basic treatment train diagrams keep in mind…variations are always possible

Basic Treatment Train Diagrams

Keep in mind…variations are ALWAYS possible

Basic Gravity System Components

Source

Septictank with

effluent screen

Drainfield

Soil

DistributionBox

Shallow placement drainfield

Limiting layer

Suitable Fill Drainlines and Gravel

Aerobic Soil

Areal Fill (“Mound”) drainfield

Limiting Layer

Suitable Fill Trenches

Aerobic Soil

Pressure-dosed gravity

Source

Septic Tank with effluent

screen

Drainfield

Aerobic Soil

DosingTank

Press

ure

man

ifold

Pressure regulating

valve

Basic LPP System Components

Source

Septic Tank withEffluent screen

LPP Laterals

Aerobic Soil

DosingTank

Turn

upMan

ifold

Pressure regulating

valve

Basic Drip Irrigation System Components (Direct ST Effluent)

Source

Septic Tank withEffluent screen

Drip Laterals and supply and return manifolds

Aerobic Soil

DosingTank

Headworks assembly

Basic Drip Irrigation System Components (Advanced-treated effluent)

Source

Septic Tank withEffluent screen

Drip Laterals and supply and return manifolds

Aerobic Soil

DosingTank

Headworks assembly

Advanced treatment and possible

recirculation

Basic sand filter system Basic sand filter system componentscomponents

To drainfieldO

bser

vatio

n

port

Sampli

ng

Septic Tank with effluent

screen

Dosing Tank

Underdrain

Type A Peat Filter System

Peat Bio-filter Module(s)

Fill Mound

Septic Tank

Dosing Tank

Gravel Pad

Type B Peat Filter System(gravity-fed drainfield)

Fill Mound

Septic Tank

Dosing Tank

Gravel Pad

Peat Bio-filter Module(s)

To Drainfield

Drop Box (Sampling

point)

Type B Peat Filter System(pressure-dosed drainfield)

Fill Mound

Septic Tank

Dosing Tank

Gravel Pad

Peat Bio-filter Module(s)

To

D

rain

fiel

d

Pump tank