Nanomembrane composite fabric and nanofiber composite fabric help intelligent composting and fermentation technology system
Nano film intelligent composting and fermentation technology system can provide corresponding solutions according to the total manure volume of the project county, plan manure treatment center, decentralized arrangement, centralized treatment for shared use, reduce transportation cost and solve the problem of environmental odor.
Chinese name: nano film intelligent composting technology
Features: waterproof, low impact on the surrounding environment, no odor overflow, etc.
Material: nano film composite fabric
Nanomembrane intelligent composting does not require the construction of plants and sheds, but only the hardening of the site, which is compatible with the current mainstream tank and stack composting infrastructure, and the service life of the equipment is up to 8-10 years; environmental protection and odorless. Nano film is a polymer selective permeable film, with waterproof, moisture permeability, sterilization, deodorization and other functions, the impact on the surrounding environment is small, no odor overflow, no need to carry odor collection and treatment equipment; adapt to a wide range.
Nanomembrane composting traditional composting methods are mainly of two kinds.
In anoxic or anaerobic conditions, mainly using anaerobic microorganisms for the composting process. In addition to humus-like organic matter, carbon dioxide and methane, the end products include ammonia, hydrogen sulfide and other organic acids and other reducing substances. The process is simple and does not require aeration, but the reaction rate is slow and the composting cycle is long.
Under artificial control and a certain carbon to nitrogen ratio (C/N), moisture, temperature and ventilation, the process of converting organic matter into stable humus by microorganisms, the finished product after fermentation of this type of compost is odorless and fly-free, but has a faint earthy smell.
Nano-film composting has emerged as a new type of composting method. This method combines the advantages of the above three composting methods and reduces their shortcomings, bringing a new choice of composting fermentation for the majority of users.
Since nano membrane composting uses new membrane material to cover the fermentation, it can be fermented in the open air, and the membrane material has one-way permeability to effectively isolate the odor and external water molecules, but the internal water vapor can pass normally to better ensure the internal fermentation state. The NCS intelligent molecular membrane composting fermentation system of China Shipping Environment can be customized according to the climate of different regions, so that the fermented materials under different climates and humidity can obtain a good fermentation environment under the coverage of membrane materials.
Nanometer membrane composting fermentation only needs air supply system, membrane covering fermentation system and intelligent control system to ferment, so the investment cost is only 30% of other reactor fermentation, which greatly reduces the investment cost, and the operation cost is low, compared with the traditional operation cost, nanometer membrane fermentation in the operation of the fame is reduced by 90%, and completely realize the unattended function, so that you can control the fermentation without leaving home. The situation.
Development and testing of front and back-end auxiliary equipment for nano-film intelligent composting, with optimization focused on establishing a system solution with nano-film as the core process.
The intelligent nano-film composting technology has achieved certain results for market promotion at this stage, and more than 30 demonstration bases have been established in Shandong, Hebei, Jiangsu, Inner Mongolia, Hubei and other places.
The intelligent nano-film composting technology is equipped with an Internet of Things system. The park can download the APP to monitor the humidity, temperature and oxygen content in the intelligent nano-film in real time, and regulate it according to the data.
Reading Tips Livestock breeding pollution is the focus of current social concern. The state encourages the selection of economical and applicable treatment modes according to the resource and environmental characteristics of different regions. For different breeds and different scale of farms, how to choose the applicable livestock and poultry manure treatment model is still a problem faced by many farms. In response to this problem, the reporter interviewed Dr. Ma Ruiqiang, Senior Agronomist of Microbiology of China Agricultural University, Postdoctoral Fellow of the Institute of Agricultural Environment and Sustainable Development of the Chinese Academy of Agricultural Sciences, and General Manager of Zhongnong Chuangda (Beijing) Environmental Protection Technology Co., Ltd. to analyze the advantages and disadvantages of various livestock and poultry manure treatment modes and highlight how the nano-film intelligent composting technology operates.
Reporter: What are the characteristics of livestock and poultry manure such as pigs, cows and chickens, and what are the differences or points to note in the treatment mode of chicken manure among them?
