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Pulp & Paper

The Pulp & Paper industry is among the most intensive industrial water users. Pulp & paper mills produce large volumes of wastewater and residual sludge. In these conditions, wastewater treatment, discharge, and sludge disposal (when it cannot be reused) are critical issues.
Contaminants are different depending on the process and the final product (tissue, cardboard, or special paper). They can include suspended solids (fibers, minerals, colloids), chlorinated organic compounds, dissolved solids, chemical oxygen demand (COD), and biological oxygen demand (BOD).
Water is essential and crucial for pulp & paper production. For this reason, water treatment packages for inlet water have to be reliable and respect all conditions.

Product Portfolio

Desalination & Water Treatment

Water at plant sites can often be drawn from seas, lakes, or rivers; in most cases, treatment is mandatory. Read more.

Deaerators

Removing dissolved gases (such as oxygen and carbon dioxide) from feed water is strictly necessary to preserve the boiler. Read more.

Demineralization

These processes are used to treat water for boiler feeding and steam production. Read more.

Wastewater Reuse and Zero Liquid Discharge

Reuse is now mandatory for all industries that aim to reduce environmental impact and increase sustainability. Read more.

Effluent Water Treatment

Options include solids and particulate separation by clarification, principally Flotation with a DAF system (Dissolved Air Flotation) and secondary biological treatment for removing biodegradable organic matter. Aerobic treatments can be carried out using different processes like MBR, MBBR, and Extended Aeration. The design of the best solution must take into account many issues (inlet/outlet effluent characteristics, available space, OPEX, and others). MBR is widely used when very high-quality water is required after the process. Read more.

Anaerobic Treatment

Anaerobic technology is a valid alternative to biodegradation in an aerobic environment. In such systems, longer carbon chains are degraded into methane as the basic constituent of biogas. This is especially important in the countries where alternative power production grants access to financial aid. Read more.