The advancement of fertilizer production lines has significantly optimized the bio-organic fertilizer making process by integrating specialized equipment such as compost turners, crushers, mixers, and granulators. This systematic approach ensures efficient fermentation of organic waste, uniform mixing of microbial agents, and precise granulation for enhanced nutrient delivery. Automated control systems maintain critical quality parameters—including moisture, pH, and microbial activity—to meet international biofertilizer standards. The streamlined production not only accelerates output but also improves product consistency, enabling large-scale manufacturing of eco-friendly fertilizers that support sustainable agriculture while complying with organic certification requirements.
1. Core Equipment for Biofertilizer Production
- Raw Material Pretreatment
- Crusher
- Screening machine
- Mixer
- Moisture adjustment equipment
- Fermentation System
- Tank-type compost turner
- Windrow turner
- Fermentation tank (closed)
- Temperature & humidity control
- Granulation & Post-treatment
- Disc/drum granulator
- Dryer
- Cooler
- Packaging system
- Microbial Inoculation System
- Liquid inoculum applicator
- Solid inoculum mixer
- Aseptic inoculation room
Professional advice: Small-medium scale production lines should opt for modular equipment for future expansion, while large-scale production requires automated continuous lines for better efficiency and consistency.
2. Biofertilizer Manufacturing Process
- Raw Material Preparation
Main materials include livestock manure, crop straw, food processing waste, etc. Control C/N ratio (25-30:1), moisture (50-60%), and pH (6.5-7.5).
- Aerobic Fermentation
Temperature control is critical – maintain 55-65°C for 5-7 days to kill pathogens. Total fermentation period is 15-30 days. Modern processes use forced aeration + turning.
- Microbial Inoculation
Use composite strains (N-fixing, P/K-solubilizing bacteria). Inoculation rate is typically 1-5%, done below 40°C to protect microbes.
- Granulation & Post-treatment
Choose granulation method based on product requirements (disc granulator suits high-organic materials). Drying temperature ≤80°C to preserve microbial activity.
3. Key Quality Control Parameters
- Viable bacteria count ≥0.2×10⁸/g (National standard)
- Organic matter content ≥30%
- Moisture content ≤30%
- Heavy metals within limits
- Complete sterilization (Ascaris egg mortality ≥95%)
