As a green and environmentally friendly agricultural production tool, organic fertilizer may cause certain pollution problems in its production process, mainly including wastewater, waste gas, odor, waste residue and other pollutants. In response to these problems, a series of measures need to be taken to solve them, to ensure the hygiene and safety of the production environment, and at the same time ensure the quality and effect of organic fertilizer.

1. Wastewater treatment: In the production process of organic fertilizer, wastewater is an unavoidable problem. Wastewater may contain pollutants such as organic matter, inorganic salts and microorganisms, which will pollute the environment if directly discharged. Therefore, wastewater needs to be treated. Common treatment methods include biochemical treatment, physical and chemical treatment and deep treatment.

2. Waste gas treatment: The waste gas generated in the production process of organic fertilizer mainly comes from gases such as carbon dioxide and ammonia released during the fermentation process, as well as smoke particles generated during the drying process. If these waste gases are not treated, they will pollute the air quality and the environment.

3. Odor control: The production of organic fertilizer is often accompanied by the release of odor and odor, which brings troubles to the surrounding environment and residents. Odor mainly comes from volatile gases and gases such as hydrogen sulfide released during the fermentation process, and measures need to be taken to control them.

Methods of odor control include closed fermentation, spraying biological purifiers, and using activated carbon adsorption. Closed fermentation can reduce the expansion of odor, keep fermentation in a closed environment, and reduce the impact on the surrounding environment. Spraying biological purifiers can degrade organic matter and reduce the release of odor. Using activated carbon adsorption can adsorb volatile organic matter in odor and purify the air.

4. Waste residue treatment: A large amount of waste residue, such as solid waste, filter residue, sediment, etc., will be generated during the production of organic fertilizer. If these waste residues are not treated and utilized, they will cause secondary pollution to the environment and reduce the utilization rate of resources.

Methods of waste residue treatment include composting, incineration, and resource utilization. Composting is to compost and ferment waste residues to produce organic fertilizers and realize waste resource utilization. Incineration is to incinerate waste residues at high temperature to convert them into ash and flue gas, reduce volume, and reduce impact on the environment. Resource utilization is to extract useful components from waste residues and use them for other purposes to reduce waste.