Products

Over forty years of experience in microbubble diffusion for municipal and industrial wastewater treatment.

Expertise in plant engineering

The microbubble diffusers we manufacture are the result of over forty years of experience in the field and are installed, to date, in more than 10,000 plants: they generate excellent mixing and high oxygenation of the municipal and industrial wastewater they treat. Microbubble size — fine Ø2-3 mm, medium Ø2-5 mm, coarse Ø5-12 mm — depends on the grain size in ceramic diffusers and on the air volume injected in elastomer diffusers.

The smaller the microbubble diameter, the greater their number, and therefore the greater the total exchange surface between the oxygen contained in the bubbles and the wastewater. Microbubbles rise through the tank at 28-30 cm/sec: fine or very fine bubbles, combined with a high diffuser submersion depth, guarantee the best possible oxygen transfer. Diffuser layout in the tank also matters, which is why we include it in every technical-economic proposal we prepare. We also recommend sizing multiple compressors in parallel — one running at full capacity, the others cutting in during demand peaks — for significant energy savings over time.

The full range: ceramic tube and disc microbubble diffusers; elastomer tube and disc microbubble diffusers; systems for extracting and introducing tubular groups in full tanks; floor-anchored air distribution networks for disc and tube diffusers; improved spare parts for systems in use or conversion to our models. We also manufacture diffusers dedicated to biogas filtration, O2-CO2 diffusion, fish farming, primary water filtration and aerating filters for tanks and aqueducts.

Quartz

Ceramic quartz diffusers

Sintered tubes and discs in silica sand and epoxy binder, for fine and durable oxygenation in continuous-duty plants.

Microbubble tube diffuser in quartz

Microbubble tube diffusers in quartz

Sintered tubes made of selected silica sand and epoxy binder, designed for flexible mounting in groups of 1 to 5 units on manifolds with a standard 400 mm centre distance, single or double comb layout.

Standard sizes
Ø70 x 40 x L500 mm — Ø70 x 40 x L750 mm
Porosity
fine 60 micron, medium 100 micron, coarse 250 micron (on request)
Design flow rate
Nmc/h 12 per m/diffuser, fine bubble
Mounting
groups of 1-5 units, manifolds with more positions/different centre distances on request; floor brackets for support, anchoring and level adjustment; can be mounted on a rigid riser or lifting arms to bring the group to working height
Duty
continuous
Microbubble disc diffuser in quartz

Microbubble disc diffusers in quartz

Sintered disc made of selected silica sand and epoxy binder, with built-in check valve, suitable for continuous duty.

Size
Ø250 x h42 mm
Diffusion surface
0.087 m²
Porosity and flow rate
fine 60 micron → Nmc/h 4-10; medium 100 micron → Nmc/h 4-12; coarse 250 micron (on request) → Nmc/h 6-18
Duty
continuous
Elastomer

Elastomer diffusers

Discs and tubular units in high-quality elastomer with built-in check valve: maximum elasticity for continuous or intermittent duty.

9 inch elastomer disc diffuser

Microbubble disc diffusers Ø9" in elastomer

Made of high-quality, highly elastic elastomer, with built-in check valve: suitable for both continuous and intermittent duty.

Size
Ø260 mm
Surface
0.037 m²
Micro-perforations
4,050
Design flow rate
Nmc/h 4
Oxygen transfer
the lower the flow rate, the higher the percentage of oxygen transferred
15 inch elastomer disc diffuser

Microbubble disc diffusers Ø15" in elastomer

Same construction quality as the Ø9" model, in a larger format for higher air flow rates; built-in check valve, continuous or intermittent duty.

Size
Ø386 mm
Surface
0.082 m²
Micro-perforations
9,690
Design flow rate
Nmc/h 8
Oxygen transfer
the lower the flow rate, the higher the percentage of oxygen transferred
Elastomer tube diffuser

Microbubble tube diffusers in elastomer

Tubular units in high-quality, highly elastic elastomer, mountable in groups of 1 to 5 with a standard 400 mm centre distance, single or double comb layout; counterweights anchored under the manifold allow the group to be introduced and extracted while the tank remains full.

Standard sizes
Ø69 x L500 mm (7,340 micro-perforations) — Ø69 x L750 mm (11,230 micro-perforations)
Porosity
proportional to the volume of air injected
Design flow rate
Nmc/h 8 m/diffuser fine bubble, Nmc/h 10 medium bubble, Nmc/h 12 coarse bubble
Mounting
manifolds with more positions/different centre distances on request; floor brackets; rigid riser or lifting arms to working height
Duty
continuous/intermittent
Air distribution

Air distribution networks

Pre-assembled polypropylene or AISI networks, polyfusion welded, connecting diffusers to the air supply with maximum tightness.

Air distribution network

Pre-assembled air distribution networks

Made of polypropylene, a material that allows polyfusion welding with 92-95% of the resistance of drawn pipe; also available in AISI on request. Main pipes are sized for an air velocity not exceeding 15 m/sec, with a free PN10 flange for connection to the riser pipe supplied by the customer. Diffuser feed pipes Ø90 branch off the main pipe, anchored to the floor with adjustable brackets and joined with quick PP couplings that absorb longitudinal expansion. The pipe ends are connected with Ø32 PP pipe and quick couplings to form a condensate collection loop, with a condensate drain valve positioned above the hydraulic head. The distance between diffusers and between rows is set case by case to optimise mixing and oxygenation of the wastewater.

Material
polypropylene (polyfusion welded) or AISI on request
Air velocity
≤ 15 m/sec
Connection
free PN10 flange
Extraction

Full-tank extraction systems

Components for maintenance and extraction of diffuser groups without having to empty the tank.

Full-tank extraction system

Full-tank group extraction systems

Components designed to allow maintenance and extraction of diffuser groups without having to empty the tank:

Rigid riser
with ball valve and M/F conical-seat fitting
Lifting arm
to bring the group to the surface at working height
Multi-position manifolds
for slab layouts
Other applications

Other applications

Porous solutions for specific uses that call for the same fine air or gas diffusion characteristics.

Other applications

Other applications

Besides our standard diffusers for municipal and industrial treatment, we manufacture porous solutions for specific uses that call for the same fine air or gas diffusion characteristics:

Porous pipes
for primary water filtration
Aerating filters
for fish farming
Aerating filters
for tanks and aqueducts
Porous pipe
for biogas filtration