Coal industry pollutant discharge standards

Coal industry emission standards

Emission Standard for Pollutants from Coal Industry

(release)

2006-09-01 Released 2006-10-01 Implementation

State Environmental Protection Administration

State Administration of Quality Supervision, Inspection and Quarantine

Foreword

In order to control the discharge of pollutants from raw coal mining, coal preparation and its coal storage and loading and unloading sites, safeguard human health, protect the ecological environment, and promote the sustainable development of the coal industry, according to the Environmental Protection Law of the People's Republic of China and the Water of the People's Republic of China The Pollution Prevention and Control Law, the Law of the People's Republic of China on Prevention and Control of Atmospheric Pollution, and the Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Wastes shall be formulated.

This standard mainly includes the following contents:

—— stipulate the emission limit of pollutants from coal mining wastewater and coal preparation wastewater;

- Provisions for atmospheric pollutant discharge limits and unorganized emission limits for the ground production systems of the coal industry.

- stipulate technical requirements for coal gangue yard management;

- stipulates the technical requirements for the use of coal mine water resources;

Since the new production line started on October 1, 2006, the existing production line has been implemented according to this standard since October 1, 2007. The GB 8978-1996 Integrated Wastewater Discharge Standard is no longer implemented; the coal industry The discharge of atmospheric pollutants shall be carried out in accordance with this standard, and GB 16297-1996 "Integrated Emission Standards for Air Pollutants" shall not be implemented. The control and management of pollutants in coal gangue dumps shall be carried out in accordance with the technical requirements stipulated in this standard.

This standard has the effect of enforcement in accordance with relevant laws.

This standard is the first release.

This standard was proposed by the Science and Technology Standards Department of the State Environmental Protection Administration.

This standard was drafted: Environmental Standards Institute of the State Environmental Protection Administration, China University of Mining and Technology (Beijing), Hangzhou Institute of Environmental Protection of the Coal Science Research Institute, Yankuang Group Co., Ltd., Tangshan Branch of the Coal Science Research Institute.

This standard was approved by the State Environmental Protection Administration on September 1, 2006.

This standard has been implemented since October 1, 2006.

This standard is explained by the State Environmental Protection Administration.

Coal industry pollutant discharge standards

1 Scope of application

This standard specifies the limits for the discharge of raw coal, coal-water pollutants, the limits of atmospheric pollutants emitted by coal-based production systems, and the technical requirements for pollutant control in coal gangue dumps, coal storage and loading and unloading sites.

This standard is applicable to the existing coal mines (including open pit mines), coal preparation plants and their associated coal gangue dumps, coal storage, loading and unloading site pollution prevention and management, as well as coal industry construction project environmental impact assessment, environmental protection facilities design, completed Environmental protection acceptance and pollution prevention and management after production.

This standard is applicable to the discharge of pollutants permitted by law, the location of newly established production lines and the management of existing production lines in special protection areas. According to Article 16 of the Law of the People's Republic of China on Prevention and Control of Atmospheric Pollution, Water Pollution of the People's Republic of China Articles 20 and 27 of the Law of Prevention and Control, Article 30 of the Law of the People's Republic of China on Marine Environmental Protection, and the relevant provisions of the Regulations on the Prevention and Control of Pollution from Drinking Water Source Protection Areas shall be implemented.

2 Normative references

The provisions of the following standards are incorporated into the provisions of this standard by reference to this standard and have the same effect as this standard. For undated references, the latest edition applies to this standard.

