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Practitioner's Tool / Types of Sewage Lagoons

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Aerobic Lagoons
Aerobic lagoons, otherwise known as polishing ponds, are shallow impoundments, typically no more than 1 meter in depth. Dissolved oxygen concentrations are typically high due to wind and wave action that allow for natural reaeration. Aerobic ponds typically follow facultative or aerated ponds to provide final polishing by reducing biological demand, total suspended solids and pathogens through natural disinfection. Natural disinfection occurs as ultraviolet light penetrates the water column and kills the pathogens.
 
For more information: [http://aces.nmsu.edu/pubs/_m/M-106.pdf Safe Use of Household Greywater]
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