In order to further improve the national pollutant discharge standards, the Ministry of Environmental Protection decided to revise and modify the "Recycled Copper, Aluminum, Lead, and Zinc Industrial Pollutant Emission Standards" (gb 31574-2015), which will increase unorganized emission control measures. On June 13, the Ministry of Environmental Protection has issued a draft of the standard revision form for publication in the form of an announcement, and completed the collection of opinions before June 22. The new emission standards will be implemented in advance in the Beijing-Tianjin-Hebei 2+26 urban area from October 1, 2017. 60cmx60cm Wall And Floor Tiles 60Cmx60Cm Wall And Floor Tiles,Gray Flower Ceramic Floor Tiles,Outdoor Peony Floor Tiles For Courtyard,Culture Stone Slate Tile Huaxian Tangyu Garden Landscape Engineering Co., Ltd. , https://www.carvedbricks.com
According to the announcement of the Ministry of Environmental Protection (draft for comments), this time will focus on the revision of steel (sintered pellets, ironmaking, steelmaking, steel rolling, iron ore mining, ferroalloys), building materials (cement, flat glass, ceramics, bricks), 20 national pollutant discharge standards and comprehensive air pollutant emission standards for non-ferrous metals (aluminum, lead-zinc, copper-cobalt-nickel, magnesium-titanium, tin-mercapto-mercury, recycled copper-aluminum-lead-zinc), thermal power, boilers, coking and other industries (gb16297) -1996), comprehensively increase the requirements for unorganized emission control measures for the transportation, loading, unloading, storage, transfer and transportation of materials (including waste) and production processes.
The Ministry of Environmental Protection explained the need to revise the above criteria in the announcement. Unorganized emissions are an important source of air pollution. Due to the lack of effective management and management methods, it has become a weak link in environmental management, improving regional environmental air quality, law enforcement supervision and comprehensive rectification of scattered and polluting enterprises, and deepening and upgrading of industrial enterprises. Etc. caused a significant impact. From the perspective of the type of pollutants, the problem of unorganized emissions of particulate matter and volatile organic compounds is most prominent. In order to implement the relevant provisions of the Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution, taking into account the characteristics of unscheduled emissions, irregular emissions, multiple sources and dispersion, and learning from foreign experience in unorganized emissions management, this standard is revised for different purposes. Industry characteristics, proposed targeted unorganized emission control measures to comprehensively improve the level of unorganized emissions management, enhance environmental law enforcement operability, significantly reduce unorganized emissions, and promote the overall improvement of ambient air quality.
The Ministry of Environmental Protection announcement (draft for comment) requires that the unorganized emission control measures for new projects be implemented from the date of issuance of the amendments. An appropriate transition period is given to existing enterprises, and unorganized emission control measures are implemented on January 1, 2019. In order to ensure the effect of the implementation of unorganized emission control measures in the 2+26 cities of Beijing-Tianjin-Hebei air pollution transmission channel for the autumn and winter 2017 pollution control, and ensure the completion of the 2017 air quality improvement target determined by the Air Pollution Prevention Action Plan, 2+ is required. Since October 1, 2017, the Ministry of Environmental Protection has implemented the amendments to the “Recycling Standards for Recycling Copper, Aluminum, Lead and Zinc Industrial Pollutants†to explain the need to strengthen the unorganized emission control of the recycled metal industry. Since most of the recycled metals in China are small and medium-sized enterprises, many of them are in the state of extensive production and disorderly discharge, and the unorganized emissions of corporate particulate matter are serious. Although strict emission standards have been developed and implemented for the regenerative metals industry, the factory-bound control indicators specified by the standards are less effective for unorganized emissions control. To this end, it is necessary to put forward targeted and operational measures for control and control, and to extend the monitoring of unorganized emissions from the factory boundary to the plant area, so that the task of unorganized emission management can be embodied, and the guidance of the enterprise and the environmental supervision can be enhanced. Sex.
The unorganized discharge of industrial particles of recycled metals (copper, aluminum, lead, zinc) focuses on pretreatment, fire smelting, casting, etc. in the production process of recycled metals, followed by material storage and transportation.
Corresponding to the unorganized emission of various production processes in the recycled metal industry, the proposed requirements for unorganized emission control measures have been put forward to comprehensively improve the level of unorganized emission management of recycled metal enterprises, enhance the operability of environmental law enforcement, and significantly reduce unorganized emissions and promote The overall quality of the ambient air has improved.
