https://lib.dr.iastate.edu/rtd/7496
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Dahab, Mohamed Fituri
EFFECTS OF MEDIA DESIGN ON ANAEROBIC FILTER PERFORMANCE
lo-wa State University PH.D. 1982
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Effects of media design on anaerobic filter performance
by
Mohamed Fituri Dahab
A Dissertation Submitted to the
Graduate Faculty in Partial Fulfillment of the
Requirements for the Degree of
DOCTOR OF PHILOSOPHY
Department: Civil Engineering
Major: Sanitary Engineering
Approved:
Signature was redacted for privacy.
In Charge of M^jor Wo^
Signature was redacted for privacy.
For the Major Deparranent
Signature was redacted for privacy.
For the Graduate College
Iowa State University
Ames, Iowa
1982
xi
TABLE OF CONTENTS
Page
LIST OF ABBREVIATIONS xii
INTRODUCTION 1
OBJECTIVES AND SCOPE OF STUDY 3
LITERATURE REVIEW 6
Anaerobic Treatment 6
Environmental Requirements of Anaerobic Treatment 10
Hydrogen ion concentration 10
Temperature 11
Toxic materials 11
Anaerobic Treatment Processes 12
Conventional anaerobic processes 13
Anaerobic contact processes 13
Expanded-bed submerged-media reactors 15
The anaerobic filter process 18
Applications of Anaerobic Filter Treatment 20
Kinetics of Anaerobic Filter Treatment 27
Anaerobic Filter Simulation 41
The Anaerobic Filter Model 42
Physical characteristics of the anaerobic filter 42
Developmsnt of the Anaerobic Filter Model 46
Effects of Anaerobic Filter Media 48
EXPERIMENTAL STUDY 52
Test Reactors 52
iii
Page
Feed and Temperature Control System 54
Effluent streams 56
Feedstock (substrate) material 57
Media selection 63
EXPERIMENTAL DESIGN 69
Synthetic Waste 69
Loading Rates 71
Temperature of operation 74
Sampling and Analysis 74
Sample collection 74
Analytical methods 77
START-UP 83
Reactor Assembly 83
Reactor Seeding 84
RESULTS 86
Anaerobic Filter Performance During Start-up 86
Performance at Low Organic Loading Rates 88
Performance during phase I 91
Performance during phase II 98
Performance during phases III and IV 103
Performance during phase V 112
Performance at High Organic Loading Rates 119
Anaerobic Filter Performance Analysis 127
Variability of effluent quality 132
COD-CK^ balance during steady-state operation 132