Does Zhejiang environmental inspection include the paper and printing industry?

Does Zhejiang environmental inspection include the paper and printing industry?

Hangzhou Datang Printing answers for you:

I. Scope of application

This guide is applicable to the printing of books, newspapers and periodicals (C23 1 1), the printing of books (C23 1 12), packaging and other printing (C23 12).

Second, the goal of remediation

Through pollution remediation, outstanding problems such as backward technology and equipment of volatile organic compounds (VOCs) pollution control in Ningbo, inefficient operation of pollution control facilities, lagging environmental management, and serious VOCs pollution in some areas and enterprises have been basically solved.

According to the Pollution Remediation Plan of Volatile Organic Pollutants in Zhejiang Province and the annual remediation targets of Zhejiang Environmental Protection Department and Ningbo Environmental Protection Bureau, the clean production level and VOCs pollution prevention and control level of enterprises have been significantly improved, VOCs emissions have been greatly reduced, and regional environmental quality has been significantly improved through the implementation of VOCs pollution remediation actions.

—— By the end of 20 16, the completion rate of VOCs treatment project in packaging and printing industry reached 30%, and a number of demonstration enterprises were cultivated.

—— By the end of 20 17, the completion rate of VOCs control projects in the packaging and printing industry reached 80%, and the VOCs pollution supervision system was further improved.

—— By the end of 20 18, the rectification of the packaging and printing industry had been completely completed, the level of clean production and VOCs pollution prevention and control in the industry had been significantly improved, a perfect best available technical guide for the packaging and printing industry had been formed, and the long-term management mechanism for VOCs pollution prevention and control had been effectively operated.

Third, the remediation requirements

1, source control

Advocate the use of environmentally friendly raw materials. Fully promote the use of one-component solvent-based inks. Encourage the use of ink, glue, cleaning agent and other environmentally friendly raw and auxiliary materials with low VOC content that have passed the certification of China environmental labeling products. Promote the use of water-based ink in the printing process, and encourage the use of ultraviolet (UV) light-cured ink in the iron printing and can-making industries. When cleaning the substrate and cleaning equipment, use a cleaner with low volatility and high boiling point (environmentally friendly car wash water or W/O cleaning emulsion, etc.). ) instead of gasoline and other cleaning solvents. Lithographic printing enterprises use fountain solution with no/low alcohol chemical solvent (alcohol content is not more than 5%).

2. Process control

(1) Standardize the storage of raw materials. The daily consumption of a single volatile substance is above 630L, so the substance should be stored in storage tanks and transported through pipelines. Class A liquids with boiling point lower than 45℃ should be stored in pressure storage tanks, and the fire prevention interval should be implemented according to relevant specifications; When the volatile medium with boiling point higher than 45℃ is stored in the fixed-roof storage tank, the temperature control of the storage tank and the waste gas recovery or pretreatment facilities at the top of the storage tank must be set up, and the gas phase space of the storage tank should be set up with nitrogen protection system. The waste gas discharged from the storage tank must be collected and treated up to the standard, and the closed loading and unloading system with balance pipe shall be used for loading and unloading. All other organic solvents not stored in the storage tank and raw and auxiliary materials containing organic solvents shall be sealed and stored. Hazardous chemicals shall comply with the relevant provisions of hazardous chemicals.

(2) Standardize the deployment and transportation of raw and auxiliary materials. The preparation of solvent-based ink (varnish or glue) and thinner should be completed in an independent closed room; Enterprises whose daily consumption of solvent-based ink is more than 630L in the ready-to-use state should adopt a centralized ink supply system. If there is no centralized ink supply system, the raw and auxiliary materials should be sealed in a closed container to shorten the transfer path.

(3) standardize the use and recycling of raw materials. All printing, laminating and glazing operations should be carried out in the closed space of an effective VOCs collection system as far as possible, and the operations such as inking, gluing and glazing without a centralized supply system should adopt a closed pumping supply system. A closed material recovery system should be established. After printing, laminating and glazing, all remaining ink (varnish or glue) and auxiliary materials containing VOCs should be sent back to the preparation room or storage room.

(4) Adopt advanced equipment and technology. Encourage enterprises to adopt closed production complete sets of devices. Promote the use of automatic ink scraper and automatic blanket cleaning device. Flexible packaging composite technology promotes solvent-free pre-coating film technology, and promotes solvent-free composite and co-extrusion composite technology in composite film production.

