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Printing and packaging occupational organic waste gas treatment:

1. Q: What are the primary components and hazards of VOCs in printed exhaust gases?

A: Common VOCs: benzene, petroleum hydrocarbons, organic chlorides, Freon series, organic ketones, amines, alcohols, ethers, esters, acids, etc. Common in the printing industry: esters, alcohols, ketones, benzene, etc.

Exhaust gas treatment

VOCs are key precursors of PM2.5 and O3, which contribute greatly to summer ozone and fine particulate pollution in autumn and winter. Some VOCs have odor and toxicity, which seriously endanger human health.

2. Q: What are the origins of VOCs in printed packaging?

Printing exhaust gas

A: The use of solvent-based raw and auxiliary materials in printing and pre-press and post-press processes, including organic solvents such as inks, fountain solutions, cleaning agents, adhesives, coating solutions, and diluents.

3. Q: What are the pollution sources in the production link?

Answer: The printing waste gas treatment discharge node is mainly processed in the process of printing, compounding, coating, glazing and drying, and can be processed through organized collection and discharge; the discharge in the process of warehousing, blending and logistics is unorganized and the demand is carried out. A certain sealing treatment.

4. Q: What are the VOCs emission standards?

A: According to the "Printing Industry Air Pollutant Emission Standards" (DB31/872-2015), it will be implemented on March 1, 2015. The existing enterprises will be implemented as of July 1, 2016 (the following figure is the Shanghai standard) .

Exhaust emission standard

5. Q: What are the requirements for VOCs to handle the production environment?

A: The production site needs to be sealed and organized with intake and exhaust, and the waste gas is collected and centralized. Unorganized emissions are considered if the following three conditions are present:

1) Failure to work in a confined space or equipment in accordance with the rules;

2) not collecting and processing equipment in accordance with the rules of the equipment;

3) Other scenes that constitute exhaust gas, dust leakage, and escape.

6. Q: What are the VOCs handling skills?

Exhaust handling skills

A: Now, the first step is to carry out pollutant emission reduction; the production process control also has new skills, improve the recycling rate of materials, and reduce pollutant emissions; the source of defense is mainly the development of materials with low VOCs content, materials The characteristics and methods of use also require companies to get used to it.

7. Q: How do companies choose the appropriate handling plan?

Exhaust gas treatment process selection

A: The company chooses a plan that suits itself according to the production environment, production process and production scale. If the amount of VOCs generated by processes such as gravure and recombination is large, it is necessary to select a plan with strong processing capacity; if the production space is large, the exhaust gas collection equipment with large exhaust volume should be selected; the high production intensity of the equipment also requires strong selection and processing capability. Handle the plan.

8. Q: What should I pay attention to when reporting VOCs?

A: EIA documents and approvals, trial production (trial operation) and environmental protection facilities completion acceptance report and approval;

Sewage declaration materials;

Sewage permit (gradual approval and promulgation);

Operational procedures and operating accounts of pollution prevention facilities;

Distribution map of risk substance storage points in the plant area, distribution map of water, gas, sound and slag discharge points (storage points);

The industrial hazardous waste generation unit standardizes the archival materials.

9. Q: What conditions may face punishment?

A: If you don't cooperate with law enforcement, you may refuse to enforce the law; you will not get the pollutant discharge to discharge atmospheric pollutants according to law; the emission standards exceeding the air pollutants may exceed the atmospheric pollutant discharge total control indicators to discharge atmospheric pollutants; and the air pollution is discharged after avoiding supervision. Things. The air pollutant discharge port is not set according to the rules.

10. Q: How is the internal supervision system established?

Exhaust gas treatment

A: VOCs waste gas treatment is a condition for the future development of printing and packaging profession. It is necessary for enterprises to establish a set of prevention and handling mechanisms, formulate corresponding handling standards and emergency plans, and constitute document materials for inquiry training and implementation.

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Printing and packaging occupational organic waste gas treatment

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