Patent ID: 7485221
Filing Date: 2009-02-03
Classification: C02F,E03F,Y02A

Abstract:
1. A wastewater treatment system for treating excess wastewater from a sewer system, the wastewater treatment system comprising: a generally vertically oriented first shaft structure adapted to receive excess wastewater from the sewer system; a generally vertically oriented second shaft structure spaced apart from the first shaft structure; a connector passage extending between the shaft structures proximate lower ends of the shaft structures; an effluent passage in fluid communication with the second shaft structure; and a treating agent dispenser for introducing a treating agent into the wastewater; wherein the shaft structures and the connector passage are arranged such that, during a sufficient rain event, the wastewater flows from the sewer system into the first shaft structure, then through the connector passage, then through the second shaft structure after flowing from the connector passage, and into the effluent passage, such that flow time through the shaft structures is greater than flow time through the connector passage, and wherein the treating agent dispenser is operative to introduce the treating agent to thereby sufficiently disinfect at least a portion of the wastewater.