12
Treatment
Headworks team visits Oregon
treatment facility to learn about grit
handling technology
“The new
headworks will
improve the
treatment efficiency
of screening and
grit removal, while
maximizing the
control of odors.”
– JIGNESH DESAI,
HEADWORKS PROJECT MANAGER
For more information on
the SEP click here
Southeast Plant
One would be amazed to see what is mixed with wastewater when
it first enters the treatment plant – sticks, stones, sand, bricks, and
other inorganics referred to as “grit”. The function of a headworks
facility is to remove the aforementioned from the wastewater
stream to protect and reduce wear on the downstream process
equipment. The SSIP includes a New Headworks Facility Project at the
Southeast Treatment Plant (SEP) that will replace and consolidate
the two existing aging headworks facilities. In 2015, our team
completed the Conceptual Engineering Report (CER), which serves
as the basis for developing the preliminary design. Because we can’t
stop processing wastewater while the new facility is being built, we
developed a construction sequencing plan that will allow the SEP to
function reliably throughout construction.
In order to help us design the full scale headworks facility, a largescale grit pilot test ran from April - December 2015. The project team
operated the pilot units under various flow configurations and took
grit samples throughout the pilot testing. The data is being evaluated
to make a recommendation on the best technology for the grit
removal process.
This year the Alternative Analysis Report (AAR) was completed for
the Southeast Plant Seismic Reliability and Condition Assessment
Improvements Project, which will provide structural rehabilitation for
existing facilities to accommodate all of the new projects. In 2016,
the Disinfection Upgrades Project and the Primary and Secondary
Clarifiers Upgrade Project will begin construction to improve
operations and address the aging infrastructure to help ensure that
cleaned, treated water is released into the Bay.
You can learn more about these projects during one of our SEP tours,
which are listed on our events calendar.
SSIP Annual Report 2015