Fine Bubble Tube Diffuser (LTF-550)
Key Features
| Fine Bubble Tube Diffuser (LTF-550) | : | Product Name Fine Bubble Tube Diffuser (LTF-550) Model LTF-550 Type Fine Bubble Tube Diffuser Brand / Manufacturer LONGTECH / Indian Carbon Diffuser Length Approx. 548 mm Outer Diameter Approx. 64 mm Weight ~750 g Membrane Material EPDM Rubber Body Material ABS or Reinforced Compound Plastic Connection Size PT ¾" or PT 1" Female Thread Air Flow Rate Range 50 – 250 L/min Operating Temperature 0°C – 80°C (approx.) Bubble Size Fine bubbles (1 – 3 mm) Oxygen Transfer Efficiency High Pressure Loss Low Backflow Prevention Yes (self-closing design) Installation Method Mounted on air manifold or header Maintenance Low maintenance; easy membrane replacement Applications Wastewater treatment, aquaculture aeration, industrial effluent treatment, SBR systems, sludge aeration tanks Design Features Wide-space design to avoid clogging; uniform bubble distribution; high efficiency at low pressure Country of Origin Taiwan / Imported by Indian Carbon Certifications ISO 9001 / CE Compliant (if applicable) |
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Fine Bubble Tube Diffuser (LTF-550)
Product Overview
Key Specifications & Construction
Details
Model & Size
- Model: LTF-550 (Fine Bubble
Tube Diffuser)
- Standard ventilation /
airflow volume: from approx 50 L/min up to about 250 L/min,
depending on version.
- Dimensions: For example, the
spec sheet shows “A” (length) ≈ 548 mm, “B” ≈ 578 mm, “C” (thickness/outer
dimension) ≈ 64 mm for one variant.
- Connection size: PT-1″ or ¾″
female threaded connection (depending on variant).
- Weight: Approx. 750 g for
the 64 mm diameter version.
- Materials: Membrane—EPDM
rubber (ethylene-propylene diene terpolymer) offering high tenacity and
durability; support body/pipe—ABS or reinforced compound plastic or
similar. Construction Features
- The EPDM membrane is injection-moulded and engineered for consistent thickness, high mechanical strength and resistance to fatigue, deformation and chemical attack. It
allows many cycles of inflation and deflation (air distribution) without
failure.
- The diffuser tube body
provides stability, light weight and ease of installation. The design
emphasises minimal obstruction, so the membrane sits close to the support
tube, avoiding creases or folds which could reduce performance.
Features & Performance Benefits
HighOxygen Transfer Efficiency (OTE)
Because of the fine-bubble generation (many small bubbles, slow rise velocity)
and large surface area of the membrane, the LTF-550 design provides excellent
oxygen transfer into the water. The manufacturer claims high OTE in the LTF
series.
Low
Pressure Loss & Energy Efficiency
The diffuser is engineered for low head (air) pressure drop, meaning the
blower/air supply does not need to work as hard compared to less efficient
diffusers. The “low pressure loss” feature is explicitly mentioned.
Durability & Anti-Clogging Performance
- The LTF series emphasises
“wide space between filters, no blockage” which implies the membrane and
outlet holes are spaced to reduce fouling risk.
- The EPDM membrane provides
chemical and biological resistance, making it suitable for municipal and
industrial wastewater conditions.
- Additional feature: The membrane
may help prevent back-flow of sludge when air supply is off (some tube
diffusers incorporate a check valve or self-closing design) – the spec
mentions “High plankton containment” as part of the feature set. Easy Installation & Maintenance
- Relatively light weight
(e.g., ~750g) makes handling and installation simpler compared with
heavier components.
- Threaded female connection
fits air header/manifold systems easily.
- Because of simple
construction and absence of moving parts, maintenance is easier; membranes
may simply be replaced when worn out.
- The tube form factor allows
retrofit into existing aeration tanks if needed, with minimal structural
changes.
Versatility & Coverage
- The larger size of LTF-550
allows greater capacity per unit compared to smaller diffusers (like the
LTF-275). This means fewer units may be needed for a given basin,
simplifying manifold layout and reducing installation complexity.
- Its tube geometry
distributes bubbles along a length, which helps mixing and oxygen
distribution in larger tanks or deeper basins.
- Useful for a wide range of
applications: municipal wastewater, industrial effluent, aquaculture
ponds, sludge aeration etc. Typical Applications & Operational Use
Applications include:
- Biological
wastewater treatment basins (activated sludge, aerobic digestion)
- Municipal wastewater
treatment plants
- Industrial wastewater
treatment (where aeration is needed)
- Aquaculture ponds or tanks
(for fish farming or RAS systems)
- Sludge stabilization tanks,
SBRs (sequencing batch reactors)
- Oxygenation systems for
lakes, lagoons, greywater reuse systems
Operational considerations:
- Air supply: Use a blower or compressor
sized for the tank aeration demand. Clean, dry, oil-free air improves
membrane life.
- Manifold layout: Plan the header system so
air is evenly distributed, pressure drop is manageable, and each diffuser
operates within its intended flow range.
