<!{|style="float: left;"|{{Language-- table at top of page with logo, picture, Application level, Management level, and input-output tables -->box|english_link=Aerated_Pond|french_link=Lagunage_aérés|spanish_link=Estanque_de_Aireacion|hindi_link=coming soon|malayalam_link=coming soon|tamil_link=coming soon | korean_link=coming soon | chinese_link=Coming soon | indonesian_link=Coming soon | japanese_link=Coming soon}}|}{|width="100%"|style="width:50%;"|{{santablesantable_new|
sys1=[[Single Pit System |1]]|
sys2=[[Blackwater Treatment System with Infiltration|56]]|sys3=[[Blackwater Treatment System with SewerageEffluent Transport|67]]|sys4=[[Blackwater Transport to (Semi-) Centralized Treatment System |78]]|sys5=[[Sewerage System with Urine Diversion|89]]|
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pic=Aerated_pond.png|
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ManShared=X|
ManPublic=XX|
Input1=Blackwater|Input2=Greywater |Input3= Brownwater | Input4= Effluent |Input5=|Output1= Faecal Sludge | Output2=Effluent | Output3= | Output4= | Output5=
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[[Image:Icon_aerated_pond.png |right|95px80px]]'''An Aerated Pond is a large, outdoor, mixed aerobic reactor.Mechanical aerators provide oxygen and keep the aerobic organisms suspended andmixed with the water to achieve a high rate of organic degradation and nutrient removal.'''
Increased mixing and aeration from the mechanical units means that the ponds can be deeper and can tolerate much higher organic loads than '''An aerated pond is a maturation pondlarge, mixed, aerobic reactor. The increased aeration allows for increased degradation and increased pathogen removal. As well, because Mechanical aerators provide oxygen is introduced by the mechanical units and not by light-driven photosynthesis, keep the ponds can function in more northern climates. Influent should be screened aerobic organisms suspended and pre-treated mixed with water to remove garbage and coarse particles that could interfere with the aerators. Because the aeration units mix the pond, achieve a subsequent settling tank is required to separate the effluent from the solidshigh rate of organic degradation.'''
The smaller area requirement (compared to Increased mixing and aeration from the mechanical units means that the ponds can be deeper and tolerate much higher organic loads than a maturation pond) means that it is appropriate . The increased aeration allows for both ruralincreaseddegradation and increased pathogen removal. As well, because oxygen is introduced by the mechanical units and perinot by light-urban environmentsdriven photosynthesis, the ponds can function in more northern climates.
The pond ===Design Considerations=== Influent should be built to a depth of 2 screened and pre-treated to 5m remove garbage and should have a detention time of 3 to 20 dayscoarse particles that could interfere with the aerators. To prevent leaching, Because the aeration units mix the pond should have , a liner. The liner can be clay, asphalt, compacted earth, or another impervious material. Using the fill that subsequent settling tank is excavated, a protective berm should be built around required to separate the pond to protect it effluent from runoff and erosionthe solids.
The pond should be built to a depth of 2 to 5 m and should have a detention time of 3 to 20 days, depending on the treatment target. To prevent leaching, the pond should have a liner. This can be made from clay, asphalt, compacted earth, or any other impervious material. A protective berm should be built around the pond, using the fill that is excavated, to protect it from runoff and erosion.
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{{procontable | pro=
- Good resistance against Resistant to organic and hydraulic shock loading. loads <br> - High reduction in of BOD and pathogens. <br> - Construction can provide short-term employment to local labourers. <br> - Requires large land area. <br> - Long service life. <br> - No real problems with insects or odours if designed and maintained correctly. | con=- Effluent/sludge requires secondary treatment and/or appropriate discharge. Requires a large land area <br>- High energy consumption, a constant source of electricity is required <br> - Requires expert design High capital and operating costs depending on the price of land and construction supervision. of electricity <br> - Requires full time operation and maintenance by skilled personnel. <br> - Not all parts and materials may be locally available locally. <br> - Constant source of electricity is required. Requires expert design and construction <br> - Moderate-high capital Sludge and possibly effluent require further treatment and variable operating costs depending on the price of land, electricity. /or appropriate discharge
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==Adequacy=Appropriateness=== A mechanically aerated pond can efficiently handle concentrated influent and significantly reduce pathogen levels. It is especially important that electricity service is uninterrupted and that replacement parts are available to prevent extended downtimes that may cause the pond to turn anaerobic.
A mechanically aerated pond Aerated ponds can efficiently handle high concentration influent be used in both rural and can reduce pathogen levels significantlyperi-urban environments. It is especially important that electricity service is uninterrupted They are most appropriate for regions with large areas of inexpensive land located away from homes and that replacement parts are available to prevent extended downtimes that may cause the pond to turn anaerobicbusinesses. Aerated lagoons can function in a larger range of climates than [[Waste Stabilization Pond|WSPsWaste Stabilization Ponds]](T. They are most appropriate for regions with large areas of inexpensive lands that are away from homes 5) and businessesthe area requirement is smaller compared to a maturation pond.
===Health Aspects/Acceptance=== The pond is a large expanse of pathogenic wastewater; care must be taken to ensure that no one comes in contact with or goes into the water.
The pond is a large expanse ===References===* Arthur, J. P. (1983). [https://www.ircwash.org/sites/default/files/Arthur-1983-Notes.pdf Notes on the Design and Operation of pathogenic wastewater; care must be taken to ensure that no one comes Waste Stabilization Ponds in contact withWarm Climates of Developing Countries]. World Bank Technical Paper No. 7. The World Bank, Washington, or goes into the waterD. The aeration units can be dangerous to humans and animalsC. Fences, signage, or other measures should be taken to prevent entry to the areaUS.
==Maintenance==* Crites, R. and Tchobanoglous, G. (1998). Small and Decentralized Wastewater Management Systems. WCB/McGraw- Hill, New York, US. pp. 527-558. (Book; Comprehensive summary chapter)
A permanent skilled staff is required to repair * Tchobanoglous, G., Burton, F. L. and maintain aeration machineryStensel, H. The pond must be desludged once every 2 to 5 yearsD. Care should be taken to ensure that the pond is not used as a garbage dump(2004). Wastewater Engineering: Treatment and Reuse, especially considering the damage that could be done to the aeration equipmentMetcalf & Eddy, 4th Ed.(Internat. Ed.). McGraw-Hill, New York, US. pp. 840-854. (Book; Detailed design and example problems)
===Acknowledgements===
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==References and external links==
* Arthur, JP. (1983). Notes on the Design and Operation of Waste Stabilization Ponds in Warm Climates of Developing Countries. The World Bank + UNDP, Washington. (Notes on applicability and effectiveness.)
* Crites, R. and Tchobanoglous, G. (1998). Small and Decentralized Wastewater Management Systems. WCB and McGraw-Hill, New York, USA. pp 527–558. (Comprehensive summary chapter.)
* Tchobanoglous, G., Burton, FL. and Stensel, HD. (2003). Wastewater Engineering: Treatment and Reuse, 4th Edition. Metcalf & Eddy, New York. pp 840–85. (Detailed design and example problems.)
