Undergraduate Course: Water and Wastewater Systems 3 (CIVE09026)
|School||School of Engineering
||College||College of Science and Engineering
|Credit level (Normal year taken)||SCQF Level 9 (Year 3 Undergraduate)
||Availability||Available to all students
|Summary||This course extends the hydrology of the 2nd year Water Resources course (CIVE08011) and covers the practical considerations to be made resulting from the demand for water from community development by considering water consumption, water sources, water quality, treatment of water, wastewater and sludge, effluent disposal and river pollution. It provides Civil Engineers with the necessary tools to design a Water or Wastewater Treatment Plant, essential knowledge for the 4th Year Design Project on Potable Water.
Lectures: Titles & Contents
Water Treatment (week 1-5)
1. Drinking Water Quality Standards
Historical Aspects; Water Quality Standards and Treatment Objectives; EU Directives; WHO Guidelines for Drinking Water Quality; Water Demand; Sources of Water; Classes of Water Treatment; Introduction to Water Treatment; Basic Water Chemistry and Water Microbiology; Waterborne Diseases.
2. Coagulation, Flocculation, and Clarification
Colloidal Suspension; Coagulation Processes, Chemicals; Operation of Coagulation and Flocculation Processes; The Jar Test;
3 Coarse Media Filtration, Waste and Disinfection
Principals of Granular Media Filtration; Slow Sand Filtration; Rapid Gravity Filtration; Dual and Multi-Media Gravity Filtration; Backwashing; Air Scouring; Disinfection; Sludge Treatment.
4 Other Water treatment Processes
Hardness Removal; Activated Carbon Filtration; Ion Exchange; Membrane Processes (Membrane Filtration, Ultrafiltration, Nanofiltration, Reverse Osmosis).
Wastewater Treatment (week 6-10)
5 Characterisation of Organic Effluent
Biological Oxygen Demand (BOD test; calculation of the reaction rate coefficient k); Other Methods of Assessing Oxygen Demand; Other Parameters Used in Urban Wastewater Description.
6 Stream Pollution and Effluent Standards
Organic Stream Pollution; Prediction of Organic Stream Pollution; Effluent Discharge Standards; Best Management Practice.
7 Introduction to Wastewater Treatment
Sewerage Systems; Sewers (combined sewers; separate systems; partially separate system; estimation of flow in sewers); Wastewater Treatment Design Flow Rates; Wastewater Treatment (physical operations; chemical operations; biological processes); Engineering Classification of Wastewater Treatment Stages; Layout of Wastewater Treatment Plants.
8 Preliminary and Primary Treatment Units
Design of Screening Units; Comminutors; Grit Removal; Types of Grit removal Chambers. Classification of Settling Behaviours (class I, II and III settling); The Ideal Settling Tank. Design of Sedimentation Tanks; Loading Rate Methods; Details of Various Types of Sedimentation Tanks (storm tanks; primary sedimentation tanks; secondary sedimentation); Sedimentation Aids.
9 Introduction to Biological Treatment
Process Microbiology and Kinetics of Microbial Processes; Aerobic Biological Treatment Processes; Anaerobic Biological Treatment Processes; Anoxic Processes.
10 Fixed Film Reactors
Theory of Fixed Film Reactors; Design and Operation Of Trickling Filters; Design and Operation of Rotating Biological Contactors; Advantages And Disadvantages; Anaerobic Fixed Film Reactors.
11 Suspended Culture Treatment Systems
Theory of suspended Culture Reactors; F:M Ratio and its use In Design; Mean Cell Residence Time and its use in Design; Design and Operation of the Activated Sludge Process; Effect of Temperature on Design; Waste Sludge Production; Extended Aeration and Oxidation Ditches; Anaerobic Suspended Culture Systems.
12 Alternative Biological Treatment Processes
Removal of N and P by Biological Treatment Processes; Waste Stabilisation Ponds; Facultative Ponds; Constructed Treatment Wetlands; Sustainable Urban Drainage Systems.
13 Sludge Treatment Processes
Theory and Design of Sludge Thickening; Theory of Mechanical De-watering; Types of Mechanical De-watering systems; Disposal of Sludge to Land, Sludge Incineration.
Problem Sheet No. 1
Drinking Water Quality Standards.
Problem Sheet No. 2
Design of Coagulation, Flocculation, Sludge Blanket Clarifiers and Flotation Systems.
Problem Sheet No. 3
Design of Rapid Gravity Filtration.
Problem Sheet No. 4
Characterisation of Organic Effluent; Stream Pollution and Effluent Standards.
Problem Sheet No. 5
Primary Treatment Design.
Problem Sheet No. 6
Biological Treatment Design.
Problem Sheet No. 7
Sludge Treatment Design.
Entry Requirements (not applicable to Visiting Students)
||Other requirements|| None
Information for Visiting Students
|High Demand Course?
Course Delivery Information
|Not being delivered|
On completion of this course, the student will be able to:
- recognize the challenges faced by Civil Engineers in the provision of potable water and consequences of wastewater pollution.
- - Understand and describe the different potable water sources available and their corresponding qualities, linking these to the basic objectives of potable water treatment and the need for water quality standards for drinking water and for wastewater effluent disposal based on common water and wastewater quality parameters;
- - Describe and demonstrate basic knowledge of key principles underlying different water, wastewater and sludge treatment processes and carry out process design.
|Water Quality & Treatment: A Handbook on Drinking Water, Sixth Edition, McGraw-Hill, James Edzwald (Editor), American Water Works Association (AWWA)|
Water Treatment Plant Design, 5th Edition, Stephen Randtke & Michael Horsley (Editors), McGraw-Hill, the American Water Works Association (AWWA), The American Society of Civil Engineers (ASCE)
|Graduate Attributes and Skills
|Course organiser||Dr Andrea Correia Semiao
Tel: (0131 6)50 5792
|Course secretary||Mrs Lynn Hughieson
Tel: (0131 6)50 5687