Although organic fertilizer production lines can recycle agricultural waste, they are prone to generating waste gas, wastewater, solid waste, and noise pollution. Targeted measures are needed to address these issues and achieve green production.

To address waste gas pollution, comprehensive control is required from the source, through the process, and to the end-of-life. During fermentation, the carbon-nitrogen ratio of the raw materials should be controlled between 25:1 and 30:1, and deodorizing agents should be added to reduce odor. Raw materials should be transported using closed conveyor belts to prevent dust from escaping. Furthermore, gas hoods should be installed above the fermentation tanks and grinders to collect waste gas under negative pressure. Odors are then treated using a "spray tower + activated carbon adsorption tower" system. Dust is then filtered using a bag filter, and the collected dust can be reused in production.

Wastewater treatment requires a "collection-treatment-reuse" system. A dedicated pipeline network will be established to separately collect cleaning wastewater and leachate, which will be purified using a "screen + anaerobic reactor + aerobic aeration" process. The water that meets the standards can be used for raw material conditioning, equipment cleaning, or plant landscaping, achieving zero external discharge. An emergency wastewater pool will also be built to handle emergencies.

Solid waste treatment focuses on resource utilization. Screened stones and metal blocks will be collected by specialized agencies for recycling, and fine impurities will be reprocessed. Hazardous waste such as used engine oil and scrapped batteries must be handed over to qualified institutions for disposal and must not be discarded carelessly.

Noise control requires a multi-pronged approach. Low-noise organic fertilizer equipment should be prioritized; equipment should be equipped with soundproof enclosures and noise-proof forest belts should be planted along the plant perimeter; operators should be provided with protective equipment and work schedules should be rationally planned to avoid disturbing residents during nighttime construction.

In addition, an environmental protection system should be established, with clear responsibilities and employee training. Online monitoring equipment should be installed at discharge outlets, and facilities should be regularly inspected and maintained, and third-party testing should be commissioned to ensure the long-term implementation of environmental protection measures and contribute to the sustainable development of agricultural ecology.