COURSE UNIT TITLE

: DESIGN OF SLUDGE HANDLING AND DISPOSAL SYSTEMS

DEGREE PROGRAMMES

Description of Individual Course Units

Course Unit Code Course Unit Title Type Of Course D U L ECTS
ENV 5038 DESIGN OF SLUDGE HANDLING AND DISPOSAL SYSTEMS ELECTIVE 3 0 0 6

Offered By

Graduate School of Natural and Applied Sciences

Level of Course Unit

Second Cycle Programmes (Master's Degree)

Course Coordinator

PROFESSOR AYŞE FILIBELI

Offered to

ENVIRONMENTAL SCIENCE
Environmental Engineering
ENVIRONMENTAL TECHNOLOGY
ENVIRONMENTAL ENGINEERING
ENVIRONMENTAL SCIENCES
ENVIRONMENTAL TECHNOLOGY

Course Objective

The sludge resulting from wastewater treatment operations and processes is usually in the form of a liquid or semisolid liquid, depending on the operations and processes used. The cost of sludge handling and disposal units is almost 50% of total cost of a treatment plant. Therefore, choosing of adequate sludge treatment methods is very important and it is directly related with the sludge properties. In the scope of this lecture, some characteristics of sludge produced different treatment stages will be given briefly and designing of sludge handling and disposal systems will be given in detail

Learning Outcomes of the Course Unit

1   Defining of physical, chemical, biological properties and the amount of sludges
2   Clasification of sludges according to their sources
3   Determining and application of sludge treatment units depending on their properties
4   Discussion of sludge treatment processes depending on their properties and sources
5   The ability of designing of sludge treatment processes
6   Assesment and discussion of appropriate methods to disposal and reuse of sludges

Mode of Delivery

Face -to- Face

Prerequisites and Co-requisites

None

Recomended Optional Programme Components

None

Course Contents

Week Subject Description
1 CHARACTERISTICS OF SLUDGE 1.1. Primary sludge 1.2. Chemical sludge 1.3. Activated sludge 1.4. Trickling filter sludge 1.5. Digested sludge
2 RHEOLOGICAL PROPERTIES OF SLUDGE 2.1. Viscosity 2.2. Torque 2.3. Flow Behavior 2.4. Thixotropy and Rheopexy
3 SOLID BALANCES 3.1. Solid and Sludge Sources of Treatment Plants 3.2. Basis for Preparation of Mass Balances 3.3. Example of Preparation of Solids Balances for Treatment Facilities
4 SLUDGE PUMPING 4.1. Application of Pumps to Types of Sludge 4.1.1. Plunger Pumps 4.1.2. Progressing-cavity Pumps 4.1.3. Centrifugal Pumps 4.2. Head-loss Determination 4.3. Sludge Piping 4.4. Sludge Transportation
5 PRELIMINARY OPERATIONS 5.1 Sludge Grinding 5.2. Sludge Degritting 5.3. Sludge Blending 5.4. Sludge Storage
6 THICKENING 6.1. Description of the Process 6.1.1. Flotation Thickening 6.1.2. Centrifugal Thickening 6.1.3. Gravity Thickening 6.2. Design Examples
7 STABILIZATION 7.1. Lime Stabilization 7.2. Anaerobic Digestion 7.3. Aerobic Digestion 7.4. Composting 7.5. Design Examples
8 Mid-term examination
9 CONDITIONING 9.1. Chemical Conditioning 9.1.1. Chemical Conditioner Types 9.1.2. Choosing of Adequate Conditioner Type and Dosage 9.1.2.1. Specific Resistance to Filtration (SRF) 9.1.2.2. Capillary Suction Time (CST) 9.1.2.3. Centrifugal Settleability Index (CSI) 9.2. Freezing-Thawing 9.3. Heat Treatment 9.4. Laboratory Application
10 DEWATERING 10.1. Mechanic Dewatering Systems 10.1.1. Vacuum Filtration 10.1.2. Centrifugation 10.1.3. Filter Presses 10.2. Natural Dewatering Systems 10.2.1. Sludge Drying Beds 10.2.2. Lagoons
11 THERMAL REDUCTION 11.1. Process Fundamentals 11.2. Thermal Reduction Processes
12 FINAL DISPOSAL 12.1. Final Disposal in the Marine Environment 12.2. Final Disposal on Land 12.2.1. Methods of Land Disposal 12.2.2. Potential Problems with Land Disposal 12.2.3. Deep-Well Injection 12.2.4. Solidification
13 REGULATIONS Case Studies: Some Full-Scale Systems 13.1. Existed Regulations about Sludge Management in Turkey 13.2. Regulations Related With the Sludge at Other Countries
14 Mid-term examination

Recomended or Required Reading

1. Treatment and Disposal of Wastewater Sludges,P. A. Vesilind, Ann Arbor Science, Michigan,1979.
2. Arıtma Çamurlarının Işlenmesi, Ayse Filibeli, Dokuz Eylül Üniversitesi Mühendislik Fakültesi Yayınları, 975-441-117-4, Izmir,1996.
3. Sludge into Biosolids-Processing, Disposal and Utilization, L. Spinosa,P. A. Vesilind, , IWA Publishing, London, 2001
4. Metcalf & Eddy, "Wastewater Engineering-Treatment, Disposal, Reuse", McGraw Hill International Editions, 2005.

Planned Learning Activities and Teaching Methods

Presentation, design examples and scientific discussion

Assessment Methods

SORTING NUMBER SHORT CODE LONG CODE FORMULA
1 ASG ASSIGNMENT
2 MTE 1 MIDTERM EXAM 1
3 MTE 2 MIDTERM EXAM 2
4 FIN FINAL EXAM
5 PAR PARTICIPATION
6 FCG FINAL COURSE GRADE ASG * 0.15 + MTE 1 * 0.175 + MTE 2 * 0.175 + FIN * 0.40 + PAR * 0.10
7 RST RESIT
8 FCGR FINAL COURSE GRADE (RESIT) ASG * 0.15 + MTE 1 * 0.175 +MAKRMTE 2 * 0.175 + RST * 0.40 + PAR * 0.10


Further Notes About Assessment Methods

None

Assessment Criteria

There will be 2 midterm exams in determining the in-semester grade. Midterm exam grades, contribution to the lectures, and final exam grade is considered.

Language of Instruction

English

Course Policies and Rules

To be announced.

Contact Details for the Lecturer(s)

Prof.Dr. Ayşe Filibeli, Department of Environmental Engineering, Office # A323
Phone:232-3017117, e-mail: ayse.filibeli@deu.edu.tr

Assoc.Prof.Dr. Azize Ayol, Department of Environmental Engineering, Office # A326
Phone:232-3017140, e-mail: azize.ayol@deu.edu.tr

Office Hours

Tuesday 5-6, Wednesday 7-8

Work Placement(s)

None

Workload Calculation

Activities Number Time (hours) Total Work Load (hours)
Lectures 12 3 36
Preparation for midterm exam 2 8 16
Preparation for final exam 1 8 8
Preparations before/after weekly lectures 12 3 36
Field study 2 3 6
Reading 4 4 16
Midterm 2 6 12
Final 1 10 10
TOTAL WORKLOAD (hours) 140

Contribution of Learning Outcomes to Programme Outcomes

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CONTACT INFORMATION
Dokuz Eylül Üniversitesi Cumhuriyet Bulvarı No: 144 35210 Alsancak / İZMİR
Phone: +90(232) 412 12 12 - Fax: +90 (232) 464 81 35

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