What are then the different system sizes for different cleaning levels?
BioKube treats waste water using natural bacteria.
This means that the more stringent the cleaning requirements are, the more bacteria are needed. More bacteria means more filter area in the BioBlocks and consequently a bigger and more exspensive system. In other words; higher cleaning requirements means a bigger and more expensive system.
The typical cleaning levels.
The water from a BioKube is cleaned to a degree required by the local authorities. BioKube systems are as needed modified so the local requirements can always be fulfilled.
The typical cleaning requirements BioKube delivers to are:
BOD < 25 and no HH4 requirement (EU standard requirement)
BOD < 20 mg/l and NH4 < 20 mg/l
BOD < 10 mg/l and NH4 < 5 mg/l (EU Elite requirements). T-tot in this configuration reduced by 60 - 70 % due to the continous recirculation back to the settling tank.
BOD < 10 mg/l and N-tot < 20 mg/l (in some countries N-tot < 10 mg/l)
All above systems can be equipped with P-reduction to the required level.
All systems can also be equiped with after cleaning shuch as UV or Chlorine as relevant for reuse of the treated water.
How many BioKube elements to achieve the required cleaning results?
Below are 3D drawings below is a Jupiter 75 m3 / day system. The illustrations show the number of tanks used for different cleaning requirements.
The drawings also show that in front of all BioKube systems is a pre cleaning unit to remove sludge in the incoming waste water.
In small systems (up to 200 - 300 m3 / day) the pre-cleaning used will normally be a pre-settling tank to be emptied at specified intervals. In larger systems the pre-cleaning wil be a mechanical devise such as screens and / or belt filters and / or flotation devices as best in the specific system to keep the total cost as low as possible.
Reduction of BOD from chamber to chamber.
In standard household sewage water with incoming BOD of 300 - 400 mg/l you can expect the following reduction of BOD from chamber to chamber in a BioKube system:
Reduction from settling tank to chamber 1 in the BioKube.
In a well designed settling tank, you can expect about 25 % reduction of BOD meaning that the system can be designed for water entering the cleaning units to have BOD 300 mg/l.
Reduction from chamber 1 to chamber 2.
In chamber 1 you can expect a reduction of BOD from incoming 300 mg/l to 25 mg/l outgoing.
This means that if the cleaning requirements are BOD below 25 mg/l the system only needs 1 chamber.
BioKube Jupiter one tank system. Will clean to BOD < 25 mg/l. 
Reduction from chamber 1 to chamber 2.
In chamber 2 you can expect a reduction of BOD from incoming 25 mg/l to 10 mg/l outgoing.
This means that if the cleaning requirements are BOD below 10 mg/l the system needs 2 chambers.
BioKube Jupiter 2 step system. Will clean to BOD < 10 mg/l.
One air blower and one controle box for both Jupiter systems.
Reduction from chamber 2 to chamber 3.
In chamber 3 you will see nitrification (reduction of NH4). You can expect a reduction of to NH4 to below 5 mg/l.
This means that if the cleaning requirements are BOD below 10 mg/l and there is requirement for NH4 reduction, then the system needs 3 chambers.
BioKube Jupiter 3 step system. Will clean to BOD < 10 mg/l and NH4 < 5 mg/l.
One air blower and one control box for all three Jupiter systems.
Reduction of N-Total.
As part of the basic BioKube technology, cleaned wastewater is recirculated back to the setteling tank. This will in itself reduce N-Tot by 60 - 70 % in a three BioKube chamber system.
If there is a requirement for greater reduction of N, then the recirculation is increased and a chamber for this reduction aded as part of the settling tank.
If these are the requirements then N-Tot can be reduced to the required level, typically N-Tot < 20 mg/l.
BioKube Jupiter 3 step system with ad on for N-Total reduction. Treated wastewater irs recirculated several times to an extra chamber in the Pre-setteling tank.
One airblower and one controle box for the whole system.
3D illustrations of BioKube Jupiter systems.
The illustrations above show the difference between the 4 typical cleaning demands BioKube delivers to.
In all 4 systems you see the 3 chamber pre-settlment tank in front of the Jupiter unit to retain sludge.
The Jupiter system in each tank is a selfcontained system containing the active aerated cleaning section and the settlement zone for retention of bacteriological sludge. Each system needs only one airblower and one ellectrical control box.
Illustrated is also the return sludge from the cleaning units to the pre-settlement tank. This returns baceteriological sludge to the pre-settlement chamber and thereby keeps the system free from sludge.
All information on this website is copyright BioKube.
If you wish to redistribute the information, please contact BioKube. Permission to redistribute will normally be given.
Peter Taarnhoj, pt@biokube.dk.