Combined
Packing Media

Combined (combinational) bio packing combines the advantages of semi-soft and soft fillers — a plastic ring skeleton with aldehyde-acetal fibre, giving a large surface, fast film formation and good cutting of air bubbles for efficient biological contact oxidation.

Request a Quote Technical Details

Semi-soft + softType

150 mmRing size

12012m²/m³

Fast filmFormation

Type

Combined bio packing

Ring size

150 mm

Surface area

up to 12012 m²/m³

Porosity

>96%

Film formation

~half of others

Why this media

Best of both fillers,
fast start-up

The combined structure keeps the strength and durability of plastic and the biofilm performance of soft fibre, while avoiding the drawbacks of soft fillers.

Combines semi-soft & soft

The double ring + aldehyde-acetal fibre structure takes the best of semi-soft and soft fillers, overcoming soft-filler tangling and low surface area.

Fast film, no clogging

Easy film formation with no clogging; film time is about half that of other media, reaching full load in 6–7 days at 18–30 ℃.

High surface & aeration

Snow-flake plastic branches support film while cutting air bubbles, raising oxygen transfer and efficient organic removal.

Specifications

Technical parameters

Model	Ring size / mm	Mass / g	Bulk density / kg/m³	Porosity / %	Surface area / m²/m³
LF-150-40	150	4.8–5.2	6.2–6.7	>96	12012
LF-150-60	150	4.8–5.2	4.6–5.0	>96	8743
LF-150-80	150	4.8–5.2	3.6–3.9	>96	6449

Structure	Double large plastic ring + acetal fibre / polyester filament + snow-flake plastic branches
Shield packing surface	1000–2500 m²/m³, porosity 98–99%
Shield packing removal	COD 70–85% · BOD₅ 80–90% (normal hydraulic load)
Organic load	Reactor load up to 8.0 kg COD/(m³·d); 7.0 kg COD/(m³·d) at 90% COD removal
Application	Biological contact oxidation; aerobic & high-strength anaerobic wastewater
MOQ / price	On request — confirm type, quantity & destination

Applications

Where it fits

Biological contact oxidationContact oxidation towers / tanks / troughsMunicipal & industrial wastewaterPetrochemical / papermaking / food / brewingTextile / printing / pharmaceuticalHigh-strength anaerobic wastewater

Product gallery