Design of Wastewater Treatment Plant





Offered by

Supply Engineering




Attendance at SE-AWW1

Main purpose

Through information retrieval, discussions, presentations and laboratory exercises to provide the student with knowledge in planning establishment and design a proper waste water treatment plant (WWTP) for achieving a current wastewater quality.


  • Knowledge of designing basic treatment facilities in order to remove grease and oil, sand and gravel, suspended solids, organic matter and ammonia.
  • Establishing of a simple flow diagram and understanding of the internal relations between functions 
  • Knowledge of hydraulic demands within the individual cleaning functions as well as the whole plant
  • Composition of wastewater and its significance in wastewater treatment
  • Recognition of wastewater cleaning methods related to the different wastewater treatment methods
  • Ability to find the right design of WWTP according to the actual outlet demands and geological conditions.
  • Possible cleaning achievement from the different treatment methods and systems.


  • Able to design a mechanical – chemical and biological WWTP
  • Able to describe necessary supervision and control of a WWTP
  • Calculation of volume of sand and grease trap
  • Calculation of primary settlement tank
  • Calculation of biological tank with nitrification 
  • Calculation of secondary settlement tank


  • Knowledge about treatment methods and their depending’s of previous treatments of the wastewater
  • Comparing different treatment systems and able to choose the right one for the actual case
  • Design treatment functions applying methods in order to reduce energy consumption
  • Use optimal hydraulic design in order to avoid unwanted settlement within the system
  • Analyze a specific wastewater flow and outlet demands in order to establish the necessary treatment plant
  • Explain the design criteria from an environmental point of view, create a flow diagram, and plan drawing of the WWTP according to this.


  • Design various elements of WWTP including mechanical – chemical and simple biological processes in order to achieve the requested outlet demands.
  • Achieve basic knowledge of methods to ensure optimum and environmentally friendly buildings, mechanical and electrical equipment and working qualities.
  • Understand basic principles of supervision and control of WWTP.
  • Understand the hydraulic function and interaction within the separate functions as well as in the entire plant.

Teaching methods and study activities

Individual information retrieval, data analysis, report writing, discussions in groups assisted by the lecturer, presentations, self-study, homework assignments.
137.5 hours of work for the student.
Study Activity Model
According to the Study Activity Model, the workload is divided as follows:
Category 1, Initiated by the lecturer with the participation of lecturer and students: 37,5 lesson – 27%
Category 2: Initiated by lecturer with participation of students: 40 hours – 29%
Category 3: Initiated by students with participation of students: 40 hours – 29 %
Category 4: Initiated by students with the participation of lecturer and students: 20 hours – 15%


  • Notes from Ernst S. Hjorth, 2020. Wastewater treatment plants, XXXXXXXX XXX.
  • Wastewater Engineering Treatment and Reuse, F. 2003.
  • Handbook of Water and Wastewater Treatment Plant Operations
  • etc.




Course assignments handed in before deadline.
Type of examination:
Ongoing tests in the form of two written assignments, weighing 25% each and an oral exam on the basis of a third written assignment, weighing 50%.
Internal assessment.
Allowed tools:
Method will be similar to the ordinary assessment (new assignments).

Grading criteria

Grading based on the Danish 7 point scale

Additional information


Ernst Skytte Hjorth

Valid from

8/1/2022 12:00:00 AM

Course type