Weltec Biopower developed a rugged liquid input system which prevents outages and safeguards the technical stability of AD systems, increasing productivity as a result of the flexibility of the input materials as an alternative to using expensive maize grass.
The energy potential of grass silage or whole plant silage (WPS) is very high. Frequently, bacteria are not capable, though, of completely processing carbohydrates and proteins to biogas as a result of their long, smooth surfaces. With MULTIMix, fibrous and sticky input materials such as grass silage, solid manure or co-substrates are comminuted, thus increasing their surface so that it is suitable for bacteria. In addition, the technology 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 retrofit system is installed between the dosificator and the fermenters with the substrates are taken from the dosificator and added to the MULTIMix where they are mixed with recirculate. This mashing process is supported by a screw system which roughens the fibers at the same time. Before the long-fiber 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. The difference between the MULTIMix and other similar technologies is that Weltec’s innovation allows the fermenter during input to cut out the previously long-fiver substances that do not have the optimum size. They are already pre-homogenized by being mixed with the liquid, allowing the fermenter to be supplied with the mashed biosuspension.
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