Keywords: waste joint treatment system printing industrial waste environmental protection waste treatment method

The modern printing industry is called "urban industry." As people's living standards improve, people gradually realize the importance of environmental protection and the relationship between environmental protection and quality of life. Printing industry environmental protection issues have become the subject of current research and great attention. China is now vigorously promoting sustainable development strategies, and it is imperative to promote waste joint processing systems in the printing industry.

First, the significance of environmental protection in the printing industry

When China joins the WTO, it must expand its product exports. In addition to product performance, the green barriers that Western countries engage in have often become an important factor in restricting China’s product exports.

Green barriers are trade obstacles that are imposed by compulsory and non-compulsory commodity standards and regulations and the conformity assessment of inspection commodities formulated by commodity import countries, thereby increasing the technical requirements of new products, increasing the difficulty of import, and finally reaching the limit of imports. the goal of. It is mainly reflected in these areas: green standards, green environmental signs, green packaging systems, green health and quarantine systems, and green subsidies. From this, it can be seen whether the environmental protection of prints will be another trade obstacle.

In order to assist the printing industry in solving environmental problems, China should actively promote the joint processing system for printing waste, so that the printing industry can achieve a win-win situation in both environmental protection and economy, and thus enhance the international competitiveness of the industry.

The joint waste treatment system has a good intention and has economic benefits, which is of great help to the waste reduction of the printing industry. However, due to various factors, some printing companies in China currently seldom consider the relationship between printed matter and environmental protection. In foreign developed regions, a waste disposal system or a joint processing system has been established accordingly, using funds owned by various manufacturers and each other. Resources, or jointly funded the construction or use of waste treatment plants, to solve their environmental protection problems, eliminate green barriers.

Second, waste joint processing system

At present, people’s awareness of environmental protection in cities has been continuously improved, and the requirements and regulations for environmental protection laws and regulations promulgated by the state are getting higher and higher. The printing industry gradually feels that the problems of waste disposal in the printing industry are becoming more and more urgent. However, most of the printing companies in China are small and medium-sized enterprises, and many are located in urban areas. On the one hand, there is a clear lack of willingness and ability to deal with pollution and prevention and control. On the other hand, the amount of waste is small, and their capacity for processing is relatively weak. The application of the waste joint treatment system in the waste reduction of the printing industry can solve this kind of demand.

The waste joint treatment system can be divided into two types: a common treatment system and a joint treatment system.

1. In the joint processing system, a processing plant (field) is jointly invested and set up by a printing plant that produces the same kind of waste, and is responsible for processing the printing industry waste generated by the company.

2. The joint processing system is a joint venture of printing companies that produce similar types of waste and has a waste disposal capacity in the society, and jointly invests in processing plants (fields) to handle printing industrial waste.

Third, the main pollution produced by printing companies

1. Printing materials impact on the environment

1 Influence of papermaking on trees and environmental pollution; 2 Non-degradability of plastic substrates.

2. Platemaking Chemicals Waste Liquid Treatment

3. Chemical waste gas treatment

1 Emissions of volatile inks and adhesives; 2 Exhaust gas emissions during molding of plastic substrates.

4. Printing machine operation noise and vibration

5. Postpress processing waste recycling

1 binding cutting waste paper recycling; 2 plastic waste recycling recycling.

6. Shipment methods (transportation causes air pollution)

7. Air-conditioning energy supply (print shop needs a constant temperature and humidity environment, air pollution caused by a huge air-conditioning system)

8. UV light sources produce ozone during production, and laser photocopying and computer applications also pollute the environment.

At present, the wastes of the printing industry mainly include: waste paper, waste ink, waste ink tanks, waste rags, waste plates, waste gas, and waste chemical liquids. All these wastes urgently need to establish a unified approach to recycling.

At present, most of China's printing plants are concentrated in relatively economically developed cities, and the cost of waste disposal and disposal is high. However, waste pollution from cities also requires that the printing industry must reduce waste and must deal with it. This creates a dilemma for the printing industry. (to be continued)