Demonstrating effective treatment

Completed July 2001

One of the most promising techniques for removing debris and other solid materials from the combined sewers in Syracuse is a swirl concentrator. In the 1970s, a small swirl concentrator was constructed near Onondaga Creek at Newell Street as part of a demonstration project.

Swirl concentrators are designed to treat combined wastewater and stormwater by removing floating material and heavy solids. The clarified water is disinfected before it is released.

Disinfection

The Newell Street facility was reactivated in 1998 to demonstrate alternative technologies for disinfecting the combined wastewater and stormwater in Syracuse. Two technologies, ultraviolet light and chlorine dioxide, were examined to determine the optimum disinfection technology for the regional treatment facilities (RTFs) that will be operating at Midland Avenue, the Trolley Lot downtown, and in the upper and lower basins of Harbor Brook.

Newell Street CSO

The engineering evaluation found that it would be cost-effective to convey combined sewage from overflows at Newell Street (CSO 067) to the Midland Avenue CSO transmission pipeline and subsequently the Midland Avenue RTF for treatment. See: Midland RTF and conveyances
Project description
Facility plan — & Plan amendment