Efficient bio-media in
biological water purification

RK BioElements are injection moulded in Polypropylene, which together with the special design gives form stable, uniform elements with great breaking strength and a very long life. The unique design also means that RK BioElements cannot "wedge" together, which ensures an easy and simple cleaning of the filters.

Unique design

The patented asymmetrical design distinguishes itself by ensuring an optimum flow through the filter. Since RK BioElements combine a good flow with a large surface area of 750 m2/m3, the filters work with very high turnover rates. This makes it possible to achieve environmental gains in the form of a reduced energy and water consumption.


RK BioElements offer many exciting possibilities and can be used in all types of biological water treatment plants in connection with both nitrification to denitrification.

Upcoming fairs

RK Bioelements verdenskort

Technical specifications

RK BioElements come in three standard versions

RK BioElements have a multitude of possibilities within biological water treatment. RK BioElements can also be supplied with customer specified density between 0.93 g/cm3 and 1.2 g/cm3.

RK BioElements are produced in Polypropylene (PP), which contains no halogens, and can be recycled or disposed of by incineration, where the end product is exclusively water and carbon dioxide.

For further information please see the data sheets below.

RK BioElements, Light

RK BioElements, Light:

Density: 0,93 g/cm3

RK BioElements, Medium

RK BioElements, Medium:

Density: 1,00 g/cm3

RK BioElements, Heavy

RK BioElements, Heavy:

Density: 1,20 g/cm3