Domestic Waste Fermentation Covering Film, Permeable Membrane and Compost Fermentation Molecular

Introduction to Domestic Waste Fermentation Covering Film, Permeable Membrane and Compost Fermentation Molecular Membrane

With the accelerated advancement of municipal solid waste classification, harmless treatment and resource recycling worldwide, aerobic composting fermentation has become a mainstream eco-friendly technology for domestic waste disposal. Supporting functional membrane materials including domestic waste fermentation covering film, permeable membrane and compost fermentation molecular membrane are core auxiliary materials for standardized, low-odor and high-efficiency waste composting projects. These three series of membrane products adopt optimized polymer microporous modification technology, tailor-made for aerobic fermentation of household organic waste, kitchen waste and municipal compost raw materials, realizing intelligent gas separation, odor interception, water insulation and fermentation environment regulation.

1. Domestic Waste Fermentation Covering Film

The domestic waste fermentation covering film is a heavy-duty weather-resistant base protective membrane developed for whole-stack coverage of domestic waste fermentation piles. It adopts double-layer polyester base fabric coated with high-molecular anti-corrosion resin, featuring high tensile strength, UV resistance, acid and alkali resistance and anti-aging performance, adapting to long-term outdoor open-air composting working conditions.

As the basic outer protective layer of fermentation piles, this covering film isolates external rainwater, dust, bird droppings and extreme weather such as strong wind and high temperature, avoiding excess rainwater dilution of compost matrix, nutrient loss and secondary bacterial pollution. It locks internal fermentation heat steadily to maintain constant high-temperature fermentation environment, accelerate organic matter humification, kill pathogenic bacteria, weed seeds and harmful microorganisms in domestic waste, and meet sanitary disposal standards for municipal solid waste. Compared with ordinary plastic agricultural films, it boasts 3-5 times longer service life and targeted corrosion resistance to organic acid produced by domestic waste decomposition.

2. Compost Permeable Membrane

Compost permeable membrane is a semi-permeable functional breathable membrane upgraded on the basis of ordinary covering film, with uniform micron-level breathable pores distributed on the membrane surface. It breaks through the airtight defect of traditional fully-enclosed covering films, realizing directional air permeability and moisture conduction for aerobic composting fermentation.

During domestic waste aerobic fermentation, microbial decomposition consumes massive oxygen and produces carbon dioxide and water vapor. The permeable membrane freely exchanges oxygen and exhausts water vapor and carbon dioxide required for microbial metabolism, preventing anaerobic fermentation, material rancidity and prolonged composting cycle. Meanwhile, it intercepts fine compost particles, dust and external debris, balances internal humidity of fermentation piles, reduces manual turning frequency by 40%+, cuts operation costs, and guarantees stable aerobic fermentation efficiency for kitchen waste and household organic mixed waste.

3. Compost Fermentation Molecular Membrane

Compost fermentation molecular membrane is a high-end nano-level selective separation membrane, the core upgraded product of waste fermentation membrane series. Made of PVDF and e-PTFE composite nano-molecular screening material with 0.01-0.1μm ultra-microporous structure, it owns precise molecular screening function different from conventional permeable membranes.

Its core technical advantage lies in selective gas separation: it allows small molecules including oxygen, carbon dioxide and water vapor to pass through smoothly, while effectively intercepting macromolecular odor pollutants such as ammonia gas, hydrogen sulfide, volatile organic compounds (VOCs) and malodorous gas molecules generated by domestic waste fermentation. It realizes in-situ condensation reflux of nitrogen-containing odor gas inside the compost pile, retaining nitrogen nutrients and improving organic fertilizer fertility by 15%-25%. Besides, it completely eliminates peripheral odor diffusion of composting workshops, solves public nuisance complaints of waste treatment plants, and satisfies strict environmental protection emission standards. In addition, the molecular membrane has excellent anti-microbial adhesion and anti-corrosion properties, resisting erosion of hydrogen sulfide and organic corrosive gas in waste fermentation process.

4. Comparative Advantages & Integrated Application

The three membrane products form a graded matching system for domestic waste composting projects: the fermentation covering film undertakes basic weather protection, the permeable membrane realizes basic breathable fermentation optimization, and the molecular membrane achieves high-standard odor control and fertilizer efficiency improvement. Users can select single product or combined layered covering scheme according to project scale, local environmental protection requirements and waste raw material types.

All products support customized size, thickness and pore structure, applicable to municipal domestic waste treatment plants, kitchen waste resource utilization bases, rural domestic waste centralized composting stations and organic fertilizer production lines. This membrane-covered static composting technology cancels complex deodorization equipment and high-frequency mechanical turning equipment, reduces project construction investment and daily energy consumption, and builds a low-carbon, efficient and green domestic waste resource disposal mode.

5. Core Product Features Summary

• Weather Durability: UV anti-aging, tear resistance, suitable for long-term outdoor stacked fermentation

• Environmental Compliance: Zero odor leakage for molecular membrane type, up to national and international waste treatment emission standards

• Fermentation Efficiency: Stabilize pile temperature, optimize microbial living environment, shorten compost cycle by 30%

• Economic Benefit: Reduce labor and equipment operation cost, improve finished organic fertilizer quality and added value

• Eco-friendly Property: Recyclable membrane material, no secondary pollution to soil and water body