Pig manure organic fertilizer production lines often generate unpleasant odors during operation, which can stem from multiple factors.
- Nature of the Raw Materials
Pig manure itself is a key source of odor. Rich in organic matter like undigested proteins, fats, and fibers, it releases smelly gases such as ammonia and hydrogen sulfide during decomposition. The pigs’ diet and digestive systems also contribute to the manure’s strong odor potential.
- Chemical Reactions During Fermentation
Organic Matter Breakdown: In the early stages, rapid decomposition of easily degradable organics consumes oxygen, creating low-oxygen zones that produce small organic molecules and hydrogen sulfide. Rising pH levels later trigger ammonia release.
Microbial Byproducts: Microbes breaking down organic matter release smelly compounds like low-chain fatty acids and alcohols.
- Temperature andHumidity Control
Poor control of temperature and humidity during fermentation can worsen odor issues. Incomplete decomposition due to overly high or low temperatures leaves behind undigested organic matter, releasing odors.
- Storage andTransportation
Leaky storage containers or transport equipment allow odor-causing gases to escape. Prolonged manure piles during storage trap heat, speeding up decomposition and odor production.
- Equipment Hygiene
Uncleaned equipment, such as fermentation tanks, conveyor belts, and fertilizer granulators, can accumulate residual manure that continues to emit odors.
Understanding the reasons why pig manure organic fertilizer production lines are prone to produce odors will help us take targeted measures to control and reduce the generation of odors, improve the quality of the production environment, and achieve environmentally friendly and efficient production goals.