GB 3097 seawater quality standard

GB 3838 Surface Water Environmental Quality Standard

GB 5084 Farmland Irrigation Water Quality Standard

GB 5086.1~2 solid waste leaching toxicity leaching method

GB/T 6920 Determination of water pH value - Glass electrode method

GB/T 7466 Determination of total chromium in water

GB/T 7467 -- Determination of hexavalent chromium -- Diphenyl carbonyl hydrazide spectrophotometric method

GB/T 7468 Determination of total mercury in water - Cold atomic absorption spectrophotometric method

Determination GB / T 7470 Water quality dithizone spectrophotometry

Determination GB / T 7471 Water cadmium dithizone spectrophotometry

Determination GB / T 7472 zinc quality dithizone spectrophotometry

GB / T 7475 Water quality copper, zinc, lead, cadmium Atomic Absorption Spectrophotometry

GB/T 7484 Determination of fluoride in water quality - Ion selective electrode method

Determination of total arsenic GB / T 7485 Water diethyl dithiocarbamate silver spectrophotometry

GB/T 8970 Determination of air quality - sulphur dioxide - s.

GB/T 11901 Determination of suspended solids by weight method

GB / T 11911 Water quality iron, manganese flame atomic absorption spectrophotometry

GB/T 11914 Determination of chemical oxygen demand in water - Dichromate method

GB/T 15432 Determination of total suspended particulate matter in ambient air

GB/T 16157 Determination of particulate matter in fixed pollution source exhaust gas and sampling method of gaseous pollutants

Determination GB / T 16488 animal and vegetable oils and petroleum oil in water Infrared spectrophotometry

GB 18599 General industrial solid waste storage and disposal site pollution control standards

HJ/T 55 Technical Guidelines for the Monitoring of Unorganized Emissions of Air Pollutants

HJ/T 91 Surface Water and Wastewater Monitoring Technical Specifications

3 Terms and definitions

The following terms and definitions apply to this standard.

3.1 coal industry coal industry

Refers to the raw coal mining and coal preparation industry.

3.2 coal industry wastewater

Wastewater generated during coal mining and coal preparation, including coal mining wastewater and coal preparation wastewater.

3.3 Coal mining wastewater

During coal mining, coal mine water discharged into environmental water bodies or open coal mines drain water.

3.4 Acid mine drainage

Coal mining wastewater with a pH less than 6.0 or a total iron concentration greater than or equal to 10.0 mg/L before treatment.

3.5 high salinity coal mining wastewater mine drainage of high mineralization

Coal mining wastewater with a degree of mineralization (total inorganic salt content) greater than 1000 mg/L.

3.6 Coal preparation

Using physical, chemical and other methods to remove impurities from coal, the coal is divided into different quality and specification products according to the needs of the processing.

3.7 Coal preparation plant

Sorting coal to produce processing plants of different quality and specification products.

3.8 Coal preparation wastewater

In the coal slurry water treatment process of the coal preparation plant, the washing water cannot form a closed circuit and the part of the wastewater that needs to be discharged to the environment.

3.9 Air Pollutants Emission Concentration

Refers to the average concentration of pollutants in the exhaust pipe for 1 hour at a temperature of 273 K and a pressure of 101,325 Pa. The unit is:

Mg/m3 (standard) or mg/Nm3.

3.10 coal gangue coal slack

The rock that is mixed into the coal from the top, bottom plate or coal pinch in the coal production process and the washed stone discharged from the coal preparation plant.

3.11 coal gangue dumping waste heap

Sites and facilities for the accumulation of coal gangue.

3.12 Existing production line existing facility

Coal mines, open pit mines, coal preparation plants, and storage and loading and unloading sites that have been approved for commissioning or environmental impact reports have been completed before the date of implementation of this standard.

3.13 New (expanded, modified) construction line new facility

From the date of implementation of this standard, the environmental impact report has passed the examination and approval of new, expanded and changed coal mines, open pit mines, coal preparation plants, and their storage, loading and unloading sites.

4 Coal industry water pollutant emission limits and control requirements

4.1 Limits of toxic pollutant emissions from coal industrial wastewater

The concentration of toxic pollutants discharged from the coal industry (including existing and new (expanded, modified) coal mines and coal preparation plants) shall not exceed the limits specified in Table 1.

4.2 Coal mining wastewater discharge limit

The existing coal production line will implement the existing production line emission limits specified in Table 2 from October 1, 2007; the GB 8978-1996 Integrated Wastewater Discharge Standard will be implemented during the transition period. From January 1, 2009, the emission limits for new (expanded, modified) production lines as specified in Table 2 will be implemented.

