Decentralized Wastewater Systems: Where On -site ... · 24.06.2020 · •4,999 Gallon Per Day...
Transcript of Decentralized Wastewater Systems: Where On -site ... · 24.06.2020 · •4,999 Gallon Per Day...
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Decentralized Wastewater Systems: Where On-site Commercial and Municipal Wastewater Technologies Meet
Edward F. Gelsone, M.S., P.E.Southern Region Sales Engineer
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Agenda
• Background• Engineered Products• Case Studies• Q & A
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Centralized Systems are the norm for wastewater• Urban Areas &
Cities• 16,000 systems
(75%)
USEPA 2004 Report “Decentralized Water Reclamation Engineering” by B. Siegrist, 2017
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Onsite (Individual Septic) Systems• Rural Areas• 25M systems (25%)• 30% of New Single-
Family Housing
USEPA 2004 Report“Decentralized Water Reclamation Engineering” by B. Siegrist, 2017
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Decentralized Systems - Collect, Treat & Disperse
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2-10k GPD small
• Rest Stops• Strip Malls• Restaurants• Schools• Daycares• Parks• Churches
10-50k GPD medium
• Lodges• Campgrounds• Truck Stops
50-100k+ GPD large
• Casinos• Arenas• Small
towns & villages
Typical Decentralized Wastewater Applications
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Engineered Products and Case Studies
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Soil DispersalCollection Advanced Treatment
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Quote Request FormGood Intel Gathering…
…to determine options
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Collection Systems
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STEP/STEG Systems• Septic• Tank• Effluent• Pump / Gravity
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Benefits of STEP/STEG
Energy Efficient
Smaller Sewer Lines
Cost Effective
Reduced Sludge
Management
Isolated malfunctions
Possible Fed. Funding
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IM-540 Tank IM-1060 Tank IM-1530 Tank500gal 1000gal 1500gal
IM-Series Thermoplastic Tanks
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Delta Accessories
• ECOFILTER - Pump Vault• 49” and 57” models• Up to 50 GPM capability• 1” up to 2” discharge
assemblies• Custom Panels available
• Demand, time dosed, PLC, Explosion Proof
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Pump Tankdetails
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Location: Ontario, CanadaInstall: Summer 2013Design Flow: 300,000 gpd
Specs
Treatment Lagoons to above ground dispersal (Spray in Summer) or underground absorption bed (winter).
Surgoinsville STEP System
Location: Hawkins County, TN
Installation: 2016
Design Flow: 1.6 mgd
Specs:
$4M project serves 250 residences (up to 700), 2 schools, and 9 Businesses.
STEP system with discharge off-site to the Church Hill WWTP.
Population: 1,800
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Advanced Treatment Systems
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Soil DispersalCollection Advanced Treatment
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Load vs. Flow
5,000 gpd 60 mg/LTKN 8.34 lbs/g 1,000,000 2.5 lbs/d
5,000 gpd 200 mg/LBOD 8.34 lbs/g 1,000,000 8.34 lbs/d
Domestic Strength ApplicationFlow = 5,000 gpd
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Load vs. Flow
5,000 gpd 180 mg/LTKN 8.34 lbs/g 1,000,000 7.5 lbs/d
5,000 gpd 1,200 mg/LBOD 8.34 lbs/g 1,000,000 50.0 lbs/d
Commercial Strength ApplicationFlow = 5,000 gpd
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Wastewater Treatment OptionsECOPOD Package Treatment Plant
Sizing Method NSF Certified “Pilot” 10 States Standard
Microorganisms Fixed/Attached Growth Suspended Growth
Wastewater Flow• Intermittent X• Continuous X X
Treated Water Dispersal
• Subsurface Dispersal X
• Surface Discharge X
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Treatment Plants Up to 250,000 GPD
Package Treatment Plants10 States Standards design
ECOPODProprietary design
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FBBR (Fixed Bed Bio-Reactor)Fixed/Attached Growth
ECOPOD
Bio-Reactor Tank• Media• Clarifier
Primary Tank(required)
= 1.4 x GPD
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ECOPOD Media
Vertical Fixed Film Removal Capacities
• BOD• TSS• Ammonia
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ECOPOD System
TreatmentProcess
A.Wastewater enters the primary tankB.Aerated media area where nitrification takes placeC.Anoxic area where denitrification takes place
(completely mixed)D.Effluent is discharged to dispersal system
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ECOPOD
Features& Benefits
Fixed Bed Biological Reactor (FBBR)
Submerged Media
• Gravity fed equal influent distribution
• Reduces odors & filter flies
• Nothing to clog, no adjustments needed
Patented Air Ports
• Non-pressurized, no back pressure on air compressor
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ECOPOD
Features& Benefits
Fixed Bed Biological Reactor (FBBR) cont…
Vertical flow path increases treatment levels
• Less Sludge Buildup
Minimal Routine Maintenance (passive system)
• Self-Cleaning Media
• Simple Controls
Custom Configurations• Existing or Local Tank Sizes• Nitrogen Reduction
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Standard ECOPOD Systems
• Small decentralized treatment plants – 2,000 to 10,000 gpd
• Offered in standard, catalog configurations requiring no special design or engineering
• Designed for commercial and multiple residential wastewater treatment applications
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Flexible Tank Options
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At-Grade Tanks
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Partially Buried Tanks
