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Industrial exhaust gas treatment system is an indispensable equipment cluster in manufacturing, metallurgy, heavy industry, etc. The system ensures that emissions when released into the environment meet standards and regulations. QCVN 19:2009/BTNMT industrial emissions with dust and inorganic substances.
Industrial emissions are gases or vapors emitted from production processes or industrial activities. These are gases or vapors composed of many different components, including toxic gases such as:
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Vietnam emitted about 208 million tons of CO2 in 2018, of which the industry and energy sectors accounted for a high proportion.
Emissions from factories, power plants and other industrial facilities contain toxic substances such as SOx, NOx, CO, unwanted organic compounds and dust particles. These substances not only pollute the air but also cause serious health problems for humans and animals.
CO2, methane (CH4) and other emissions from industry contribute to the greenhouse effect, causing global warming and climate change. Changes in climate change can cause significant changes in the living environment and human life.
Industrial emissions can contain toxic compounds such as heavy metals, organic compounds and additives. When rainwater falls, it can trap these substances and eventually lead to water pollution.
Industrial emissions can affect land and water ecosystems, causing a decline in biodiversity and affecting the reproduction and development of species.
Toxic substances in industrial emissions can cause health problems such as respiratory problems, cardiovascular diseases, cancer and other problems related to human health.
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Industries and industrial parks in Vietnam in recent years are witnessing breakthroughs in both scale, quantity and quality. Accompanying this is a large amount of toxic emissions produced during the production process, the operation of machines and people. If this amount of emissions is not treated properly, it will greatly affect the human living environment. For businesses, meeting industrial emission standards discharged into the environment is not only a legal responsibility, but also a positive face of the business to the public and the media.
Responding to those needs, Eclim Vietnam Environment Joint Stock Company has researched and applied the most advanced technologies today to come up with an industrial exhaust gas treatment system to meet the problems of businesses. .
Industrial exhaust gas treatment system meets standards.
Industrial exhaust gas treatment systems are equipment used to treat pollutants generated during the production activities of factories, plants, etc. This ensures that gases are discharged The outside environment is clean, non-polluting and safe. Many components and devices will be used in the system. Coarse dust is often filtered by a Cyclone system or cloth bag vacuuming, followed by a polluted gas treatment tower.
Maintenance of industrial exhaust gas treatment systems.
Eclim Vietnam's exhaust gas treatment system is capable of handling many types of exhaust gases and polluting chemicals, while bringing emissions to meet safety standards QCVN 19:2009/BTNMT .
Maintenance of industrial exhaust gas treatment systems.
NATIONAL TECHNICAL REGULATIONS
QCVN 19:2009/BTNMT
ON INDUSTRIAL EMISSIONS FOR DUST AND INORGANIC SUBSTANCES
National Technical Regulation on Industrial Emission of Inorganic Substances and Dusts
Preface
QCVN 19: 2009/BTNMT was compiled by the Drafting Committee of National Technical Regulations on Air Quality , submitted by the General Department of Environment, Department of Science and Technology, and Department of Legal Affairs and issued under Circular No. 25/2009/TT-BTNMT dated November 16, 2009 of the Ministry of Natural Resources and Environment..
NATIONAL TECHNICAL REGULATIONS
ON INDUSTRIAL EMISSIONS FOR DUST AND INORGANIC SUBSTANCES
National Technical Regulation on Industrial Emission of Inorganic Substances and Dusts
1. GENERAL PROVISIONS
1.1. Scope
This regulation regulates the maximum allowable concentration of dust and inorganic substances in industrial emissions when emitted into the air environment.
1.2. Applicable subjects
This regulation applies to organizations and individuals involved in the emission of industrial exhaust gases containing dust and inorganic substances into the air environment.
Emissions of some specific industries and fields of activity are regulated separately.
1.3. Terminology explained
In this Regulation, the following terms are understood as follows:
1.3.1. Industrial exhaust gas is a mixture of material components emitted into the air environment from chimneys and exhaust pipes of industrial production, processing, business and service facilities.
