SSIP Annual Reports 2015 Annual Report | Page 10

Treatment
“ The new headworks will improve the treatment efficiency of screening and grit removal , while maximizing the control of odors .”

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Treatment

Project 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
Annual Report 2015
Southeast Plant
One would be amazed to see what is mixed with wastewater when it first enters the treatment plant – sticks , stones , sand , heavy solids , and other inorganics referred to as “ grit ”. The function of a headworks unit is to remove grit 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 units . In 2015 , our team completed preliminary design . And because we can ’ t stop processing wastewater while the new unit is being added , we developed a construction sequencing plan that will allow the SEP to function reliably throughout construction ..
In order 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 .