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Basic Activated Sludge Review















                                 In the Basic Activated Sludge Oxidation Ditch and Step Feed Modules, we


                                 discussed all the ingredients and conditions activated sludge biomass



                                 needs to thrive, including the need for Aeration (air) Food (BOD)


                                 Aeration Contact (time) Clarifier Detention, Sludge Retention Time (Age)



                                 and pH.
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