1.3.2. Dust is small solid particles, usually particles with a diameter of less than 75 mm, that settle down due to their own weight but can still remain suspended for some time [according to TCVN 5966:2009 (ISO 4225-1994 )].
1.3.3. The standard cubic meter of exhaust gas (Nm 3 ) is the cubic meter of exhaust gas at a temperature of 25 0 C and an absolute pressure of 760 mm of mercury.
1.3.4. Kp is the exhaust flow coefficient corresponding to the total exhaust gas flow of industrial production, processing, business and service establishments .
1.3.5. Kv is the regional coefficient corresponding to the location of factories, production, processing, business, and industrial service facilities that generate emissions into the air environment.
1.3.6. P (m 3 /h) is the total exhaust gas flow of chimneys and exhaust pipes of industrial production, processing, business and service establishments.
2. TECHNICAL REGULATIONS
2.1. The maximum allowable concentration of dust and inorganic substances in industrial emissions is calculated according to the following formula:
Cmax = C x Kp x Kv
In there:
- Cmax is the maximum allowable concentration of dust and inorganic substances in industrial emissions, calculated in milligrams per cubic meter of standard exhaust gas (mg/Nm 3 );
- C is the concentration of dust and inorganic substances specified in section 2.2;
- Kp is the discharge coefficient of the discharge source specified in section 2.3;
- Kv is the regional coefficient specified in section 2.4.
2.2. The C concentration of dust and inorganic substances as the basis for calculating the maximum allowable concentration in industrial emissions is specified in Table 1 below:
Table 1 - C concentration of dust and inorganic substances as a basis for calculating the maximum allowable concentration in industrial emissions
|
TT |
Parameter |
C concentration (mg/Nm 3 ) |
|
|
A |
B |
||
|
first |
Total dust |
400 |
200 |
|
2 |
Dust contains silica |
50 |
50 |
|
3 |
Ammonia and ammonium compounds |
76 |
50 |
|
4 |
Antimony and compounds, calculated as Sb |
20 |
ten |
|
5 |
Arsenic and compounds, calculated as As |
20 |
ten |
|
6 |
Cadmium and compounds, calculated as Cd |
20 |
5 |
|
7 |
Lead and compounds, expressed as Pb |
ten |
5 |
|
8 |
Carbon oxide, CO |
1000 |
1000 |
|
9 |
Chlorine |
32 |
ten |
|
ten |
Copper and compounds, calculated as Cu |
20 |
ten |
|
11 |
Zinc and compounds, calculated as Zn |
30 |
30 |
|
twelfth |
Hydrochloric acid, HCl |
200 |
50 |
|
13 |
Fluorine, HF, or inorganic compounds of fluorine, expressed as HF |
50 |
20 |
|
14 |
Hydrogen sulfide, H 2 S |
7.5 |
7.5 |
|
15 |
Sulfur dioxide, SO 2 |
1500 |
500 |
|
16 |
Nitrous oxide, NO x (calculated as NO 2 ) |
1000 |
850 |
|
17 |
Nitrous oxide, NO x (chemical manufacturing facility), calculated as NO 2 |
2000 |
1000 |
|
18 |
H 2 SO 4 or SO 3 vapor , calculated as SO 3 |
100 |
50 |
|
19 |
HNO 3 vapor (other sources), calculated as NO 2 |
1000 |
500 |
In there:
- Column A stipulates the C concentration of dust and inorganic substances as a basis for calculating the maximum allowable concentration in industrial emissions for industrial production, processing, business and service establishments operating. before January 16, 2007 with application period until December 31, 2014;
- Column B specifies the C concentration of dust and inorganic substances as a basis for calculating the maximum allowable value in industrial emissions for:
+ Industrial production, processing, business and service establishments operating since January 16, 2007;
+ All industrial production, processing, business and service establishments with application period from January 1, 2015.
