SCH Number 2012052048

Project Info

Title

Wastewater Treatment Plant Facilities Master Plan and Phase I Immediate Improvements Project

Description

The project is designed to upgrade the WWTP for permit compliance. The primary objective of the project is to construct secondary treatment improvements needed to comply with new nitrogen removal standards placed on the City in 2010. Specifically, the City's existing oxidation ditches were not designed to remove nitrogen from the City's wastewater, and expansion and modification of the existing oxidation are necessary. In addition to construction a new (third) oxidation ditch, the WWTP improvements include: modifications to the existing oxidation ditches to provide the aeration control necessary for reliable nitrogen removal and the construction of a new (third) secondary clarifier. A number of improvements not directly related to the secondary process upgrade are also included in the project to address various capacity and condition deficiencies. Recommended improvements include: Supplemental mechanical dewatering equipment to increase solids handling reliability and flexibility, and preclude the need to construct additional liquid storage. Sludge lagoon improvements include aerators, a vehicle ramp, and a pedestrian stairway to provide safer access. Supervisory control and data acquisition improvements. Expansion of the Operations and Electrical Building to house additional staff. Modifications to the old Control Building to house additional staff. Modifications to the old Control Building to improve laboratory efficiency. Improved vehicle access to the Maintenance Building. Construction of covered storage to protect and extend the life of the mobile equipment currently parked outdoors. Retrofits to the headworks to replace worn screening equipment, to facilitate control of flow equalization, and to minimize the impact of peak flows on the performance of the secodnary and tertiary processes.

5 documents in project