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Qingdao Jiguang Environmental & Energy Technology Co., Ltd. (hereinafter referred to as Jiguang Technology) was established on January 30, 2019 and is located in Laoshan District, Qingdao. Since its establishment, the company has been committed to the research and development, technical optimization and promotion of China's "membrane-covered fermentation technology". It has successively reached cooperation with nearly a hundred enterprises and institutions such as New Hope Liuhe, Yili, Changchun Agricultural Machinery Research Institute, Agricultural Expo Park and Nanjing Tech University, and is responsible for the implementation of projects. During this period, a total of more than 1,200 sets of equipment have been promoted, installed and debugged, and projects in Malaysia and the Philippines have also been implemented. Through nearly 6 years of technical promotion and application, the "membrane-covered fermentation technology" has become a widely accepted aerobic fermentation technology in China. With its technical characteristics of low investment, simple operation, low energy consumption and "0" maintenance, it has been widely used in China and is being promoted as a key agricultural technology in various places.
Scope of application: Livestock and poultry manure (chicken manure, pig manure, cow manure, duck manure), sludge, domestic waste, straw waste, etc.
e-PTFE composting membrane ·· Intelligent control system ·· Micro-pressure air supply system ·· Monitoring system
The core equipment of the membrane-covered system is the GT-composite membrane (covering membrane) that is placed on the livestock manure pile. The film is assembled from an e-PTEF film mating substrate which is sandwiched between two layers of a strong polyurethane substrate film. The e-PTEF film is uniformly distributed with pores of 0.2 μm pore size, and the polyurethane film has the characteristics of ultraviolet protection and corrosion resistance. The high-temperature aerobic fermentation pre-fermentation reactor is sealed with the membrane-sealed livestock and poultry manure to shield the wind and rain from the adverse weather, and at the same time, the carbon dioxide gas and water vapor entangled in the treatment process can be quickly discharged. The water permeability of the membrane affects the change of moisture during the treatment process, which requires the material to be too wet and retain sufficient moisture for the degradation of the material. The e-PTEF membrane has a certain insulation and pressurization effect, which can help the system maintain the temperature, so that the oxygen concentration and temperature in the stack are evenly distributed, which is beneficial to the temperature condition of the entire heap to kill the pathogen. The 0.2 μm pore size micropores on the e-PTEF membrane are effective physical barriers to dust, aerosols and microorganisms, preventing them from spreading out. During the pre-fermentation process, a film of condensed water is formed on the inner surface of the membrane; most of the odorous substances in the exhaust gas, such as ammonia, hydrogen sulfide, volatile organic compounds (VOC), etc., are dissolved in the water film. Then, it will fall back to the pile with water droplets, where it will continue to be decomposed by microorganisms. The cover film can reduce the odor concentration in the fermentation process by 90%-97%, and reduce the microorganisms in the exhaust gas by more than 99%. Protect the health of field workers and the surrounding residents.
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Contact number: 18866229302 (WeChat) Zhao
Email: gegood@hotmail.com
1. Product Overview
The semi-permeable e-PTFE membrane composting system is a specialized closed aerobic fermentation solution designed for municipal domestic organic waste, including household kitchen waste, catering waste, garden green waste and sorted urban organic residues. Different from traditional open composting and fully enclosed workshop composting, this system uses high-performance microporous e-PTFE membrane as the core barrier layer to build a controllable, odor-free, all-weather composting environment. It effectively solves the common problems of domestic waste treatment such as complex waste components, high moisture content, severe odor emission, unstable fermentation and strict urban environmental protection requirements. With intelligent micro-pressure aeration and automatic environmental control, the system realizes harmless treatment, reduction and resource recycling of domestic organic waste, which is widely applied in urban domestic waste disposal centers, community decentralized treatment stations and municipal environmental protection projects.
