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Ministry of Ecology and Environment: Interpretation of 7 standards or amendments including "Emission Standard of Air Pollutants for Foundry Industry"

 Last Update: 2022-01-18
 Source: Internet
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A few days ago, the Ministry of Ecology and Environment and the State Administration for Market Regulation jointly issued the "Emission Standards for Air Pollutants in the Foundry Industry" (GB 39726-2020), "Emission Standards for Air Pollutants in the Pesticide Manufacturing Industry" (GB 39727-2020), and "Onshore Emission Standards" (GB 39727-2020).

(1) What is the background of the standard's promulgation?

Since 2000, China's casting output has ranked first in the world for 17 consecutive years, which is equivalent to the total output of the second to tenth countries.

At present, China's foundry industry air pollutant emission management mainly implements the "Comprehensive Air Pollutant Emission Standard" (GB 16297-1996) and the "Industrial Furnace Air Pollutant Emission Standard" (GB 9078-1996).

(2) What are the characteristics of this standard in terms of emission control?

This standard is based on the whole process management and control ideas from source reduction, process control to end treatment, combines unorganized emission control and organized emission control, clarifies the pollution factors and control requirements of each process and equipment pollution node, and effectively solves the foundry industry Pollution discharge is a serious problem

Unorganized emission of particulate matter is the focus and difficulty of pollution control in the foundry industry

Regarding the control of unorganized emissions of VOCs, the standard seizes the main sources of pollution such as the storage, transfer, and surface coating processes of VOCs materials, and specifies requirements for effective unorganized emission control measures; at the same time, for enterprises using raw and auxiliary materials with low VOCs content Put forward differentiated management and control requirements, and promote the implementation of source emission reductions in the industry

According to the production process of ferrous metal casting and non-ferrous metal casting, the eight processes of metal smelting, styling, core making, pouring, falling sand cleaning, sand treatment, casting heat treatment, and surface coating are distinguished, and the pollution of each process is related to equipment and emissions.

Implement dual control of emission concentration and removal efficiency; at the same time, in order to encourage source substitution, for raw and auxiliary materials used in compliance with national regulations on products with low VOCs content, only concentration indicators are required to be implemented, and removal efficiency indicators are not implemented

The surface coating process is a key emission link of VOCs in the foundry industry.

(3) How feasible is the standard implementation?

The organized emissions of metal smelting and other processes in the foundry industry can adopt bag dust removal, filter cartridge dust removal, wet or dry desulfurization, low-nitrogen combustion and other technologies.

At present, large and medium-sized enterprises with advanced technology and relatively complete environmental protection measures have the ability to meet the standards; other enterprises should implement upgrades to environmental protection facilities according to their own conditions, which will increase production costs accordingly.

In the process of standard formulation, after extensively soliciting industry opinions and fully communicating with industry associations and related enterprises, all parties have reached an agreement on the implementation of the standard

(4) What are the environmental and social benefits of standard implementation?

Particulate matter is a key pollutant controlled by the foundry industry
.
With the implementation of this standard, the key areas have already upgraded their production processes and environmental protection facilities in advance, and it is estimated that particulate matter emissions can be reduced by about 30%, and other areas can reduce particulate matter by more than 50%, with a total emission reduction of about 50,000 to 80,000 tons
.
At the same time, it can reduce VOCs emissions by about 30%, with a total emission reduction of about 30,000 tons
.
The implementation of this standard has a positive effect on improving ambient air quality
.

As a threshold for industry access, the new standard will further promote fair competition in the industry, effectively solve the problem of "bad money driving out good money", and promote industry structural adjustment and high-quality development
.

2.
Regarding the "Emission Standard of Air Pollutants for Pesticide Manufacturing Industry" (GB 39727-2020)

(1) What is the background of the standard's promulgation?

At the current stage, China is facing the dual pressures of severe particulate matter (PM2.
5) pollution and increasingly prominent ozone (O3) pollution.
Especially in summer, O3 has become the primary factor leading to excessive air quality in some cities
.
Volatile organic compounds (VOCs) are important precursors for the formation of PM2.
5 and O3, and some VOCs are toxic substances and malodorous substances, which are currently the key air pollutants controlled by China
.
In order to strengthen the prevention and control of VOCs pollution and improve the "industry + comprehensive" VOCs emission standard system, it is necessary to formulate air pollutant emission standards for typical VOCs emission industries such as pesticides
.