Ma Ruiqiang: Pigs and cows are blister manure, and the characteristics of treatment are that both manure and water need to be treated, and after passing through the wet and dry separator, the solid manure can be made into organic fertilizer. The liquid needs to go through multi-stage oxidation before it can be returned to the field. Chicken manure is mainly fresh manure with 80% water content. Chickens have a short digestive tract, in which 70% of feed proteins cannot be digested, but eventually these proteins decompose into ammonia, which has a strong ammonia smell and makes chicken manure very smelly, but chicken manure does not need to go through the wet and dry separator, and can be made into organic fertilizer by directly adding auxiliary materials to ferment, which can solve the problem of smelly chicken manure and also produce organic fertilizer.
It is because of the short digestive tract of chickens, many nutrients are not absorbed, so chicken manure fertilizer is good, nitrogen, phosphorus, zinc, copper content is significantly higher than cow manure and sheep manure, while the potassium content is comparable, if processed and utilized well is a good organic fertilizer. But now many farmers directly pull to not ripe fermented good raw chicken manure dry chicken manure on the ground, sometimes burn seedlings burn core, soil slabbing happens from time to time, which is very harmful to agricultural production. Therefore, the popularization of manure fermentation organic fertilizer knowledge, the promotion of low-cost processing mode, the development of planting and breeding industry have significant benefits.
Reporter: At present, what are the main ways to treat chicken manure for chicken farms in China? What are the characteristics, advantages and disadvantages of each?
Ma Ruiqiang: The traditional and mainstream composting mode in China mainly includes trough composting, stack composting and reactor composting. Tank and stack composting are open composting, with large processing capacity but serious environmental pollution; reactor composting has good confinement and strong environmental performance, but the processing capacity is limited and the control cost is high. It not only has the advantages of good reactor composting confinement, strong environmental performance and large processing capacity of tank and stack composting, but also is well compatible with the existing infrastructure model of mainstream tank and stack composting.
Reporter: For the resource utilization of chicken manure, what are the new technical applications of the membrane covered aerobic composting technology you mentioned?
Ma Ruiqiang: At present, domestic chicken farms are scattered, small-scale, distributed between villages and communities, chicken farms are small compared to other types of farms, chicken manure odor caused by environmental pressure is currently a headache for chicken farms, nano-membrane intelligent composting technology for the resource utilization of chicken manure should be the most promising and suitable for a model.
Nano film composting is a composting method without turning piles, which can save a lot of labor and energy consumption during operation. After being covered by the film, the aeration at the bottom can provide microorganisms in the pile with enough oxygen needed for fermentation, and as the temperature rises, the large molecules of ammonia, hydrogen sulfide and other odors overflow, and the microporous structure of the nano film can block the outside water from entering, but can put the small molecules of water through. At the same time, the large molecules of ammonia and hydrogen sulfide cannot pass through, and the water vapor dissolved on the surface of the membrane finally returns to the pile and then is used by microorganisms, thus achieving the effect of both removing water and no odor, producing a mature farmyard fertilizer, which can be directly returned to the field, and can also be sold directly to organic fertilizer plants for processing and production of commercial organic fertilizer.
Nanomembrane intelligent composting technology is now market-oriented and has achieved certain results, and more than 30 demonstration bases have been established in Shandong, Hebei, Jiangsu, Inner Mongolia, Hubei and other places. For example, a local farm in Shandong Shouguang uses nano-film composting equipment to produce organic fertilizer with good quality and effect, which is welcomed by local vegetable growers and sold for 600-800 RMB per ton.
To sum up, its technical and technological advantages are as follows.
Less investment. Nanomembrane intelligent composting does not need to build a plant, shed, only need to harden the site, compatible with the current mainstream slot and strip composting already infrastructure, equipment life of up to 8-10 years; environmental protection and odorless. Nano film is a polymer selective permeable film, with waterproof, moisture permeability, sterilization, deodorization and other functions, the impact on the surrounding environment is small, no odor overflow, no need to carry odor collection and treatment equipment; adapt to a wide range. It is suitable for large-scale farms, farming communities or centralized treatment centers in areas with temperatures above -30℃; low running cost. Fermentation of 1 ton of organic fertilizer only requires 2 degrees of electricity, the total cost of 1 ton is less than 20 yuan, and the output can be 1500 tons in a year; save time and labor. Modular design, flexible and movable, installation can be completed within 1 week, only need to turn and throw once when building the pile, no need to turn the pile frequently. And simple operation, remote intelligent control through sensors connected to the Internet of Things equipment, cell phones or computers can be monitored 24 hours; high efficiency of composting. Manure 15-20 days to ferment into organic fertilizer, 7-10 days to convert dairy cattle manure into cattle mattress material.
