Effective Calcium Carbonate Control Using Aktiphos® 640

Background

This case study focuses on wastewater treatment at a packaging paper mill, specifically the use of an anaerobic reactor to convert organic matter into biogas. The mill produces various types of packaging paper, often using recycled fibers, which introduces higher levels of calcium carbonate into the process.

Objectives

• Ensure stable and continuous anaerobic reactor operation.
• Prevent excessive calcium carbonate precipitation on sludge pellets.
• Maintain high COD removal efficiency despite elevated calcium concentrations.
• Enable greater flexibility in using recycled fibers with higher calcium loads.
• Reduce operational risks and avoid unplanned shutdowns.
• Improve system reliability through adequate process control.