ENGR409-23S1 (C) Semester One 2023

Design of Drinking Water and Wastewater Treatment Systems

15 points

Start Date: Monday, 20 February 2023
End Date: Sunday, 25 June 2023
Withdrawal Dates
Last Day to withdraw from this course:
  • Without financial penalty (full fee refund): Sunday, 5 March 2023
  • Without academic penalty (including no fee refund): Sunday, 14 May 2023


Project-based design for water and wastewater treatment. Water quality, design flows and loadings, physical primary treatment, biological secondary treatment, disinfection. Drinking water laboratories.

This course will introduce topics in the environmental engineering area of water and wastewater treatment. Successful students will demonstrate an understanding of the fundamental physical, chemical, and biological processes used in water treatment, and be able to produce a process design of municipal water and wastewater treatment systems. Those working in New Zealand on drinking water and wastewater engineering have a mixture of chemical and civil engineering BE degrees, and the mixture of backgrounds of students in this course will prepare students for the mixture they will encounter in the workforce.

The course is taught as two halves; with one half being on potable water treatment and the other half being domestic/industrial wastewater treatment plant design. The course will be taught through lectures and tutorials with laboratory exercises.

Learning Outcomes

Students will be able to…

1. Analyse and solve problems in drinking water and domestic/industrial wastewater treatment using mass balances, reaction kinetics and separation process principles.
2. Design drinking water and domestic/industrial wastewater treatment systems.
3. Measure, through laboratory experimentation, drinking water treatment design parameters.
4      Explain the function, mechanism of treatment and attributes in various water and wastewater treatment process units;
5.     Explain the importance of water from within a te ao Māori context and how this is relevant to design of treatment and disposal systems


ENCN281 or completion of Year 2 of Chemical and Process Engineering degree requirements.



Course Coordinator / Lecturer

Hamish Mackey


Reuben Bouman (BECA) and Jamie Roverts (AECOM)


Assessment Due Date Percentage 
Design Report. Drinking Water Treatment Plant Design 15%
DeWastewater Treatment Plant Desig 25%
Drinking Water Laboratory 10%
Test: Wastewater Treatment 25%
Exam: Drinking Water Treatment 25%

1. Late design or lab reports will be subject to mark reduction at 10% of available marks per 12
h overdue.
2. Students must score at least 40% in each of the mid-term test and final exam in order to pass
the course. In situations where a student narrowly fails to meet this requirement, but scores
very well in the other test/exam and assignments, the student may be eligible to pass at the
discretion of the course coordinator.

Textbooks / Resources

This course does not have a required text and instead provides notes and other resources on LEARN. However, students are also advised to consult the many good environmental engineering textbooks in the library and read in and around the subject areas during this course. These books cover many of the principles and processes that are discussed so that if you wish to do extra reading, have a look at the indexes and table of contents of the various books and you should be able to easily find more information about your subject of interest. Furthermore, a number of articles will be posted on the class LEARN site as recommended reading.

Lecture notes, assignments, lab session files and tutorials will be made available on LEARN. Please note that all lecture recordings, made available through LEARN, are copyright and are not for public dissemination.


For Chemical and Process Engineering students, the course relies on understanding of engineering chemistry, mass balance, and reactor kinetics covered in 200 level courses.

For Civil and Natural Resources Engineering students, the course builds on material in ENCN 281 Environmental Engineering.

Indicative Fees

Domestic fee $1,030.00

International fee $5,750.00

* All fees are inclusive of NZ GST or any equivalent overseas tax, and do not include any programme level discount or additional course-related expenses.

For further information see Civil and Natural Resources Engineering .

All ENGR409 Occurrences

  • ENGR409-23S1 (C) Semester One 2023