The amendments also require that the unorganized emission control requirements specified in this standard cannot be met due to safety factors or special process requirements, and other effective pollution control measures may be taken with the approval of the environmental protection authority. (Dong Chunming)
Amendment to the "Emission Standards for Pollutants of Recycled Copper, Aluminum, Lead and Zinc" (gb31574-2015) (Draft for Comment)
In order to further improve the national pollutant discharge standards, the Ministry of Education decided to amend the "Recycled Copper, Aluminum, Lead, and Zinc Industrial Pollutant Emission Standards" (gb 31574-2015) and increase 4.3 unorganized emission control measures, as follows:
4.3 Unorganized emission control measures 4.3.1 Unorganized emission control in general areas 4.3.1.1 Transportation, storage and transshipment of materials (including smelting slag) a) Transportation of materials that generate dust, the vehicles shall adopt measures such as sealing and covering. Roads in the plant area should be hardened, and dust-removing measures such as watering and spraying should be taken. Recycled lead transport vehicles should be cleaned of the wheels or other control measures before leaving the factory.
b) Dust-generating materials should be stored in a shed or warehouse with hardened floors.
c) The material transfer point and blanking point of the dust-generating material shall be provided with a closed cover and equipped with a dust removal facility.
4.3.1.2 Production of recycled metal a) Pretreatment (disassembly, crushing, sorting, washing, drying, etc.) of waste non-ferrous metal materials shall be carried out in a closed workshop. The process of generating dust such as crushing, sorting, drying, etc. shall be provided with a gas collecting hood and equipped with a dust removal facility. The pretreatment of the regenerated lead should be operated in the negative pressure region.
b) Excipient preparation and batching process The dust collecting point shall be provided with a gas collecting hood and equipped with dust removal facilities.
c) The operations of the smelting, refining and casting processes shall be carried out in a closed plant. The operation of the smelting, refining, and casting processes of the regenerated lead should be carried out in the negative pressure region. The gas supply hood and the discharge port of the smelting furnace shall be provided with a gas collecting hood and equipped with dust removal facilities.
d) The collector surface shall be provided with a gas collecting hood and equipped with a dust removal facility. The electrolysis of recycled lead should be carried out in a vacuum plant.
e) The chute used in the production of recycled lead should be sealed.
4.3.2 Unorganized Emission Control in Key Areas 4.3.2.1 Transportation, Storage and Transshipment of Materials (including Smelting Slag) a) Transportation of materials that generate dust, the vehicles shall adopt measures such as sealing and capping. Roads in the plant area should be hardened, and dust-removing measures such as watering and spraying should be taken. Recycled lead transport vehicles should be cleaned of wheels and bodies before leaving the factory or other control measures.
b) Dust-generating materials should be stored in closed silos or enclosed buildings.
c) The material transfer point and blanking point of the dust-generating material shall be provided with a closed cover and equipped with a dust removal facility.
4.3.2.2 The unorganized emission control measures for the production of recycled metals in recycled metal production are the same as in the general areas.
4.3.3 Production process equipment, exhaust gas collection systems and pollution control facilities should be operated simultaneously. If the exhaust gas collection system or pollution control facility is faulty or overhauled, the corresponding production process equipment shall be stopped, and the equipment shall be put into use after the completion of the inspection, or the standby pollution treatment facility shall be opened.
4.3.4 Due to safety factors or special process requirements, the unorganized emission control requirements specified in this standard cannot be met. Other effective pollution control measures may be taken with the approval of the competent environmental protection department.
Explanation of the revised list I. Basic information of the industry In 2016, the total output of China's recycled non-ferrous metal industrial varieties (copper, aluminum, lead and zinc) was about 13.68 million tons. Among them, the output of recycled copper is about 3.21 million tons, the output of recycled aluminum is about 6.87 million tons, the output of recycled lead is about 2.05 million tons, and the output of recycled zinc is 1.55 million tons. More than 70 companies with an annual production capacity of more than 100,000 tons lead the world in leading technology equipment. According to incomplete statistics, as of the end of 2016, 20 of the reclaimed copper enterprises with a capacity of more than 50,000 tons, of which 6 exceeded 100,000 tons, a total of 17 reclaimed copper enterprises passed the requirements of the copper smelting industry, with a total capacity of 4.13 million tons; Nearly 20 regenerative aluminum enterprises have a capacity of 100,000 tons, of which 5 have reached 300,000 tons. A total of 30 recycled aluminum enterprises have passed the aluminum industry standard conditions, with a total production capacity of 3.7 million tons; and the production capacity of recycled lead enterprises exceeds 100,000 tons. 10, the top five enterprises accounted for more than 52% of the national output; more than 15 regenerative zinc enterprises with a capacity of more than 20,000 tons, the industrial concentration has increased significantly, and the development stamina has been significantly enhanced.
