Acids are widely used in production processes such as etching, pickling, polishing, deburring, metal-raffination, passivation and activation, as well as ore digestion, leaching, nitration, sulfonation, neutralisation, catalysis, ion exchange and many others. There are different types of acids as hydrochloric acid, sulphuric acid, phosphoric acid, nitric acid, fluoric acid and mixtures of these.

In the production process they are taking up impurities as metal ions, metal complexes, organics and solid impurities. Polyfill Microns offers systems to remove these metals from the bath solution thereby enabling the bath to be recycled continuously. For critical conditions, we conduct laboratory and/or pilot studies before offering the system. Some of the systems being offered by Polyfill Microns is:

• Chromic Acid rinse & bath recycling.
• Chrome passivation bath recycling.
• Nickel Sulphate rinse & bath recycling.
• Hydrochloric acid and sulphuric acid pickling bath recycling.
• Anodizing bath recycling.
• Degreasing bath recycling.
• Yarn jet wash water recycling.
• Garage / Car wash water recycling.

Impurities can be removed using any one or combination of the following

• Ion Exchange Columns
• Membrane technology (RO / NF / Diffusion Dialysis)
• Chemical Treatment
• Physical separation