After a long period of rapid development, China’s pesticide industry has become the world’s largest producer and exporter of pesticides.
It can produce more than 500 kinds of pesticide technicals, more than 300 kinds of pesticides per year, and more than 30,000 officially registered pesticide preparations
.
The pesticide industry is an important VOCs emission industry, with long production processes, a large variety of raw materials, large amounts, low product yields, large pollutant emissions, complex components, and mostly toxic and hazardous substances
.
For a long time, the air pollutant emission management of the pesticide industry has implemented the "Comprehensive Emission Standard of Air Pollutants" (GB 16297-1996).
The emission limits are loose and the industry is not well-targeted.
It is urgent to formulate special industry standards to implement precise pollution control.
Scientific pollution control, pollution control requirements in accordance with the law, raise the industry access threshold, and strictly regulate emission management
.

(2) What are the characteristics of this standard in terms of emission control?

The production process of pesticides involves many processes such as the storage, transportation, reaction, separation and refining of VOCs raw materials, which may cause the emission of VOCs, and the amount of fugitive emissions is large, and there are also a large number of toxic, harmful and odorous substances
.
This standard is based on the whole process management and control ideas from source reduction, process control to end treatment, and the two-pronged control of organized and unorganized emissions can effectively reduce pollutant emissions
.

1.
Strengthen source and process control, and comprehensively strengthen management of unorganized emissions

The control of unorganized emissions of VOCs is one of the difficulties of the pesticide industry.
The standard implements the entire process of supervision of unorganized emissions based on the characteristics of the pesticide industry
.
First, the implementation of differentiated control for the use of raw and auxiliary materials with low VOCs content, to promote enterprises to achieve source emission reduction; second, for raw and auxiliary materials storage, production processes and waste water treatment and other unorganized discharge links, clear measures for control requirements are specified ; Finally, in view of the effect of unorganized emission control, the recommended value of the concentration limit for plant monitoring is stipulated, which will be implemented by the local government according to the needs of local environmental protection
.

2.
Combining comprehensive projects and characteristic pollutant projects to comprehensively control VOCs emissions

There are many types of air pollutants emitted by the pesticide industry.
There are dozens of organic solvents commonly used in the industry, and they also involve toxic and harmful inorganic pollutants such as hydrogen chloride, ammonia, and cyanide
.
In order to comprehensively control the emission of air pollutants in the pesticide industry, a combination of "comprehensive projects + characteristic pollutant projects" is adopted to ensure the strictness of emission supervision
.
Comprehensive projects include non-methane total hydrocarbons (NMHC) and total volatile organic compounds (TVOC) to control the total emissions of VOCs
.
The characteristic pollutant project highlights the key points, considers photochemical reactivity control of benzene series, etc.
, prevents health risks, controls phosgene, hydrogen cyanide, etc.
, and prevents odors from disturbing the control of hydrogen sulfide and ammonia
.

3.
Implement dual-index control of concentration and efficiency to achieve effective reduction of VOCs

While the standard follows the control method of emission concentration limits, it also considers the characteristics of VOCs ventilation emissions, and implements dual control of emission concentration and removal efficiency for key sources with large emissions
.
When the initial emission of NMHC exhaust gas from workshops or production facilities is greater than 3kg/h (the key areas are tightened to 2kg/h), removal efficiency control should also be implemented, and the treatment efficiency should not be less than 80% to effectively prevent dilution emissions and reduce VOCs.
Total emissions
.

(3) How feasible is the standard implementation?

For particulate matter and acid-base waste gas, most pesticide companies have installed effective treatment facilities, which basically do not need to be upgraded; for VOCs waste gas, the current treatment technology is relatively mature, and pesticide companies in key areas such as the Yangtze River Delta and Beijing-Tianjin-Hebei have been relatively mature in recent years.
Environmental protection facilities have been upgraded, and many companies have installed high-efficiency treatment devices such as regenerative combustion (RTO) and adsorption, which can meet emission control requirements
.

The upgrading and transformation of environmental protection facilities by some enterprises will increase production costs accordingly.
According to calculations and investigations, they are within the acceptable range of enterprises
.
Considering that it will take a certain period of time for existing enterprises to meet the standards, this standard gives existing enterprises a two-year transition period
.

(4) What are the environmental and social benefits of standard implementation?

