Wastewater Treatment Plant Virtual Tour
Welcome to the virtual tour of Springfield’s Wastewater Treatment Plant. In addition to this site, the plant proudly gives tours to small groups of students, businesses, organizations, and individuals from around the city. If you would like to schedule a tour of the facility or have questions about the processes on this page, please call the plant at (937) 324-7626.
The Wastewater Treatment Plant is an advanced secondary plant located at 965 Dayton Avenue in Springfield, Ohio. Constructed originally in 1935 as a primary treatment facility designed to treat 25 MGD average with a peak of 30 MGD, the Wastewater Plant has had several improvements in 1961, 1972, 1988, 1995 and 2000, upgrading it from primary treatment to an advanced secondary facility. The plant is designed for an average flow of 25 MGD. The plant’s actual average flow is 15.5 MGD. During rain and storm water events the plant can handle a flow of 36 MGD peak and 34 MGD sustained. The design detention time for the plant is 12.8 hours in the summer and 14.8 hours in the winter. The Wastewater Treatment Plant has an average removal rate of 97% for TSS, 98% for C-BOD, and 98% for Ammonia.
The plant is manned 24 hours per day, 7 days per week with one operator per shift. The plant operator is responsible for the daily operations. The operator watches over the plant’s Supervisory Control and Data Acquisition (SCADA) system and makes manual adjustments as needed. The operators collect samples and run the following tests. The results are recorded on the operator’s daily log or to the plant’s remarks log.
- Influent: Settleable Solids, ph, Temperature, and Flow
- Primary Tanks: Sludge Core Depth
- Primary Sludge: Visibly Gauge the Sludge Consistency
- Primary Effluent: Settleable Solids
- Returned Activated Sludge: Settleable Solids
- Mixed Liquor: Settleable Solid
- Waste Activated Sludge: Settleable Solids
- Chlorine Basin Effluent: Chlorine Total Residual and Flow
- Plant Effluent: Chlorine Total Residual, pH, Temperature, and D.O.
- Secondary Digester: Supernatant 100 ml Cylinder Test and Temperature
There are 12 Programmable Logic Controllers (PLCs) that run the plant’s SCADA system. They communicate to each other through a fiber optic cable that loops all 12 PLCs together. The PLCs are connected to four PCs that run a SCADA program called WonderWare. The operator can control 95 percent of the plant through the WonderWare. The WonderWare also records up to 245 data points to an Excel spreadsheet every hour.
A single operator is responsible for the overall operation of the plant during their shift. They record various readings, perform various tests and evaluate the data to verify that each of the processes are operating at their peak performance. This ensures that we maintain a high quality effluent to the river. Changes to the system are conducted by changing valving arrangements, operating pumps, placing equipment on/off line and other tasks. As problems occur, the operator is also responsible for making the necessary changes to the system to maintain maximum flow through the plant. Operators also maintain security.
To maintain 24 hour operations, we have a staff of seven operators: first shift, second shift, third shift, swing shift, a dedicated relief shift and two relief shifts. Our relief shift operators work as maintenance personnel until they are needed to cover a dedicated operators’ shift. Again, there is only one operator per shift. They are all licensed by the Ohio Environment Protection Agency, with certifications ranging from Class I to Class III. They operate under the Plant Superintendent, who maintains a Class IV license.
The laboratory is responsible for the testing of rivers, industries and various wastewater streams that enter or are formed through the treatment of the wastewater. These analyses allow us to verify that a process is performing properly, verify the degree of treatment through the plant, test for undesirable constituents, and other parameters that may be necessary. Some of the more standard tests include: CBOD (Carbonaceous Biochemical Oxygen Demand), pH, various forms of Nitrogen, phosphates, hardness and many others. Our personnel also perform specialized tests, such as metals in the wastewater and sludge streams. These tests are conducted under strict adherence to OEPA standards to ensure conformance to water quality standards. Other duties include CSO (Combined Sewer Overflow) sampling, cleaning of equipment and administrative duties.
The plant laboratory is staffed with four Laboratory Technicians. Each technician is required to maintain an OEPA Class II Operator Certification. While not required, most technicians have Wastewater Analyst Certification as well. The laboratory hours are Monday through Friday, 7:00am to 3:30pm.
Our maintenance staff is responsible for maintaining equipment operability through preventive maintenance, equipment replacements, equipment modifications or any number of other tasks to ensure that our plant is operating at maximum capacity and maximum efficiency on a continuous basis. Preventive maintenance is important to prevent equipment failure at times when that equipment is most needed. As equipment wears out, it must be rebuilt or replaced. When a system does not operate as intended, it may require modification. Our qualified maintenance staff possess the abilities and tools to do the work and think through problems.
The maintenance staff consists of various abilities and specialties. Three Maintenance Mechanic II personnel perform the more technical aspects of maintenance and repair. Two Maintenance Mechanic I personnel perform routine tasks and aid the Maintenance Mechanic II workers. We also have two electricians on staff to conduct repairs to the PLC system, various motors, valve operators and other electrical systems and components. Supporting staff also includes a Belt Filter Press Operator, a seasonal grounds keeper and a custodian. The maintenance staff work from 7:00am to 3:30pm Monday through Friday.