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WE’VE GOT THE ELEMENTS COVERED
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BLACK & VEATCH HAS ALREADY DEVELOPED A 3D/BIM MODEL OF THE SOLIDS HANDLING FACILITY THAT IS THE FOUNDATION FOR MOVING THE PROJECT QUICKLY TO THE NEXT PHASE OF DESIGN
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SLUDGE BLENDING/STORAGE
LIME ADDITION
CENTRIFUGE DEWATERING SYSTEM
MULTIPLE HEARTH FURNACES
AIR POLLUTION CONTROL
SCB SEISMIC RETROFIT
ASH HANDLING AND LOADOUT
EMERGENCY SLUDGE LOADOUT
Well mixed sludge with suitable storage to promote consistent and optimum dewatering that provides stable and reliable MHF operation
Reduce lime addition to provide multiple benefits (reduced cost, added MHF capacity) but manage risks, e.g. slagging in MHFs
Optimized cake solids feed to MHF that provides stable operation and reduced auxiliary fuel use
Extend the reliable operation of the MHFs for 20+ years
Long term compliance with SSI MACT 129 rule requirements, in addition to upcoming and future BAAQMD regulations
Seismic deficiencies of the existing SCB structure must be rectified in order to ensure safety during DBE and MCE conditions
Improve ash handling facilities to ensure compliance with SSI MACT 129 fugitive ash requirements; ensure reliable operation
Maximize use of existing, recently constructed asset; restore facilities to intended service
Unsuitable tank size and configuration makes operation and mixing difficult
Lime is likely being overdosed for optimizing balance between cost and risk; lime storage capacity is inadequate
Existing centrifuges are at end of service life, with frequent, costly maintenance and poor reliability
Outdated burners and afterburners, center shaft drive systems, combustion air blowers, and controls
Existing single venturi/ impingement wet scrubber utilizes outdated technology and is unable to meet regulatory requirements
Shear walls, moment connections, steel moment frame members, and braced frame connections are inadequate
Existing ash system is at end of service life and does not allow for reliable compliance with regulatory requirements
Existing facility is typically idle, but when brought into service, equipment does not function satisfactorily
New SBTs sized for thorough mixing and good operability; repurpose existing SBT and improve mixing to provide suitable storage for emergency and peak solids loading needs
Full scale pilot testing to provide sound basis for a properly sized lime feed system with flexibility to properly dose optimum lime quantities
Four new latest technology centrifuges and cake pumps to provide reduced power use, improved operability, and consistent, optimum solids feed to MHFs
Improvement and replacement of outdated elements to extend reliable operations of the MHFs; seismic retrofits to increase safety and reliability
Two new state-of-the art wet scrubbers capable of handling bypass events and achieving regulatory compliance
Building strengthening seismic retrofit improvements, including new shear walls and new steel bracing
New ash handling and loadout system capable of regulatory compliance and in-line with preferred means of disposal
Improvements to facility to restore functionality, possibly coordinated with improvements to ash load out
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OBJECTIVE
CURRENT ISSUE
RECOMMENDATION