The new (expanded, modified) construction coal production line shall implement the new (expansion, modification) construction line emission limit specified in Table 2 from October 1, 2006 on the implementation date of this standard.

4.3 Coal Preparation Wastewater Discharge Limit

The existing coal preparation plant will implement the existing production line emission limits stipulated in Table 3 from October 1, 2007; the GB 8978-1996 Integrated Wastewater Discharge Standard will be implemented during the transition period. Since January 1, 2009, closed-circuit circulation of waterways should be realized, and sporadic emissions should be subject to the emission limits of new (expanded, modified) production lines as specified in Table 3.

The new (expansion and modification) construction coal preparation plant shall, from the date of implementation of this standard, realize the closed circuit circulation of waterways, and the accidental emission limits shall be implemented for new (expanded or modified) production lines as specified in Table 3.

4.4 Technical requirements for water resources utilization in coal mining (including open pit mining)

4.4.1 For high salinity coal mining wastewater, in addition to the implementation of Table 2 limits, it should be further processed and comprehensively utilized according to actual conditions. When high-minerality coal mining wastewater is used for farmland irrigation, it should meet the limit requirements of GB 5084.

4.4.2 In the design of new coal mines, mine water should be selected as the production water source for coal washing, underground production water, fire water and greening water.

4.4.3 Construction of coal-fired power plants and low-calorific value fuel comprehensive utilization power plants should give priority to the selection of mine water as the water supply source.

4.4.4 For the construction and development of other industrial water projects, mine water should be used as the industrial water source. If the mine water that can be used is not properly and fully utilized, other surface water and groundwater sources should not be mined and used.

5 Limits and control requirements for atmospheric pollutant emissions from the ground production system of the coal industry

5.1 From October 1, 2007, the air pollutants in the exhaust pipe shall not exceed the limits specified in Table 4; GB 16297-1996 “Integrated Emission Standards for Air Pollutants” shall be implemented during the transition period. New (expanded, modified) construction lines, air pollutants in the exhaust pipe shall not exceed the limits specified in Table 4 from the date of implementation of this standard.

5.2 The height of the exhaust pipe of the dust removal equipment of the coal industry shall not be less than 15m.

5.3 Unorganized emission limits for coal industry workplaces

From October 1, 2007, the concentration of unorganized emission monitoring points of pollutants in coal industry workplaces shall not exceed the limits specified in Table 4. Prior to this transition period, GB 16297-1996 "Integrated Emission Standards for Air Pollutants" was still implemented. New (expanded, modified) construction lines, the concentration of unorganized emission monitoring points of particulate matter in the workplace shall not exceed the limits specified in Table 5 from the date of implementation of this standard.

6 Coal gangue dump site pollution control and other management regulations

6.1 Coal gangue should be concentrated and stacked, and each coal mine should set up a coal gangue stacking yard. The site selection of coal gangue stacking yards should meet the relevant requirements of GBl8599.

6.2 Coal gangue should be adapted to local conditions, comprehensive utilization, such as can be used to build roadbed, leveling industrial sites, sintering coal gangue bricks, filling subsidence areas, goafs, etc. Coal gangue dumping sites that are not suitable for use should be completed within three years after decommissioning, such as covering soil, compaction stabilization and greening.

6.3 The temporary storage yard of coal gangue discharged during the construction of the well shall not be used from the date of production. The temporary dumping site will be closed within one year after it is deactivated. Temporary dumping site closure and closure processing shall comply with the relevant requirements of GB l8599.

6.4 Coal gangue stacking yards should take effective measures to prevent spontaneous combustion. Coal gangue yards where spontaneous combustion has occurred should be extinguished in time.

6.5 Coal gangue yards shall be constructed with dykes, dams, retaining walls and other facilities. Drainage ditches and diversion channels shall be arranged around the yard to prevent precipitation runoff from entering the coal gangue stacking yard to avoid loss and collapse.

