Pond Design: The Next Generation

From 12/2/2018 to 14/2/2018

This course moves pond design principles to a new generation, from simple volumetric sizing, to designs incorporating temperature process equations, non-smelly anaerobic ponds of one day retention, hydraulic design and algae removal in the final effluent.  Recent work has shown that ponds are capable of producing a 5:10:5, BOD:SS:NH3 mg/L effluent whilst achieving less than 100 Escherichia coli per 100ml.  Learn how to exploit this knowledge for your pond systems.  This is a practical course, and participants will undertake design calculations, and work on real pond case studies for both municipal and industrial wastewaters.


  • Use state-of-the-art design principles to design and upgrade waste stabilisation ponds
  • Apply the different pond processes to your situation
  • Complete aerobic and anaerobic pond process designs
  • Apply pond hydraulic design principles to improve final effluent
  • Remove algae to meet a 5:10:5, BOD:SS:NH3mg/L standard
  • Upgrade existing ponds
  • Overcome odour and cyanobacteria through design & operation


Day 1

  • A short history of ponds
  • Why use ponds ?
  • Different types of pond systems
  • The World Bank sewage treatment selection by economics
  • The function of different ponds in sewage treatment
  • Overview of new pond design guidelines
  • Workshop 1: Pond and conventional treatment combinations

Day 2

  • Process design by temperature dependent equations
  • Algae removal by tertiary treatment
  • Pond hydraulic design parameters including thermistors
  • Pond design guidelines
  • Site Visit and debrief

Day 3

  • Upgrading existing ponds to meet tight discharge standards
  • Pond operation
  • Pond monitoring
  • Commissioning, desludging and maintenance needs
  • Workshop 2: Pond process designs


  • A CD of the Waste Stabilisation Pond Design Manual (2010), developed by John Ashworth for the PWC (NT).  This will include an Excel process spreadsheet and engineering drawings
  • Case studies in green field pond design
  • Case studies for upgrading an existing pond scheme
  • Case studies of pond failure – lessons learned
  • Course notes, and access to a leading international practitioner


Engineers and scientists who need to learn about the next generation of pond design and operation. Project managers who need sufficient knowledge to assess consultants' recommendations.

John Ashworth