Abstract: A wastewater treatment device is provided, comprising a first chamber having an influent line for delivering untreated wastewater into the first chamber, wherein the first chamber further includes a first plurality of vertically staggered contact screens below the influent line; a second chamber, fluidically connected to the first chamber by a first transfer conduit for delivering wastewater from the first chamber into the second chamber, wherein the second chamber further includes a second plurality of contact screens; a third chamber, fluidically connected to the second chamber by a second transfer conduit for delivering wastewater from the second chamber into the third chamber, wherein the third chamber further includes an alkaline polish medium; an aeration device disposed within the first chamber for distributing air into the wastewater in the first chamber; and a bioliquid distribution device, fluidically connected to the influent line, comprising a liquid containing select bacteriological and enzymatic