Patent ID: 7857968
Filing Date: 2010-12-28
Classification: B01D,E03F,Y02A,Y02W,Y10S,Y10T

Abstract:
1. A sewer system for carrying sewage effluent from a source of sewage for treatment at a sewage treatment center, the sewer system comprising: an inlet pipe for carrying solid and liquid sewage from the source of sewage; a primary treatment unit for receiving said solid and liquid sewage from the source of sewage via the inlet pipe, wherein said inlet pipe is sealingly connected to the primary treatment unit, said primary treatment unit comprising a first compartment for receiving said solid and liquid sewage and a second compartment in fluid communication with said first compartment by means of a conduit for receiving substantially liquid sewage from said first compartment, wherein liquid and solid components of the sewage are substantially separated in said first compartment and the solid components of the sewage so separated are retained in said first compartment; a lateral sewer pipe for receiving substantially liquid sewage from said second compartment, said lateral sewer pipe sealingly connected to said second compartment, wherein flow of the substantially liquid sewage between the second compartment and the lateral sewer pipe is regulated by a flow attenuation device configured to provide a more consistent flow rate of liquid sewage to the lateral sewer pipe and to substantially eliminate instantaneous surge loads; a collection main sealingly connected to said lateral sewer pipe whereby said substantially liquid sewage is carried to said treatment center; and one or more vents sealingly connected to any of the primary treatment unit, lateral sewer pipe or collection main to permit the exchange of gasses between the sewer system and external environment during operation.