- Placement: Install the diffuser near
the bottom of the tank (or at a suitable depth) to allow bubbles to travel
upward through the water column, maximizing contact time and oxygen
transfer.
- Maintenance: Periodically inspect
bubble pattern. Uniform many fine bubbles is ideal; large slug bubbles or
uneven distribution may indicate clogging or membrane wear.
- Cleaning/back-flush: If fouling occurs (in
high-solids or high biological loading environments), consider
intermittent air scour or back-flush strategies, though the wide spacing
and durable membrane reduce this need.
- Replacement planning: Membrane life will depend
on operating conditions, but the robust EPDM membrane and simple tube
design make replacement predictable and relatively simple.
Advantages Over Other Diffuser Types
When
compared to coarse-bubble diffusers or some older aeration methods, the LTF-550
offers:
- Higher oxygen transfer per
volume of air —
fine bubbles rise slower, giving more time for oxygen to dissolve and
diffuse into the water.
- Better mixing and more
uniform oxygen distribution — the tube diffusers release bubbles along
their length, improving mixing across the basin floor.
- Lower energy consumption and blower load because of lower pressure drop and effi
- Compact footprint and easy
retrofit —
the lengthwise tube design is space-efficient, and lighter construction
simplifies handling.
- Reduced maintenance — fewer moving parts,
robust materials, simple installation all contribute to lower lifecycle
cost.
Design & Installation Tips (for Users)
- Ensure the manifold and headers are properly sized for the airflow range of each diffuser (e.g., the LTF-550’s specified 50–250 L/min) so that each unit
receives correct air volume.
- Space diffusers evenly
across the tank floor (or along the manifold) to avoid dead zones or
uneven aeration.
- Install at sufficient water
depth to allow bubble travel time; while fine-bubble diffusers are
efficient, depth still helps maximize contact time.
- Use corrosion-resistant
manifold material (e.g., stainless steel, PVC, or coated pipe) especially
in harsh industrial wastewater environments.
- Maintain air supply
cleanliness—oil, particulates or moisture in the blower air stream can
shorten membrane life or clog holes.
- Periodically observe bubble
patterns: For correct operation, the diffuser should produce many fine,
uniformly distributed bubbles; large bubbles or channeling may signal
problems.
- Consider stocking spare
diffusers or membranes so that replacements can be done quickly if needed,
reducing downtime.
- Ensure back-flow prevention:
when air supply is off, the diffuser design should prevent sludge or water
from flowing back into the air lines – this is often built-in but worth
verifying.
Limitations & Considerations
- Although tube diffusers like
the LTF-550 are efficient, they may still be susceptible to fouling in
high-solids or high biological load basins — proper maintenance is
necessary.
- The fine-bubble advantage is
best realized when the diffuser is installed at adequate depth; shallow
installations may not yield full benefit.
- Air distribution system must
be well designed—if one diffuser is starved of air or manifold pressure is
uneven, overall performance suffers.
- EPDM membranes are excellent
for many conditions, but extremely aggressive chemical environments
(strong oxidisers, acids/alkalis) may require alternative materials or
special designs.
- While tube diffusers are
economical, disc diffusers or other advanced aeration technologies might
deliver even higher OTE in certain specialized applications—so selection
should be based on system design and performance requirements.
Summary
The
Fine Bubble Tube Diffuser LTF-550 is a high-performance, robust, and efficientaeration device ideal for modern wastewater and aquaculture treatment systems.With its strong EPDM membrane, low pressure drop design, large effective
surface area and relatively compact footprint, it offers an excellent balance
of performance and cost-efficiency.
Its
ability to deliver fine bubbles, high oxygen transfer, and uniform mixing make
it well suited to activated sludge basins, SBRs, fish farms and industrial
treatment plants. With proper installation, maintenance and air supply design,
the LTF-550 can significantly improve oxygenation, reduce energy consumption
and extend system life.
If
you like, I can assemble a full datasheet (with performance curves,
head-loss vs airflow charts, bubble size distribution, life-cycle data) for the
LTF-550 to help you with engineering design or tender documentation.
| Fine Bubble Tube Diffuser (LTF-550) | Product Name Fine Bubble Tube Diffuser (LTF-550) Model LTF-550 Type Fine Bubble Tube Diffuser Brand / Manufacturer LONGTECH / Indian Carbon Diffuser Length Approx. 548 mm Outer Diameter Approx. 64 mm Weight ~750 g Membrane Material EPDM Rubber Body Material ABS or Reinforced Compound Plastic Connection Size PT ¾" or PT 1" Female Thread Air Flow Rate Range 50 – 250 L/min Operating Temperature 0°C – 80°C (approx.) Bubble Size Fine bubbles (1 – 3 mm) Oxygen Transfer Efficiency High Pressure Loss Low Backflow Prevention Yes (self-closing design) Installation Method Mounted on air manifold or header Maintenance Low maintenance; easy membrane replacement Applications Wastewater treatment, aquaculture aeration, industrial effluent treatment, SBR systems, sludge aeration tanks Design Features Wide-space design to avoid clogging; uniform bubble distribution; high efficiency at low pressure Country of Origin Taiwan / Imported by Indian Carbon Certifications ISO 9001 / CE Compliant (if applicable) |
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