BIOdek® vertical flow fills form vertical channels and have open interfaces. Thus the sludge of thick biofilms does not accumulate and solids are easily expelled. The fill’s reinforced edges increase the bearing capacity and give a high resistance to erosion.

Trickling filters and submerged fixed beds must have a balance between the new growth of biomass and the surplus sludge discharge. For higher organic loads due to strong growth of biomass, BIOdek® vertical flow fills have been designed. Their vertical channels in form of hexagon tubes facilitate the sludge discharge by water- or air flushing.

In all sewage treatment processes, the weight loads by biofilm and water as well as the fill depth have to be considered. Our fills can be designed for permanent loads up to 10.000 kg/m². The design procedure is TÜV certified.

Features of BIOdek® Fills

BIOdek® fills are resistant to rot, fungi and most dissolved chemicals. They are UV-stabilized. The fills are supplied as complete modules or – for bigger projects – as foils for assembly on site. Our welding technology is environmentally friendly as we do not need to use any solvent-containing adhesives.

Design and engineering support

Optimized operation parameters and a reactor configuration adapted to the fills increase the treatment efficiency. Make use of our experts’ long years of experience and contact us for design and engineering support.


Material PP PVC
Void ratio(%) >97%
Length max (mm) 2400
Width max (mm) 600
Standard height (mm) 305 or 610
Continuous operation temperature (°C) 70 55
Max. operation temperature (short term) (°C) 80 60
Note Channel diameter = 2x corrugation height
Material Specific surface area Corrugation height Application
m2/m3 mm Trickling Filter Submerged Fixed Bed
KVP318 PP* 150 18 Moderately polluted water – medium load Nitrification
KVP319/ 619** PP 140 19 Moderately polluted water – medium load Nitrification / Carbonaceous Oxidation
KVP323/ 623 PP* 125 23 Strongly polluted water – high load Carbonaceous oxidation
Notes The first figure of the article number indicates the standard height, e.g. KVP 323 = standard height 305 mm, KVP 623 standard height 610 mm
* also available in PVC with max. operation temperature of 60 °C “Additional feature of KVP 319: Channels have horizontal connections

We offer innovative components and solutions for sustainable processes in heat exchange, water and wastewater treatment and mass transfer applications with respect for the environment. Our professional team works to increase productivity and cost effectiveness in your unique application. If you need a tailor made solution ... We are available for you!