Disposal of waste from the hottest printing indust

Treatment of printing industrial waste

key words: Waste joint treatment system printing industrial waste environmental protection waste treatment methods

modern printing industry is called "urban industry". At the time when the level of high molecular compounds in water toothpaste for national living is increasing, people are also gradually aware of the importance of environmental protection and the relationship between environmental protection and quality of life. Environmental protection in the printing industry has become a topic that people have studied and paid great attention to at present. China is vigorously pursuing the strategy of sustainable development, and it is imperative to promote the joint waste treatment system in the printing industry

first, the significance of environmental protection in the printing industry

China's accession to the WTO requires the expansion of product exports. In addition to product performance, green barriers established by western countries often become an important factor restricting China's product exports

green barriers are trade barriers formed by the mandatory and non mandatory commodity standards and regulations formulated by commodity importing countries and the conformity assessment of inspection commodities, so as to improve the technical requirements of new products, increase the difficulty of import, and finally achieve the purpose of restricting imports. It is mainly reflected in these aspects: green standards, green environmental signs, green packaging system, green health and quarantine system, green subsidies, etc. Thus, whether the printed matter is environmentally friendly will become another trade barrier

in order to help the printing industry solve the problem of environmental protection, China should actively promote the joint treatment system of printing waste, so that the printing industry can achieve a win-win situation in both environmental protection and economy, and then enhance the international competitiveness of the industry

the waste combined treatment system has a good intention and economic benefits, which is very helpful to reduce waste in the printing industry. However, due to various factors, at present, some printing enterprises in China seldom consider the interests between printed matter and environmental protection, while foreign printing developed areas have correspondingly established a waste common treatment system or joint treatment system, using the funds and resources owned by each manufacturer, or jointly investing in the construction or use of waste treatment plants to solve the problem of environmental protection and waste reduction and eliminate green barriers

second, the waste should be free of defects such as rust, damage or uneven joint treatment system

at present, people's awareness of urban environmental protection is constantly improving, and the requirements and regulations of environmental protection regulations issued by the state are becoming higher and higher. The printing industry gradually feels that the problem of dealing with these wastes in the printing industry is becoming more and more urgent. However, most of the printing enterprises in China are small and medium-sized enterprises, and many of them are located in urban areas. On the one hand, they are obviously insufficient in the willingness and ability to deal with pollution and prevention. On the other hand, there is a small amount of waste, and their own treatment ability is relatively weak. The application of waste combined treatment system in the waste reduction of printing industry can meet this demand

waste combined treatment system can be divided into joint treatment system and joint treatment system

1. The growing demand for air travel and the rise in fuel prices will ensure a common treatment system for the demand for newer and more efficient aircraft. Printing factories that produce similar waste will jointly invest in the establishment of enterprise treatment plants (yards) that will eventually be left behind to deal with printing industrial waste produced by enterprises

2. Joint treatment system: printing enterprises that produce similar wastes and enterprises with waste removal and treatment capacity in the society jointly invest in treatment plants (yards) to deal with printing industrial wastes

III. main pollution produced by printing enterprises

1. Impact of printing materials on the environment

① impact of papermaking on trees and environmental pollution; ② Non degradability of plastic substrate

2. Waste liquid treatment of chemical substances in plate making operation

3. Chemical waste gas treatment

① emission of volatile ink and adhesive; ② Waste gas emission during plastic substrate forming and processing

4. Printing machine operation noise and vibration

5. Post press processing waste recycling treatment

① binding cutting, shredded paper recycling and regeneration; ② Plastic products waste treatment, recycling and regeneration

6. shipping and transportation methods (transportation causes air pollution)

7. Air conditioning energy supply (printing workshop needs constant temperature and humidity environment, and the huge air conditioning system causes air pollution)

8. Ultraviolet light source produces ozone in production, laser Phototypesetting and computer application will also pollute the environment

at present, the waste of the printing industry mainly includes: waste paper, waste ink, waste ink tank, waste rag, waste plate, waste gas, waste chemical liquid, etc. There is an urgent need to establish a unified treatment method for these wastes

at present, most printing plants in China are concentrated in cities with relatively developed economies, and the cost of waste cleaning and treatment is very high. However, waste pollution to cities requires the printing industry to reduce waste and deal with it. This has created a dilemma for the printing industry. (to be continued)