Annual output of 400,000 tons of livestock and poultry feed manufacturing factory project report

With the acceleration of the transformation and upgrading of traditional animal husbandry in Hainan Province to modern animal husbandry, the enhancement of core competitiveness and the realization of sustainable and healthy development, the aquaculture industry has become more and more important, and as the main product of the aquaculture industry-feed, The demand has also become larger and larger. The demand for feed in the aquaculture industry is far greater than the supply. Taking advantage of this business opportunity, the client of this project invested 120 million yuan to build a 400,000-ton-a-year livestock and poultry feed project. The large project is located in the Economic Development Zone of Hainan Province.

The large feed factory project covers an area of ​​40003m2. The construction area is 54934m2. The project is divided into two phases. The first phase of the construction project has an investment of 80 million yuan, the first phase of the feed production project produces 250,000 tons of livestock and poultry feed, and the second phase of the construction feed project has an investment of 40 million yuan. Produce 150,000 tons of livestock and poultry feed.

1. The main engineering content of the large poultry and livestock feed production project with an annual output of 400,000 tons

This large feed processing project for poultrys and livestocks is located in the southern triangle of Economic Development Zone, Hainan Province. The total investment of the project is 120 million yuan, covering an area of ​​40003m2, with a total construction area of ​​about 54934m2. The main construction is to build a full-price livestock and poultry feed with a production capacity of 15t/h. There are 5 production lines with an annual output of 400,000 tons of livestock and poultry feed. The main construction content includes production workshops, silos, offices, etc., as well as supporting public works and environmental protection projects.

Project engineering composition list

2. The main feed production equipment of the large poultry and livestock feed factory project with 400,000 tons per year production capacity

3. The main raw and auxiliary materials and fuel consumption of the project

4. Product plan and packaging method

This multi purpose annual output of 400,000 tons of livestock and poultry feed making project will set up 5 livestock and poultry feed production lines with a production capacity of 15t/h, with an annual output of 400,000 tons of livestock and poultry feed.

5. General layout analysis

The general layout of the project is based on the principles of simplicity and convenience. The project has 1 entrance and exit, located on the south side of the project, facing the planned road, which is convenient for the transportation of raw materials and finished products; the project office and living building is located on the left side of the entrance and exit, which is convenient for people to enter and exit; the production workshop is located in the middle of the plant plot, and the batching warehouse is located in the northeast of the plot angle. It can be seen that each department of the project is set up compactly to facilitate the transfer of logistics.

The process dust exhaust cylinder after the project treatment is set on the top floor of the production workshop. The project office area is located in the side wind direction of the dust and waste gas pollution source. A certain greening is set in the factory. When beautifying the plant landscape, it can purify the air, insulate and reduce noise effect. In general, the layout of the project is basically reasonable.

6. Conclusion of environmental impact during construction period

The ecological environmental impact during the construction period of the project is mainly manifested in the impact of soil erosion caused by soil loosening. However, the impact during the construction period is partial and short-term, and will not cause long-term impact on the surrounding ecological environment. With the end of the construction period, the construction site will be covered by cement, buildings and vegetation, which will help eliminate the adverse effects of soil erosion.

During the construction period, the operation of various construction machinery and transportation vehicles will generate exhaust gas, dust, waste water, noise, solid waste, and domestic sewage and domestic garbage of construction personnel. These pollutants will constitute the surrounding environment Different degrees of pollution impact. After taking corresponding environmental protection measures, the environmental impact can be minimized, and the construction of the project has little impact on the surrounding environment. The environmental impact during the construction period is temporary and disappears immediately after the completion of the construction.

7. Environmental impact conclusion during operation period

(1) Conclusion of environmental air impact analysis

The main impacts on the atmospheric environment during the operation period of the project are the dust generated during the production process, the peculiar smell of the workshop and the cooking fume in the canteen.

①Clean up the dust in the work section

The main raw material receiving equipment required for the poultry livestock feed mill plant project production is cleaned up, and the dust concentration produced by the cleaning is 1200mg/m³, and the cleaning dust production amount is 6.34t/a. After the dust collector is processed, the discharge outlet concentration is 1.2mg/m³. The discharge rate is 0.0048kg/h, the discharge volume is 0.0063t/a, and the clean-up dust emission concentration meets the limit requirements of the unorganized emission standard in Table 2 of the "Comprehensive Emission Standard of Air Pollutants" (GB16297-1996).

