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    Home > Active Ingredient News > Feed Industry News > On the development of feed resources and environmental protection

    On the development of feed resources and environmental protection

    • Last Update: 2001-09-29
    • Source: Internet
    • Author: User
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    Introduction: on the development of feed resources and environmental protection 8rz Rao Sihong 8rz (Huazhong Agricultural University, Wuhan 430070, Hubei) 8rz Abstract: This paper discusses the relationship between the development and utilization of feed resources and environmental protection The development of feed resources is an important measure for pollution control and environmental protection Only by paying attention to environmental protection in the process of developing feed resources can we obtain economic, social and ecological benefits 8rz key words: feed resources; development and utilization; environmental protection 8rz1 The necessity and urgency of the development and utilization of feed resources 8rz According to the requirements of the Tenth Five Year Plan for national economic and social development, by 2005, the proportion of the output value of animal husbandry in the agricultural output value was 33% (now 28%) To achieve this goal, China's compound feed needs to grow by 30 million tons, which needs to increase the supply of a large number of feed materials The problem of raw material supply can be solved by expanding the planting area of feed crops, but it mainly depends on the development of feed resources Therefore, it is necessary and urgent to accelerate the development of feed resources for the development of animal husbandry and feed industry 8rz environmental protection is one of the main tasks put forward in the outline of the tenth five year plan In addition to papermaking and chemical industry, the main pollution sources of environmental pollution in China are waste (dregs and waste liquid) and leftovers from brewing and food industry as well as excrement from farms 8rz 1.1 environmental pollution of brewing and food industry8rz with the development of brewing and food industry, a large number of various kinds of dregs and waste liquid are produced every year Especially in China's brewing and food industry, we only focus on the production of a single main product, with low comprehensive utilization rate and large amount of waste discharged For example: monosodium glutamate is only used in the production of monosodium glutamate from corn and other raw materials; starch is only used in the production of corn, and the proportion of unused waste is very large, generally accounting for 30% - 50% of the raw materials, or even higher See Table 1 and table 2 for residue, waste liquid and exploitable feed quantity of several industries (brewing, food, etc.) in China 8rz Table 1 several kinds of industrial dregs (wet) and their feed production (dry) 8rz industrial category 8rz annual output 8rz dregs (wet) 8rz converted into feed dry matter 8rz remarks 8rz 8rz, 8rz, 8rz, 8rz, 8rz starch industry 8rz, 2008rz, 3808rz, 768rz wet residue, 8rz liquor industry 8rz with 80% water content 600 8rz 1584 8rz 600 8rz wet slag with water content 64% 8rz beer 8rz 2400 8rz 432 8rz 86 8rz wet slag with water content 80% 8rz 8rz 310 8rz 207 8rz 51.8 8rz Fruit processing industry 8rz 1340 8rz 536 8rz 107.28 RZ wet slag with water content of 80% 8rz total 8rz 8rz 7339 8rz Table 2 discharge amount of several industrial waste liquid and its producible feed product 8rz waste liquid (water) type 8rz main component content 8rz output / 10000 tons 8rz It can produce 8rz solid of 8rz / 10000 tons of 8rz sulphurous acid pulp waste liquid, in which sugar 20% 8rz 300 8rz 1.5-2.08rz starch waste liquid 8rz solid 1.7%, mainly protein and sugar 8rz 13500 8rz 90-120 8rz alcohol waste liquid (mash water) 8rz solid 15%, total sugar 2.1%, total nitrogen 0.23% 8rz 1500 8rz 18-258rz citric acid waste liquid 8rz Solid 4%, total sugar 1% 8rz 200 8rz 6.08rz monosodium glutamate waste liquor 8rz total sugar 1% ~ 2%, total nitrogen 0.50% 8rz 200 8rz 3.08rz total 8rz 8rz 15700 8rz 120-1608rz from table 1, 2, it can be seen that six industries, such as starch, brewing and fruit processing, need to produce more than 70 million tons of slag every year; five industries discharge more than 150 million tons of waste liquid (generally 15-25 tons of waste liquid are produced in the production of one ton of products) Such a large number of waste residue and waste liquid will cause serious environmental pollution if not developed and utilized 8rz 1.2 the pollution of animal husbandry to the environment 8rz the pollution of animal husbandry to the environment includes: ① the pollution of excrement produced by animal husbandry, with the improvement of intensive and large-scale animal husbandry, the pollution of environment is increasing; ② the pollution of waste and sewage from slaughterhouse For example, 100000 chicken farms produce 10 tons of excrement every day, and the total number of chickens raised in intensive chicken farms (specialized households) nationwide is about 2.3 billion, with an annual output of 8400 × 104 tons of excrement; 1000 pig farms discharge 6 tons of excrement every day, with an annual output of 2500 tons, with a daily consumption of 30 tons of washed excrement and 10000 tons of sewage every year It is estimated that the BOD (biochemical oxygen demand) in the feces of adult pigs is 13 times higher than that of human feces 8rz2 feed resources development and utilization combined with environment 8rz from the above, in order to adapt to the development requirements of animal husbandry and feed industry in China, one of the main ways is to develop and utilize rich feed resources; in order to purify the environment, it is necessary to eliminate the pollution sources