Abstract: A corner support for aiding in the finishing of interior and exterior corners during building construction. The corner support includes three leg members connected perpendicular to one another, a plurality of shelf members which extend outward from, and along the length of each leg member, and three lip members where a lip member extends from the second end of each leg member and the lip member is greater than or equal to the width of the leg member.

Abstract: A sewerage aerator is illustrated having an air feed diffuser with air opening adjustably positioned approximate venturi throat located above the liquid sewerage tank level and having means to introduce the liquid sewerage to the upper venturi chamber and cause it to flow past the air openings.

Abstract: A process and apparatus for treatment of waste water is provided wherein a waste water clarifier is positioned in a waste water flow channel and having a body assembly provided with a bow section facing into and extending above the waste water current, a stern section having an opening below the waste water level to allow the waste water to enter the clarifier, a bottom section constructed from rows of baffle plates wherein the rows are separated from one another by openings to allow the solids settled in the clarifier to re-enter the waste water flow channel, and an effluent launder fixedly positioned in the bow section.