May 19, 2021 | Daywey Chen
Yes, when compared to solvent-based ink, water-based ink emits much fewer VOCs into the air making it more eco-friendly. However, this doesn’t mean that during production one can just wash up the ink waste and simply let it go down the drain. The wastewater from water-based ink contains pigments, dynes, vehicles, auxiliary solvents, and additives that are harmful to the environment. Water-based ink is better, but it is not perfect. The wastewater needs to be treated before it can be discharged. In this article, we are going to explore two different wastewater treatments used in practice which are chemical treatment and electrolysis treatment.