SCH Number 2009031070

Project Info

Title

Arvin Waste Water Treatment Plant Expansion

Description

The Arvin Wastewater Treatment Plant is located in the southwest area of the City of Arvin. The Plant has been in operation since the early 1970's and was expanded in 1999 where the original consolidation ditch design was enhanced with the construction of an orbal oxidation ditch and clarifier. The WWTP is currently permitted to treat 2 MGD to a secondary treatment level. The objective of this project is to increase the design flow to 2.5 MGD and increase the efficiency of the existing plant. The project will combine the segregated treatment (oxidation ditch and orbal) systems into one homogenous system and incorporate nltrification/dentrification using combined Mixed-Liquor scheme. The expansion of the WWTP will include the following: a) Addition of Variable Frequency Drives on electric motors, b) Construction of a 250,000 gallon tank to serve as both an anoxic tank and a sludge storage tank, c) Removal of high speed splashing aerators and replacement with diffused air and submersible pumps, d) Installation of a Mixed-Liquor Pump Station, e) Construction of a third clarifier, f) Addition of a new sludge press, g) Construction of shelter and concrete pad for sludge dewatering, h) Installation of intertie piping and piping modification.

3 documents in project