Fermentation cover film, also known as composting film, aerobic fermentation film, or nano-fermentation film, is a functional covering material used for the aerobic fermentation of organic solid waste. The core material is typically expanded polytetrafluoroethylene (ePTFE) membrane, combined with a substrate such as polyurethane. Specifically designed for covering solid organic waste during aerobic fermentation, it precisely controls the gas and liquid exchange properties of the membrane, allowing oxygen to enter and carbon dioxide to exit, while simultaneously preventing moisture loss and odor emission. It is a core environmentally friendly material for open-air composting and fermentation.

This aerobic fermentation process for solid organic waste is suitable for large-scale livestock and poultry farms, environmental treatment plants, and organic fertilizer production enterprises, and can handle materials such as livestock and poultry manure, municipal sludge, agricultural straw, kitchen waste, and garden waste.

1.It is breathable but impermeable to liquids, allowing oxygen penetration to ensure aerobic fermentation while preventing moisture loss from the compost pile and preventing rainwater infiltration, and also blocking odor emission;
2.It provides insulation and inhibits bacterial growth, maintaining a uniform and stable temperature in the compost pile (≥55℃), quickly killing pathogens and insect eggs, and improving fermentation efficiency;
3.It is environmentally friendly and reduces emissions, with an odor blocking rate of over 95% for ammonia and hydrogen sulfide, reducing nitrogen loss and preventing the spread of dust and microbial aerosols;
4.It is weather-resistant and durable, resistant to UV radiation, acid and alkali corrosion, and mechanical wear, with an outdoor service life of 3-5 years;
5.It is low-cost and easy to operate, requiring no complex facilities; it can be used outdoors simply by covering the compost pile with the membrane. When used with an aeration system, it enables uniform fermentation and shortens the fermentation cycle by 20-30%.

1. Harmless treatment and resource utilization of livestock and poultry manure from large-scale farms;
2. Aerobic fermentation, volume reduction, and harmless treatment of municipal sludge and kitchen waste;
3. Composting and fermentation of agricultural straw and garden waste to produce organic compost;
4. Improving the quality and production efficiency of organic fertilizers through open-air composting and fermentation in organic fertilizer production enterprises;
5. Covered composting projects for centralized treatment of rural organic waste.