Fantastic overview of so many different areas of wastewater treatment. The course linked both real life problems with theoretical concepts. - Gold Coast 2015 View all testimonials

Energy Efficient Wastewater Treatment

This course is not currently scheduled for a future event

Energy efficiency represents both lower operational costs and carbon footprint. This course showcases state-of-the-art in energy efficient wastewater treatment, with emphasis on the opportunities to (i) minimise the contribution of process units (including aeration, pumping, solids handling, mixing and disinfection) to overall energy use at wastewater treatment facilities; and (ii) recover energy from the waste itself.

At the end of the course participants will have detailed knowledge of the major energy inputs and the potential for energy recovery at typical wastewater treatment facilities; be conversant with other professionals regarding the water-energy nexus as it relates to wastewater; and ultimately be able to identify the opportunities for energy savings at wastewater treatment plants. Additionally, they will understand the relationship between energy input and process performance (in terms of carbon and nutrient removal), appreciate why they are not necessarily directly proportional and why there are economies of scale.

This highly interactive course uses a series of workshop based exercises to explore energy input and recovery at wastewater treatment plants. The course will use spreadsheeting as a tool for calculating energy balances, so participants should bring a laptop computer (with Microsoft Excel installed).


Day 1

  • State-of-the-art in energy efficient wastewater treatment
  • The energy balance and its application at wastewater treatment plants; Current energy sinks in wastewater treatment; Spreadsheeting as a tool to conduct energy balances at wastewater treatment plants
  • Virtual Tour highlighting potential energy and energy recovery from organics.

Day 2

  • Aeration � how solids concentration, type of aeration system, reactor depth, diffuser characteristics and blower choices affect energy inputs
  • Pumping and Mixing � how flow, bioreactor design, recycles, head, and viscosity affect energy inputs
  • Solids handling � energy input for stabilising, mixing, dewatering/ drying and transport biosolids. How does solids process selection influence treatment?
  • Energy recovery from anaerobic digestion of organics� what�s the energy input and what are the benefits? To what extent do different types of pre-treatment influence energy recovery?

Day 3

  • Energy demand for disinfection
  • The relationship between plant performance (in terms of carbon and nutrient removal) and energy input
  • Capstone activities on; Systems analysis to quantify the contributions of wastewater treatment technologies to overall energy use; Solids handling and bioreactor considerations for recovering energy from organics; The relationship between nutrient removal and energy input.  


  • Access to a world leading training resource, with coverage of state-of-the-art in energy efficient wastewater treatment. Access to world leading practitioners with local experience.
  • A USB containing all electronic materials used in the course including Microsoft Excel spreadsheets.
  • Virtual tours of two large municipal WWTPs showcasing technologies for energy efficiency.
  • A detailed workshop problem session based on real case study material.
  • Core engineering skills, including the ability to conduct an energy balance, to take back to your workplace, which will enable to identify potential energy savings at wastewater treatment plants.
  • Real plant data and exercise.


This course is designed for water industry professionals, engineers, urban planners, environmental consultants and regulators who are interested in improving energy efficiency at wastewater treatment plants.

Steven Pratt
David de Haas
Damien Batstone