(5) Encourage enterprises to implement green printing, implement green printing standards and pass green printing certification.

3. Improve waste gas collection.

(1) All printing and packaging production process devices or areas that produce VOCs pollutants must be equipped with an effective exhaust gas collection system to reduce VOCs emission, mainly including the exhaust gas generated by mixing, ink painting, polishing, gluing and drying.

(2) Dry waste gas should be collected separately in principle.

(3) The production equipment such as inking, glazing and gluing should be sealed, and a slight negative pressure should be maintained in the sealed room. The production line/equipment and ventilation exhaust gas collection system should be sealed as a whole.

(4) The total waste gas collection efficiency of printing and packaging enterprises is not less than 85%.

(5) The collection and transportation of VOCs pollution gas shall conform to the requirements of Technical Guidelines for Air Pollution Control Engineering (HJ2000-20 10), and the gas gathering direction shall be consistent with the movement direction of polluted air flow, and the direction shall be marked on the pipeline.

4. Improve the level of governance

(1) In each process of waste gas preparation, inking, glazing, gluing and drying, the appropriate treatment process should be selected according to the characteristics of pollutants in waste gas, air volume and other parameters.

(2) The organic waste gas with high concentration and single solvent type, such as toluene and ethyl acetate solvent waste gas, discharged in the composite process of gravure printing and flexible packaging should be recovered by condensation or adsorption concentration condensation recovery method. In principle, equipment such as adsorption, concentration, condensation and recovery should be installed in the drying process to recover organic solvents.

(3) In the production line using solvent-based ink (varnish or glue), the dry waste gas that is difficult to recover should be treated by catalytic combustion alone. On the basis of ensuring safety and equipment conditions, direct combustion treatment can be considered by using air as oil/gas fuel drying and heating equipment, and the total purification efficiency of waste gas treatment facilities is not less than 90%.

(4) In the production line using solvent-based ink (varnish or glue), the waste gas such as mixing, inking, glazing and gluing that is difficult to recover should be treated by adsorption concentration heat storage combustion method or adsorption concentration catalytic combustion method; When the total amount of pollutants is small, the concentration is low, and the surrounding environment is insensitive, it can also be combined with integrated technologies of waste gas treatment such as activated carbon adsorption, low-temperature plasma and photocatalysis. Dry oxidation techniques such as low temperature plasma and photocatalysis should be used together with absorption techniques. The total purification efficiency of waste gas treatment facilities is not less than 75%.

(5) Properly and timely dispose of secondary pollutants. Waste water generated by waste gas treatment should be replaced and treated regularly; Waste filter cotton and waste adsorbent produced by replacement should be treated according to relevant management requirements to prevent secondary pollution.

(6) The exhaust gas inlet and exhaust pipes of pollution prevention facilities shall be provided with permanent sampling ports, and a gas parameter measuring and sampling fixture meeting the requirements of "HJ/T 1-92 gas parameter measuring and sampling fixture" shall be installed.

5. Strengthen supervision and management of environmental protection.

(1) Improve the environmental protection management system, including the operation management system of environmental protection facilities, regular maintenance system of waste gas treatment facilities, waste gas monitoring system and solvent recovery system.

(2) In order to implement the monitoring system, enterprises need to monitor the import and export of VOCs waste gas treatment facilities and unorganized monitoring at the factory boundary every year, in which the monitoring of treatment facilities is not less than 1 time every six months, and the unorganized monitoring at the factory boundary is not less than 1 time every year. The monitoring indicators should include the main characteristic pollutants and non-methane total hydrocarbons contained in raw materials, and the VOCs treatment efficiency should be calculated according to the monitoring parameters of the import and export of waste gas treatment facilities.

(3) Improve and strictly manage all kinds of accounts, including waste gas monitoring account, waste gas treatment facility operation account, raw material consumption account containing organic solvent (including usage, waste amount, destination and VOCs content), and waste gas treatment consumables consumption (adsorbents, catalysts, etc.). ) and changing and transferring accounts. The retention period of the ledger shall not be less than three years.

(4) Establish an abnormal working condition report management system, including project shutdown, waste gas treatment facilities shutdown, and sudden environmental accidents. The enterprise shall report to the local environmental protection department in time and put it on record.