Dung cleaning In large-scale pig farms, excreta disposal is a very arduous task, accounting for more than 50% of the total workload in the farm. Cleaning manure is the use of certain tools and methods to remove the manure from the pig house to the outside. According to the different tools and methods used, it can be divided into artificial manure removal, mechanical manure removal, and water flushing manure removal methods. (a) Artificial manure removal Artificial decontamination is mainly carried out by manual cleaning, transported to the outside by hand cart. The advantage of this method is simple, no mechanical equipment, no electricity, less water, low investment; disadvantage is the large amount of labor, low efficiency. This approach is used mostly in small-scale pig farms and in large-scale pig farms for gestation and finishing pigs. (b) Mechanical cleaning Mechanical excrement is the use of machinery to clear the excrement to the outside, often used machinery and equipment include shovel-type cleaning machine, scraper-type cleaning equipment and conveyor belt cleaning machine. The advantage is that it can replace the manpower, reduce labor intensity and improve labor productivity; the disadvantage is high investment, large power consumption, excrement and urine corrosive metal, poor durability of the device, the average life of 2 to 3 years. China's large-scale pig farms are used less frequently. (c) Water flushing excrement Water flushing and excrement is the use of water to flush the excrement out of the house and discharge it to the sedimentation tank or septic tank through the excrement ditch. Common ways are sprinkler head flushing excrement, sluice gate flushing excrement and self-flowing water flushing excrement several ways. Its advantages are simple equipment, high efficiency, fewer failures, is conducive to health on the site, easy to control the epidemic infection; the disadvantage is large investment in infrastructure, large fecal disposal projects, water consumption. In the production and conservation nets of large-scale pig farms, fecal water is used to flush the excrement when the bed and the nursery net are used; the sows used the limit bar to feed the feces to flush the excrement; the finishing pigs are used The slatted floor is also flushed with water. Excreta treatment The basic method of excrement treatment can be divided into four categories: physical treatment method, chemical treatment method, physical chemical treatment method and biological treatment method according to the basic principle of its action. Among the most common methods are composting, drying of faeces, sedimentation of feces and solid-liquid separation, anaerobic fermentation, aerobic fermentation, preparation of biogas, cultivation of single cells, fly maggots, and cockroaches. (I) Composting and faeces drying 1. Composting is a method of aerobically fermenting feces and urine to separate feces. Microbes decompose the organic matter in the materials and produce high temperatures of 50-70°C, which can kill pathogenic microorganisms, parasites and their eggs. The decomposed material is odorless, and the complex organic compounds are degraded into simple compounds that are easily absorbed by the plant to form a highly efficient organic fertilizer. Methods include natural heap rot, greenhouse compost fermentation tank, compost fermenter, oxygenated dynamic fermenter and horizontal fermentor. The natural heap rot is the bark which grows and has a width and height of 10 to 15m, 2 to 4m, and 0.5 to 2m. When the temperature is 20°C, it must be decomposed for 15 to 20 days. During this period, it is necessary to turn it over once or twice. Oxygen supply, heat dissipation, and fermentation are even. Afterwards, it can be fully decomposed after being left standing for 2 to 3 months. To speed up the fermentation, straw or raft bottom can be used to lay ventilation pipes. Natural compost does not require equipment and energy, but it has a large area, slow decomposition, and low efficiency. Modern composting method is based on the principle of natural heap rot, using fermentation tanks and fermentation tanks and other equipment to provide the necessary conditions for microorganisms, which can increase the efficiency by more than 10 times. Compost requires material moisture content of 60% to 70%, carbon and nitrogen ratio of 25:1 to 30:1, the process of composting requires ventilation and oxygen, the appropriate heating day, the moisture content of the cooked material is about 30%. 