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'''Activated Sludge is a multi-chamber reactor unit that makes use of (mostly) aerobic microorganisms to degrade organics in wastewater and to produce a high-quality effluent. To maintain aerobic conditions and to the keep the active biomass suspended, a constant and well-timed supply of oxygen is required.'''
The mechanical equipment (mixers, aerators and pumps) must be maintained constantly. As well, the influent and effluent must be monitored constantly to ensure that there are no abnormalities that could kill the active biomass and to ensure that detrimental organisms have not developed that could impair the process (e.g. filamentous bacteria).
==AcknowledgementsReferences=={{:Acknowledgements Sanitation}}
* Crites, R. and Tchobanoglous, G. (1998). [http://books.google.com/books/about/Small_and_decentralized_wastewater_manag.html?id==References yx9SAAAAMAAJ Small and Decentralized Wastewater Management Systems]. WCB and external links==McGraw-Hill, New York, USA. pp 451–504. Comprehensive summary including solved problems.
* CritesLudwig, RHF. and TchobanoglousMohit, GK. (19982000). Small and Decentralized Wastewater Management Systems[http://link.springer.com/article/10. WCB and McGraw-Hill1023%2FA%3A1006751714180?LI=true Appropriate technology for municipal sewerage/Excreta management in developing countries, New York, USAThailand case study]. pp 451–504The Environmentalist 20(3): 215–219. (Comprehensive summary including solved problemsAssessment of the appropriateness of Activated Sludge for Thailand.)
* Ludwigvon Sperling, HFM. and Mohitde Lemos Chernicharo, KCA. (20002005). Appropriate technology for municipal sewerage[http://Excreta management www.iwapublishing.com/template.cfm?name=isbn1843390027 Biological Wastewater Treatment in developing countriesWarm Climate Regions, Thailand case studyVolume Two]. The Environmentalist 20(3): 215–219. (Assessment of the appropriateness of Activated Sludge for ThailandIWA, London.)
* von SperlingTchobanoglous, MG., Burton, FL. and de Lemos ChernicharoStensel, CAHD. (20052003). Biological [http://books.google.com/books/about/Wastewater_Engineering_Treatment_and_Reu.html?id=L1MAXTAkL-QC Wastewater Engineering: Treatment in Warm Climate Regionsand Reuse, Volume Two4th Edition]. IWAMetcalf & Eddy, LondonNew York.
* Tchobanoglous, G., Burton, FL. and Stensel, HD. (2003). Wastewater Engineering==Acknowledgements=={{: Treatment and Reuse, 4th Edition. Metcalf & Eddy, New York.Acknowledgements Sanitation}}
