Wastewater Treatment Process

The Jackson Pike (JP) plant was placed into service in 1937. Since that time, it has been modified, expanded, and improved many times. The historical narrative, presents milestones in history highlighting significant improvements. 

It is located on State Route 104 just south of Greenlawn Avenue and is visible from I-71. The plant features a conventional activated sludge process and meets all treatment requirements of the National Pollutant Discharge Elimination System (NPDES) permit. Clean effluent is returned to the Scioto River. 

The average daily design capacity at Jackson Pike is 68 million gallons daily  (MGD) with a peak flow capacity of 150 MGD. A unique flow diversion structure to the north of the plant can direct flows through an interconnecting sewer to the Southerly plant when JP reaches its maximum capacity. 

Wastewater flow that reaches JP enters a set of mechanical course and fine screens before it is pumped to a vortex grit removal system. From here, flow is split between A-Plant and B-Plant using a flow control system. The A-Plant and B-Plant are nearly identical except that A-Plant was constructed originally, and B-Plant was added later when more capacity was needed.

Biosolids are treated and stabilized through anaerobic digestion to Class B standards, which reduces pathogens, minimizes odor, and decreases volume A portion of the solids are taken to the Composting Facility where they are composted to Class A, exceptional quality standards and marketed to the public and other outlets as Com-Til mulch.

Jackson Pike is implementing an electrical cogeneration system (photo below) to utilize methane rich gas produced by the digesters to generate electricity for multiple uses in the plant. This includes heating of the digestion process and buildings, and generating electricity to offset much of the electrical demands of running the plant.

Located on U.S Route 23 just north of Pickaway County, this plant was placed into service in 1967 to meet the needs of the growing service area. It has been modified, expanded, and improved many times.

Like Jackson Pike (JP), the Southerly plant features a conventional activated sludge process and follows all treatment requirements of the National Pollutant Discharge Elimination System (NPDES) permit. Clean effluent is returned to the Scioto River (photo left). 

The average daily design capacity of the Southerly WRP is 114 MGD and can treat up to 330 MGD through full treatment and an additional 110 MGD through a Chemically Enhanced Primary Treatment system (CEPT). In addition to flow from its service area, Southerly can also receive flow diverted from JP through a flow diversion system and the interconnector sewer (photo below). 

Wastewater flow that reaches Southerly enters a set of mechanical coarse and fine screens before it is pumped to a vortex grit removal system. Next, flow is split between three trains: west, center, and east. Each train is nearly identical with the exception that west and center trains have rectangular primary clarifiers, and the east train has circular shaped primary clarifiers. 

Biosolids are treated and stabilized through anaerobic digestion to Class B standards, which reduces pathogens, minimizes odor, and decreases volume. A portion of the solids are taken to the Compost Facility where they are composted to Class A, exceptional quality standards and marketed to the public and other outlets as Com-Til mulch.

Like Jackson Pike, the Southerly plant is implementing an electrical cogeneration facility that will use methane gas to fuel boilers for process and building heat, and generate electricity for plant use.