An organic fertilizer fermentation tank is a device that converts organic solid waste into organic fertilizer through aerobic fermentation of microorganisms in a closed container. It utilizes the decomposition of microorganisms in nature, matures the materials through high temperature and microbial activity, kills harmful substances and reduces the moisture content and volume of the materials.

The working principle is to deliver oxygen to the materials in the tank through a vortex air pump, and continuously turn the materials under the action of the stirring shaft to maintain the activity of aerobic bacteria. These microorganisms will gradually heat up to 50-65 degrees. After about 7 days of high-temperature fermentation, they effectively kill insect eggs, pathogens and weed seeds, reaching the standards of harmless treatment. The entire fermentation process is highly automated, improving production efficiency.

In livestock farming, processed via microbial action, fermented poultry excreta becomes biofertilizer rich in nitrogenous compounds like ammonia, urea, nitrates, phosphorous, and organic matter. This enhances waste utilization and soil fertility, promoting improved plant growth and high yields.