Patent ID: 9334178
Filing Date: 2016-05-10
CPC Classification: B01D,B04C,C02F,E03F

Claim Text:
1. A grit removal unit for a wastewater system, comprising: a round grit removal chamber defined by a grit removal chamber bottom surface and a substantially annular grit removal chamber vertical wall extending up from said grit removal chamber bottom surface; an input opening through said grit removal chamber vertical wall, said input opening having an input opening bottom surface above the grit removal chamber bottom surface, with a sloped bottom surface extending between said input opening bottom surface and said grit removal chamber bottom surface; an output opening through said grit removal chamber vertical wall, said output opening having a bottom above the grit removal chamber bottom surface; an influent channel for directing wastewater with grit from an upstream end to a downstream end into said grit removal chamber through said grit removal chamber vertical wall input opening, said influent channel having two influent channel side walls with one of said influent channel side walls substantially tangential to said grit removal chamber vertical wall; a divider wall extending upwardly in said influent channel between said influent channel side walls and defining a first influent channel portion between said divider wall and said one influent channel side wall and a second influent channel portion between said divider wall and the other influent channel side wall; first and second gates at the upstream end of said first and second influent channel portions, respectively, said first gate being adjustable to selectively open flow of wastewater with grit to said first influent channel portion and said second gate being adjustable to selectively open flow of wastewater with grit to said second influent channel portion; an effluent channel for wastewater output from said grit removal chamber through said output opening; and a unitary output guide member having a guide wall extending upward from a substantially horizontal output guide member bottom along an edge of said output guide member bottom wherein wherein said unitary output guide member is adjustably mounted to said grit removal chamber and effluent channel for selective movement through a range of motion whereby