At present, China holds 2010 pesticide registration certificates and 719 enterprises above designated size, including 586 chemical pesticide manufacturing enterprises, which are the main emission sources of VOCs and inorganic pollutants in the pesticide manufacturing industry
.
The implementation of this standard can achieve about 200,000 tons of VOCs emission reduction each year, which has a positive effect on improving the ambient air quality, and can effectively reduce the toxic, harmful and odorous substances discharged into the environment, which is beneficial to protect the surrounding public health and reduce the odor that disturbs the people.
Problem
.

Through the implementation of standards and strict environmental access, it will further promote fair competition in the industry, effectively solve the problem of "bad money driving out good money", and promote industry transformation and upgrading and high-quality development
.

3.
Regarding the "Emission Standard of Air Pollutants for Onshore Oil and Gas Extraction Industry" (GB 39728-2020)

(1) What is the background of the standard's promulgation?

China's oil mainly occurs in the northeast and northwest regions, and natural gas mainly occurs in the Ordos, Sichuan and Tarim Basins in the west
.
In 2019, China produced 191 million tons of crude oil and 173.
6 billion cubic meters of natural gas
.

The main air pollution sources and pollutants in the industry are sulfur dioxide (SO2) emitted from the sulfur recovery tail gas of natural gas purification plants, and volatile organic compounds (VOCs) emitted from the oil and gas gathering and processing process
.
The sulfur recovery tail gas of natural gas purification plants has a high SO2 emission concentration and is difficult to control.
For a long time, only the maximum allowable emission rate index of the "Comprehensive Emission Standard of Air Pollutants" (GB 16297-1996) has been implemented
.
Due to the scattered facilities and remote location of the oil and natural gas extraction industry, the relevant provisions of the "Unorganized Emission Control Standard for Volatile Organic Compounds" (GB 37822-2019) do not apply to this industry
.
Methane is an important greenhouse gas.
Petroleum and natural gas extraction is a key industry for methane emissions and needs to be controlled
.
In order to implement the requirements of precise pollution control, scientific pollution control, and pollution control according to law, it is urgent to formulate emission control standards applicable to the industry in accordance with the characteristics of the industry and the level of pollution prevention technology
.

(2) What are the characteristics of this standard in terms of emission control?

In view of the SO2 emission from the sulfur recovery unit of the natural gas purification plant, the emission limit is set according to the scale of the plant
.
For sulfur recovery devices with a total scale of more than 200 tons/day, the SO2 control requirements are consistent with the "Petroleum Refining Industry Pollutant Emission Standard" (GB 31570-2015), with a limit of 400mg/m3; for small-scale sulfur recovery devices, Considering economic and technical feasibility, the limit is 800mg/m3
.

In response to the problem of VOCs emissions in the oil and gas gathering and processing process, measures are provided for the storage and loading of volatile organic liquids such as crude oil and stable light hydrocarbons, leakage of equipment and pipeline components, oil and gas field produced water and other gathering and processing systems, and flare systems.
Request
.
Considering the actual situation of the industry, the control requirements have been appropriately relaxed for the existing crude oil storage tanks, leakage of equipment and pipeline components, and oil and gas field produced water in non-key areas
.

In view of the methane emission problem in the oil and gas extraction process, collaborative control requirements have been proposed for natural gas (including oilfield associated gas) production, equipment and pipeline component leakage, oil and gas field produced water gathering and processing systems, and flare systems
.

(3) How feasible is the standard implementation?

For large-scale natural gas purification plants, the "Claus + tail gas hydrogenation reduction" process is adopted, and the equipment is adaptively upgraded; for small-scale natural gas purification plants, "extended Claus + tail gas treatment" and other processes are adopted.
It can achieve SO2 emission standards
.
For the discharge of VOCs, learn from the mature management experience of petrochemical industries, upgrade storage tanks, carry out leak detection and repair of pipelines and components, and strengthen the collection and treatment of waste gas emitted from the liquid surface of wastewater, etc.
, to achieve effective control of VOCs
.

The upgrade and transformation of production process equipment and environmental protection facilities by enterprises will increase production costs correspondingly.
According to calculations and investigations, they are within the acceptable range of enterprises
.
Considering that it will take a certain period of time for existing enterprises to meet the standards, this standard gives existing enterprises a two-year transition period
.

In the process of standard formulation, after extensively soliciting industry opinions and fully communicating with major manufacturers, all parties have reached an agreement on the implementation of the standard
.

(4) What are the environmental and social benefits of standard implementation?

