PIONEERING PELLET SOFTENING TREATMENT IN PENNSYLVANIA
Transcript of PIONEERING PELLET SOFTENING TREATMENT IN PENNSYLVANIA
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PIONEERING PELLET
SOFTENING TREATMENT
IN PENNSYLVANIA
April Winklmann Authority Manager, MTJMA
Jared Hutchins Engineering Manager, Black & Veatch
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Project Background and Drivers
Process Equipment Procurement and Facility
Design
Construction Update
AGENDA
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AUTHORITY MANAGER, MTJMA
APRIL WINKLMANN
PROJECT
BACKGROUND AND
DRIVERS
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• Armstrong County, PA
• 5 staff
• Customers: Manor Township,
Manorville Borough, and Ford Cliff
Borough, as well as some areas of
Rayburn, Bethel, Valley, and
Kittanning Townships
• +2 Consecutive Systems
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Manor Township Joint Municipal Authority (MTJMA)
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• Brine discharge from current ion exchange process to be discontinued
• Lack of redundancy at existing WTP
• No clearwell at existing WTP
• Aging WTP infrastructure
• Limited ability to expand for future demand
• Additional demand by consecutive systems
Black & Veatch 6
Project Drivers
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• April Winklmann hired as MTJMA Manager in 2012
• Prior investigation of process for manganese removal
• Recommended the process be investigated for calcium hardness
• Pilot Study in 2012
• Double blind taste test
• RFP for Engineering Services
• Open communications with PADEP
Black & Veatch 7
Pellet Softening Enters the Picture
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• Technology Evaluation by Black &
Veatch in 2014
• Proven technology capable of
meeting performance requirements
• Pool of qualified vendors
Technology Evaluation
Pellet Softening Technology Recommended for Detailed Design
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• Condition of existing plant
• New consecutive system being built simultaneously
• Timing of changes from old plant to new plant and well pump selections
Black & Veatch 9
Challenges - Timing
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• Limited space at existing WTP
• Three of four wells at WTP site
• Residential setting
• Soil conditions
• Varied size of pellet softening equipment
Black & Veatch 10
Challenges – Facility Space & Existing Conditions
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• Anticipated rate increases
• PennVest Loan
• ~$8.5M, Project at over $9M
Challenges – Budget
Black & Veatch 11
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• Taste is important!
• Resistance to chemical usage
• Clearwell, wet well, pumping modification
• Cost and rates
Black & Veatch 12
Challenges – Board Acceptance
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• Previously unseen technology for veteran employees
• Young staff, still gaining experience
• Limited training/coursework availability
Black & Veatch 13
Challenges – Staff & Technology
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• Ability to start and stop operations
• Caustic injection point
• Lime requirement from pilot would have changed outcome
• High freezing points for caustic and sulfuric acid
• Recarbonation vs. sulfuric acid
• Gravity vs. pressure filter
Black & Veatch 14
Challenges – Other
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ENGINEERING MANAGER, BLACK & VEATCH
JARED HUTCHINS
PROCESS
EQUIPMENT
PROCUREMENT &
FACILITY DESIGN
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Average Day Maximum Day
Current 0.6 MGD 1.3 MGD
Design 0.6 MGD 1.4 MGD
Future 1.4 MGD 2.1 MGD
Black & Veatch
WTP Design Flows and Anticipated Raw Water Quality
Parameter Average Range
pH (standard units) 7.5 7.3 – 7.6
Alkalinity (mg/L as CaCO3) 115 90 - 150
Calcium Hardness (mg/L as CaCO3) 160 110 - 200
Total Hardness (mg/L as CaCO3) 210 130 - 280
Iron (mg/L) 0.25 <0.02 – 1.97
Manganese (mg/L) <0.02 <0.02 – 0.04
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• 1.4 MGD initial capacity
• Expandable to 2.1 MGD
• New facility located adjacent to
existing WTP
• Raw water feed from four existing
wells
Basis of Design
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18 Black & Veatch
Procured Equipment
Process Schematic
WELL
PUMPS REACTOR
FILTER CLEARWELL
BACKWASH
PUMPS
HIGH
SERVICE
PUMPS PELLET
DISCHARGE
SODIUM
HYPOCHLORITE
SPENT FILTER
BACKWASH
SAND &
SODIUM
HYDROXIDE
SULFURIC ACID
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• STSFE
• Conical Pellet Softening
Reactors
• Horizontal Enclosed Filters
• Ancillaries, Controls
• Pump Units
Equipment Procurement
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Startup, Commissioning & Training Support, Performance
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20 Black & Veatch
Site
Location
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Black & Veatch 21
Site
Plan
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Black & Veatch
Process Layout
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Black & Veatch
Building Configuration
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• 0.7 MGD per unit
• 2 units, space for a third
• 8.5 ft diameter
• 24.5 ft in height
Pellet Softening Reactors
Supplied by WesTech
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OUTLET & OVERFLOW (BACKSIDE)
CATALYST BED
CHEM FEED
SAMPLE PORTS
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• 2 filter cells per vessel
• 2 vessels installed initially, space for
future third
• Two vessels rated for 1.4 MGD
with one cell in standby
• Dual medial with anthracite and
sand
Filter Vessels
Supplied by WesTech
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• Seed material for pellet generation
• Fine silica sand
• Initial loading, then periodic
recharge after blowdown
• Sand slurry injection with plant
service water
Sand Feed
Vertical Reciprocating Conveyor promotes sand recharge from top
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• Caustic, Sulfuric Acid by STSFE
Supplier
• Sodium Hypochlorite Feed System
• Provisions for chemical deliveries
• Chemical pipe flushing
• Containment drains
Chemical Feed Systems
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• Slurry discharge to Indoor Pellet
Drainage Area
• Discharge based on operational
experience
• Discharge pellets for reuse in
agricultural applications
Pellet Discharge
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• Backwash Holding Tank
• Gravity setting
• Pumps recycle up to 10% of
process flow to head of WTP
• 31,200 gallon capacity
• 1.65 to 3.34 backwash cycles
Filter Backwash
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• Two independent clearwells and
wet well providing ~300,000 gal
• 12.5% concentration sodium
hypochlorite delivered by PD
peristaltic tube pumps
Disinfection
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AUTHORITY MANAGER, MTJMA
APRIL WINKLMANN
CONSTRUCTION
UPDATE
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• General – Thomas Construction, Inc.
• HVAC – East West Manufacturing
• Plumbing – Enders Plumbing, Inc.
• Electrical – Bronder Technical Solutions
• MTJMA – Owner/Inspector
• Black & Veatch – Construction Administration
Total Construction Contract Award $8.4M Black & Veatch
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Construction Team
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• Notice of Award – 2/18/16
• Construction NTP – 4/11/16
• Substantial Completion – 7/14/2017
• Final Completion – 8/14/2017
Construction Schedule
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Pellet Softening and
Filtration Process Areas
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Backwash Holding Tank
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Pellet Softening Reactors
Set
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Filter Units and Piping
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Backwash Pumps
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PEMB In Progress
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• PEMB Installation – April 2017
• New Well Pumps – May 2017
• New Plant Startup and
Commissioning – Aug/Sept 2017
• New Plant Online – Sept 2017
Upcoming Milestones
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Learn more at bv.com.
Contact Us
April Winklmann | Authority Manager
2310 Pleasant View Dr., Ford City, PA 16226
P: +1 724-763-2511
W: www.mtjma.com
Jared Hutchins | Engineering Manager
4555 Lake Forest Dr., Ste. 310, Cincinnati, OH 45242
P: +1 513-936-5137
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Learn more at bv.com.