2.3. The waste flow coefficient Kp is specified in Table 2 below:
Table 2: Waste flow coefficient Kp
|
Waste flow rate (m 3 /h) |
Kp coefficient |
|
P ≤ 20,000 |
first |
|
20,000 < P ≤ 100,000 |
0.9 |
|
P>100,000 |
0.8 |
2.4. The regional coefficient Kv is specified in Table 3 below:
Table 3: Regional coefficient, area Kv
|
Zoning, area |
Coefficient Kv |
|
|
Type 1 |
Inner city of special type urban areas (1) and type I urban areas (1) ; special-use forests (2) ; Natural heritage, historical and cultural relics are ranked (3) ; industrial production, processing, business, service and other industrial activities with a distance of less than 02 km from the boundaries of these areas. |
0.6 |
|
Type 2 |
Inner city, urban area of urban areas of grades II, III, IV (1) ; suburban areas of special type urban areas and type I urban areas with distance to the inner city boundary greater than or equal to 02 km; industrial production, processing, business, service and other industrial activities with a distance of less than 02 km from the boundaries of these areas. |
0.8 |
|
Type 3 |
Industrial area; class V urban areas (1) ; suburban areas, urban areas of grade II, III, IV with distance to the inner city boundary greater than or equal to 02 km; industrial production, processing, business, service and other industrial activities with a distance to the boundaries of these areas of less than 02 km (4) . |
1.0 |
|
Type 4 |
Countryside |
1,2 |
|
Type 5 |
Mountainous countryside |
1.4 |
|
Note: (1) Urban areas are determined according to the provisions of Decree No. 42/2009/ND-CP dated May 7, 2009 of the Government on urban classification; (2) Special-use forests identified under the Law on Forest Protection and Development dated December 14, 2004 include: national parks; nature reserve; landscape protection area; scientific research and experiment forest; (3) Natural heritage, historical and cultural relics established and ranked by UNESCO, the Prime Minister or the managing ministry; (4) In case the emission source has a distance of less than 02 km from 02 regions or more, the regional coefficient Kv shall be applied to the region with the smallest coefficient; (5) The distance specified in Table 3 is calculated from the emission source. |
||
3. DETERMINATION METHOD
3.1. The method for determining the concentration of dust and inorganic substances in industrial emissions of industrial production, processing, business, service and other industrial activities is carried out according to the national standards below. This:
- TCVN 5977:2005 Stationary source emissions – Determination of dust value and flow in air ducts – Manual mass method;
- TCVN 6750:2005 Stationary source emissions – Determination of sulfur dioxide mass concentration – Ion gas chromatography method;
- TCVN 7172:2002 Stationary source emissions – Determination of nitrogen oxide mass concentration – Photometric method using naphtylenediamine;
- TCVN 7242:2003 Medical waste incinerator. Method for determining carbon monoxide (CO) concentration in exhaust gas;
- TCVN 7243:2003 Medical waste incinerator. Method for determining hydrofluoric acid (HF) concentration in exhaust gas;
- TCVN 7244:2003 Medical waste incinerator. Method for determining hydrochloric acid (HCl) concentration in exhaust gas;
3.2 . When there are no national standards to determine the concentration of inorganic substances in industrial emissions specified in this regulation, international standards with equivalent or higher accuracy shall be applied.
4. IMPLEMENTATION ORGANIZATION
4.1. This regulation replaces the application of Vietnam Standard TCVN 5939:2005 on Air Quality - Industrial emission standards for dust and inorganic substances issued together with Decision No. 22/2006/QD- MONRE dated December 18, 2006 of the Minister of Natural Resources and Environment on mandatory application of Vietnamese environmental standards.
4.2. State environmental management agencies are responsible for guiding, inspecting and supervising the implementation of this Regulation.
4.3. In case the national standards on determination methods referred to in Section 3.1 of this Regulation are amended, supplemented or replaced, the new standards shall apply.
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