By implementing this standard, natural gas purification plants can reduce SO2 emissions by about 60%
.
The current VOCs governance foundation of China's onshore oil and gas exploration enterprises is generally weak, and the implementation of the standards will effectively promote the industry's VOCs emission reduction
.
At the same time, this standard is the first national pollutant emission standard for coordinated control of greenhouse gas emissions.
The implementation of the standard will effectively reduce methane emissions, promote green, low-carbon, and high-quality development of the industry, and play a positive role in achieving China's greenhouse gas emission reduction goals
.

4.
Regarding the amendments to the "Emission Standard of Air Pollutants for the Brick and Tile Industry" (GB 29620-2013)

(1) The background and necessity of standard revision?

Since the "Brick and Tile Industry Air Pollutant Emission Standards" (GB 29620—2013) was issued and implemented, it has been controlling the brick and tile industry's air pollutant emissions, promoting the progress of the brick and tile industry pollution control technology, and promoting the transformation and upgrading and structural adjustment of the brick and tile industry.
Played an important role
.

In the implementation of the standard, the brick and tile industry reflects the standard brick and tile kiln benchmark excess air coefficient of 1.
7, which is equivalent to a benchmark oxygen content of 8.
6% in the flue gas, which is far from the actual production process of the brick and tile industry
.
In order to implement the national requirements for precise pollution control, scientific pollution control, and pollution control according to law, and to increase the enthusiasm of enterprises in pollution control, the Ministry of Ecology and Environment has revised GB 29620-2013
.

(2) Compared with the original standard, what are the main changes in the amendment list?

One is to adjust the reference oxygen content of artificial drying and roasting kiln flue gas
.
The roasting process of China's brick and tile industry is basically an internal combustion process, and a large amount of air needs to be supplemented during the roasting and drying process.
The flue gas has a high oxygen content, and the monitoring data shows that it is as high as about 18%
.
Comprehensively considering the status of the brick and tile production process, referring to relevant domestic and foreign standards, the artificial drying and roasting kiln flue gas excess air coefficient of 1.
7 (equivalent to the baseline oxygen content of 8.
6%) is adjusted to the baseline oxygen content of 18%
.

The second is to adjust the sulfur dioxide emission limit
.
The brick and tile industry mainly adopts wet desulfurization technologies such as sodium-alkali method and lime-gypsum method, and sulfur dioxide emissions are effectively controlled
.
Considering the revised flue gas baseline oxygen content and desulfurization technology control level, the sulfur dioxide emission limit is adjusted to 150mg/m3
.

The third is to supplement the relevant requirements of the monitoring and analysis method standards
.
In recent years, our ministry has issued and implemented a number of fixed-source air pollutant monitoring and analysis method standards, many of which are applicable to GB 29620-2013
.
To this end, the provisions of "the current national pollutant monitoring method standards and the national pollutant monitoring method standards released after the implementation of this amendment sheet, if the applicability meets the requirements, are also applicable to the determination of the corresponding pollutants in this standard" have been added
.

V.
About the amendments to the "Emission Standard of Pollutants for Inorganic Chemical Industry" (GB 31573-2015)

(1) The background and necessity of standard revision?

Since the implementation of the "Inorganic Chemical Industry Pollutant Emission Standard" (GB 31573-2015) (hereinafter referred to as "GB 31573-2015") in 2015, it has significantly reduced pollutant emissions, effectively prevented environmental risks, and promoted industrial production processes and pollution Advances in prevention and control technology have promoted the green development of the industry
.

During the implementation of the standard, the sodium silicate industry reported that its production process uses high-temperature furnaces, similar to glass production, with a higher level of thermal nitrogen oxide production, with an initial concentration of 2000-3000mg/m3, which is much higher than other inorganic chemical industries.
GB 31573-2015 does not well reflect the nitrogen oxide emission characteristics of the sodium silicate industry
.

The inorganic chemical industry defined in GB 31573-2015 is an industry that produces inorganic chemicals as raw materials from natural resources and industrial by-products
.
However, during the implementation of the standard, it was discovered that many companies currently use industrial products and other raw materials to produce inorganic chemicals in order to further increase the added value of inorganic chemicals.
The existing definitions do not fully cover them
.

In order to implement the requirements of precise pollution control, scientific pollution control, and pollution control according to law, and to increase the enthusiasm of enterprises in pollution control, the Ministry of Ecology and Environment has revised GB 31573-2015
.

