Reverse Osmosis Water Treatment Plant, City of Manalapan, Florida

Start Date: Nov 2003
Completion Date: May 2006
Delays: Concentrate Permit
Liquidated Damages: None
Change Orders: None
Contact: Mark Hull, Utility Director, Town of Manalapan, FL

The Water Treatment Division of Layne Christensen Company was contracted through Wharton-Smith by the City of Manalapan, Florida to provide a nominal 2.35 MGD reverse osmosis (RO) water treatment system. The project is a design-build project that was able to utilize Layne's vast process and system design capabilities. Layne provided design assistance for the water treatment process including detailed design of the process trains to CP&H, the design-build team's engineer.

The process design includes two separate trains each capable of producing 0.85 MGD of permeate at 80-percent water recovery with an estimated 0.65 MGD well water blend flow for a total of 2.35 MGD potable water. The system uses a hybrid membrane system utilizing Hydranautics low-pressure RO membranes with CPA3 elements in the first stage and ESPA4 elements in the second stage. The two treatment trains are designed to be started automatically by the water treatment plant operators. They will be able to initiate operation of either process train through the computer control system.

This will initiate the start-up operational sequence including the well pump(s), chemical feed systems, high-pressure pump(s) and valve positioning.

Layne's scope included providing process design, equipment design, fabricate and install the two low-pressure RO water treatment units, chemical pretreatment equipment, cartridge filter housings, chemical post-treatment equipment, a clean-in-place (CIP) system and all piping inside the building.