Utilization of Livestock and Poultry Manure Resources and Prevention and Control Technologies for Livestock and Poultry Breeding Pollution

In recent years, with the continuous development of the social economy, animal husbandry has become one of the important agricultural industries. At the same time, with the gradual expansion of livestock and poultry breeding scale, the treatment and utilization of livestock and poultry manure has become increasingly prominent, and has become an important factor affecting sustainable agricultural development and ecological environment security. In the past, traditional methods of treating manure often had problems such as high costs and serious environmental pollution. It is urgent to carry out research on the resource utilization of livestock and poultry manure and the prevention and control of livestock and poultry breeding pollution.
1、 The hazards of livestock and poultry manure pollution
1. Livestock and poultry manure can have a direct impact on soil quality. Animal manure contains a large amount of harmful substances such as heavy metals and pathogens. If these substances are discharged into the soil, they can cause soil degradation, reduce the soil's water retention capacity and nutrient supply capacity, and thus affect the normal growth and yield of crops.
2. Livestock and poultry manure contains a large amount of nutrients such as nitrogen and phosphorus. Direct discharge into water bodies without proper treatment can cause eutrophication, leading to excessive reproduction of aquatic plants, blocking water flow, and weakening the stability of aquatic ecosystems.
Organic matter in livestock and poultry manure can decompose under anaerobic conditions, producing large amounts of gases such as ammonia and methane. Not only will it pollute the surrounding air quality, but it will also have an impact on the health of humans and animals. For example, ammonia can irritate the eyes, respiratory tract, and skin of humans. Long term exposure to these harmful gases can easily cause respiratory and skin diseases, and may worsen chronic respiratory diseases.
4. Untreated livestock and poultry manure may also become a carrier for disease transmission. This includes various pathogens such as bacteria, parasites, and viruses, such as Salmonella and avian influenza virus. These pathogens may spread to humans and other animals through contact with infectious sources, food chains, or water sources, causing disease outbreaks and transmission.
2、 Technical measures for resource utilization of livestock and poultry manure
（1） Matrix cultivation technology refers to a technique of using livestock and poultry manure as Organic Fertilizer to grow crops or cultivate fungi and other organisms. After treating livestock and poultry manure, it is transformed into substrate materials suitable for plant or microbial growth through mixing, composting, or fermentation, achieving effective utilization of organic matter and nutrients in livestock and poultry manure. Livestock and poultry manure contains abundant organic matter and nutrients. As a cultivation substrate, it can provide the necessary nutrients for plants, promote plant growth and development, and increase yield and quality. There are a large number of beneficial microorganisms in livestock and poultry manure. By using it as a cultivation substrate, it can provide nutrients and suitable environmental conditions for the cultivation of microorganisms, which can be used for the research and production of biological agents or biological fertilizers.
Therefore, the cultivation substrate technology in the resource utilization of livestock and poultry manure is an effective way of livestock and poultry manure treatment and resource utilization. It can fully utilize the organic matter and nutrients in livestock and poultry manure, promote plant growth and microbial cultivation, and has positive significance for agricultural production and environmental protection. （2） The anaerobic treatment technology for livestock and poultry manure is an important way of environmental governance and sustainable development for resource utilization. And anaerobic treatment technology for manure is one of the commonly used methods. This technology refers to a treatment method that utilizes anaerobic microbial communities to decompose and transform manure in an anaerobic environment, breaking down organic matter in livestock and poultry manure into useful substances such as biogas and organic fertilizers.
In anaerobic processes, microbial communities undergo complex changes, including hydrolysis, fermentation, methane production, and other steps. Among them, hydrolysis is a key step in anaerobic treatment, which reduces the molecular weight of organic matter and makes it easy for microorganisms to decompose. Fermentation is the process of converting decomposed organic matter into methane and carbon dioxide. Finally, by collecting the generated biogas and sludge, resource reuse can be achieved.
This technology requires reasonable control of parameters such as temperature, pH value, and organic load during application to ensure treatment effectiveness and safe operation. Through anaerobic treatment technology for livestock and poultry manure, it can be converted into valuable resources. During anaerobic treatment, organic matter is decomposed into biogas, which can replace traditional energy sources for power generation, heating, etc., achieving energy reuse and reducing energy consumption and greenhouse gas emissions. The generated sludge can be used as organic fertilizer to provide nutrients for crops and promote sustainable agricultural development. In addition, anaerobic treatment does not require a large amount of water, which can save water resources and reduce environmental pressure. （3） The padding fermentation bed breeding technology uses microorganisms to ferment and decompose animal feces, achieving the goal of purifying the breeding environment and improving breeding efficiency. This technology mainly consists of padding, fermentation bed microorganisms, and farmed animals. Pad material refers to a layer of organic matter used to lay fermentation beds, such as sawdust, straw powder, rice bran, etc. Fermentation bed microorganisms are the microbial communities that grow on the fermentation bed, including bacteria, fungi, etc. They decompose organic matter in the bedding material, producing energy and high-quality organic fertilizer.
