Ultrafiltration

Colloidal substances, stickies and bacteria are among the main components that lead to runnability and efficiency losses in paper machine processes. Prevention of these reductions in performance can be achieved using a modular approach to whitewater treatment.

Valmet’s Ultrafiltration process is a solution for paper, board and tissue mills to produce colloid-free, bacteria-free, ultrapure water from white water. The main objectives are to reduce fresh water consumption, improve paper machine runnability, efficiency, and manage energy.

Key benefits include:

• Lower fresh water consumption
• Reduced chemical consumption
• Reduced slime formation
• Reduced need for biocide
• Reduced micro stickies
• Better runnability of paper machine