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Sedimentation & Desanding

Tube Settler
Media

Hexagonal honeycomb and lamella inclined-tube media for sedimentation and desanding — Φ25/35/50/60/80/90mm in PP, FRP and stainless steel. Its large wetted perimeter and small hydraulic radius keep flow laminar, so particles settle undisturbed and handling capacity rises to several times that of a flat basin.

Request a Quote Technical Details Sizing guide

Φ25–90Pore sizes mm

PP · FRP · SSMaterials

62–236m²/m³

3–5×Handling vs flat

Pore sizes

Φ25–90 mm

Materials

PP / FRP / SS

Panel size

1000×500×1000

Surface area

62–236 m²/m³

Porosity

93–97%

Why this media

Handles more, settles faster

The inclined-tube geometry creates laminar flow with a large wetted perimeter, so solids drop out undisturbed at a far higher hydraulic load.

Laminar, undisturbed settling

Large wetted perimeter and small hydraulic radius keep flow laminar, so particles settle without turbulence interference.

Up to 5x the handling capacity

At V₀ 2.5–3.0 mm/s and a load of 3–5 t/m²·h, handling is roughly 3–5× a flat settler and 2–3× a shallow tank.

Multiple materials, long life

Available in PP, FRP and stainless steel; co-polymer based media can extend service to 8–10 years in water.

Structure & characteristics

Built for efficient, stable settling

Hexagonal honeycomb and lamella inclined-tube media assembled from straight hexagonal tubes, available with inclined or straight passages in PP, PVC, co-polymer or FRP.

Honeycomb cells

Straight hexagonal tubes form the honeycomb body — PP, PVC, co-polymer or FRP, in inclined or straight-tube form.

High surface, smooth walls

Surface area 133–360 m²/m³, porosity 97–98%, smooth tube walls and stack height 4–5 m.

Lamella (inclined) type

Co-polymer plastic lamella boards — Φ35/50/80mm, high toughness and assembly strength, long aging life.

COD removal 85–90%Organic load 2000–5000 g/m³·dSand load 50–100 kg/m²BOD ~128 g per tonne·day

Applications

Where it fits

Sedimentation & desandingInlet desandingIndustrial / municipal water settlingOil separationTailings thickeningNew build & old-tank retrofit

Specifications

Technical parameters

Choosing between tube settler and lamella plate media? The comparison guide covers geometry, installation angle, blocking risk and material choice.

Pore size, wall thickness and the installation angle all change what you order. See the sizing & specification guide for the calculation.

Material	Pore sizes	Thickness	Surface area	Porosity	Density
PP (polypropylene)	Φ25 / 35 / 50 / 80	0.5 – 0.8 mm	62 – 200 m²/m³	93 – 97%	22.8 – 46 kg/m³
FRP (glass fibre)	Φ25 – 60	0.5 mm	99 – 236 m²/m³	93 – 97%	42 – 95 kg/m³
Stainless steel (custom)	Φ25 / 35 / 50 / 60 / 80 / 90	0.5 – 0.8 mm	62 – 236 m²/m³	93 – 97%	On request

Panel size	1000 × 500 × 1000 mm
Installation angle	60°
Design velocity V₀	2.5 – 3.0 mm/s
Hydraulic load	3 – 5 t/m²·h
Lamella board thickness	0.4 / 0.5 / 0.8 mm (Φ35 / 50 / 80)
Stack height	4 – 5 m
COD removal	85 – 90%
Service life	PP 3–4 yrs; co-polymer up to 8–10 yrs
SKU	NWS-HXT series
MOQ / price	On request — confirm specification & destination

Product gallery

See the media up close

Common questions

Tube settler media questions buyers ask most

Straight answers on pore size, material, installation angle, quantity and price — the things usually settled after the first email.

What pore size should I specify?

PP modules are published in Φ25 / 35 / 50 / 80 mm, FRP in Φ25–60 mm, and custom stainless steel up to Φ90 mm. Smaller pores give more surface area per m³ and capture finer solids, but they blind sooner on fibrous or oily loads. Larger pores stay clean longer and suit high-solids and desanding duty. Tell us the solids type and we will confirm the pore size rather than leaving you to guess.

How do I calculate how much I need?

Size on surface loading rate, not tank volume: required settling area A = Q ÷ SLR, against a published hydraulic load of 3–5 t/m²·h. Multiply the area by the stack height (4–5 m) to get media volume in m³, then check the velocity inside the tubes against the design figure of 2.5–3.0 mm/s. The full worked example is in our sizing and specification guide.

What installation angle do the modules use?

60° from horizontal. The angle is not a free choice: steeper costs effective settling area, and shallower stops settled sludge sliding back down the tube wall, which blocks the channels. Because the modules are inclined, the settling area you gain is larger than the module footprint — which is why the calculation works in settling area first and media volume second.

PP, PVC, FRP or stainless steel?

PP is the default for general municipal and industrial duty, with a published service life of 3–4 years; co-polymer based media extends that to 8–10 years in water. FRP reaches the highest surface area at 99–236 m²/m³, useful where the tank footprint is fixed. Stainless steel is built to order for high-temperature or aggressive duty. Modules are also available in PP, PVC, co-polymer or FRP with inclined or straight passages.

How are the modules installed?

Stacked to a total height of 4–5 m on a support frame and restrained from above. Empty PP modules are light (22.8–46 kg/m³), so uplift or movement during drain-down is a real failure mode if they are not tied down. Most orders are retrofits into existing clarifiers, where modules are cut to fit around the existing weirs, launders and scrapers.

What does tube settler media cost?

Price is On request because it depends on material, pore size, sheet thickness, total volume, export packing and destination port. Send the flow rate, tank dimensions and target solids, and we quote against a confirmed specification rather than a list price that would not apply to your project.

Tube Settler
Media