PUBLIC SERVICES AREA CRAIG HUPY, AREA ADMINISTRATOR CHUPY@A2GOV.ORG
PUBLIC SERVICES AREA Public Services Units *Wastewater Treatment Plant *Systems Planning *Engineering Water Treatment Plant Public Works
WASTEWATER TREATMENT SERVICES EARL J. KENZIE, P.E., MANAGER EKENZIE@A2GOV.ORG
WASTEWATER TREATMENT SERVICES Contact: Overview 49 Old Dixboro Road History Ann Arbor, MI 48105-9405 Major Capital Projects (734) 794-6450 Treatment Processes Challenges
WASTEWATER TREATMENT SERVICES STAFF 33 Full Time Employees Manager 1 position Assistant Manager 1 position WWTS Engineer 1 position Water Utility Supervisor 5 positions Maintenance Supervisor 1 position Water Utility Technician 17 positions SCADA Administrator 1 position Inventory Control Technician 1 position Administrative Assistant 2 positions Electrical/Control Systems Technician 3 positions
Wastewater Treatment Services Operating Budget: $15,269,985 Operate and maintain the wastewater treatment system; including the Wastewater Treatment Plant, eight sewage lift stations and industrial pretreatment program.
WASTEWATER TREATMENT SERVICES OVERVIEW Geddes Rd. US 23 Old Dixboro Rd. Located in Ann Arbor Township
WASTEWATER TREATMENT SERVICES OVERVIEW Services Ann Arbor Township, Scio Township, and Pittsfield Township in addition to the City of Ann Arbor Services approximately 130,000 people Staffed 24/7 by certified, trained technicians Operations regulated by State and Federal agencies Permitted capacity at 29.5 mgd Average daily flow is 18.4 mgd
WASTEWATER TREATMENT SERVICES HISTORY
WASTEWATER TREATMENT SERVICES HISTORY
WASTEWATER TREATMENT SERVICES HISTORY
WASTEWATER TREATMENT SERVICES HISTORY
WASTEWATER TREATMENT SERVICES HISTORY
WASTEWATER TREATMENT SERVICES HISTORY
WASTEWATER TREATMENT SERVICES HISTORY
WASTEWATER TREATMENT SERVICES HISTORY Old West Plant – 9.5 mgd Newer East Plant – 20 mgd 1936 – 1964 1977
RESIDUALS HANDLING IMPROVEMENTS Construction Schedule Start: February 2009 Completion: June 2012 Construction Budget Approximately $45.5 million ACEC Awards MI Engineering Honorable Conceptor Award – 2013 National Recognition Award - 2013
GRAVITY BELT THICKENER
SOLIDS HANDLING BUILDING
TRUCK LOADING FACILITY
FACILITIES RENOVATIONS PROJECT Construction Schedule Start: June 2012 Completion: August 2017 Construction Budget Approximately $100 million ASCE Awards MI Section Outstanding Civil Engineering Award – 2017 SE MI Outstanding Civil Engineering Project of the Year Award - 2017
FACILITIES RENOVATIONS PROJECT FRP Objectives Replacement of West Plant Plant-wide Infrastructure Rehabilitation Improvements to East Plant Complex Design and Construction Six years to complete design Five plus years to construct Numerous regulatory and site challenges
FACILITIES RENOVATIONS PROJECT STATE FUNDING State Revolving Fund $110,305,000 in State Revolving Fund low interest loan with deferred repayment $2,592,168 in loan principal forgiveness for green project features $256,153 grant for reimbursement of engineering design fees Michigan Department of Treasury Estimated $1.5 M savings from sales tax exemption for contractor purchases
WEST PLANT DEMOLITION
UTILITIES DUCT BANK
CLARIFIER WALL CONSTRUCTION
PRECONSTRUCTION AERIAL VIEW
AERIAL VIEW – AUGUST 2013
POST CONSTRUCTION AERIAL VIEW
FACILITIES RENOVATIONS PROJECT
WASTEWATER TREATMENT PROCESSES Liquid Treatment Solids Removal Primary Screenings Physical Grit Secondary Fats, oils & grease (FOG) Biological Biosolids Chemical Lime stabilization and subsurface land application Physical Centrifuge dewatering and landfill disposal Tertiary Physical Disinfection Ultra-violet (UV)
BIOSOLIDS CENTRIFUGE
CENTRIFUGED BIOSOLIDS
LAND APPLICATION OF LIQUID BIOSOLIDS
WASTEWATER TREATMENT SERVICES CHALLENGES Active RR Track Single Access Rd. Huron River Fleming Creek
WASTEWATER TREATMENT SERVICES CHALLENGES NPDES Permit Requirements Odor Management Long-term Biosolids Management Strategy Energy Management to Increase Sustainability Succession Planning to Ensure Knowledgeable Workforce Aging Infrastructure Changing Federal or State Regulations
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