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Above-Grade Indoors
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Custom Controls
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Nearly every project is custom designed
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• 5,000 Gallon Per Day System• 1500 mg/L BOD• 200 mg/L TSS• Treatment to 140 BOD or less• 1,350 Q4 + High Chambers installed
in trenches• 1 – 15,000 Gallon Containment
Solutions 2 Compartment Trash / Flow EQ Tank with Polylok Filters
• 4 – 6,000 Gallon Concrete Tank with (4) E2000D Ecopods
• 1 – 6,000 Gallon Pump Tank to pump effluent to gravity feed the chambers
Case Study: Pilot Gas Station ECOPOD Concrete Kit – Pyote, Texas
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• 4,999 Gallon Per Day System• 350 mg/L BOD• 1 – E600D Ecopod• Treatment to 10/10 for spray irrigation• 1 Compartment - 5,285 Trash Tank• 1 Compartment – 2,643 Flow EQ Tank• 1 Compartment – 8,457 Treatment
Tank• 1 Compartment – 114 Chlorination
Tank• 1 Compartment – 1,585 Pump Tank• Client ordered three (3) identical units• Client planning to order twelve (12)
more identical units in 2020
Case Study: O&G Man Camp ECOPOD Package Plant – Midland, TX
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Package Treatment Plants
Activated SludgeSuspended Growth
Up to 250,000 gpdBlowers
Aeration Basin
Clarifier
Tertiary Treatment
Flow EQBasin
SludgeHoldingBasin
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Waste Activated Sludge (WAS)
Returned Activated Sludge (RAS)
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Package Treatment
Plant
Features& Benefits
Custom Configurations
Treatment: Basic Model up to a BNR System
Coatings
Controls
Materials
Layouts
Options: Tertiary Filter, UV, Chlorine, Flow
equalization, Sludge Storage, etc.
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Package Treatment
Plant
Features& Benefits
Custom Configurations
Can be coupled with STEP or STEG Systems to
minimize BOD/TSS loadings to minimize plant size
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• 30,000 GPD Average Daily Flow• Two Parallel 15K GPD Aeration
Basins in Single Tank Construction• 10’ Diameter Mechanical
Secondary Clarifier with Over-torque Controls
• Effluent Pump Tank with Duplex Irrigation Pumps and Controls for Spray Dispersal
• 304 Stainless Steel Air Drops• Galvanized Steel Stairs, Walkways,
Handrails• Interior surface prepped to near
white (SP10); Coating is Tnemec Series 69 epoxy
Case Study: Yogi Bear’s Jellystone Park AE Package WWTP – Waller, TX
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Soil Dispersal Systems
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Soil DispersalCollection Advanced Treatment
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Why use Subsurface Soil Dispersal vs Surface Discharge
Environmentally Sensitive Areas
Lower Capital and Operational Costs
Additional treatment in soils avoid discharge permits
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Subsurface Dispersal TechnologiesChambers /
Synthetic Aggregate Systems
Low Pressure Pipe Systems
Drip Dispersal Systems
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Chamber Technologies
Bed Systems Trench Systems
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Standard Chamber
details
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Location: Ontario, CanadaInstall: Summer 2013Design Flow: 300,000 gpd
Specs
Treatment Lagoons to above ground dispersal (Spray in Summer) or underground absorption bed (winter).
Location: Foxborough, MAInstall: 2002Design Flow: 1.2 mgd
Specs
MBR Treatment Facility to drainfield under parking lot.
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standard details
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Low Pressure Pipe
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Conventional Gravity
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LPP Dosing
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Drip Irrigation
• ½” Polyethylene Tubing • Emitters and tubing spaced 12” or 24” apart• Buried 6” to 8” below the soil surface
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Drip Dispersal
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Soil Dispersal Options - Summary
Why this Technology?
Chambers/ EZflow
• Limit embedment for improved infiltration• Possible drainfield size reduction• Higher Storage for Peak Flow Capacity• No Fines, Quick and Easy to Install
Drip• Shallow Soil Restrictions• High Ground Water or Bedrock• Tight Soils
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Combined Treatment &
Dispersal (CTD) Systems
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Advanced Enviro-Septic® (AES)Combined Treatment & Dispersal System
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• Passive System
• Advanced Treatment & Dispersal
• No Mechanical Devices, Electricity or Chemicals
• Durable, Non-Biodegradable Components
System Sand
Air Void
Effluent
Advanced Enviro-Septic® (AES)for Combined Treatment & Dispersal
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86
• Largest AES system to date• 100,000 gallons per day• Multi-Level™• All treated water captured• Over 1,500 workers• Kitchens and Laundry Facilities
California FEMA Base Camp
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87© 2019 Presby Environmental, Inc., All Rights Reserved
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88© 2019 Presby Environmental, Inc., All Rights Reserved
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Summary• Engineered Products for Decentralized
Collection, Treatment, and Dispersal• Engineering Design Services to assist in Project
Development• Educational Opportunities through custom-
tailored seminars and webinars for all stakeholders Edward F. Gelsone, M.S., P.E.
Southern Region Sales Engineer
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A certificate of course completion will be issued to attendees by email.