2. Working Principle for Domestic Waste Treatment
Domestic organic waste features high water content, easy decay, strong odor and variable impurities, which puts forward higher requirements for ventilation, deodorization and moisture control. The e-PTFE membrane material has a precise micropore structure of 0.2–0.5 μm, achieving selective molecular permeability targeted for domestic waste composting. Air and water vapor molecules can freely pass through the membrane to ensure continuous oxygen supply for aerobic microbes and discharge of fermentation water vapor. In contrast, odor molecules, ammonia, VOCs, dust particles and pathogenic bacteria generated by decomposing domestic waste are completely intercepted inside the composting space. Cooperated with micro-positive pressure aeration, the system maintains a stable internal fermentation atmosphere, avoids anaerobic odor accumulation caused by uneven decomposition of domestic waste, and prevents rainwater penetration and secondary pollution in outdoor operating conditions.
3. Complete System Composition
3.1 Functional Semi-permeable e-PTFE Membrane Cover
Adopting multi-layer composite anti-aging structure, the membrane is waterproof, windproof, UV-resistant and flame-retardant. It provides stable gas exchange and efficient odor interception, adapting to long-term outdoor operation of urban domestic waste projects. The membrane effectively suppresses odor diffusion to residential areas and solves the public nuisance problem of urban composting sites.
3.2 Micro-pressure Uniform Aeration System
Consisting of low-noise fans and uniform air distribution pipelines, the system supplies gentle and stable oxygen to the domestic waste pile. It solves the problem of local anaerobic corruption caused by high humidity and dense stacking of kitchen waste, ensures overall aerobic fermentation, and greatly reduces odor generation at the source.
3.3 Intelligent Temperature and Humidity Control System
Equipped with real-time temperature, oxygen and humidity sensors, the system automatically adjusts aeration volume and frequency according to the fermentation state of domestic waste. It stably maintains the high-temperature fermentation range of 55–70 °C, thoroughly kills bacteria, parasite eggs and weed seeds in domestic waste, and meets municipal harmless treatment standards.
3.4 Sealing and Fixed Support System
The professional frame tensioning and fully enclosed sealing structure ensures no odor leakage at the edge of the membrane cover. It adapts to modular pile layout of urban domestic waste plants and supports large-scale continuous feeding and batch fermentation operation.
4. Core Advantages for Domestic Waste
Zero Odor Community-friendly Operation: The e-PTFE membrane intercepts over 95% of odor and VOCs generated by rotting domestic waste, enabling composting projects to be built near urban communities without public complaints.
Strong Adaptability to Complex Domestic Waste: It stably treats high-moisture kitchen waste, mixed organic domestic waste and seasonal green waste, resisting material fluctuation and ensuring consistent fermentation quality.
All-weather Urban Operation: Completely isolated from external rain and snow, avoiding material dilution and failure of domestic waste composting in rainy seasons, realizing year-round stable municipal waste disposal.
Low Investment & Low Operation Cost: No need for expensive fully enclosed workshops and complex tail gas deodorization equipment. It features low power consumption, simple management and low maintenance cost, which is very suitable for municipal batch waste treatment.
Standardized Harmless & Resource Effect: High-temperature thorough fermentation realizes domestic waste reduction, harmlessness and recycling, producing qualified organic soil conditioner and organic fertilizer for urban greening.
5. Application Scope
Specially applicable to the aerobic fermentation treatment of all types of urban domestic organic waste:
Urban household kitchen waste and catering kitchen waste
Urban garden green waste, fallen leaves and branch residues
Organic screenings from municipal solid waste sorting
Community decentralized domestic organic waste
Urban public greening and scenic area organic waste
6. Main Technical Parameters
Membrane micropore size: 0.2–0.5 μm
Odor interception efficiency: ≥95%
Waterproof grade: Fully waterproof, anti-rainwater infiltration
Air permeability: High and stable gas exchange capacity
Effective high-temperature fermentation period: 55–70 °C
Fermentation cycle for domestic waste: 25–30 days
Membrane service life: 8–10 years for outdoor municipal use
Harmless treatment rate of domestic waste: 100%
7. Application Value
This e-PTFE membrane composting system provides a perfect low-carbon and environmentally friendly solution for the classification, reduction and resource utilization of urban domestic waste. It solves the bottleneck of difficult odor control and restricted site selection in traditional domestic waste composting projects, and meets the high-standard environmental protection requirements of modern urban sanitation. With modular installation, intelligent operation and low overall cost, it has become the mainstream preferred technology for municipal domestic organic waste treatment and urban ecological cycle construction.
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