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ENV4205 Water and Wastewater Treatment

Semester 1, 2019 Online
Short Description: Water and Wastewater Treatment
Units : 1
Faculty or Section : Faculty of Health, Engineering and Sciences
School or Department : School of Civil Engineering and Surveying
Student contribution band : Band 2
ASCED code : 030907 - Water and Sanitary Engineering
Grading basis : Graded


Examiner: Vasanthadevi Aravinthan


Pre-requisite: ENV4203 and ENV2105 or Students must be enrolled in one of the following Programs: PDEV or GCEN or METC or MEPR or GCNS or GDNS or MENS


The effective treatment of water and disposal of liquid wastes is the responsibility of the local authority engineers in many communities. The primary responsibility in any waste treatment system is to ensure that community health is not endangered, but increasing concern is also being shown that the environment should not be unnecessarily harmed, and that the systems employed are cost effective.


This course revises and builds upon the principles of water and wastewater treatment introduced in ENV4203 Public Health Engineering course. The course aims to develop a higher level of expertise, principally in the areas of water and wastewater treatment methodology, and the design of water and wastewater treatment facilities.


On completion of this course, students should be able to:

  1. Justify the physical and chemical processes involved in the treatment of surface water including detailed theories of sedimentation
  2. Design a typical water treatment system for a small community
  3. Describe wastewater characterisation
  4. Analyse the principles and biological processes involved in advanced biological wastewater treatment of a typical urban wastewater having organic and nutrient contaminants
  5. Design the components of wastewater treatment systems tailored to cater for different wastewater compositions
  6. Evaluate the options available for disposal of treated wastewater and sludge


Description Weighting(%)
1. Water and wastewater characterization 5.00
2. Design of typical water treatment processes including sedimentation theories 15.00
3. Fundamentals of biological treatment 10.00
4. Organics removal from wastewater including the theory of kinetics and design of a typical activated sludge process 15.00
5. Nitrogen removal from wastewater using nitrification and denitrification including the process kinetics and design 15.00
6. Phosphorus removal from wastewater biologically including the process kinetics and design: alternative chemical processes 10.00
7. Sludge treatment via anaerobic/aerobic digestion and their process design 10.00
8. Disposal of digested sludge 10.00
9. Disinfection processes including chlorination, Ultraviolet and ozone application 10.00

Text and materials required to be purchased or accessed

ALL textbooks and materials available to be purchased can be sourced from USQ's Online Bookshop (unless otherwise stated). (

Please contact us for alternative purchase options from USQ Bookshop. (

Metcalf & Eddy, AECOM 2014, Wastewater Engineering: Treatment and Resource recovery, 5th edn, McGraw Hill, New York (ISBN: 978-0-07-340118-8).

Reference materials

Reference materials are materials that, if accessed by students, may improve their knowledge and understanding of the material in the course and enrich their learning experience.
McDougall, FR 2001, Integrated solid waste management: a life cycle inventory, 2nd edn, Blackwell Science, Malden, MA.
Qasim, SR 1999, Wastewater treatment plants: planning, design, and operation, 2nd edn, Technomic Publishing Company, Lancaster, PA.
Tchobanoglous, G, Theisen, H & Vigil, SA 1993, Integrated solid waste management: engineering principles and management issues, McGraw Hill, New York.

Student workload expectations

Activity Hours
Assessments 40.00
Directed Study 52.00
Private Study 63.00

Assessment details

Description Marks out of Wtg (%) Due Date Objectives Assessed Notes
Assignment 1 200 20 09 Apr 2019 1,2
Assignment 2 200 20 21 May 2019 3,4,5
Exam 600 60 End S1 1,3,4,5,6 (see note 1)

  1. This will be an Open Examination. The total working time for the examination is 2 hours. The examination date will be available via UConnect when the official examination timetable has been released.

Important assessment information

  1. Attendance requirements:
    It is the students' responsibility to attend and participate appropriately in all activities (such as lectures, tutorials, laboratories and practical work) scheduled for them, and to study all material provided to them or required to be accessed by them to maximise their chance of meeting the objectives of the course and to be informed of course-related activities and administration.

  2. Requirements for students to complete each assessment item satisfactorily:
    To satisfactorily complete an assessment item a student must achieve at least 50% of the marks or a grade of at least C-. Students do not have to satisfactorily complete each assessment item to be awarded a passing grade in this course. Refer to Statement 4 below for the requirements to receive a passing grade in this course.

  3. Penalties for late submission of required work:
    Students should refer to the Assessment Procedure (point 4.2.4)

  4. Requirements for student to be awarded a passing grade in the course:
    To be assured of receiving a passing grade a student must obtain at least 50% of the total weighted marks available for the course (i.e. the Primary Hurdle), and have satisfied the Secondary Hurdle (Supervised), i.e. the end of semester examination by achieving at least 40% of the weighted marks available for that assessment item.

    Supplementary assessment may be offered where a student has undertaken all of the required summative assessment items and has passed the Primary Hurdle but failed to satisfy the Secondary Hurdle (Supervised), or has satisfied the Secondary Hurdle (Supervised) but failed to achieve a passing Final Grade by 5% or less of the total weighted Marks.

    To be awarded a passing grade for a supplementary assessment item (if applicable), a student must achieve at least 50% of the available marks for the supplementary assessment item as per the Assessment Procedure (point 4.4.2).

  5. Method used to combine assessment results to attain final grade:
    The final grades for students will be assigned on the basis of the weighted aggregate of the marks (or grades) obtained for each of the summative assessment items in the course.

  6. Examination information:
    In an Open Examination, candidates may have access to any material during the examination except the following: electronic communication devices, bulky materials, devices requiring mains power and material likely to disturb other students.

  7. Examination period when Deferred/Supplementary examinations will be held:
    Any Deferred or Supplementary examinations for this course will be held during the next examination period.

  8. University Student Policies:
    Students should read the USQ policies: Definitions, Assessment and Student Academic Misconduct to avoid actions which might contravene University policies and practices. These policies can be found at

Assessment notes

  1. Students must familiarise themselves with the USQ Assessment Procedures (

  2. Referencing in Assignments must comply with the Harvard (AGPS) referencing system. This system should be used by students to format details of the information sources they have cited in their work. The Harvard (APGS) style to be used is defined by the USQ library's referencing guide. These policies can be found at

Evaluation and benchmarking

In meeting the University's aims to establish quality learning and teaching for all programs, this course monitors and ensures quality assurance and improvements in at least two ways. This course:
1. conforms to the USQ Policy on Evaluation of Teaching, Courses and Programs to ensure ongoing monitoring and systematic improvement.
2. forms part of the Bachelor of Engineering Honours program and is benchmarked against the professional accreditation standards of Engineers Australia

Other requirements

  1. Computer, e-mail and Internet access:
    Students are required to have access to a personal computer, e-mail capabilities and Internet access to UConnect. Current details of computer requirements can be found at

  2. Students will require reliable and regular access to email and Internet for communication, video conferencing (desirable), and for access to UConnect for this course.

  3. Students can expect that questions in assessment items in this course may draw upon knowledge and skills that they can reasonably be expected to have acquired before enrolling in this course. This includes knowledge contained in pre-requisite courses and appropriate communication, information literacy, analytical, critical thinking, problem solving or numeracy skills. Students who do not possess such knowledge and skills should not expect the same grades as those students who do possess them.