1 Pima County Regional Optimization Master Plan Arizona County Engineers Association Wickenburg, Arizona January 10, 2008 Michael Gritzuk, P.E., Director, Pima County Regional Wastewater Reclamation Department NORTH Aeration B asins C larifiers Adm inistration B uilding C entralLab B uilding S a n ta C r u z R i ve r D isinfection Prelim inary Treatm ent Existing R oger R oad W W TP A pproxim ately 48 acres W ater R eclam ation Cam pus Approxim ately 41 acres Proposed extentof screen enclosure Existing and Expanded Ina R oad W PCF A pproxim ately 160 acres Sports Park
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Pima County Regional
Optimization Master Plan
Pima County Regional
Optimization Master Plan
Arizona County Engineers Association
Wickenburg, Arizona
January 10, 2008
Arizona County Engineers Association
Wickenburg, Arizona
January 10, 2008
Michael Gritzuk, P.E., Director,Pima County Regional Wastewater
Reclamation Department
Michael Gritzuk, P.E., Director,Pima County Regional Wastewater
Reclamation DepartmentNORTHAeration Basins
Clarifiers
Administration Building
Central Lab Building
San
ta Cru
z River
Disinfection
Preliminary Treatment
Existing Roger Road WWTP
Approximately 48 acres
Water ReclamationCampus
Approximately 41 acres
Proposed extent of screen
enclosure
Existing and Expanded Ina Road WPCF
Approximately 160 acres
Sports Park
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Roger Road WWTP
Ina Road WPCF
Green Valley WWTF
Pima County Fairgrounds WWTF
Avra Valley WWTF
Corona de Tucson WWTF
Arivaca Junction WWTF
Marana WWTF
Mt. Lemmon WWTF
Rillito Vista WWTF
Randolph Park WRF
PCRWRDTreatmentFacilities
PCRWRDTreatmentFacilities
1
22
33
44
55
66
77
88
99
1010
1111
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Ina Road WPCF
Roger Road WWTP
Ina Road WPCFSewer Basin =
198 square miles
Roger Road WWTP
Sewer Basin =275 square
miles
TheMetropolitan
SewerageSystem
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Regional Optimization Master Plan Goals
Regional Optimization Master Plan Goals
• Current and future regulatory compliance
• Meet capacity needs to 2030
• Upgrade / rehabilitate aging infrastructure
• State-of-the-art technology
• Staff-friendly
• Automation
• Community acceptance
• Current and future regulatory compliance
• Meet capacity needs to 2030
• Upgrade / rehabilitate aging infrastructure
• State-of-the-art technology
• Staff-friendly
• Automation
• Community acceptance
N2 N2 O2O2
Clarifier
Waste SludgeRecycle Sludge
Ferment-ation
FirstAnoxic
Nitrification SecondAnoxic
Re-aeration
1 2 3 4 5
5-stage Bardenpho process (Source: EIMCO Water Technologies)
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Regional Optimization Master Plan Scope of Work
Regional Optimization Master Plan Scope of Work
Develop the optimal treatment process and plan to comply with regulatory requirements to reduce total nitrogen concentrations in discharged effluent
Master plan foreseeable future regulatory requirements
Determine the long-term capacity needs of the County metropolitan facilities, conveyance system and outlying growth areas
Develop the optimal treatment process and plan to comply with regulatory requirements to reduce total nitrogen concentrations in discharged effluent
Master plan foreseeable future regulatory requirements
Determine the long-term capacity needs of the County metropolitan facilities, conveyance system and outlying growth areas
Ina Road WPCF HeadworksIna Road WPCF Headworks
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Regional Optimization Master Plan Scope of Services
Regional Optimization Master Plan Scope of Services
Develop long-term plan for the treatment, handling and reuse of system bio-solids and bio-gas
Develop a detailed implementation schedule to meet regulatory implementation deadlines and the optimization master plan
Develop a financial plan to support the system’s regulatory and other needs for the next fifteen years
Develop long-term plan for the treatment, handling and reuse of system bio-solids and bio-gas
Develop a detailed implementation schedule to meet regulatory implementation deadlines and the optimization master plan
Develop a financial plan to support the system’s regulatory and other needs for the next fifteen years
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Regulatory Implementation Requirements to Reduce Total
Nitrogen Concentrations
Regulatory Implementation Requirements to Reduce Total
Nitrogen ConcentrationsIna Road WPCF Roger Road WWTP
Complete initial engineering study
Recommendation for upgrading treatment plants
Submit recommended
plan letter to ADEQ
February 1, 2007 January 30, 2007
Award contract for construction
December 31, 2010 January 30, 2011
Treatment of effluent to non-toxic nitrogen levels
January 30, 2014 January 30, 2015
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ROMP PlanROMP Plan
Expand Ina Road WPCF to 50 mgd
Construct new 32 mgd Water Reclamation Campus (in vicinity of existing Roger Road WWTP)