2. Faeces Drying Fresh manure or solids after fermentation, solid-liquid separation, are dried for storage and transportation. Drying methods include direct sun drying and rapid mechanical drying, and the equipment for rapid mechanical drying mainly includes a quick dung dryer, a hot spray dung dryer, and a microwave dryer. (b) Sedimentation and solid-liquid separation of feces It is mainly used in swine farms where water flushing is used to remove organics, suspended solids and other solids from the waste water. Precipitation method requires the construction of sedimentation tanks, such as advection type, vertical flow type and inclined plate type. The advection-type sedimentation tank is generally 30-50m long, 5-10m wide, 2.5- 3m deep, and the slope of the bottom of the tank is l-2. The lower end is provided with a sludge tank, and the sewage stays in the tank for 1 to 2 hours. The flow rate is 5 to l0mm. /. Sewage water flows from the lateral dimples evenly distributed over the entire width of the sedimentation tank. The water inlet baffle is installed 0.5 to 1 m from the inlet. The baffle is 0.15 to 0.2 m above the water surface, and the depth is 0.25 m. The sludge discharge pipe diameter is 200 mm. . The solid-liquid separation method employs a solid-liquid separator. Rotary screen-type separators and pressure wheel-screw screen separators, as well as centrifugal and extrusion-type separators, are commonly used. The solid-liquid separation method can reduce the chemical oxygen demand in sewage by 14% to 16%. (c) Septic tank fermentation The septic tanks are divided into three types: oxidized septic tanks, facultative septic tanks, and anaerobic septic tanks according to the types of bacterial decomposition. The oxidizing septic tank is decomposed by the aerobic bacteria to the faeces, the upper part of the facultative septic tank is caused by the aerobic bacteria, the lower part is caused by the anaerobic bacteria, and the anaerobic septic tank is mainly caused by the anaerobic bacteria. 1. Aerobic and facultative septic tanks are generally divided into naturally inflated and mechanically inflated septic tanks. The pool of aerobic natural septic tanks is deep within lm and the facultative type is 1 to 1.5m. They rely on the photosynthesis of algae on the water to provide oxygen. The temperature range for growth of algae plants is 4 to 35°C, and the optimal temperature is 20 to 35°C. At the optimum temperature, the aerobic natural aeration septic tank can reduce the BOD value by 93% to 98% within 40 days. Natural inflatable pools are not fast, but they have large floor space. If sedimentation tanks, septic tanks, or solid-liquid separations are added in advance, the volume and area of ​​septic tanks can be reduced. The pool depth should be lm when the climate is warm and the sediment is pre-precipitated; it is 1–1.5m without treatment; 1.5–2m when the climate is moderate and there are more sediments; the climate changes greatly and sediments are deposited. When it is more, it is 2.0-2.5m. The depth of the mechanically-inflated septic tank is 2-6 m. The depth of the facultative type is relatively large, and aerators with lower power can be used. Therefore, the depth of the mechanically-inflated septic tank is usually of a facultative type. 2. The anaerobic septic tank anaerobic septic tank depth is generally 3 ~ 6m, through the fermentation can form a scum layer on the surface of the water, so that the natural aeration to a minimum extent, so mainly by the anaerobic bacteria decomposition of the feces, And precipitation separation. Advantages are the provincial machinery and labor, and can adapt to the higher solid content of feces; the disadvantage is that the processing time is long, requires a large capacity of the pool, sensitive to temperature, poor decomposition in cold, there is odor. When using anaerobic septic tanks, it is best to add feces once a day. The upper liquid is discharged once or twice a year. The unloading volume is more than 1/3 of the tank capacity, and half of the capacity should be maintained to ensure normal bacterial activity. . (4) Production of biogas The use of pig manure for anaerobic fermentation to produce biogas is currently a commonly used method of excrement disposal. In rural areas, conventional biogas fermentation tanks are commonly used. Pig manure processor equipment introduction Pig manure processing machinery and equipment: pig manure extractor, pig manure solid-liquid separator, pig manure wet-dry separator The pig manure processor is continuously operated by screw extrusion. When separating pig manure, it is possible to separate water-pumped pig manure and scraped pig manure and manually picked fresh pig manure. Pig manure processor working principle: The pig manure water is lifted by the submerged pump and sent