②Dust in the feeding section

The dust concentration generated during the feeding process of various raw materials and auxiliary materials is about 1200mg/m³. The equipped silo is a sealed storage tank, and 4 sets of pulse bag filter are installed. The total air volume of the fans here is 4000m³/h (the project is equipped with 4 sets of pulse bag filter, and the air volume of each fan is 1000m³/h), and pulse dust removal The dust removal efficiency of the filter is 99.9%. The amount of dust generated is 1200mg/m³×4000m³/h = 4.8kg/h (4.75t/a).

The collection rate of the air collecting hood collection device is 96%. After being treated by the dust collector, it is discharged through a 15m exhaust tube. The discharge concentration of the organized exhaust gas discharge port is 1.2mg/m³. Because the dust discharge rate is 0.0048kg/h, the discharge The volume is 0.0046t/a, and the dust emission concentration of the feeding exhaust cylinder meets the requirements of the secondary emission standard of the "Comprehensive Emission Standard of Air Pollutants" (GB16297-1996). The uncollected part of the dust is discharged in an unorganized form. The amount produced here is: 0.19t/a, and the production rate is 0.192kg/h. Here, a water mist dust removal device is set up to remove dust, with a removal efficiency of 95%. Unorganized dust during the feeding process The discharge volume is 0.0096t/a, the discharge rate is 0.0096kg/h, and the discharge concentration of fugitive dust in the feeding process meets the limit requirements of the fugitive emission standard in Table 2 of the "Comprehensive Emission Standard of Air Pollutants" (GB16297-1996).

③Dust in the crushing section

The dust concentration produced by the crushing of raw materials is 5000mg/m³. This process is equipped with a closed collection device to collect the dust. The project uses a pulse bag filter for dust removal. The air volume of the fan here is 50000m³/h (the project is equipped with 5 pulse bag filters, The total air volume of the fan is 50000m³/h), the dust removal efficiency of the pulse dust collector is 99.9%, the pulverized dust generation is 495t/a, the discharge concentration after the dust collector is 5mg/m³, the dust discharge rate is 0.25kg/h, discharge The volume is 0.495t/a, and the concentration of crushed dust meets the requirements of the secondary emission standard of "Comprehensive Emission Standard of Air Pollutants" (GB16297-1996).

④Dosing bin dust

The dust concentration produced by the top dust of the batching warehouse is about 1000mg/m³. This process is equipped with a closed collection device to collect dust. The project batching bins is equipped with a pulse bag filter for dust removal, and the amount of crushed dust generated is 35.64t/a After the dust collector is processed, the discharge outlet concentration is 1mg/m³, the dust discharge rate is 0.0045kg/h, and the discharge volume is 0.036t/a. The dust concentration of the batching bin meets the table in the "Comprehensive Emission Standard of Air Pollutants" (GB16297-1996) 2 The requirements of secondary emission standards.

⑤Dust generated in the cooling and crushing section

After granulation, it is cooled by negative pressure suction and crushed after cooling. This process will produce dust. This process is equipped with a closed collection device to collect dust. Use a high-efficiency cyclone dust collector + a bag dust collector to produce this process The dust collection and utilization. During the cooling and crushing process, the dust concentration generated is about 1500mg/m³. The amount of dust generated during the cooling and crushing process is 198t/a, the discharge outlet concentration after the dust collector is 6mg/m³, the dust discharge rate is 0.3kg/h, and the discharge amount is 0.792t/a. The dust concentration generated by cooling and crushing meets the requirements of " The requirements of the secondary emission standard in Table 2 in the Comprehensive Emission Standard of Air Pollutants (GB16297-1996).

