thumb|upright=1.25|An aerated treatment lagoon in [[Canada]]

An aerated lagoon (or aerated pond) is a simple wastewater treatment system consisting of a pond with artificial aeration to promote the biological oxidation of wastewaters.

There are many other aerobic biological processes for treatment of wastewaters, for example activated sludge, trickling filters, rotating biological contactors and biofilters. They all have in common the use of oxygen (or air) and microbial action to reduce the pollutants in wastewaters.

Types

  • Suspension mixed lagoons, where there is less energy provided by the aeration equipment to keep the sludge in suspension.
  • Facultative lagoons, where there is insufficient energy provided by the aeration equipment to keep the sludge in suspension and solids settle to the lagoon floor. The biodegradable solids in the settled sludge then degrade as in an anaerobic lagoon. The ponds or basins may range in depth from 1.5 to 5.0 meters.

See also

  • Industrial wastewater treatment
  • List of waste water treatment technologies
  • Retention basin
  • Rotating biological contactor
  • Sewage treatment
  • Waste stabilization pond
  • Water aeration
  • Water pollution

References

  • Wastewater Lagoon Systems in Maine
  • Aerated, Partial Mix Lagoons (Wastewater Technology Fact Sheet by the U.S. Environmental Protection Agency)
  • Aerated Lagoon Technology (Linvil G. Rich, Professor Emeritus, Department of Environmental Engineering and Science, Clemson University)