The Xylem range of mixers and pumps are designed for substrate mixing and pumping during biogas production.
Globally, the number of biogas plants is increasing, as is the average output from each plant.
One of the most crucial biogas process areas concerns the pumping and mixing of the biological substrate.
Typically, high-performance mixers are needed in an anaerobic digestion (AD) fermenter, as they maintain the homogeneity of the substrate, which helps improve the distribution of both bacteria and heat.
Xylem designs and manufactures dry and submersible pumps and mixers, as well as monitoring and control equipment, for use in biogas production.
Xylem's Flygt brand is suited for use in bioreactors, the company says.
The Flygt 4460’s ‘banana’ propeller has optimised submersible pumping capabilities, while providing self-cleaning, and preventing clogging of the fibrous substrate media found in a bioreactor, Xylem says.
Flygt banana mixers offer flexibility in terms of positioning and alignment, which means they can be aligned for different reactors, both in height and direction, Xylem adds.
These mixers are available with three different drive units, with propeller diameters varying between 1,400 to 2,500 mm.
Meanwhile, Flygt F3000 chopper pumps are designed for pumping media with a high dry matter content, and feature cutting impellers with hardened edges.
The N series pumps feature N-impeller technology to reduce the risk of blockages, whereas Flygt D and F series pumps are designed for pumping drainage water and other liquids suitable for biogas production.