Module BIO-ROXX

The BIO-ROXX is a powerful substrate treatment system for use in biogas plants. The module combines the process steps of mixing the liquid and solid and separating foreign matter, such as stones, before the substrate is pumped through a feed pump into the fermenter. The intensive mixing of the liquid and solid phase into a uniform, free-flowing mass improves fermentation, at the same time as also increasing the service life of the stator and rotor of the progressing cavity pump. 

The BIO-ROXX system is particularly suitable for mixing difficult, long-fibre substrates. It ideally prepares substrates, such as manure with straw, as well as crop and plant residue, such as corn cobs, rye straw, sorghum residue and leaves.

The automatic separation of stones and metal bodies increases operational safety and protects the entire biogas plant. This also reduces maintenance requirements.

The module comprises a tank holding approximately 1 cubic metre with openings for the solids feed (DN500), the liquid feed (DN80), and a stone trap and discharge pipe (DN200). The agitator is driven by a 7.5 kW motor and consists of 10 blades and paddles of different geometric shapes, plus struts to separate the foreign matter.