|[[Image:Upflow_anaerobic_sludge_blanket_reactor1.png |right|300px]]
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[[Image:Icon_upflow_anaerobic_sludge_blanket_reactor.png |right|95px]]
'''The Upflow Anaerobic Sludge Blanket Reactor (UASB) is a single tank process. Wastewater enters the reactor from the bottom, and flows upward. A suspended sludge blanket filters and treats the wastewater as the wastewater flows through it.'''
Desludging is infrequent and only excess sludge is removed once every 2 to 3 years. A permanent operator is required to control and monitor the dosing pump.
==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.
* CritesLettinga, G., Roersma, R. and TchobanoglousGrin, GP. (19981983). Small and decentralized wastewater management systems[http://onlinelibrary.wiley.com/doi/10.1002/bit.260250703/abstract Anaerobic Treatment of Raw Domestic Sewage at Ambient Temperatures Using a Granular Bed UASB Reactor]. WCB Biotechnology and McGraw-Hill, New York, USABioengineering 25 (7): 1701–1723. (Short overviewThe first paper describing the process.)
* LettingaSasse, GL., Roersma, R(1998). [http://www.indiawaterportal. and Grin, Porg/sites/indiawaterportal. (1983)org/files/Decentralised_%20wastewater_%20treatment_%20in_%20developing_%20countries_A_%20handbook_%20by_%20BORDA_1998. Anaerobic pdf DEWATS: Decentralised Wastewater Treatment of Raw Domestic Sewage at Ambient Temperatures Using a Granular Bed UASB Reactor Biotechnology in Developing Countries]. BORDA, Bremen Overseas Research and Bioengineering 25 (7): 1701–1723Development Association, Bremen, Germany. (The first paper describing the process.)
* Sassevon Sperlin, LM. and de Lemos Chernicharo, CA. (19982005). DEWATS[http: Decentralised //www.iwapublishing.com/pdf/contents/isbn1843390027_contents.pdf Biological Wastewater Treatment in Developing CountriesWarm Climate Regions]. BORDAVolume One. IWA, Bremen Overseas Research and Development AssociationLondon, Bremen, Germanypp 741–804. (Short overviewDetailed design information.)
* von SperlinTare, MV. and de Lemos ChernicharoNema, CAA. (2005n.d). Biological Wastewater Treatment in Warm Climate Regions[http://unapcaem.org/Activities%20Files/A01/UASB%20Technology%20%E2%80%93%20Expectations%20and%20Reality.pdf UASB Technology-expectations and reality]. Volume One[http://unapcaem. IWA, London, pp 741–804org United Nations Asian and Pacific Centre for Agricultural Engineering and Machinery]. Assessment of UASB installations in India. (Detailed design information)
* TareVigneswaran, VS. and Nema, Aet al. (n.d1986). UASB Technology-expectations and reality[http://books. United Nations Asian and Pacific Centre for Agricultural Engineering and Machinerygoogle. Available: http:com/books/about/unapcaemAnaerobic_Wastewater_Treatment.html?id=NIJJcgAACAAJ Environmental Sanitation Reviews: Anaerobic Wastewater Treatment- Attached growth and sludge blanket process]. Environmental Sanitation Information Center, AIT, Bangkok, Thailand.org (Assessment of UASB installations in IndiaChapter 5 provides a good technical overview.)
* Vigneswaran, S., et al. (1986). Environmental Sanitation Reviews==Acknowledgements=={{: Anaerobic Wastewater Treatment- Attached growth and sludge blanket process. Environmental Acknowledgements Sanitation Information Center, AIT, Bangkok, Thailand. (Chapter 5 provides a good technical overview.)}}
