1 Domestic and foreign livestock and poultry environmental protection treatment status 1.1 Foreign Profile 1.1.1 Some small-scale pig farms adopt various water-saving measures, such as the Taiwan-Hong Kong wood-pig farms law in Japan--the daily excretion of pig urine is continuously spread on the floor of the house and mixed with certain The woody layer of microorganisms absorbs and digests. From time to time, the fertilizer is loaded outside the car and replaced with new wood chips. Some of the manure is separated by solids and liquids, and the dung is piled up as fertilizer. Wastewater is treated by anaerobic digestion (ie biogas digesters) and discharged to farmland and fish ponds. Recently, Japan began to adopt membrane separation technology for processing. 1.1.2 Medium-sized farms Medium-sized farms in Western Europe, represented by France and Germany, are all supported by the planting industry. After the pig manure is treated with a biogas plant with a high degree of automation, it is stored in several 500-1000 m3 steel tanks. When required, it is transported to the farmland with manure vehicles for fertilizer; the biogas output is used as the power and heat source of the farm. , thereby becoming a virtuous circle of ecological farms with multiple levels of biomass utilization. 1.1.3 Large-scale pig farms Some large-scale pig farms in the United States are built on the slopes of semi-desert regions. In normal times, the pig manure water flows downhill, and the farm is moved to it after 7-8 years. This will not only reduce the large amount of waste treatment costs, but also improved the soil, increased fertility, but also laid the foundation for the future cultivation of crops. Pig farms in developed countries attach great importance to environmental protection. Large-scale pig farms generally use solid-liquid separation, anaerobic digestion (ie, biogas fermentation) and sedimentation process units. Due to the development of science and technology, each unit has its own innovation. For example, large-scale biogas plants used to be large-scale steel-concrete structures in the past, followed by URSB (upflow anaerobic sludge blanket reactor) steel-rectangular pools. In recent times, UASB-type pools of three-phase separators made of special adhesive tapes have not been capped. In the aerobic process, a variety of simple and practical shallow shot aeration devices have been developed on traditional air aeration devices. In order to simplify the process and improve the removal rate of suspended solids, in a sewage treatment process in a large farm in Australia, a large-scale flotation device with high efficiency flocculation was added immediately after the sedimentation of the fecal water, so that the BOD of the effluent was reduced to 1800 mg/L. (The estimated COD is 3000 mg/L), which is then discharged to pasture for irrigation. 1.2 Domestic Profile More than 90% of large-scale pig farms in China have no excrement disposal facilities, even simple solid-liquid separators. In pig farms that use engineering facilities to treat manure, in order to achieve better economic returns, the majority of energy and integrated use are the main objectives, namely the construction of corresponding biogas projects. Biogas is used for centralized gas supply (a few generations) of biogas slurry and biogas residue as a fertilizer for farmland, vegetable fields, fruit trees and economic crops, and feed additives for cattle and fish. Only a few of them have the main purpose of protecting the environment. Its technological process is roughly the same as foreign technology, ie, anaerobic digestion of solid-liquid separation and aerobic treatment of an aquatic plant pond. Some projects aim to reduce the energy consumption and reduce operating costs, so that the anaerobic digester water can be directly discharged into plant ponds (slopes and channels) for disposal. 1.3 Summary at home and abroad 1) There are basically two methods for the treatment of manure in large and medium-sized pig farms at home and abroad: one is comprehensive utilization, and the other is that the sewage meets the emission standards. Units with farms, villages, and vast lands for crop farming and aquaculture use "comprehensive utilization" as a feasible method. They are also a good way to use multi-level biomass energy, build ecological agriculture, and ensure the sustainable development of agriculture. Conversely, only "Sewage discharge standards" method can ensure the stable and long-term survival and development of the pig industry. 2) For pig farm waste, this high-concentration organic wastewater must be anaerobic digestion (biogas fermentation) because only anaerobic digestion can remove a large amount of soluble organic matter (up to 85% to 90 %), and it kills the infectious agents and is good for disease prevention. This is irreplaceable for solid-liquid separation, precipitation and air floatation processes. If aerobic technology is used, it will consume nearly 10 times of electric energy. Although one-time investment can save 20%, long-term operation cost will be a heavy burden. 