(2) Compared with the original standard, what are the main changes in the amendment list?

One is to modify the definition of the inorganic chemical industry, supplementing the relevant terms and definitions of the sodium silicate industry
.
The definition of the inorganic chemical industry is adjusted to "the industry that produces inorganic acids, alkalis, salts, oxides, hydroxides, peroxides, and elemental chemical products", and no longer emphasizes the use of natural resources and industrial by-products as raw materials.
In the actual implementation, there is an ambiguity as to whether it belongs to the category of the inorganic chemical industry
.
At the same time, two terms and definitions of sodium silicate industry and pure oxygen combustion-supporting were added to enhance the practicability of sodium silicate emission control requirements
.

The second is to modify the nitrogen oxide emission limit of the sodium silicate industry
.
Through investigation and analysis, combined with the actual production level of sodium silicate industrial nitrogen oxides, denitrification technology, emission levels, and relevant domestic and foreign emission standards, the general emission limit of sodium silicate industrial nitrogen oxides was adjusted from 200mg/m3 to 400mg/m3 , The special emission limit was adjusted from 100mg/m3 to 300mg/m3, which better reflects the level of nitrogen oxide emission control in the sodium silicate industry in China
.

The third is to increase the benchmark exhaust gas for sodium silicate pure oxygen combustion
.
The pure oxygen combustion-supporting process can significantly reduce the amount of nitrogen oxides produced from the source, and the control effect of nitrogen oxides is equivalent to that of the terminal high-efficiency denitrification technology
.
However, the oxygen content of the flue gas after the pure oxygen combustion is higher, and the concentration conversion method of 8% of the baseline oxygen content cannot reflect its control effect
.
To this end, the "Emission Standard of Air Pollutants for the Flat Glass Industry" (GB 26453-2011) is used to calculate the flue gas concentration of the pure oxygen combustion process, and the conversion is carried out according to the benchmark exhaust volume
.

The fourth is to supplement the relevant requirements of the monitoring and analysis method standards
.
In recent years, our ministry has issued and implemented a number of fixed-source air pollutant monitoring and analysis method standards, many of which are applicable to GB 31573-2015
.
To this end, the provisions of "the current national pollutant monitoring method standards and the national pollutant monitoring method standards released after the implementation of this amendment sheet, if the applicability meets the requirements, are also applicable to the determination of the corresponding pollutants in this standard" have been added
.

6.
Regarding the amendments to the "Emission Standard of Air Pollutants for the Iron and Steel Sintering and Pelletizing Industry" (GB 28662—2012)

(1) The background and necessity of standard revision?

The steel series emission standards have been implemented for eight years.
The evaluation results of the implementation of the steel series emission standards show that since the implementation of the standards, they have played a role in controlling the emission of pollutants in the iron and steel industry, promoting the progress of pollution control technology in the iron and steel industry, and promoting the green and high-quality development of the iron and steel industry.
Important role
.

During the implementation of the standard, the iron and steel industry reported that the "Emission Standard of Air Pollutants for the Iron and Steel Sintering and Pelletizing Industry" (GB 28662—2012) did not specify the oxygen content of the sintering machine (pellet) roasting flue gas reference, resulting in different sintering machine roasting flue gas The level of pollutant control is difficult to assess fairly.
Some companies even dilute the emissions by aeration.
The oxygen content of the flue gas can reach 19% or even higher.
Compared with the sintering and roasting flue gas with an oxygen content of 16%, the same measured atmosphere If the pollutant concentration is converted into oxygen, the actual emission level may differ by 2.
5 times, which is not conducive to fairness among enterprises
.
In order to implement the national requirements for precise pollution control, scientific pollution control, and pollution control according to law, and to increase the enthusiasm of enterprises in pollution control, the Ministry of Ecology and Environment has revised GB 28662-2012
.

(2) Compared with the original standard, what are the main changes in the amendment list?

One is to supplement the baseline oxygen content of the roasting flue gas
.
The sintering machine and pellet shaft furnace are designed for roasting flue gas with an oxygen content of 14.
5% to 15.
5%.
As the equipment ages, the air leakage rate and oxygen content will increase
.
In order to make full use of the waste heat, the pellet grate rotary kiln and belt roaster are blown into the cooling section for air cooling, and the hot flue gas is returned to the rotary kiln and the drying section for recycling, resulting in a relatively high oxygen content in the roasting flue gas
.
Taking into account the differences in sintering and pelletizing processes, actual monitoring data, combined with the issued ultra-low emission transformation documents of the iron and steel industry and relevant domestic standards, the standard oxygen content of dry flue gas from the sintering machine and pellet shaft furnace roasting is 16%.
The basic oxygen content of the dry flue gas from the rotary kiln of the group chain grate machine and the belt type pellet roaster is 18%
.

