Denitrification Units

SeptiTech Wastewater Treatment Systems

Residential & Commercial

Our History

• Systems in operation since 1996

Longevity

• Over 2500 systems operating nationwide

20 State Approvals

• ETV, 2002• NSF 40 & 245, 2008Certification

• Rigorous ongoing research & development - Simple, smart & more cost effective treatment

Ongoing Development

SeptiTech Basics

Biological Recirculating

Trickling Filter

No Chemicals Added

Control Panel Monitors System

Added Between 2-

Compartment Tank &

Disposal Field

Aerobic (Pulls Air In)

Self Cleaning

Residential & Commercial Processors

Installed Below Grade

SeptiTech Trickling Filter

Simple and Reliable Process

Treats High Organic Loads

Efficient in Removing Ammonia

Handles and Recovers from Shock Loads

Relatively Low Power Requirements

Less Sludge than Suspended Growth Systems

Moderate Operator Skill Level

Low Operating Cost

Equalization and Clarification All in One Tank

Operating Flexibility and Control

All Below Grade Components

No Onsite Concrete Work Required

Very Small Footprint — 90,000GD ~ 1/3 Acre

No Fulltime Operator Needed

No Operations Building Required

Integrates with Other Technologies

SeptiTech Technology

SeptiTech Advantages

Third Party VerificationsETV, NSF 40 & 245

Best treatment numbers including Denitrifiction

98%+ Removal of BOD/TSSUp to 85% Removal of Nitrogen

Recirculation Pump is dual purpose – sprays wastewater over treatment media & draws outside air in through use of Venturis

Return Pump sends dead bacteria flock back to head of primary septic tank & recycles Nitrified wastewater to anoxic zone

Discharge Pump discharges treated wastewater to disposal field(s) up to 24 times a day

Control Panel monitors all activity in system & sends alarm conditions for any problems

SeptiTech System Operation

Control Panel

Recirculation

Return

Discharge

SeptiTech Installation

Control Panel

Air Intake

2 Compartment Primary Tank

SeptiTech Treatment Processor

Disposal Field

Primary Septic Tank

SeptiTech Processor4” Inlet

1-1/2” Return

4” Inlet 2” Discharge

2/3 1/3

Effluent Filter

2” A

ir

1” E

lec

Residential System Overview

SeptiTech Processor Polystyrene Bead

Treatment Media Self Cleaning

Processor

Primary Septic Tank 2 Compartment Effluent Filter

External Piping Inlet / Discharge Line Return Line Air Intake Electrical Conduit

Residential Treatment Media

Residential Processor SchematicPlastic Tank

"

LB132

Residential Processor Schematic Concrete Tank

"

