The City of Anderson sewer collection system consists of both separated sewers and combined sewers in the older areas that make up the core of the city. The city is currently working on a plan to dramatically reduce the effects of the combined sewer system. At this time, in conjunction with the plan to address the combined sewer system the City of Anderson is taking a proactive approach to increase the overall capacity of the wastewater treatment plant. While there is currently ample excess dry weather capacity to accommodate future large users the city is in the process of implementing a plan that will more than double the current treatment capacity of the wastewater facilities. The City of Anderson’s Industrial Pretreatment and Laboratory personnel have received multiple awards and strive to assist local businesses in resolving any technical or administrative challenge that may arise. The majority of the Anderson wastewater treatment plant actually consists of two wastewater treatment systems located on one property, the New System and the Old System. Secondary effluent from the New and Old System combine for the remainder of treatment. Each system has its own service area. The current permitted capacity of the two systems combined is 21.25 mgd.
The “New System” consists of headworks and primary treatment at the Dewey Street site and secondary treatment at the Gene Gustin Way site. The headworks has an installed capacity of 40 mgd, with a firm capacity of 40 mgd. The primary treatment system has a capacity of 40 mgd. The primary effluent is pumped to secondary treatment with a 26 mgd firm capacity pump station. The Dewey Street Primary Effluent Bypass (Outfall 005) discharges flow greater than the capacity of the primary effluent pump station to the White River. The secondary treatment facility has a capacity of 26 mgd.
The “Old System” consists of headworks, primary treatment, and secondary treatment at the Gene Gustin Way site, each unit having a capacity of 8 mgd. Shared System. The secondary effluent from both systems combines and flows to tertiary treatment including bio-towers, mono-media filters, chlorination and dechlorination at the Gene Gustin Way site. The bio-towers have a capacity of 54 mgd. The filters have a capacity of 21 mgd with the capability for filter bypass for excess flows. The Chlorine contact tank has a capacity of 35 mgd.