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Shampost - compost after growing champignons

15.01.2021

Spanish scientists in a common project have developed a technology that allows you to recycle compost after growing champignon mushrooms.

In general, the compost for growing champignons has several components, in particular, straw, horse or bird droppings, etc. are added. It is watered and compacted. But the problem is that then this compost needs to be disposed of. They found a way out: compost utilization occurs through a biogas plant. The pilot project was launched in the Rioja region, which is mainly known for winemaking. But in fact, Rioja is also the largest region in Spain where champignons are grown.

In 2018, within the framework of a European project, a biogas plant was built, which produces the so-called "shampost" (two words - "champignon" and "compost" were put together). The recycling process began in September this year. Capacities - up to 100 thousand tons.

The production technology is quite simple: three containers are built at a 50 kW plant, the compost enters the container for hydrolysis, then it is cleaned of stones and other impurities, liquid digestate is added, then it goes into another container, where fermentation takes place, then the resulting gas is separated, the remains dried into granules. These granules are used for the production of natural organic fertilizers. They are used for growing vegetables in greenhouses and in the open field, as well as for other crops.

Europeans protested fertilizers in Serbia, where they showed their effectiveness.

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