Residential Control Panel

Removable OIT

NEMA 4x Enclosure

Audible / Visual Alarm

Hand / Off / Auto Switches

Built to UL508A Requirements

Residential ProcessorsProcessor Model Bedrooms Tank Capacity

M400 4 1,060 Gallons

M550 6 1,250 Gallons

M750 8 1,500 Gallons

SeptiTech Residential System

SeptiTech Commercial Layout

2-COMPARTMENT PRIMARY SEPTIC TANK

SEPTITECH PROCESSOR

M3000

DISPOSAL FIELDAIR INTAKE

Commercial System Overview

Primary Septic Tank

SeptiTech Processor4” Inlet

2” Return

4” Inlet2” Discharge

2/3 1/3

Effluent Filter

2” A

ir

2” E

lec

2” A

ir

2” Discharge

Commercial Processor Schematic

Access Access Access

Commercial ProcessorsProcessor Model Flow (GPD) Tank Capacity

M1200 1,200 2,000 Gallons

M1500 1,500 4,000 Gallons

M2500 2,500 6,000 Gallons

M3000 5,000 8,000 Gallons

Engineered 100,000 + Modular

SeptiTech Commercial System

Commercial System Control Panel

Multiple Train Modular Layout

10,000 GAEQUALIZATION

TANKM3000 M3000

10,000 GAEQUALIZATION

TANKM3000 M3000

ADJUSTABLE FLOW SPLITTER

From Collection System

20,000 GPD TRAIN

Equal Flow Splitting is Critical

Advantages of the SeptiTech System

Easy Operation

PLC Control Panel

Minimal Components

Easy Onsite Customization

Simple Maintenance

Self Cleaning Media

No Extra Pumping

Mostly Visual Inspection

SeptiTech Prevents Future Failure

Completely Subsurface

H20 Capable

No Noisy Blower

Aesthetically Pleasing

Why Nitrogen Removal?

Degradation of Groundwater

Quality

Elevated Nitrogen

Concentrations

Exceedance of Drinking Water

Standards

Health & Environmental

Effects

Nitrogen Reducing Aerobic Treatment Units

Are Effective at Removing 50-75% of Nitrogen from

Wastewater

Systems Must Fully Nitrify the Wastewater before

Denitrification Can Occur

Must Have Anaerobic & Aerobic Conditions

Other Factors that Contribute to Nitrogen Removal

Plenty of Air

Steady pH

Temperature

Toxicity

Long Retention Times

Nitrosomonas:2-Step NH4

+ NO2-

Process Nitrobacter:NO2

- NO3 -

Overall Reaction

NH4+ + 2O2 NO3

- + 2H+ + H2O

Requires Oxygen (4.6 lb/lbN) Uses up Alkalinity (7.1 lb/lbN)

Nitrifers

Removing Nitrogen Biologically

Nitrogen Cycle Simplified

Nitrification — The Conversion of Influent Ammonia to Nitrite & Nitrate

Denitrification — The Conversion of Nitrite to Nitrogen Gas:

Stripping O2 from NO3 to Release N2 (Gas)

“You Must Nitrify Before You Can Denitrify”

PROCESSOR

AEROBIC

OUTSIDE AIR DRAWN IN

SEPTIC TANK

ANOXIC

NITRATE RICH RECYCLE

INFLUENT

AMMONIAINFLUENT

AMMONIA

NITROGEN GAS

Operations & MaintenanceOnsite Visual Inspection of All System Components

Tank, pumps, float switch, control panel, auto-dialer and

audio/visual alarm

Visual inspection of electrical splices and contacts,

check/record amperage and voltage readings

Visual inspection of filter media or filtration device(s)

Exercise all mechanical valves

Sensory examination of treated effluent for clarity, odor, oily

sheen, foaming or any other unusual characteristics

Record flow data (volumetric, cycle counter, etc.)

Maintain bound inspection log with entries for all service activities,

observations, and field test readings with entries recorded in ink.

Operations & Maintenance Cont.

SeptiTech Product Advantages

Subsurface InstallationH20 loading for parking lots

*Competitor’s Installation

SeptiTech Installation

SeptiTechH20 Loading

SeptiTech Product Advantages cont.

Easy to Fine Tune Process Self Adjusting & Cleaning Low Operating & Maintenance Cost

SeptiTech Product Advantages cont.

Modular design flexibility Systems scale from a 2 bedroom cottage up to

a 100,000GPD municipalsystem

SeptiTech Product Advantages cont.

Easy to fine tune processPLC controls & monitors system, fully

customizable

Collects & stores operating data

Remote communication capabilities

Small Town Municipal Sewers Vinalhaven Island, ME

80,000 GPD

SeptiTech Commercial Systems Old Marsh Golf Club, ME

40,000GPD

SeptiTech Commercial Systems cont.

Bracket’s Landing, MA 9,000 GPD

Commercial Chains Hannaford Markets, NY

5,000 GPD

SeptiTech Summary

Plug & Play Residential

Systems

Robust Modular

Commercial Systems

Simple Install, Operation &

Maintenance

Nitrogen Reducing Systems