| Typical abbreviated names |
SAFF/FAB/MBBR |
RMBR Patented |
| Space requirement, sqm |
150-200 sqm/MLD |
68 sqm/MLD |
|
|
(plant mounted on top of equalization tank) |
| Type of plant |
MS/RCC tanks with equipment |
Prefabricated, compact, package type |
| Power for process |
10-20 HP PER MLD |
1.5-3.0 HP PER MLD |
| Contamination of ambient air |
High potential as tanks are
open and turbulence on surface of aeration tank; foaming aggravates the problem
|
No contamination due to gentle
movement of Biodisks and containerized design; no foaming problems
|
| Problems of settle ability &
sludge bulking, Biomass hold up
|
Settle ability adversely affected
by floc shear; biomass hold-up is poor; hence susceptible to shock loads
|
Excellent settle ability as
average particle size is manifolding larger. Bulking is never a problem as attached growth systems produce highly dense rapidly settling solids; excellent biomass hold-up hence better capability to handIe shock loads
|
| Response to power trips |
100% of the Biomass settles to the bottom when aeration stops and biomass becomes septic |
60% of the biofilm is in contact with the air; hence does not become septic; biofilm holds on to water and does not dry up. |
| Sound levels |
High due to blower |
Very low as aeration is done by
gentle rotation of a disk pack on very smooth bearings; no blower is used
|
| Maintenance inputs |
High- due to high rotational
speed of aerators/ blowers
|
Low due to low rotational
speeds of biodisks
|
| Possibility of relocation |
Not as easy as the RMBR |
Could easily be removed and
installed at other location in future
|
| Availability of spares and serviceability |
Diffusers need to be stocked as designs keep changing |
Spares are bearings and oil seal
which are standard items available even in remote places
|
| Visual Appearance |
Odour problems due to open surfaces |
Excellent product design; no odour; can be mounted in residential areas without any problem |
| Civil Work cost of treatment tanks |
|
20% -30% lesser than other technology |
