Pflugerville,  Texas

This project involves expanding the City’s surface water treatment plant from 17.7 MGD to 30 MGD, with an ultimate buildout to 75 MGD. The project includes expansion of the existing lake pump station and high service pump station, adding a new pretreatment process that consists of coagulant using ACH, three-stage flocculation and high-rate plate settles to address raw water quality fluctuation, expansion of a submersible membrane system, adding a new chemical facility (aluminum chlorohydrate, sodium hypochlorite, liquid ammonium sulfate), a new copper ion generation system for zebra mussel control, and new chlorine contact basin to reduce DBP formation and enhance disinfection CT compliance.

Project Highlights:

• Expansion of raw water pump station by adding new vertical turbine pumps
• Construction of new high service pump station with vertical turbine pumps to deliver treated water to a new pressure plane
• New pretreatment system with three-stage flocculation process and plate settlers to maintain a steady feed water to membrane system
• Retrofit existing submersible membrane system.
• New solids handling system with gravity sludge thickeners, thickened sludge pump station, backwash clarifiers, and recycle pump station