to the pig manure processor. The auger is pressed to push the pig manure water to the front of the body gradually. At the same time, the pressure of the front edge is continuously increased, forcing the moisture in the material to be filtered at the side pressure. The screen is squeezed out of the drain and out of the drain. The work of the pig manure processor is continuous and its material is continuously raised to the inside of the body. The pressure at the front edge is continuously increasing. When it is large enough, the discharge port is opened and the extrusion port is extruded to reach a certain extent. The purpose of pressing material. If too much pig manure water is pumped into the pig manure processing equipment, it will also be discharged into the original septic tank via the discharge pipe and it will also play a role in stirring. The waste water separated by screw squeezing and filtering can be sent directly to the biogas tank to ferment biogas. Or send it to its storage sedimentation tank. In order to master the speed and moisture content of the material, the weights below the main machine can be adjusted to achieve a satisfactory and proper discharge condition. The pig manure processor has high automation level, simple operation, easy maintenance, large daily processing volume, low power consumption, and suitable for continuous operation. The key parts of pig manure processing machinery and equipment are made of stainless steel. The weight of the whole machine is nearly half a ton and the overall dimensions are small. It is an ideal solid-liquid separation equipment for large-scale pig farms, which can greatly improve the solid-liquid separation and benefit. Application of pig manure after treatment: 1. Solid pig manure separated by dehydration. The solid material extruded after treatment is almost odorless, and the viscosity is small and can be used directly as fertilizer or as pig bed material. 2. The pig manure slag is separated and mixed into the grasshopper. Stir thoroughly and add the strains to ferment. The granulation can be made into compound organic fertilizer. 3, can also be made into pellet feed, a good feed for fish. 4. Fertilizer for flower/special economic crops, which can transform the organic matter of the soil. 5, the sale of organic fertilizers for additional economic benefits. 6, the use of alternative coal as fuel, the combustion value of up to 5,000 kcal. The effect is very satisfactory. The economic cost is only one-tenth of coal. How to treat pig manure in pig farms Q: I want to raise about 50 pig farms. I don’t want to damage the local environment and do not want to directly discharge pig manure into rivers. I’d like to build a septic tank, but pigs are excreted daily if 50 pigs are raised. Can you accommodate it? Answer: The daily production of manure is 8.36kg per 100kg body weight, and 3051kg of manure is produced per year. This can be used to build a biogas digester. 1 In addition to heating, boiling water, cooking, and lighting, Qian'an Shangcun, Zhangcun Township, Linyi County, Hebei Province is a pilot village where the Ministry of Agriculture implements the “Ecological Homeland Enrichment Programâ€. "The pigs that were fed were drinking 'beer'!" "Beers" is another name for villagers for biogas, "said Liu Suqin, the villager, while feeding the pig. She used pigs to feed biogas from her own biogas digester. Feeding the pigs with biogas slurry would allow pigs to be slaughtered one month in advance. Biogas slurry feed to pigs: Use biogas slurry from a well-produced biogas digester and pig feed in a 1:1 ratio. According to reports, the pigs can gain weight quickly and resist disease. Each pig can save about 100-150 kilograms of feed, 20 to 30 days ahead of schedule. This not only reduces the cost of raising pigs, but also increases pig income. 2 In addition, biogas slurry, biogas residue fish culture: can improve the water environment, so that fish grow fast, can increase production by 10%. good quality. Normally, the amount of biogas slurry and biogas residue is 150-200 kilograms per mu, which cannot exceed 100 kilograms at a time. 3 Biogas Residue Fertilization: Fertilizer can be used to produce green food. 4 Biogas slurry is used as feed additive to feed cattle, and the average milk production per day increases by 2.29-2.4 kg; 5 When feeding chickens, the egg production rate of hens increased by 25%, and the weight gain rate of broilers increased by 28.75%. 6 Cultivation of mushrooms with biogas residue can increase production by 20%~30%. Plant Extract,Chaga Extract,Epimedium Extract,Yohimbine Extract Shaanxi Haibo Biotechnology Co., Ltd , https://www.rozenbio.com