Reporter: What is the next step to improve and optimize this technology?
Ma Ruiqiang: The technology is currently in a mature stage, in addition to the treatment of chicken manure, livestock and poultry manure such as cattle manure, sheep manure, pig manure, as well as branches, straw, drug residue, urban sludge, tailing vegetables and other organic waste harmless treatment and resource utilization, also has very good results.
In the next step, the focus of the technology research and development is the development and testing of the front and back-end auxiliary equipment for nano-film intelligent composting, and the optimization is focused on establishing a system solution with nano-film as the core process.
With the national emphasis on environmental protection in solid waste treatment process, reducing greenhouse gas and odor emissions will become the top priority in measuring the practicality and promotion of related technologies. The membrane covered aerobic composting technology will be vigorously promoted in the waste treatment industry because its core nano-membrane structure can significantly reduce the emission of CH4, N2O, NH3 and other odor gases in the waste treatment process and achieve environmental protection standards. and application.
According to the National Livestock and Poultry Manure Resourcefulness Utilization Project Work Program (2018-2020), this year is the closing year, the comprehensive utilization rate of livestock and poultry manure in the project counties should reach more than 90%, and the matching rate of manure treatment facilities and equipment in large-scale farms should reach 100%. Nanomembrane intelligent composting model can provide corresponding solutions according to the total manure volume of the project county, plan manure treatment center, decentralized arrangement and centralized treatment for shared utilization, reduce transportation cost and solve the problem of environmental odor.
Nano film composite fabric knowledge.
Nano film composite fabric
Apparel and industrial fabrics
Whether to import
Whole roll packaging
1, nano film composite fabric belongs to the field of nano fiber film technology, especially relates to a nano fiber film composite fabric preparation process.
2, nano-fiber, refers to the diameter of the nanometer scale and the length of a large wire-like material with a certain aspect ratio. Through electrostatic spinning and other technologies, nano-fibers can be spun to non-woven fabrics and other base fabrics to make composite fabrics with different functions. Among them, the nanofiber film with antibacterial properties can be spun by electrostatic spinning to improve the antibacterial properties of the composite fabric.
3, however, the existing technology is generally in the spinning solution to add silver nitrate and other antibacterial substances to improve the antibacterial performance of composite fabrics, which has certain toxic side effects; In addition, although there are also by adding natural antibacterial substances such as Chinese medicine extracts in the spinning solution to improve the antibacterial performance of composite fabrics, but it has a more general antibacterial effect and other problems.
In order to develop waterproof and breathable fabrics with high water resistance and excellent mechanical properties, polyvinyl butyral (PVB) adhesive was introduced into polyurethane-based spinning solution, and polyurethane-based nanofiber composite fabrics were prepared by combining electrostatic spinning technology and hot pressing process.
The structural morphology of TPU nanofiber film and polyurethane (PU)/fluorinated polyurethane (FPU)/PVB nanofiber film and their properties after hot pressing with the base fabric (polyester fabric) were investigated. The results showed that when the mass fraction of TPU was 22% and the mass fraction of polyurethane-based spunlace was 14.5%, the dot structure formed not only could effectively bond the fiber film and the base fabric, but also ensured the air permeability of the laminated fabric;
The polyurethane-based nanofiber composite fabric has a breaking strength of 89.6 MPa, a water pressure resistance of 51.6 kPa, a moisture permeability of 7.6 kg/(m^(2)-d), and a breathability of 14.6 mm/s.
TPU/PTFE nano-fiber membrane composite fabric has good windproof, waterproof, moisture permeability, antibacterial performance and other functions.
The excellent waterproof and moisture permeable antibacterial performance of nano film composite fabric can meet its diversified applications in outdoor sportswear, chemical protective clothing, compost fermentation and other fields.
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