Decentralized Wastewater Systems: Where On-site Commercial and Municipal Wastewater Technologies Meet

Edward F. Gelsone, M.S., P.E.Southern Region Sales Engineer

Agenda

• Background• Engineered Products• Case Studies• Q & A

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

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

Decentralized Systems - Collect, Treat & Disperse

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

Engineered Products and Case Studies

Soil DispersalCollection Advanced Treatment

Quote Request FormGood Intel Gathering…

…to determine options

Collection Systems

STEP/STEG Systems• Septic• Tank• Effluent• Pump / Gravity

Benefits of STEP/STEG

Energy Efficient

Smaller Sewer Lines

Cost Effective

Reduced Sludge

Management

Isolated malfunctions

Possible Fed. Funding

IM-540 Tank IM-1060 Tank IM-1530 Tank500gal 1000gal 1500gal

IM-Series Thermoplastic Tanks

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

Pump Tankdetails

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

Advanced Treatment Systems

Soil DispersalCollection Advanced Treatment

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

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

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

Treatment Plants Up to 250,000 GPD

Package Treatment Plants10 States Standards design

ECOPODProprietary design

FBBR (Fixed Bed Bio-Reactor)Fixed/Attached Growth

ECOPOD

Bio-Reactor Tank• Media• Clarifier

Primary Tank(required)

= 1.4 x GPD

ECOPOD Media

Vertical Fixed Film Removal Capacities

• BOD• TSS• Ammonia

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

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

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

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

Flexible Tank Options

At-Grade Tanks

Partially Buried Tanks

Above-Grade Indoors

Custom Controls

Nearly every project is custom designed

• 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

• 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

Package Treatment Plants

Activated SludgeSuspended Growth

Up to 250,000 gpdBlowers

Aeration Basin

Clarifier

Tertiary Treatment

Flow EQBasin

SludgeHoldingBasin

Waste Activated Sludge (WAS)

Returned Activated Sludge (RAS)

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.

Package Treatment

Plant

Features& Benefits

Custom Configurations

Can be coupled with STEP or STEG Systems to

minimize BOD/TSS loadings to minimize plant size

• 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

Soil Dispersal Systems

Soil DispersalCollection Advanced Treatment

Why use Subsurface Soil Dispersal vs Surface Discharge

Environmentally Sensitive Areas

Lower Capital and Operational Costs

Additional treatment in soils avoid discharge permits

Subsurface Dispersal TechnologiesChambers /

Synthetic Aggregate Systems

Low Pressure Pipe Systems

Drip Dispersal Systems

Chamber Technologies

Bed Systems Trench Systems

Standard Chamber

details

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.

standard details

Low Pressure Pipe

Conventional Gravity

LPP Dosing

Drip Irrigation

• ½” Polyethylene Tubing • Emitters and tubing spaced 12” or 24” apart• Buried 6” to 8” below the soil surface

Drip Dispersal

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

Combined Treatment &

Dispersal (CTD) Systems

Advanced Enviro-Septic® (AES)Combined Treatment & Dispersal System

• 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

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

87© 2019 Presby Environmental, Inc., All Rights Reserved

88© 2019 Presby Environmental, Inc., All Rights Reserved

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

Questions?

For further questions please contact Infiltrator Water Technologies at

info@infiltratorwater.com

A certificate of course completion will be issued to attendees by email.