GB 37822-2019Standard for Fugitive Emission of Volatile Organic Compounds (English PDF)

3.1 Volatile organic compounds (VOCs)

Organic compounds that participate in atmospheric photochemical reactions, or organic compounds determined in accordance with relevant provisions.

3.2 Total volatile organic compounds (TVOC)

Use the prescribed monitoring method to measure the individual VOCs in the exhaust gas; sum them together to obtain the total amount of VOCs; it shall be calculated by the mass concentration of the individual VOCs.

3.3 Non-methane hydrocarbons (NMHC)

Use the prescribed monitoring method, the total amount of gaseous organic compounds other than methane that the hydrogen flame ionization detector responds are measured by the mass concentration of carbon.

3.5 Closed/close

The state or operating method of the pollutant that does not come into contact with the ambient air, or is isolated from the ambient air through sealing materials and sealing equipment.

3.6 Closed space

A closed area or closed building formed by a complete enclosure structure to block the pollutants, workplaces, etc. from the surrounding space. In this closed area or closed building, except for the entry and exit of personnel, vehicles, equipment, and materials, as well as exhaust pipes and vents established by law, doors, windows, and other openings (holes) shall be kept closed at all times.

3.16 Existing facility

Industrial enterprises or production facilities that have been completed and put into operation before the implementation of this Standard, or whose environmental impact assessment documents have been approved or filed.

3.17 New facility

Since the date of implementation of this standard, the environmental impact assessment documents have been approved or filed for new, rebuilt and expanded industrial construction projects.

4.1 Start from July 1, 2019, for newly-built enterprises and from July 1, 2020 for existing

enterprises, the VOCs fugitive emission control shall be implemented in accordance with the provisions of this Standard.

5.1 Basic requirements

5.1.1 VOCs materials shall be stored in closed containers, packaging bags, storage

tanks, warehouses, and silos.

5.2 Volatile organic liquid storage tank

5.2.1 Storage tank control requirements

5.2.1.1 For the storage tanks that store the volatile organic liquid with true vapor

pressure >=76.6 kPa and tank volume >=75 m3, low pressure tanks, pressure tanks or other equivalent measures shall be adopted.

5.2.2 Special control requirements for storage tanks

5.2.2.1 For the storage tanks that store the volatile organic liquid with true vapor

pressure >= 76.6 kPa, low-pressure tanks, pressure tanks or other equivalent measures shall be adopted.

5.2.3 Requirements for operation and maintenance of the storage tank

5.2.3.1 Floating roof tank

5.2.3.2 Fixed roof tank

5.2.3.3 Maintenance and records

If the volatile organic liquid storage tank does not meet the requirements of 5.2.3.1 or 5.2.3.2, it shall be recorded and repaired within 90 days or shall be emptied out of use.

6.1 Basic requirements

6.1.1 Liquid VOCs materials shall be transported in closed pipelines. When transferring

liquid VOCs materials by non-pipeline transportation, airtight containers and tankers shall be used.

6.2 Loading of volatile organic liquids

6.2.1 Loading method

Volatile organic liquids shall be loaded at the bottom; if top immersion loading is used, the height from the discharge nozzle to the bottom of the groove (tank) shall be less than 200 mm.

6.2.2 Loading control requirements

If loading the materials with true vapor pressure >=27.6 kPa and the annual loading capacity of a single loading facility >=500 m3, the loading process shall meet one of the following requirements.

6.2.3 Special control requirements for loading

If loading the materials with true vapor pressure >=27.6 kPa and the annual loading capacity of a single loading facility >=500 m3, as well as loading the materials with true vapor pressure >=5.2 kPa but < 27.6 kPa and the annual loading capacity of a single loading facility >=2500 m3, the loading process shall meet one of the following requirements.

7.1 The chemical production process of involving VOCs materials

7.1.1 Material feeding and unloading

7.1.2 Chemical reaction

be discharged to the VOCs exhaust gas collection and treatment system.

7.1.4 Vacuum system

The vacuum system shall use a drying vacuum pump; and the vacuum exhaust gas shall be discharged to the VOCs exhaust gas collection and treatment system.

7.2 The use process of VOCs-containing products

7.2.1 For VOCs-containing products with a mass percentage of VOCs greater than or

equal to 10%, the use process shall adopt airtight equipment or operate in a closed space; and the exhaust gas should be discharged to the VOCs exhaust gas collection and treatment system. If it cannot be closed, local gas collection measures shall be taken; the exhaust gas shall be discharged to the VOCs exhaust gas collection and treatment system. The use process of VOCs-containing products includes but is not limited to the following operations.

7.2.2 The organic polymer products are used in the process of product production, in

the operations of mixing/milling, plasticizing/plasticization/melting, processing and molding (extrusion, injection, pressing, calendering, foaming, spinning, etc.), the airtight equipment or operation in a closed space shall be adopted.

7.3 Other requirements

7.3.1 The enterprise shall establish a ledger to record the name, usage amount, recycling amount, waste amount, whereabouts, and VOCs content of VOCs-containing raw and auxiliary materials and VOCs-containing products. The retention period of the ledger shall be no less than 3 years.

7.3.2 Ventilation production equipment, operating stations, workshops, etc. shall, on

the premise of complying with relevant provisions of safe production and occupational health, and in accordance with the requirements of industry operating regulations and standards, industrial building and clean plant ventilation design specifications, etc., adopt reasonable ventilation.

7.3.3 When the equipment and its pipelines containing VOCs materials are started, shut down (vehicle), inspected, repaired, and cleaned, the remaining materials shall be removed completely during the return stage and packed in a closed container. The exhaust gas during the return process shall be discharged to the VOCs exhaust gas collection and treatment system.

8.1 Management and control range

The number of sealing points of equipment and pipeline components carrying gaseous VOCs and liquid VOCs materials in the enterprise shall be >=2000; and leakage detection and repair shall be carried out. Equipment and pipeline components include.

8.2 Leak identification

If one of the following situations occurs, it is determined that a leakage has occurred.

8.4 Repairing of the leak source

8.4.1 When a leak is detected, the source of the leak shall be identified and repaired

in time. The first repair shall be carried out within 5 days from the date of discovery of the leak; and the repair shall be completed within 15 days from the date of discovery of the leak, except as specified in 8.4.2.

8.5 Recording requirements

Leak detection shall establish a ledger to record the detection time, detection instrument readings, repair time, adopted repair measures, and detection instrument readings after repair. The retention period of the ledger shall be no less than 3 years.

8.6 Other requirements

8.6.1 Under the conditions of process and safety permits, the gas released by the

pressure relief equipment shall be connected to the VOCs exhaust gas collection and treatment system.

9.1 Control requirements for wastewater liquid-level

9.1.1 Wastewater gathering and transportation system

For VOCs-containing wastewater discharged from the technology process, the gathering and transportation system shall meet one of the following requirements.

9.2 Special control requirements for wastewater liquid-level

9.2.1 Wastewater gathering and transportation system

For VOCs-containing wastewater discharged from the technology process, the gathering and transportation system shall meet one of the following requirements.

9.2.2 Wastewater storage and treatment facilities

If the detection concentration of VOCs at 100 mm above the open liquid level of the VOCs-containing wastewater storage and treatment facilities is >=100 µmol/mol, it shall meet one of the following requirements.

9.3 Requirements for circulating cooling water system

For the open circulating cooling water system, the total organic carbon (TOC)

concentration in the circulating cooling water flowing through the inlet and outlet of the heat exchanger is tested every 6 months.