Odor Emission Standards for Pollutants
"Odor emission standards" is to implement the "People's Republic of China Air Pollution Control Act" to control the stench of pollutants to the atmosphere pollution, protect and improve the environment and the development.
This standard is formulated for the purpose of implementing the Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution, controlling the pollution of atmospheric pollutants by pollutants, and protecting and improving the environment.
1 Subject content and scope of application
This standard specifies the maximum emission limit of eight odor pollutants, the odor concentration limit of the compound odorant and the limit of the concentration of the non-organized emission source.
1.2 Scope of application
This standard is applicable to the discharge management of all odorous gas units and waste dumps in the country and the environmental impact assessment, design, final acceptance and discharge management of the construction projects.
2 reference standards
GB 3095 Atmospheric Environmental Quality Standard
GB 12348 Noise standard for boundary of industrial enterprises
Air quality - Determination of malodours - Three - point comparative odor - bag method GB / T
Air quality - Determination of trimethylamine - Gas chromatographic method GB / T
Air quality - Determination of toluene, xylenes, styrene - Gas chromatographic method GB / T
GB / T 14678 Air quality - Determination of hydrogen sulfide, methyl mercaptan, methyl sulfide, dimethyl disulfide - Gas chromatographic method
Air quality - Determination of ammonia - Sodium hypochlorite - salicylic acid spectrophotometric method GB / T
Air quality - Determination of carbon disulfide - Diethylamine spectrophotometric method GB / T
3.1 Odor pollutants
Refers to all stimulate the olfactory organ causing unpleasant and damage to the living environment of the gas substances.
3.2 odor concentration
Refers to the odor of gas (including odor) with odorless air to dilute, just to the odorless, the required dilution factor.
3.3 Unorganized emission sources
Means a source of exhaust with a venting or exhaust cylinder height of less than 15 m.
The standard value of the stench pollutants in this standard is divided into three levels.
4.1.1 Discharge into GB 3095 in the implementation of a class of district-level standards, a district shall not build a new sewage unit.
4.1.2 Class II standard of discharge into GB 3095 Class II.
4.1.3 discharge into GB 3095 three areas in the implementation of three standard.
4.2.1 Odor odor pollutant The plant boundary standard value is the limit value for the unorganized emission source.
June 1, 1994 from the project of the new, expansion, renovation and construction projects put into operation after the completion of the enterprise implementation of two, three standard corresponding standard value.
5.1 Odor emissions from discharge units (including spills and unorganized discharges), the maximum supervised value (including odor concentration) of the monitoring points (without other disturbing factors) at the boundary of the pollutant unit must be lower than or equal to the odor pollution Standard value of the plant sector.
5.2 Emissions units Emissions of odorous pollutants from the exhaust pipe (above 15m in height) must be less than or equal to the emission standard for odorous pollutants.
5.3 The discharge unit of the sewage discharge and distribution of odor pollutants and odor concentration must be lower than or equal to the stench pollutant factory boundary values.
6.1 Organized emission source monitoring
6.1.1 The minimum height of the exhaust cylinder shall not be less than 15 m.
6.1.2 The exhaust cylinders between the two heights listed in Table 2 shall be rounded to calculate the height of the exhaust cylinder. The height of the exhaust cartridges listed in Table 2 refers to the vertical height from the ground (zero ground) to the exhaust port.
6.1.3 Sampling point: The monitoring point of the organized emission source should be the outlet of odor into the atmosphere. It can also be sampled and monitored in the lower part of the horizontal exhaust channel and the exhaust pipe. The odor concentration can be measured or calculated Actual emissions. After treatment of pollution sources monitoring points located in the exhaust treatment unit, and should be set permanently marked.
6.1.4 sampling frequency of organized emission sources should be determined according to the production cycle monitoring frequency, the production cycle in less than 8h, every 2h collection time, the production cycle is greater than 8h, once every 4h collection, whichever is the maximum measured value.
6.2 Monitoring of unorganized emission sources
6.2.1 Sampling point
The monitoring sampling points of the plant boundary are set on the downwind side of the factory boundary or on the boundary line of the odor.
6.2.2 Sampling frequency
Continuous emission source separated by 2h mining time, were collected 4 times, whichever is the maximum measured value.
Intermittent source selection in the maximum odor sampling time, sample collection times of not less than 3 times, whichever is the maximum measured value.
6.3 Water area monitoring
The monitoring of the waters (including the sea, rivers, lakes, drains and drains) shall be based on the shoreline as the boundary of the plant boundary. The sampling points shall be set at the same sampling frequency as the unorganized emission sources.
Methods for determination of individual odorous pollutants and odor concentrations in signs.