- Increased capacity of the existing lagoon from 600,000 gpd to 1,500,000 gpd.
- Had no disruption of treatment during construction.
- Total project costs of less than $250,000.
- Completed all work exclusively with Sanitary Board personnel.
Even more impressive is that in addition to the treatment facility improvements, Sanitary Board General Manager Tim “Bo” Patton and Joe Peterman, who comprise the entire Sanitary Board staff, completely replaced the main pumping station serving the Huntington Mall, installed a new 200 gpm submersible pumping station, 600 L.F. of gravity sewer lines and 1,900 L.F. of force main to serve the Merritt Creek Farm development; installed a new force main to the Barboursville Park and extended sewer service to new customers, all within the last year, besides operating and maintaining the existing lagoon, six pumping stations and over 20 miles of sewer lines. Except for equipment rentals, all of this work was accomplished by Sanitary Board staff.
The latest improvements to Barboursville’s treatment facilities began in early 2000. The Village was facing increasing demands for sewer service from developers, and their existing aerated lagoon, which had been initially upgraded in 1968 with the addition of mechanical aerators and baffling and again upgraded in 1985 with the addition of a flood wall and an effluent line to the Guyandotte River, had reached its rated capacity of 600,000 gallons per day. The Barboursville Sanitary Board initially considered constructing a new activated sludge treatment plant to meet their growing demand for wastewater treatment capacity. The Board opted to improve its existing lagoon when a study completed by Dunn Engineers, Inc. of Charleston, West Virginia showed that the lagoon could be upgraded to provide all of the required treatment capacity at a savings of over $3 million to Barboursville and its sewer customers.
The project began with a detailed survey of the lagoon and profiles of the lagoon’s bottom. To increase the lagoon’s capacity, water depth would be increased from five feet to seven feet to provide a total treatment volume of 25.2 million gallons and new baffling would divide the lagoon into six distinct treatment zones. Once the profiles of the lagoon bottom were accurately determined, new “Director” floating baffles, manufactured and supplied by Environetics, Inc. of Lockport, Illinois, were delivered to the site and installed by Tim Patton and his staff, along with the field representative from Environetics, Inc.
Proper baffling is crucial if optimum treatment efficiency is to be obtained from an aerated lagoon. The baffles must completely segregate the individual treatment zones, even when water levels fluctuate, and must prevent short-circuiting as water moves from zone to zone. The baffles must also maintain a good seal along the lagoon bottom.
After the “Director” baffles were installed, surface aerators were positioned in each of the first five treatment zones; the sixth and final zone is utilized as a settling basin and has no aerators installed in it. No new aerators were necessary for this project. Barboursville has meticulously maintained their four 25 HP Smith and Loveless Model MA-25 aerators which were originally installed in 1968, and had previously purchased another six 15 HP Aeration Industries AIRE-O2 floating aspirating aerators to supplement the Smith and Loveless units when necessary. By using five partially-mixed aeration zones in series, aeration and mixing horsepower has been kept to a minimum. The 25 HP units have been placed in the first four zones, while 15 HP units have been placed in the first, second and fifth zones. Three other AIRE-O2 units are held in reserve and placed into service when maintenance must be performed. Timers allow each aerator to be independently controlled to further reduce power costs.