2 Background and characteristics of livestock and poultry wastewater treatment equipment 2.1 Features 2.1.1 rapid 24-hour aerobic rapid fermentation, the day of manure produced on the same day harmless treatment; 2.1.2 Recycling 100% of the resource of manure and sewage into high-efficiency organic fertilizer recycling, zero emissions, in line with the requirements of the circular economy. 2.1.3 Detoxification Under the action of high-temperature microorganisms, it will be fermented at a high temperature of 50-60°C for more than 4 h, and it will be free from harmful bacteria, pathogens and parasites and no offensive odor. 2.1.4 Scaling In the high temperature of photosynthetic bacteria and equipment exhaust, the sewage can be concentrated by about 30%. 2.1.5 Factory production of industrial equipment, strong sense of the times, once installed in place. Compared with the traditional process, the space is saved by 50% to 70%. The operation is simple and the maintenance is convenient. The microorganisms are usually added at one time and no longer need to be supplemented in the long term. 2.2 Process Flow and Technical Features 2.2.1 Working Principles The manure wastewater treatment equipment uses fecal sewage from livestock and poultry farms. (Biochemical indicators of fecal sewage should reach CODcr: 35000 to 50000 mg/L, BOD5> 25000 mg/L, and solids TS content: 3.5% to 6.0%. , Nitrogen content> 4.5 kg/m3)) After simple separation of impurities, use self-cultivated GE fungi containing photosynthetic bacteria PTB, thermophilic digestion bacteria, so that the sewage in the aerobic environment for rapid high-temperature fermentation, 12 Within 24 hours, a high temperature of about 50 to 60°C (depending on the local temperature) is used to deodorize and kill harmful microorganisms and parasites to produce highly efficient organic liquid fertilizers. 2.2.2 Equipment Technology Process System structure: The system's standard model KS2000 (20 t per day) contains 4 high temperature submersible jet aerators, 5 defoaming machines, stainless steel plate in the inner chamber, 3 mm thick steel plate in the middle, outsourcing thermal color steel plate To ensure that the service life is more than 15 years. System series: Now the system has successfully developed a series of products suitable for different farms with a population of 2 000 to 10 000 pigs. The daily processing capacity ranges from 10 t to 100 t to suit the needs of pig farms of different sizes. 2.3 After processing, produce organic liquid fertilizer This system will enter livestock and poultry urine once into the equipment, high-temperature microorganisms in the oxygen-enriched environment will be fermented (55 ~ 60 °C) into a highly efficient bio-organic concentrated liquid fertilizer, fermentation process can kill E. coli, circovirus Other harmful pathogens and weed seeds, etc., and remove malodors. Liquid fertilizer is rich in N, P, K and organic components, has the advantages of full nutrition, good absorption, wide application range, etc. It is a kind of natural organic liquid organic fertilizer. The liquid fertilizer can be combined with drip irrigation, sprinkler irrigation and irrigation instead of using fertilizer. Can be widely used in crops, vegetables and trees, flowers production. The product is characterized by high yield, harmless, organic and high quality. In addition, when it is fully combined with the soil, it will significantly increase the amount of beneficial microorganisms in the soil, loosen the soil, increase the content of organic matter in the soil, and improve the soil environment; and can increase the sugar content of fruits (approximately 20% increase); increase crops Yield; Prevention of crop diseases. Through the use of the equipment, these livestock farms can reduce fecal pollutant emissions, which is conducive to the healthy development of aquaculture companies. As a result, the environment has been significantly improved, which has a significant effect on the protection of local water sources and improvement of the agricultural production environment and living environment. Substituting organic fertilizer for a portion of chemical fertilizers will help improve the soil, maintain ecological balance, promote the environmental management of large-scale pig farms, and realize resource recycling, harmlessness, and efficiency of environmental management. It can be seen that the promotion of the technology not only has certain economic benefits, but also injects new vitality into the development of the company and the local economy, as well as significant environmental and social benefits. Others Breathing Circuits,Circuit Build An Artificial Airway,Anaesthesia Breathing Circuit,Anaesthesia Machine Circuit Hangzhou Trifanz Medical Device Co., Ltd , https://www.cfzmed.com