Analysis of the links that are prone to produce odor in the pig manure organic fertilizer production line

During the fermentation process of pig manure organic fertilizer production lines, these stages are most likely to cause odor issues:

Raw Material Handling

1. Manure Collection and Storage: Untreated manure piles during collection and storage can start decomposing naturally, releasing odors. Poor ventilation in storage areas worsens the problem.  

2. Mixing Raw Materials: Uneven blending of manure with additives (like straw or sawdust) may cause patchy fermentation, leading to odor emission.

Fermentation Process  

1. Poor Parameter Control: Incorrect temperature, moisture, or air supply disrupts fermentation. For example, extreme heat or cold, improper humidity, or insufficient oxygen often result in incomplete decomposition and odors. 

2. Short Fermentation Time: Stopping fermentation too early (under 7-10 days) leaves manure under-processed, continuing odor release.  

3. Delayed Turning: Irregular use of compost turning machines cause uneven oxygen distribution. Unturned areas undergo anaerobic fermentation, producing strong smells.

Equipment and Environment

1. Machine Failures: Broken ventilation systems, mixers, or leaky fermentation tanks disrupt proper fermentation and allow odor leaks.  

2. Weather and Ventilation: Hot, humid conditions speed up fermentation and odor release. Poor airflow in processing areas traps odors, raising concentration levels.

Understanding the links in the pig manure organic fertilizer production line where odor is likely to occur can help producers take targeted measures, such as improving equipment, optimizing processes, and strengthening environmental management, thereby reducing odor generation and achieving green and environmentally friendly production.