Water Department Projects
Sugar Creek Water Treatment Plant Upgrade
The City of Lebanon contracted with Butler, Fairman & Seufert Engineering and Bowen Contractors to do a design build project for the replacement of the Sugar Creek Filters. The old filters were old Paddock Filters that were installed when the Treatment Facility was built in 1980. The Paddock Filter Company has built only 10 of these filters and Lebanon has 2 of them. The filters were placed on the concrete tank structure and the Treatment Facility was built around them. The filters have been reinforced and modified to extend their life but it was determined that after a thorough inspection the filters were at the end of their life. So Lebanon Utilities with the help of the engineering services of Butler, Fairman & Seufert investigated the use of a Guaranteed Savings system based on energy savings concept. This concept was advertized on the market and Bowen was the applicant chosen.
Lebanon Utilities then sat down with Engineers and the Contractor to develop the scope of the project and determine the guaranteed cost. Once this was complete the project was then brought back to the Utility Service Board to approve, modify or decide not to do anything at this time. The Board chose to approve the project.
The project consists of adding a new aerator and replacing the 2 existing filters which are 10’ in diameter and 38‘ long with three filters of equal size and capacity. This will take the plant capacity from a 3 (million gallon per day) mgd to 4.5 mgd. This will enable us to take one filter down for cleaning and still meet demand. It will also allow us to backwash the system without pulling from the system. These are two great benefits to our customers. The new system will allow us to reduce the backwash rate by substituting an air scour system. This is supposed to improve the efficiency of the backwash process and reduce the amount of water used to clean the filters as well as reduce the power demands. This will make the plant more energy efficient and at the same time improve production.
The project required the contractor to install valves and blind flanges to cut out one of the filters. Once one of the filters was cut up and removed the generator was temporarily moved out of the way to make room for the filters to be slid under the roof by a crane. Once the filters were slid under roof the generator was put back in place and connected to the system. The aerator was also slid into place and connected to the wet wells by piping. The next step is to level the filters and pour a base for them. The walls have been reconstructed. The media will be installed and the tanks connected to the piping gallery. The electrical controls and air system will then be connected to the system. The work should be completed in April of 2012.
| New Filter being placed in the Sugar Creek Water Treatment Facility | |
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