⑥Dust from packing section

The dust concentration produced during the feed product packaging process is 1200mg/m³, and the packaging dust production volume is 4.75t/a. The collection rate of the air collecting hood collection device here is 96%, and the dust removal efficiency of this type of dust collector is 99.9%. After the dust collector is processed, the discharge outlet dust concentration is 1mg/m³, the dust discharge rate is 0.002kg/h, and the discharge volume is 0.0038t /a, the dust concentration of the packaged discharge outlet meets the requirements of the secondary emission standard in Table 2 of the "Comprehensive Emission Standard of Air Pollutants" (GB16297-1996) The uncollected part of the dust in the packing process is discharged in an unorganized form. The amount produced here is: 0.16t/a, and the production rate is 0.006kg/h. A water mist dust removal device is set here to remove dust, with a removal efficiency of 95%. The packing process is unorganized The amount of dust emission is 0.0079t/a, the emission rate is 0.004kg/h, and the unorganized emission standard limit requirements in Table 2 of the "Comprehensive Emission Standard of Air Pollutants" (GB16297-1996) for unorganized dust during the packing process.

⑦Small smell in workshop

Small smell in the workshop by planting more plants that easily absorb smelly substances around the workshop and warehouse, the negative impact of smelly substances can be minimized as much as possible. After dilution and diffusion, the smelly smell of the workshop meets the new "Emission Standard for Odor Pollutants" (GB14554-93). The expansion and reconstruction of the second-level standard has little effect on the surrounding ambient air.

⑧Fume

The emission concentration of oil fume meets the requirements of the maximum allowable emission concentration of oil fume 2.0mg/m³ in Table 2 of the "Emission Standards for Cooking Fume for Catering Industry" (GB18483-2001). After treatment, the oil fume is discharged through the flue on the roof of the building, which has an impact on the surrounding atmosphere. Smaller.

(2) Water environmental impact

The Hainan municipal pipeline network has not been connected to the feed project area, and the feed manufacturing plant project cannot be operated. After the sewage pipe network in the project is connected, the domestic sewage discharge of the project is 12.6 m³/d, 4158 m³/a, and the domestic sewage is pretreated by septic tanks and grease traps to reach the "Integrated Wastewater Discharge Standard" (GB8978-1996). After the grade standard, it is discharged into the municipal sewage pipe network and enters the Yangpu sewage treatment plant for treatment. After the above treatment, the wastewater produced by the poultry livestock feed manufacturing company project has little impact on the environment.

(3) Environmental impact of noise

The noise of the complete feed line project mainly comes from the noise generated by the operation of fans, hoists, permanent magnet cylinders, shredders, mixers, packaging machines and other equipment, and the source strength is between 65 and 100 dB (A). After basic vibration reduction, installation of silencers, sound insulation of workshops and distance noise reduction, it can meet the requirements of Category 3 standards of the "Environmental Noise Emission Standard for Industrial Enterprises and Plant Boundaries" (GB12348-2008), and has little impact on the surrounding environment.

(4) Solid waste

The dust collected by the dust collector equipped in each section of the poultry livestock feed mill project is collected and reused for production. The solid waste collected during the cleaning and magnetic separation process is the iron impurity in the raw material, and the production volume is 1.2t/a, which can be stockpiled in the poultry livestock feed factory and sold to the waste collection station on a regular basis. The packaging solid waste generated during the packaging process of the feed processing project is mainly waste woven bags, etc. The output is 5.0t/a, and the waste recycling station for external sales. The amount of domestic waste generated is 23.1t/a, which will be cleared and transported by the local sanitation department. The amount of waste oil generated by equipment maintenance is 50kg/a, the amount of laboratory waste generated is 0.005t/a, the amount of laboratory cleaning wastewater generated is 1.8t/a, and the qualified unit is entrusted to transport and handle the solids generated by the project for poultry livstock feed production. All wastes can be reasonably disposed of or comprehensively utilized, and will not have a significant impact on the surrounding environment.

Comprehensive evaluation conclusion: The site selection of this 400000 tons large animal feed plant project is reasonable from an environmental point of view, and the plant layout is reasonable. The environmental protection measures adopted by the project are economically and technically feasible and meet long-term compliance requirements. Although the construction and operation of this big feed mill project will have certain adverse effects on the ecological environment and nearby residents, after earnestly implementing various environmental protection measures, pollutant emissions can be controlled within the relevant national standards, and the regional environmental quality can meet The corresponding environmental quality target requirements. Therefore, from the perspective of environmental protection, the construction of the poultry livestock feed production line project is feasible.