Roto-Bioreactor 15
Roto-Bioreactor 15
Biological de-nitrification is used since
several years in the water treatment. The advantages compared with physical
technologies are easy handling of the process, high efficiency and a good
price.
With other de-nitrifying systems you can get
problems with strong growth of bacteria. So the reactor will block or toxic
substances like nitrite or hydrogen sulphide are produced.
The research center Jülich, Germany, has developed
a very safe system. The complete content of the reactor is mixed by slow
rotation of the reactor. Overload biomass will leave the reactor, so only the
new produced and strong bacteria will grow on the gravels. Blocking cannot occur.
AquaCare constructs in licences Roto Bio Reactors up to 150
liters in a full plastic version. So you can use all kinds of water beginning
from drinking water, sea water or process water. Units bigger than 150 liters
are built of a special steel 1.4462, which is absolutely resistant against sea
water and ozone.
A complete de-nitrifying system consists of
following components: Roto Bio Reactor, sediment tank for collection most of
the out flowing bacteria, flotation unit (AquaCareFlotor) for destroying the
rest of bacteria with ozone, pumps and controlling techniques.
| Roto-Bioreactor | RBR 15 | RBR 60 | RBR 150 |
| content | ca. 15 Liter | ca. 60 Liter | ca. 150 Liter |
| materials | PVC, PMMA (Plexiglas), NBR rubber | ||
| water inlet | PE d6 mm | PE d10 mm | d20 mm |
| water outlet | PVC d20 mm | PVC d25 mm | PVC d25 mm |
| water flow | 3 - 30 l/h | 12 - 120 l/h | 30 - 300 l/h |
| carbon source for bacteria | alcohole plus trace elements | ||
| nitrat elimination (T=25°C; S=0‰) | 40 g N/d | 140 g N/d | 400 g N/d |
| concentration of nitrate inlet | < 5000 mg N/l | ||
| concentration of nitrate outlet | < 5 mg N/l |
||
| rotation frequency of reactor | typically: 5 / h | ||
| nitrogen off-gas | automatically, continuously | ||
| surplus biomass | automatically, continuously | ||
| salinity of water | 0 to 40‰ | ||
| pH of water | pH 6 to pH 8 | ||
| temperature of water | 0°C to 30°C | ||
| measuring technique | ORP (redox) control: -300 to 0 mV | ||
| footprint size | 0.83 x 0.38 m | 1.2 x 0.5 m | 1.79 x 0.6 m |
| height of RBR | 0.5 m | 0.6 m | 0.7 m |
| diameter of reactor | 200 mm | 300 mm | 400 mm |
| minimum height of ground | 0.7 m | 0.8 m | 0.9 m |
| diameter | 420 mm | 570 mm |
600 mm |
| height | 0,8 m | 1,0 m | 1,1 m |
| content | 41 l | 113 l | 200 l |
| footprint size | 0,5 x 0,5 m | 0,6 x 0,6 m | 1,2 x 1,2 m |
| outlet | PE d10 mm | PE d10 mm | PE d10 mm |
| sediment outlet | PVC d20 mm | PVC d25 mm | PVC d32 mm |
| measuring technique | level control for inlet and outlet | ||
| skimmer | ACF 3,000 C | ACF 5,000 C | ACF 16,000 C |
| ozone input | 0.3 - 0.5 g/h | 0.5 - 1 g/h | 1 - 2 g/h |
| ORP in skimmer | >700 mV | ||
| footprint size | 300 x 370 mm | 400 x 600 mm | 500 x 750 mm |
| height of skimmer | 1.8 m | 2.0 m | 2.0 m |
| inlet | PE d10 mm | PVC d20 mm | PVC d25 mm |
| outlet | PVC d40 mm | PVC d40 mm | PVC d50 mm |
| minimum salinity | 15‰ | ||
| measuring technique | ORP (redox) control: 500 to 800 mV | ||
| gas flow (you need an ozone destroying system) | 700 l/h | 1,200 l/h |
3,500 l/h |
| volume of activated carbon for ozone destructer | 1 l | 5 l | 10 l |
