
Septic Tanks.
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Professional Development
•
Professional Development
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Medium
Ice one
Used 6+ times
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8 Slides • 15 Questions
1
Septic Tanks.
2
Traditional septic tanks
Traditional septic tanks
The septic tank has been used in one form or another for at least 3000 years.
In New Zealand the traditional septic tank has received the solid and liquid waste from
toilets, baths, showers and sinks (combined black water and grey water). The tank
processes that and eventually discharges effluent (liquid) to either a soak-hole, or a piped
system buried in a gravel trench, from where it soaks into the ground water.
The following diagram gives an overall view of the septic tank and its piped trench system
disposal field.
3
Multiple Choice
Who is allowed to install a septic tank?
a drainlayer
a plumber
a licenced builder
a home owner
approved licenced drainage contractor
4
Multiple Select
What happens to the effluent from the septic tank?
It drains into the ground via a soak hole.
It is pumped to the closest sewer drain.
It evaporates inside the tank leaving the solids behind.
it is pumped or gravity feed into the effluent field.
5
Now watch the following video on Secondary Treatment Systems
6
7
Self Check #1
8
Open Ended
Give a brief description of how it works
9
Multiple Select
Select the best installation requirements you need to think about before installing this system
Tank location relative to services
Dripper line placement
Site hazards
All of these
Positions of fixtures in the house
10
Multiple Choice
What base layer thickness is required for the tank to sit on
100mm of sand
100mm of shingle
50mm of Gap 40
50mm of shingle
11
Multiple Choice
What is the approximate weight of the Airtech 9000
600kg
600 litres
650
1600 kg
12
Multiple Select
How far should the shingle be placed
Up to the level shown
Up to the moulding mark on the tank
Upto the full height of the tank
Upto 600mm below the seismic strap
13
Self Check #2
14
Multiple Select
Why is the digger operator doing this
Because it is the best way to start backfilling
To make sure it sites the tank evenly
To make sure there are no voids when backfilling
All of the above
15
Multiple Select
What components should be checked once the tank is backfilled prior to hook up
The bio filter for any silt or shingle
The media filter is located properly
The pump has not moved
The wiring is complete
All of the above
16
Multiple Choice
What does this product do
Disinfects the tank prior to use
Kickstart agent for the system
Encourages mould to grow
All of the above
17
Read through the brochure to help you answer the self check questions
18
Open Ended
What household items can you NOT flush down the system
19
Multiple Choice
How often should the filter be cleaned
Every six months
Every one month
Annually
20
Open Ended
What role does the blower perform
21
Multiple Choice
The airtech 9000 uses a gravity system for the effluent/ dripper line dispersal
TRUE
FALSE
22
Multiple Select
What two alarm warnings does the Airtech Smartalarm give?
High temperature
High water
Blower fault
Aerobic fault
Aeration fault
23
Well Done !
Thank you for completing this lesson
Septic Tanks.
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