SCH Number 2005122104

Project Info

Title

City of Alturas Wastewater Treatment Plant Upgrade Project

Description

The proposed project will upgrade the existing comminuter to an influent sewage grinder in the Headworks; include improvements to the primary clarifier; upgrade the trickling filter media with high efficiency plastic media to improve the BOD removal efficiency to meet the 17.0 mg/L average daily concentration and the Total Suspended Solids 12.9 mg/L average daily concentration. The proposed project will raise the trickling filter block walls to increase the filter bed capacity and replace the underdrain system. The proposed project will upgrade the effluent filter pumps and controls to variable frequency drive pumps; add a secondary clarifier and splitter structure to better control the solids concentration and improve the disinfection efficiency; and double the size of the chlorine contact chamber to provide adequate contact time. The proposed project will include the installation of concrete sludge drying beds with an underdrain system to comply with the current policies of the Central Valley Regional Water Board; a new Operations Building; slip-lining 2,400 lineal feet of the collection system to reduce infiltration and inflow; and upgrading the collection system lift stations at 4th Street, 8th Street, and 12th Street with submersible pumps to improve operational efficiency.

3 documents in project