High-performance air diffuser
LIMPIO
The world's most efficient aerator (aeration pipe), a dedicated water purification machine "LIMPIO"
To return water to nature, we must remove all unnecessary substances to restore it to its natural state.
What we need is air and natural microorganisms.
To make the water cleaner...
◎Move the wastewater and mobilize the entire system!
◎Pump large amounts of air (oxygen) into the wastewater!
◎Activation of microorganisms (bacteria)
*Bacteria: aerobic
◎Purify wastewater!
High-performance air diffuser LIMPIO
Aerator Features
Purification capacity comparison example
A complete energy-saving machine
Purification capacity comparison example
The aerator body, which has a stainless steel perforated angle attached, is fixed to the stainless steel stay fixed to the header pipe.
Actual machine in operation
Graph showing changes in electricity costs for blowers after installing aerators
Features of LIMPIO
1. Variable
-The body and outer tube of LIMPIO can be adjusted according to the water depth.
· The inner cylinder is usually six-tiered, but can be stacked seven or eight tiers.
2. The outer cylinder and main body are separate
-The body and outer tube of LIMPIO can be adjusted according to the water depth.
- Materials available are stainless steel 304, 316, or PVC.
-The length of the outer tube can also be freely changed.
3. Projection shape
It has a wedge shape.
・The wedge shape is adopted because we want to utilize the Karman vortex that occurs when a water flow collides with a wedge-shaped flat surface.
- The occurrence of Karman vortices causes the rotation of the water flow to become more complex, resulting in the creation of smaller bubbles.
4.Air outlet shape
- By introducing air from the side of the outer tube, 100% bottom wrapping is possible.
- 100% of the deposits at the bottom are not left behind.
5. Convection Shape
- Rising bubbles are drawn in from the bottom of the LIMPIO and turn into finer bubbles.
- Fine bubbles always remain at the bottom of the tank.
6.Air volume
- By making the outer cylinder diameter 110 mm and the air outlet diameter 20 mm, the air volume can be reduced.
- The air lift effect is 100%, resulting in high dissolution efficiency.
・Energy savings of over 30% can be expected.
Difference between OHR Aerator and LIMPIO
OHR
| LIMPIO
| |
|---|---|---|
Inner Cylinder Size | 136mm | 110.5mm |
Protrusion Shape | Mushroom-shaped | Wedge type |
Cross-sectional shape | Round | triangle |
Projection Shape | From the outer cylinder to the inside | From the inner cylinder to the outer |
Outer cylinder | 6-stage welding | 100A non-welded |
External cylinder change | No | Yes |
Inner Cylinder | none | Yes (variable) |
Water flow division shape | Divide into two | Quarter |
Water flow separation gradient | 165 degrees | 115 degrees |
Winding distance | 100 | 150 |
Air volume | 0.7m³ to 1.4m³ | 0.5㎥～0.75㎥ |
Discharge Gauge | 25A | 20A |
Discharge Air Speed | 23m to 47m/sec | 26m to 39m/sec |
Inflow angle | 270 degrees | 360 degrees |
Inflow ratio | 55% | 100% |
Flow velocity | 0.8m~1.6m/sec | 0.87m~1.3m/sec |
Dissolution efficiency (4M) | 7.5% | 12.2% |
Material | SUS+ABS | NYLON+GLASS |
Comparison table between disc and LIMPIO
Disc
| LIMPIO
| |
|---|---|---|
Oxygen dissolution efficiency | 5% | 12.2% |
Mixing power | Updrafts only | Up-down agitation |
Air supply volume | 0.1~0.4 m3/min | 0.5~0.75m3/min |
Power consumption (actual value) | 2 to 3 times the speed of Aqua Tornado | 1/2 to 1/3 of the diffuser |
Bottom Sediments | Residue present | Not left behind |
Clogging | happen | Doesn't happen |
maintenance | Replace every 2 to 3 years | Free |
Intermittent operation | I can't | Yes |
Material | I can't | Nylon66+Glass |
Formula for calculating the quantity of LIMPIO
Graph showing changes in electricity costs for blowers after installing aerators
① Inflow BOD value mg/ℓ ・・・・・a
②Outflow BOD value mg/ℓ ・・・・・b
③Daily wastewater volume m3/day ・・・・・c
④MLSS value mg/l ・・・・・d
⑤Aeration tank volume ㎥・・・・e
⑥Aerator dissolution efficiency % ・・・・・f
A (Oxygen requirement kg O2/day) =0.6X(ab)X c X 10-3+0.08X d X e X 10-3
B (required air volume m3/day) = A ÷1.198÷0.23÷(f X0.6 ) X 102
C (required air volume m3/min) = B ÷24÷60
D (number of aerators) = C ÷0.65
0.6 :constant
0.08 :constant
1.198: Oxygen density
0.23 : Oxygen ratio
0.6 : Loss coefficient
24 :time
60 : minutes
0.65 : Air volume per aerator
LIMPIO pipe diameter calculation formula
1. Header pipe (usually around 10m/s wind speed)
Diameter (mm) x 103 = √Air volume (㎥/min) ÷60÷0.785÷ wind speed (m/sec)
2. Branch pipe (generally 15m to 20m)
Diameter (mm) x 103 = √Air volume (㎥/min) ÷ Number of branch pipes ÷60÷0.785÷ wind speed (m/sec)
3. Final exit diameter (generally around 30m)
Final diameter (mm) x 103 = √Air volume ÷ Number of branch pipes ÷ Number of aerators ÷60÷0.785÷Wind speed
60 : seconds
0.785 : 3.14÷4 (to calculate the diameter of the aperture)
Air lift air volume calculation formula
① New aerator inner diameter: 110.5mm
②Air lift water flow speed: 0.8m/sec to 1.3m/sec (generally 1m/sec)
Air volume (㎥/min) = 60 x 0.785 x 1 x 110.5 x 110.5 x 10-6
= 0.5751 m3/min
Therefore, the ideal airflow for the Aqua Tornado is 0.5 to 0.75 m3/min.
Changes in oxygen dissolution efficiency due to changes in LIMPIO airflow
Depth: 4m
Air volume: Actual measured air volume is blower manufacturer's stated air volume x 0.9
Aerator used: LIMPIO
Type of use: Resin body
Graph showing changes in blower electricity costs after installing LIMPIO
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