6.6 The leaching test shall be carried out in accordance with the method stipulated in GB 5086. The coal gangue belongs to the coal gangue stacking yard of Class II general industrial solid waste as defined in GB l8599, and technical measures against penetration shall be adopted.

6.7 During the use of open pit coal mines and dumps, the generation of dust should be suppressed by spraying water or chemicals regularly.

7 Monitoring

7.1 Water pollutant monitoring

7.1.1 The sampling point of coal industry wastewater shall be set at the discharge port of the wastewater treatment facility of the sewage unit (the toxic pollutants are sampled at the discharge port of the workshop or workshop treatment facility), and the mark shall be set according to the regulations. The sampling port should be equipped with a wastewater metering device, and it is advisable to set up an online monitoring device for wastewater.

7.1.2 Sampling frequency

For coal mining wastewater and coal preparation wastewater, each sampling should be carried out under normal production conditions, sampling once every 3 hours, and sampling at least 3 times per monitoring. Any pH measurement shall not exceed the limits specified in the standard, and other pollutant concentration emission limits shall be measured by means of the mean.

7.1.3 Monitoring frequency

Coal mining wastewater and coal preparation wastewater should be monitored once a month.

If the coal industry wastewater is found to exceed any of the toxic pollutant limit indicators listed in Table 1, the environmental protection administrative department of the people's government at or above the county level shall be reported and continuously monitored, and the monitoring frequency shall be at least once a month.

7.1.4 Supervised monitoring is carried out in accordance with HJ/T 91.

7.1.5 Water sample The medium-speed quantitative filter paper is used to remove the interference of coal powder in the water sample before the CODcr value is determined by the potassium dichromate method.

7.1.6 The method for determining the pollutants used in this standard is carried out according to Table 6.

7.2 Air pollutant monitoring

7.2.1 The number of sampling points of air pollutants in the exhaust pipe and the setting of the sampling point position shall be in accordance with GB/T 16157.

7.2.2 For routine monitoring of atmospheric pollutants, the working conditions during sampling should be normal. The sewage disposal unit and the implementation monitoring personnel shall not arbitrarily change the operating conditions at that time. The average is obtained by sampling for 1 h consecutively, or 4 or more samples are taken at equal time intervals within 1 h, and the average value is calculated.

The working condition requirements and sampling time of environmental protection completion acceptance monitoring of construction projects shall be implemented in accordance with the monitoring methods and specifications for completion inspection of environmental protection facilities of construction projects formulated by the national environmental protection department.

7.2.3 Unorganized emissions monitoring is carried out in accordance with HJ/T 55.

7.2.4 The method for determination of particulate matter is GB/T 15432; the method for determination of sulfur dioxide is GB/T 8970.

7.2 Air pollutant monitoring

7.2.1 The number of sampling points of air pollutants in the exhaust pipe and the setting of the sampling point position shall be in accordance with GB/T 16157.

7.2.2 For routine monitoring of atmospheric pollutants, the working conditions during sampling should be normal. The sewage disposal unit and the implementation monitoring personnel shall not arbitrarily change the operating conditions at that time. The average is obtained by sampling for 1 h consecutively, or 4 or more samples are taken at equal time intervals within 1 h, and the average value is calculated.

The working condition requirements and sampling time of environmental protection completion acceptance monitoring of construction projects shall be implemented in accordance with the monitoring methods and specifications for completion inspection of environmental protection facilities of construction projects formulated by the national environmental protection department.

7.2.3 Unorganized emissions monitoring is carried out in accordance with HJ/T 55.

7.2.4 The method for determination of particulate matter is GB/T 15432; the method for determination of sulfur dioxide is GB/T 8970.

8 Standard Implementation Supervision

8.1 This standard shall be implemented as of October 1, 2006.

8.2 This standard is supervised and implemented by the competent department of environmental protection administrative protection of the people's government at or above the county level.

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