AD pretreatment improves viscosity and CH4 release.

The results of Alps Ecoscience’s AD pretreatment (Anaerobic Digestion) are clearly visible in this latest video from one of our pilot plants. It’s hard to believe the impact but the lumpy, grey coloured substrate from the bottom of the tank becomes the rich dark liquid after four simple optimisation steps.

4 step substrate pre-treatment process

Alps Ecoscience analyse the feedstock and categorise it. Then they add specific bio-organic catalysts to it and continually stir. This pre-treatment encourages solubilisation and optimises the substrate for hydrolysis, the first, and most critical of the four stages of Anaerobic Digestion (AD).

When the rich, velvety pre-treated substrate solution is added to an AD reactor it decomposes more thoroughly yielding higher concentrations of CH4 from the same waste volume. It will also produce higher quality liquid fertiliser and less dry matter which can improve site throughput time.

Boost in CH4 release through enhanced Hydrolysis

At production scale the lower viscosity substrate reduces power consumption and stoppages, further improving reactor stability. In this example, we see CH4 output at 66.85%, an increase of 4 percentage points from the previous days untreated sample. In gas to grid reactors where there are no constraints on output there is potential to increase this biogas yield even further. It is additional evidence of the impact Alps Ecoscience’ substate pretreatment can have on the function and overall performance of an AD facility.

To find out more about biogas plant optimisation and the impact solutions like pilot plants and AD substrate pre-treatment can have in your Anaerobic Digestion facility please get in touch. Alps Ecoscience is always happy to sample and conduct tests on your specific feed stock and reactor configuration.

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