This technology can improve the environment of livestock and poultry breeding, increase breeding efficiency, generate high-quality organic fertilizer, effectively solve the environmental pollution problems caused by livestock and poultry breeding, and achieve zero emissions, pollution, and odor in breeding. In the cultivation technology of cushion fermentation bed, it is necessary to regularly add cushion and fermentation bed microorganisms, control the moisture and ventilation of the fermentation bed, and clean and replace the cushion in a timely manner. In addition, attention should be paid to the diet and hygiene management of livestock and poultry to ensure the effective operation of fermentation bed breeding technology. （4） Aerobic composting technology is an environmentally friendly, efficient, and sustainable Organic Waste treatment method that can effectively degrade organic matter, kill pathogens and insect eggs, reduce odor emissions, and improve soil fertility. The principle of this technology refers to a technique that uses microorganisms to decompose and transform organic waste under aerobic conditions.
During aerobic composting, organic waste reacts chemically with oxygen to produce carbon dioxide, water, and energy. Microorganisms convert decomposed organic matter into fertilizer, thereby achieving the goals of treating organic waste, protecting the environment, and improving soil fertility.
This technology can effectively remove harmful substances such as heavy metals and pathogens from organic waste. During the composting process, the odor generated can be treated to meet emission standards and reduce environmental pollution. And aerobic composting technology has a fast processing speed, usually only taking 7-14 days to complete.
In addition, aerobic composting technology can effectively kill pathogens and insect eggs, reducing the risk of disease transmission. Organic waste can be converted into high-quality fertilizers, promoting soil nutrient cycling and achieving sustainable resource utilization.
3、 Prevention and control technology for livestock and poultry manure
（1） Strengthening the education of green livestock and poultry breeding technology and the prevention and control of livestock and poultry manure is one of the important measures to ensure the sustainable development of livestock and poultry breeding and environmental protection. Strengthening the promotion of green livestock and poultry breeding technology can enhance the awareness and technical level of farmers, and promote the green development of livestock and poultry breeding industry. Strengthen the publicity of relevant policies and regulations on the prevention and control of livestock and poultry manure, so that farmers understand the relevant breeding requirements and standards, and guide them to actively take corresponding prevention and control measures.
Reasonably select typical livestock and poultry breeding bases to establish demonstration projects for livestock and poultry manure treatment. Through actual effect demonstrations, attract more livestock and poultry farmers to visit and learn, and enhance their interest and confidence in green breeding technology. Increase financial support for green livestock and poultry breeding technologies, and encourage farmers to actively adopt green breeding technologies and equipment. At the same time, increase policy incentives and provide rewards and preferential policies to farmers who adopt green breeding technologies. （2） 1. Water control technology refers to the rational management and utilization of water resources to reduce wastewater generated during livestock and poultry breeding, and effectively control the discharge and pollution of wastewater. The core idea of water control technology is to reduce the amount of wastewater generated from the source by adjusting the amount of drinking water for livestock and poultry, changing the feeding methods, and other means. For example, improving drinking water facilities and adopting water-saving water dispensers to increase the utilization rate of drinking water; Implement measures such as timed drinking water and limiting drinking water intake to reduce wastewater generation. In addition, sterilization and disinfection techniques can be used to ensure the hygiene and safety of drinking water facilities.
In the daily process of livestock and poultry breeding, farmers can use recycled water utilization technology to treat the breeding wastewater and rainwater collected by the rainwater collection system for reuse. After sedimentation, filtration and other treatments, such as using biofilters, sedimentation tanks and other technical facilities to remove suspended solids and organic matter, the treated water can be returned to the breeding system for cleaning, flushing and other purposes during the breeding process, reducing the demand for groundwater and tap water.
3. Water quality monitoring technology refers to the regular monitoring of water quality indicators in aquaculture farms through the installation of sensors and monitoring equipment, including dissolved oxygen, ammonia nitrogen, total phosphorus, etc. in the water, and timely adjustment of feed feeding, water aeration, and increasing water change frequency to maintain the stability and cleanliness of the water.
4. Plant remediation technology involves planting plants with the ability to absorb and decompose pollutants, such as reeds and calamus, to divert aquaculture wastewater to the plant remediation area. Through the physiological metabolism of plants, organic matter and nutrients in the wastewater are absorbed and decomposed, reducing the pollution of wastewater to the environment.