Expansion of Juanita Millender-McDonald Carson Regional Water Recycling Facility

Client: West Basin Municipal Water District
Location: Carson, CA

Hazen has designed two innovative membrane systems as part of an upgrade to the Juanita Millender-McDonald Carson Regional Water Recycling Facility in Carson CA. A tertiary membrane bioreactor will provide reliable treatment of to meet ammonia removal from tertiary treated effluent for nearby industrial cooling tower use. A new custom engineered microfiltration system, capable of fitting six different membrane module types, will replace existing 20 year old technology as pretreatment to reverse osmosis with the final product used for industrial boiler feed.

A new custom engineered microfiltration system, capable of fitting six different membrane module types, will replace existing 20 year old technology as pretreatment to reverse osmosis with the final product used for industrial boiler feed.

A rendering of the 2.5 mgd tertiary membrane bioreactor. The bioreactor will remove ammonia from tertiary treated municipal effluent used to supply cooling tower feed for a nearby oil refinery.

Project Outcomes and Benefits

  • Design and construction management support for 2 mgd tertiary membrane bioreactor.
  • Design and construction management of replacement 6 mgd microfiltration system.
  • Detailed and customized procurement packages for both membrane systems.
  • Design of backup power supply and potable water connection.

West Basin provides recycled water for a variety of purposes including seawater barrier recharge and various industrial end uses. Secondary effluent is pumped from the City of Los Angeles’ nearby Hyperion Wastewater Treatment Plant to West Basin’s facility at El Segundo, CA, where it is further treated via a number of parallel treatment processes including coagulation and filtration to produce high quality tertiary recycled water, as well as membrane desalting processes for industry.

Approximately 12 mgd of tertiary recycled water is pumped from the El Segundo facility to the Juanita Millender-McDonald Carson Regional Water Recycling Facility, where it is further via two parallel treatment trains; ammonia removal to supply cooling tower make up water and a membrane desalination train to provide boiler feed make up water.

West Basin engaged Hazen to provide 100% design and construction management support for a 2.0 mgd tertiary membrane bioreactor as an upgrade to the existing removal process. In addition, 100% design of a replacement microfiltration system as part of the membrane desalting train has been included.
Both of the membrane treatment systems are innovative designs, this being one of only a few tertiary membrane bioreactors. The microfiltration system is also adopting an open platform custom design approach.

For more information on this project, or to discuss a similar project in your area, contact Troy Walker at twalker@hazenandsawyer.com