Solutions to Production Difficulties in Bio-Organic Fertilizer Production Lines

Bio-organic fertilizer production lines often encounter challenges in raw materials, fermentation, equipment operation, and quality control. Through targeted, simple measures and process optimization, bottlenecks can be effectively overcome, ensuring stable production.

The core challenges of raw material pretreatment are uneven composition and excessive impurities. A "stratified sampling + manual blending" approach can be adopted: raw materials are sampled strata by stacking area. Moisture content is measured using a drying method (the sample is dried and then weighed to calculate moisture). The auxiliary materials are then mixed based on experience. If feces is wet and sticky, add pulverized straw at a ratio of 10:3; if it is dry, add an appropriate amount of water. Furthermore, workers are assigned to sort impurities such as plastic and stone from the raw materials. A small magnetic separator (low-cost and easy to operate) is used to remove metallic foreign matter. Samples from each batch of raw materials are sent to a third party for testing for heavy metals and antibiotics, mitigating risks at the source.

The difficulty in controlling temperature and humidity during fermentation, as well as exhaust gas pollution, can be addressed through "manual monitoring + process optimization." Dedicated personnel are assigned to monitor different points in the stack with thermometers and hygrometers every morning, noon, and evening. A two-step process of "high-temperature composting + low-temperature aging" is employed: the high-temperature period (55-65°C) lasts approximately eight days, with the compost turned every two days to kill pathogens. During the low-temperature period (25-35°C), the materials are moved to a cool, shaded area and covered with film to insulate and promote the growth of beneficial bacteria. To address waste gas emissions, a shallow pond is dug next to the fermentation workshop and filled with a mixture of straw and soil. This is used to direct the waste gas into the pond for absorption and odor reduction.

Issue of unstable equipment operation and disconnected quality control can be addressed through "equipment fine-tuning + manual spot checks." The crusher's screen is changed based on the hardness of the raw material (a fine-mesh screen is used for higher hardness), and the feed rate is manually controlled to ensure that the crushed material passes through a 20-mesh screen. The granulator's heating knob is manually adjusted, and the temperature is gradually adjusted during pilot production until the pellets are non-sticky and non-fragile. For quality control, samples are taken daily during the fermentation stage to measure organic matter using the incineration method (weight loss after incineration is calculated). pH test paper is used to measure pH after granulation. Finished products are sampled and tested by batch, avoiding quality control vulnerabilities that can arise from reliance on complex equipment.

These methods are simple to operate and low-cost, effectively addressing challenges in bio-organic fertilizer production lines and helping small and medium-sized bio-organic fertilizer manufacturers improve product quality and production efficiency.

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