The second is to improve the relevant requirements of the monitoring and analysis method standards
.
In recent years, our ministry has issued and implemented a number of fixed-source air pollutant monitoring and analysis method standards, many of which are applicable to GB 28662-2012
.
In addition, the GB 28662-2012 normative reference documents and the monitoring method standard number specify the year number, and the pollutant items in the standard cannot use the latest version of the monitoring method standard
.
For this reason, this revision deletes the normative reference documents and the year number of the monitoring method standard number in Table 5; and adds 5.
8 "The current national pollutant monitoring method standard and the national pollutant monitoring method standard issued after the implementation of this amendment.
" If the applicability meets the requirements, the same applies to the “determination of pollutants in this standard”
.

7.
Regarding the amendments to the "Emission Standard of Air Pollutants for the Steel Rolling Industry" (GB 28665—2012)

(1) The background and necessity of standard revision?

In the implementation of the standard, the iron and steel industry reported that due to conditions such as process characteristics, the oxygen content of some open-type steel rolling heat treatment furnaces was much higher than the baseline oxygen content specified in the "Air Pollutant Emission Standard for the Steel Rolling Industry" (GB 28665-2012), resulting in It is difficult for enterprises to meet the standards, and they cannot fully achieve ultra-low emissions, which affects the enthusiasm of corporate pollution control
.
In order to make the standards more scientific, in line with actual conditions, and convenient for supervision, the Ministry of Ecology and Environment has revised GB 28665-2012
.

(2) Compared with the original standard, what are the main changes in the amendment list?

One is to modify the definition of heat treatment furnace
.
The steel industry usually divides the "heat treatment furnace" in GB 28665-2012 into two categories: "heating furnace" and "other heat treatment furnace"
.
The heating furnace does not change the internal structure of iron and steel materials and the emissions account for more than 90% of the heat treatment furnace.
Other heat treatment furnaces change the surface or internal structure and performance of the iron and steel materials, and the emissions are relatively small
.
In order to make the standard more scientific, it is necessary to classify and manage the two types of furnaces
.
Combining the general classification of the industry, the proportion of heat treatment furnaces, process characteristics, etc.
, the "heat treatment furnace" in GB 28665-2012 is defined as "heating steel materials to rolling temperature, or heating to process temperature in a specific atmosphere and passing Different heat preservation and cooling methods to change the surface or internal structure of thermal equipment, including heating furnaces, and annealing furnaces, quenching furnaces, normalizing furnaces, tempering furnaces, solution furnaces, aging furnaces, quenching and tempering furnaces and other heat treatment furnaces
.
"

The second is to modify the baseline oxygen content and emission limits of other heat treatment furnaces
.
After investigation and analysis, there is a big difference in oxygen content between heating furnaces and other heat treatment furnaces
.
In consideration of the pollutant generation and emission levels of heating furnaces and other heat treatment furnaces of steel rolling enterprises, in order to make the standards more realistic, the baseline oxygen content of heating furnaces remains unchanged at 8%, and the baseline oxygen content of other heat treatment furnaces is adjusted from 8% to 15%
.
Considering the revised baseline oxygen content and feasible technology of flue gas from other heat treatment furnaces, the SO2 and NOx emission limits of other heat treatment furnaces are adjusted to 100mg/m3 and 200mg/m3
.

The third is to improve the relevant requirements of the monitoring and analysis method standards
.
In recent years, our ministry has issued and implemented a number of fixed-source air pollutant monitoring and analysis method standards, many of which are applicable to GB 28665-2012
.
In addition, the GB 28665-2012 normative references and the monitoring method standard number specify the year number, and the pollutant items in the standard cannot use the latest version of the monitoring method standard
.
For this reason, this revision deletes the normative reference documents and the year number of the monitoring method standard number in Table 5; and adds 5.
8 "The current national pollutant monitoring method standard and the national pollutant monitoring method standard issued after the implementation of this amendment.
" If the applicability meets the requirements, the same applies to the “determination of pollutants in this standard”
.

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