System Comparison

Treatment Type
Systems
Treatment Level
Treatment Capacity
Odour
Treatment Power Usage
Heaviest Module
Garbage Grinder
Plumbing
Disinfection Possibility
Vermifiltration
NF600TH
Advanced Primary
640L
None
Zero
120kg
Yes
Single/Double Pipe
None
Vermifiltration
NF8000
Advanced Primary
1600L
None
Zero
800kg
Yes
Double Pipe
None
Vermifiltration
NF11000
Secondary
1600L
None
Zero
800kg
Yes
Double Pipe
None
Vermifiltration
NF12000
Advanced Secondary
1600L
None
Zero/Low
800kg
Yes
Double Pipe
Yes
AWWTS
EconoTreat VBB-C-2000
Advanced Secondary
2000L
Septic Tank
1.3kWh
3000kg
No
Single Pipe
Yes
AWWTS
EconoTreat VBB-P-2000
Advanced Secondary
2000L
Septic Tank
1.3kWh
500kg
No
Single Pipe
Yes
AWWTS
EconoTreat VBB-C-3000
Advanced Secondary
3000L
Septic Tank
1.3kWh
4000kg
No
Single Pipe
Yes
Passive Media
Biorock 2000
Secondary
1600L
Septic Tank
Zero
241kg
No
Single Pipe
Yes
Passive Media
Biorock 3000
Secondary
2200L
Septic Tank
Zero
300kg
No
Single Pipe
Yes
Passive Media
Biorock 5000
Secondary
3000L
Septic Tank
Zero
500kg
No
Single Pipe
Yes
Septic Tank
Concrete Septic Tank
Primary
1/3 Tank Volume
Septic Odour
Zero
3000kg
No
Single Pipe
No
Septic Tank
Plastic Septic Tank
Primary
1/3 Tank Volume
Septic Odour
Zero
500kg
No
Single Pipe
No

Makes use of bacteria such as earthworms to help filter organic material from wastewater. This simple, energy-efficient approach requires no power or outside input, and is a low-cost and high-efficiency solution.

However, nitrate reduction is not covered by vermifiltration systems. This is important to consider if nitrogen build up in a particular environment is a key concern. Otherwise it’s a solid non-odour choice.

Generally comprised of a primary chamber, aeration chamber and clarification chamber, our AWWTS is an ideal option to greatly reduce biochemical oxygen demand and total suspended solids.

Though septic odour will be present with this system, nitrate reduction can be achieved for all three options. All options will require a power output of at least 1.3kWh.

This system is suitable for domestic applications. Since no power output is required it can help contribute to lower utility costs for your home.

With a significant reduction in biochemical oxygen demand, total suspended solids (almost on par with AWWTS), as well as low odour emission, it’s an ideal option for building a more sustainable home.

Waterflow NZ offers two options under this system: concrete or plastic septic tanks.

Septic tanks are an affordable option, however, bear in mind that organic and inorganic molecules take a while to break down in this system.

Carefully consider your options and prioritise the factors that you value more.

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