MBR Membrane Replacement

MBR Membrane Replacement | 0.36 MGD

Yakama, WA

intall time

24 HRS

2025 project overview​

Project Category : Retrofit

Project Type : Membrane Products (Part-for-Part)

Scope : Turnkey

Previous Membrane : BIO-CEL 416 (Flat Sheet, Polymeric)

Installed Membrane : BIO-CEL L+ (Flat Sheet, Polymeric)

Status : Operational

DESCRIPTION

MMBR helped deliver the Yakama Nation tribal WWTP in 2008. When the original MBR system needed more capacity, MMBR upgraded the plant in 2017 from rigid-plate Kubota ES-200 SMU membranes to flexible flat-sheet BIO-CEL 416 modules, doubling capacity from 0.18 to 0.36 MGD. In 2025, after nearly nine years of successful operation, MMBR supported a second backward-compatible upgrade to BIO-CEL L+ for added performance and safety margin.

The part-for-part replacement was coordinated with plant operators and took approximately 24 HRS of scheduled, phased downtime.

The project highlights MMBR’s ability to extend plant life and solve capacity constraints with practical aftermarket solutions.

The MMBR team has provided excellent support from the original design of this plant and through the expansion. They are knowledgeable, responsive, and great partners.
Kenny Grasser
Lead Operator

HIGHLIGHTS

Project History :
Greenfield (2008), Upgrade (2017), Parts Supply (2025)
Wastewater Type(s) :
Municipal
Application(s) :
Residential
Discharge Type(s) :
Discharge

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