Core Tip: With the continuous increase in the intensification of pig production, the pressure on environmental pollution is increasing. The public is increasingly concerned about environmental pollution. Pig producers must consider taking certain measures to minimize the environmental pollution caused by pig manure.
Environmental pollution caused by pig production
The problem of environmental pollution caused by the pig-raising industry in China is still severe. Pig-raising continues to increase, wastewater discharges follow up, and environmental capacity is increasingly limited. The mode and process for pig farm wastewater treatment and recycling that are technically and cost-effective are insufficient to address various types of pig farm wastewater treatment.
In the past 20 years, there has been no change in the main pig-raising process in China, and the pig-raising process basically has to face different levels of wastewater discharge. The major sources of pollution from the pig industry are sewage, odors and faeces. Their pollution to the surrounding environment can originate from the pig-raising process, waste discharge, storage or storage processes, as well as waste treatment, transportation and utilization. Pig farm sewage is still the most prominent problem of environmental pollution caused by animal husbandry today. The most concerned pollutant components are still traditional organic matter, nitrogen and phosphorus.
The problem of environmental pollution caused by the pig-raising industry not only occurs in large-scale farms, but also the small-scale and relatively concentrated breeding communities face the same problems. With the expansion of towns, industrial development and water shortages, it is increasingly difficult for pig farms to find a place to stay.
Ways to Solve the Problem of Pollution in Pig Production
Pay attention to the construction of the farm.
The pig farm is a pork production base. The selection of the site is very important. The construction site should meet the requirements of the urban development planning and land use planning and relevant regulations, and must be submitted for approval. The site should be selected in the direction of the downwind or crosswind that dominates the residential area's perennial wind direction, which is below the drinking water source; the terrain is high-drying, conducive to drainage, good ventilation, solid soil, strong water permeability, sunny leeward, low-lying surface, high groundwater level, Drainage difficult places, easy to cause environmental humidity, high ground is not conducive to cold and heatstroke; adequate water, good water quality, drinking water to meet the water quality standards, to be health inspection; should be away from the traffic arteries, help prevent disease, reduce and eliminate The epidemic is contagious, but the pig farm cannot be built in a place with a very congested traffic. Although it is conducive to epidemic prevention, it is not conducive to production. There should be a certain amount of land around the pig farm to grow feed and excrete waste. Pig farms with a certain scale should be considered for layout, generally divided into management areas, living areas, production areas and isolation areas. Management areas and living areas are in the upwind direction, and isolation areas are in the downwind direction. Production areas are centered. Breeding pigs should be in the upwind direction of the production area. Growing pigs should be in the downwind direction, with weaned pigs and pigs in the middle. Construction requirements for pig houses: warm in winter, cool in summer, ventilated, sunny, and dry. The environment of raising pigs involves two aspects. On the one hand, the environment affects the health and production of pigs. On the other hand, the excrement, sewage and other wastes produced by pigs in the process of survival and production can cause environmental pollution, resulting in decreased physical fitness and reduced immunity. Behavioral abnormalities and stress have adverse effects on the level of production and product quality. All pigs are housed in closed pig houses. The practice of flushing the excrement with water does not meet the actual needs of pig production.
Pig farm sewage treatment.
The fundamental way to solve the pollution problem in swine production is pig farm sewage treatment, but the sewage treatment is not only a passive measure to stop the symptoms, but also greatly increases the cost of pig production.
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