Prepared a preliminary engineering report for the expansion of this wastewater treatment plant. The hydraulics of the plant were investigated and various piping improvements were identified to increase the hydraulic capacity of the plant. A third train of rotating biological contractors was constructed. Designed the recommended facilities.
This project is the fourth plant expansion designed for this wastewater treatment plant. The work has extended over a seventeen year period. The client has been so satisfied with the quality of the engineering work that the last three expansions have been sole-sourced.
Odor problems were studied and the headworks area of the plant was identified as the source of the odors. Various methods of odor control were evaluated. The report recommended that construction of odor control facilities be deferred since the nature and magnitude of the odor problems may change in the near future when pressure sewer systems are connected to the gravity sewer system and ferric chloride is applied in the sewers.