Changes

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sys1=[[Single Pit System |1]]|

sys2=[[Blackwater Treatment System with Infiltration|5]]|

|spanish_link=Lodo_Activado

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[[Image:Icon_activated_sludge.png |right|95px]]

'''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.'''