Weltec Biopower introduces MULTI Mix

May 13, 2013
May 13, 2013 – Weltec Biopower has developed a liquid input system called MULTI Mix that prevents outages and safeguards the technical stability of AD systems.


With Weltec Biopower's MULTI Mix, fibrous and sticky input materials such as grass silage, solid manure or co-substrates are comminuted, increasing their surface so that it is suitable for bacteria. It also separates foreign matters like rocks or metals prior to input and decreases the risk of the pumps and agitation systems incurring damage as well as buildup occurring in the fermenter and in the pipelines.

The retrofittable system is installed between the dosificator and the fermenters. The substrates are taken from the dosificator and added to the MULTI Mix where they are mixed with recirculate. This mashing process is supported by a screw system which roughens the fibres at the same time. Before the long-fibre substrates and lumpy materials are transported to the macerator and are effectively comminuted, an upstream process reliably separates the extraneous materials prior to being conveyed to the pump.

During input in the fermenter, the previously long-fibre substances are optimum size, and are also pre-homogenised by being mixed with the liquid. The fermenter is supplied with the mashed biosuspension.

The company says that MULTI Mix reduces the risk of floating or sinking layers developing in the fermenter, decreasing the amount of agitation required and the wear and tear of the entire system. The lower vulnerability to damage results in a significant increase in the pump‘s typical service life, boosting in turn the system‘s availability.

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