II. Recycling of copper, aluminum, lead and zinc industrial production and pollution control In the process of reclaimed copper smelting, the main production processes are raw material pretreatment, fire smelting process and electrolytic refining process. In the process of reclaimed aluminum smelting, the main production processes are raw material pretreatment, fire smelting process and casting process. The main production processes in the process of regenerative lead smelting are the melting process, the acid production process, the fire refining process and the lead electrolysis process. In the process of reclaimed zinc smelting, the main production processes are raw material pretreatment, fire smelting process and ingot casting process. The main pollutants are particulate matter, sulfur dioxide, nitrogen oxides, sulfuric acid mist, fluoride, hydrogen chloride, dioxins, arsenic, lead, tin, antimony, cadmium, chromium and their compounds. For the exhaust gas generated in the process of regenerative metal smelting, bag dust collectors, electrostatic precipitators and electric bags are generally used in accordance with the dust collector treatment.
III. Explanation on unorganized emission control measures (I) The necessity of unorganized emission control Due to the sustained and rapid development of China's recycled metals (mainly copper, aluminum, lead and zinc), it has quickly become an important part of China's non-ferrous metal industry. Most of them are small and medium-sized enterprises, many of which are in the state of extensive production and disorderly discharge, and the unorganized emissions of corporate particulate matter are serious. Although strict emission standards have been developed and implemented for the regenerative metals industry, the factory-bound control indicators specified by the standards are less effective for unorganized emissions control. To this end, it is necessary to put forward targeted and operational measures for control and control, and to extend the monitoring of unorganized emissions from the factory boundary to the plant area, so that the task of unorganized emission management can be embodied, and the guidance of the enterprise and the environmental supervision can be enhanced. Sex.
(II) Unorganized discharge The unorganized discharge of industrial particulates from recycled metals (copper, aluminum, lead, zinc) focuses on pretreatment, fire smelting, casting, etc. in the production process of recycled metals, followed by material storage and transportation.
1. Recycled metal production Recycled copper smelting Unorganized emissions are mainly particulate matter produced by raw material pretreatment, pyrometallurgical process, and electrolytic refining process.
Unorganized emissions from reclaimed aluminum smelting are mainly particulate matter produced by processes such as raw material pretreatment, pyrometallurgical processes, and casting processes.
Unorganized emissions from recycled lead smelting are mainly particulate matter produced by the melting process, the acid production process, the pyrometallurgical process, and the lead electrolysis process.
Unorganized emissions from reclaimed zinc smelting are mainly particulate matter produced by processes such as raw material pretreatment, pyrometallurgical smelting, and ingot casting.
2. Material transportation, loading and unloading, transportation of powdered materials in the storage plant, transfer of bulk materials, transportation, and transfer points and blanking points will result in unorganized emissions of particulate matter.
(III) Unorganized Emission Control Measures The unorganized emissions and control measures for the production processes of the recycled copper, aluminum, lead and zinc industries are shown in the table below.
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Unorganized Emissions and Control Measures (IV) Differences between Control Measures in General Areas and Key Areas For general areas, comprehensive consideration of the “Code for Design of Environmental Protection Engineering for Nonferrous Metals Industry†(gb50988-2014) and “Guidelines for Feasible Technology for Pollution Prevention and Control of Recycled Lead Smelting†The unorganized emission management and control requirements specified in the “Recycled Copper Smelting Process Design Specification†(gb51030-2014) and other documents, combined with industry characteristics to develop unorganized emission control measures. For key areas, in addition to the implementation of general regional control measures, more stringent control measures should be taken, including: dust-generating materials should be stored in closed silos or enclosed buildings; regenerative lead transport vehicles should be cleaned before leaving the factory. Bodywork.
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