These pumps are primarily used for the transfer of liquid materials, such as digestate and liquid animal manure, between key stages of the process—from primary tanks to fermenters, from final tanks to separators, and between digesters.
Certain models are equipped with a grinder knife system, designed to shred larger organic particles within the liquid, including straw, maize particles, forages, and other fibrous materials. This ensures smoother operation and prevents blockages in the system.

Submersible mixers are the industry standard for achieving efficient and reliable mixing in biogas plants and animal farms. These high-performance mixers operate directly within the liquid, ensuring optimal homogenization and effectively preventing sedimentation. Their robust design and reliable operation make them essential for maintaining process efficiency and system stability.

Biogas power plants and animal farms use separation systems to effectively separate solid materials from the liquid fraction generated during the production process, commonly referred to as digestate or animal manure. This process yields both a dry solid fraction and a liquid fraction, both of which serve as valuable organic fertilizers. The specific application of these byproducts – solid or liquid – is determined by the type of crops being cultivated.

• Complete overhaul

This includes the replacement of all wear parts and bearings, the refurbishment of electrical motors (including recycling and rewinding as required), the replacement or recycling of broken components, and other related services.

• On site repairs

As with all industrial machinery, regular on-site maintenance and repairs are essential for optimal performance and longevity. These activities typically include:– oil change, sealing and cartridges replacement, cleaning, worn blades replacement, repair of damaged cables, and other necessary maintenance procedures.

• Installation of new machines

Our clients can rely on Shkretov EOOD for prompt and professional installation of their new mixer, separator or pump.

• Full maintenance subscription

This solution is highly recommended for clients requiring uninterrupted operation of their equipment under all working conditions. Our offering covers a wide range of machinery, including pumps, mixers, feeders, screw pumps, lobe pumps, and more.

We provide a comprehensive subscription-based service, eliminating any repair or maintenance responsibilities for plant operators. Our team handles everything on your behalf—from routine maintenance to emergency repairs, ensuring seamless and efficient operation of your equipment at all times.