Printing industry hazardous waste

â—† Photosensitive material waste

1. Developing a film using a developer, fixing a film with a fixer, and using a thinned (bleached) image produced by image reduction (bleaching) using potassium ferricyanide and thiosulfate, a film, and waste paper. (Dangerous characteristics are toxic)

2. Using developer for printing and developing, resist pattern development, and waste printing (definition) shadow liquid, film and waste paper produced by letterpress printing. (Dangerous characteristics are toxic)

â—† Chrome waste

3. Using chromic dichromate-containing colloidal organic solvents and adhesives for turbulent flow resist coating (resistive and photosensitive resists, etc.) and waste treatment sludge. (Dangerous characteristics are toxic)

4. Chromium compounds used for the chemical residue hardening of the resist and waste water treatment sludge. (Dangerous characteristics are toxic)

5, the use of chromic acid chrome plating tank residue, bath and wastewater treatment sludge. (Dangerous characteristics are toxic)

â—† Copper waste

6. Waste etching liquid and wastewater treatment sludge produced by copper etching using acid or ferric chloride. (Dangerous characteristics are toxic)

â—† Mercury-containing waste

7. Image thickening (physical precipitation) using developer and mercury compound, waste liquid and residue generated by developer and mercury ammonia chloride for image thickening (oxidation). (Dangerous characteristics are toxic)

â—† Lead-containing waste

8. Waste liquid produced from the plating of lead-tin alloy during the manufacture of printed circuit boards. (Dangerous characteristics are toxic)

â—† Waste Halogenated Organic Solvents

9. Use of organic solvents for rubber plate printing and cleaning of waste halogenated organic solvents produced by printing tools. (The hazardous characteristics are flammability and toxicity)

â—† Waste organic solvents

10. Use of organic solvents for rubber plate printing, and cleaning of waste organic solvents produced by printing tools. (The hazardous characteristics are flammability and toxicity)