that cause serious environmental pollution - feed resources (residue, waste liquid, leftovers, etc.) In a sense, the development and utilization of feed resources is one of the important measures to control the environment, or the first level pollution control measures If the two are well combined, the economic, social and environmental benefits can be obtained 8rz 2.1 the development and utilization of feed resources must be combined with pollution control and environmental protection 8rz is the food, light industry and livestock and poultry breeding industry in western developed countries At the same time, comprehensive utilization and pollution control and environmental protection facilities should be built together In the past, China only paid attention to the production of main products in the construction of food, light industry and breeding industry, but not enough attention to the utilization of by-products and environmental protection, or even did not take any measures to control and utilize by-products, which led to serious environmental pollution (water, soil, air, etc.) in China, and pollution control and environmental protection has become an urgent problem to be solved According to the experience at home and abroad, only by combining resource development and utilization with pollution control and environmental protection, taking necessary supporting policies and advanced science and technology, and achieving pollution control and environmental protection, feed development and comprehensive utilization, can we accelerate the process of resource development and pollution control, so as to achieve economic, social and ecological environmental benefits Practice has proved that only by actively developing feed resources, can we achieve the most economic pollution control; only by paying attention to pollution control and environmental protection, can we accelerate the development of feed resources development and comprehensive utilization, turn waste into treasure, and obtain comprehensive benefits The development of 8rz 2.2 feed resources must be combined with comprehensive utilization The development of 8rz waste resources must implement the principle of "making the best use of everything, comprehensive utilization", so as to achieve the maximum economic and environmental benefits It has been proved that only by comprehensive utilization of wastes can the economic benefits with the highest value be obtained For example, Tianjin meat joint processing plant divides the pig waste into three levels of comprehensive utilization, i.e medical, edible and development feed, which makes the plant obtain good economic and environmental benefits Another example is a starch factory with an annual output of million tons, which discharges 200000 tons of waste liquid every year (20 tons of yellow pulp water will be produced for each ton of starch production) According to the single cell protein yield of 1.5% and 80%, 2400 tons of single cell protein feed can be produced in one year, with a sales price of 3000 yuan / ton, an output value of 7.2 million yuan, and a reduction of COD and BOD of more than 90%, greatly reducing pollution Another example is the development of Tung seed meal feed After three steps of detoxification, high quality tung oil (for industrial use), Tung seed meal (for feed) and pesticide and Rodenticide (for medicine) can be obtained The development of 8rz 3 feed resources must increase the awareness of environmental protection to ensure feed safety The development and utilization of 8rz 3 feed resources should be based on the effective, safe, environmental protection and sustainable development 8rz in 1996, BSE was first found in England, which caused shock and panic all over the world BSE was caused by feeding substandard meat and bone meal In March 1999, some chicken farms in Belgium suddenly became abnormal Because the feed was polluted by dioxin (a byproduct in the industrial production process), it was found that dioxin in the chicken fat and eggs was 80-1000 times more than the normal in the Premier League, which paralyzed the animal husbandry and the food processing industry of animal products in Belgium All countries in the world announced to stop selling their products, resulting in the collective resignation of the government In August 1999, four large-scale meat food producers in France exposed the use of sludge from septic tanks of sewage treatment plants for breeding The European Union was shocked and saw a resurgence of BSE All kinds of events above 8rz indicate that they are all caused by feed and are related to the safety and environmental awareness of feed resource development and utilization Ignoring the safety of feed and feed additives will bring serious disastrous consequences to human beings Poisons and drugs remain in animals and people eat them, which will directly harm people's health; they are discharged into air (odor), water (waste water) and soil (waste water, waste, etc.) and pollute the environment, which will also harm human health 8rz in order to develop feed resources effectively, safely, environmentally and sustainably, the following measures should be taken: 8rz (1) According to the requirements of the Tenth Five Year Plan for the development of environmental protection, animal husbandry and feed industry, each resource industry, in consultation with the environmental protection department, will work out specific plans and implementation measures to strive for the double harvest of feed resource development and utilization and environmental protection during the Tenth Five Year Plan 8rz (2) to develop and utilize feed resources, all new technologies and measures should be taken to reduce or eliminate pollution sources, and no new pollution can be produced Adopt new process and new technology for comprehensive utilization
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