City of Fairfield, Ohio
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City of Fairfield, Ohio
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Wastewater Treatment Plant History / Collection System History

Wastewater Treatment Facility

The City of Fairfield Wastewater Treatment Plant (WWTP) is rated as a Class IV Treatment Facility by the Ohio Environmental Protection Agency. Currently the plant treats an average daily flow of 5.5 Million Gallons a Day (MGD) and has a permitted capacity of 10 MGD. The treatment plant is an Activated Sludge plant with Anaerobic Sludge Digestion, producing a Class-B Biosolid. The nutrient filled Biosolid provides numerous farms in Butler County with an excellent fertilizer.

1965: A 2 Million Gallon per Day (MGD) Treatment Plant and Collection System was constructed to serve the City of Fairfield, Ohio. The original plant was a very basic treatment facility consisting of a Pumping Station, two Primary Settling Tanks, two Activated Sludge Aeration Tanks, a Secondary Settling Tank, two Anaerobic Digesters, and 8 Sludge Drying Beds.

**In 1974 Congress enacted the Safe Drinking Water Act (SDWA)(P.L. 93-523, 88 Stat. 1660) to protect quality of both actual and potential drinking water in the United States. This drastically changed the standards of operations of Water and Wastewater treatment plants around the country. To learn more click on this Safe Drinking Water Act link.

1974: It was necessary for the treatment facility to expand to treat daily flows of up to 6 MGD. A second  Pumping Station was constructed, additional Primary Settling Tanks and Activated Sludge Aeration Tanks were built, a Filtration Building was added, two more Anaerobic Digesters were built, and a Chlorine Stabilization System was constructed to disinfect the plant's effluent.

1988: The secondary treatment system was upgraded by building  two new Clarifiers  to treat a design maximum flow of 10 MGD. A Sludge Thickening Building was constructed with a Dewatering Gravity Belt Thickener. Also a Fine Bubble Aeration System was installed to enhance the Activated Sludge treatment process, and reduce energy consumption dramatically. The City of Fairfield was the first treatment facility in the United States to take advantage of the advanced Fine Bubble Aeration Technology.

1995: A Klampress was installed in the Thickener Building. This allowed the facility to move to a solids handling program from a liquid removal program. The press's final product is a nutrient filled Class B Biosolid which provides numerous farms in Butler County an excellent fertilizer. The installation of the Klampress reduced sludge hauling costs dramatically.

1997: The facility's 3 Equalization Basins were constructed, giving the facility 10 million gallons of storage capacity which can be utilized during high flow events caused by heavy rainfall.

2000: The facility received a hydraulic upgrade to the Primary System and Flow Distribution Chamber which allowed the plant to be re-rated to a permitted capacity of 10 MGD. Upgrades to the plant's Grit Collector were completed. Fixed lids were installed on Anaerobic Digesters 1 and 2, providing better insulation, more storage capacity, and a better all around anaerobic process. A new plant boiler was also installed which uses the methane gas created by the Anaerobic Digestion Process to satisfy the facility's need for heat.

2002: The facility switched from Chlorine disinfection to Ultraviolet light disinfection. Ultraviolet light is the natural, environmentally friendly alternative to chemical disinfection. Also a more efficient blower which provides air to the Activated Sludge Process was installed saving on energy consumption.

2005: The Secondary Treatment System received a hydraulic upgrade creating a smoother path for the systems final effluent. Also the facility's Parshall Flume was upgraded to a  3 foot Flume which has a flow capacity of 43 MGD.

2010: The facility conducted a Bio Win study. Bio Win is a cutting edge computer software that data is entered into which generates a model of a Wastewater Treatment Plant's biological and mechanical process. The data entered into the software is specific to our Treatment Facility. Tank capacities, dissolved oxygen levels, plant flows, and plant flow characteristics are a couple examples of the data entered into the software. The research project was very sample intensive. Samples were collected throughout  the plant's treatment process, and tests were run on the samples to determine certain characteristics such as phosphorus, ammonia, and BOD amongst many other parameters. The study was conducted in anticipation of the Ohio EPA setting  limitations on phosphorus and total nitrogen for the plant's final effluent. When the Ohio EPA does set limitations, the facility will have to go through a major upgrade, tankage will need to be added, and process will need to be implemented in order to treat phosphorous and total nitrogen biologically.

2013: The facility upgraded its SCADA System to Rockwell Control Logics. The upgrade was performed in house saving Fairfield's rate payers hundreds of thousands of dollars. 

Currently: There are numerous projects lined up in the facility's Capital Improvement Project Program. The employees at the plant take great pride in trying to stay a step ahead of the ever growing demands in the Wastewater Treatment Industry.

 

Collection System

The City of Fairfield's wastewater is collected by a network of private laterals and main sewers. With the help of 12 lift stations, the system flows by gravity to the Wastewater Treatment Facility. The City's sewer collection system contains over 4,300 manholes and over 175 miles of sewer pipe in sizes ranging from 8 inches to 42 inches in diameter.

1993: The collection crew completed recording the City's entire sewer collection system on Video Cassette Recorder tapes. This gave the Wastewater Treatment facility visual access to every sewer line in the City.

1997: Construction was completed on a 25 MGD Relief Sewer Pumping Station, 9 overflow structures, 4.6 miles of force main, and a 10 MGD equalization basin. This project was initiated to take the demand from the collection system during high flow events caused by heavy rainfall. The Relief Sewer Project has saved residents of the City hundreds of thousands of dollars in flood damage costs.

2001: All of the Pump Stations' Communications Systems were upgraded to Mission's Communications. Mission's Communications allows the Pump Stations to communicate with the Wastewater Treatment facility and/or  the collection crew when the station has a problem. The Geographical Information System (GIS) was completed. GIS is the entire collection system, sewer lines, sewer laterals, lift stations, manholes, etc. mapped out and saved digitally.

2004: The Happy Valley Drive Relief Sewer Project was completed. 3,436 feet of sewer pipe was installed from Happy Valley Ct. to Rolling Hills Swim Club in diameters ranging from 15 to 18 inches.

2005: On-site generators were installed at Fairfield Village, Seward Road, Lake Manor, and Route 4 Pumping Stations to keep the stations up and running during power outages. Gilmore Road Pumping Station was  completely renovated. A new Digital Video Sewer Inspection Television truck was purchased. The collection crew is currently working on digitally recording the entire sewer collection system. 

2009: On-site generators were installed at Homeward Way, and Sugarland Pumping Stations.

2014: Seward 1 Lift Station was relocated. The Lift Station was reconstructed with more pumping capacity in order to support economic development. 

Up To Date: There have been 253 Lining Projects consisting of 59,198 feet of sewer pipe being lined. 873 Manhole Rehabilitation Projects have been completed. The Rehabilitation Project and Lining Project prevent storm water from infiltrating the collection system.

Currently: The collection crew is hard at work on a number of different projects. The current Sanitary Sewer Cleaning Program has the City divided into 7 areas with the cleaning crew cleaning one area per calendar year. This allows the City's entire sewer collection system to be cleaned once every 7 years. The video inspection crew is currently digitally recording the enitre collection system, completing 70,000 to 90,000 feet of sewer pipe each year, with a goal set to complete by the year 2021. The crew also preforms 200 to 300 Miniature Camera inspections of residential sewer laterals per year. The collection crew is hard working and dedicated to serving the residents of Fairfield with pride.