In organic fertilizer production lines, the fermentation process is crucial for determining product quality. Here are the key quality control measures to focus on:
- Raw Material Selection andPre-Treatment
Quality starts with raw materials. Use fresh organic waste like livestock manure or crop straw, avoiding contaminants. For materials like straw, crush them to 1-3 cm pieces. This increases surface area, making decomposition easier for microbes.
- Microbial Management
Microorganisms are the driving force behind fermentation. Choose high-quality fermentation inoculants containing beneficial microbes like yeast and lactic acid bacteria. Apply 1-2 kg of inoculant per cubic meter of material. Maintain proper temperature and humidity to support microbial activity.
- Fermentation Parameter Control
Temperature: Quickly raise temperatures to 60-70°C during initial fermentation to kill pathogens and weed seeds. Use compost turning machines to adjust heat and prevent overheating.
Moisture: Keep moisture at 50%-60%. Low moisture slows microbes; high moisture reduces airflow.
Aeration: Turn the pile every 2-3 days using machinery to ensure oxygen supply. This supports aerobic microbes and speeds up decomposition.
- Timing the Fermentation
Fermentation typically takes 15-30 days, varying by materials and conditions. Check for completion by monitoring temperature, smell, color, and texture. Finished compost should feel cool (near room temperature), have a mild earthy smell, dark color, and crumbly texture.
Through the above key quality control measures, the efficiency and stability of the fermentation process of the organic fertilizer production line can be ensured, and high-quality organic fertilizer can be produced.