Pulp & paper

Cost-effective recycling

With water used in nearly every step of the manufacturing processes, pulp and paper mills produce large volumes of wastewater and residual sludge waste, presenting several issues in relation to wastewater treatment, discharge and sludge disposal. However, increasingly advanced treatment technologies, including innovative strategies geared towards water reuse and resource recovery, present viable solutions for P&P manufacturers in terms of wastewater and solid waste management. With high flow rates and large volumes of water, optimising the water cycle of your paper mill is key to lowering your production costs and improving reliability.

Contaminants inherent to P&P waste streams include effluent solids, sediments, adsorbable organic halides (AOX), chlorinated organic compounds, and chemical oxygen demand (COD) and biological oxygen demand (BOD) contaminants.

According to industry experts, approximately 85% of the water used in the P&P industry is used as process water, resulting in relatively large quantities of contaminated water and necessitating the use of onsite wastewater treatment solutions. Treatment options include primary treatment such as clarification to remove solids and particulate matter, and secondary biological treatment processes for removing biodegradable organic matter and decreasing the effluent toxicity.

IC enables recycling of water within the P&P industry. This is an increasingly common solution because it allows facilities to reuse water and recover excess pulp fibres that have escaped in the wastewater, providing the industry with a high economic incentive to recycle its waste streams. Ionic copper can aid in this recycling process by reducing the strain on filtration equipment and increasing their life span. Using IC instead of chlorine, for instance, eliminates long-term residual organic matter build up and makes the wastewater less caustic to the filtration membranes.

Tighter water quality requirements, rising wastewater discharge costs, and increasing limitations on water withdrawal rights. These factors, along with corporate responsibility initiatives to reduce water usage, are motivating P&P plant operators to switch from conventional water treatment to membrane systems. IC can help reduce sludge volumes and improve sludge conditioning, opening a whole range of reuse/disposal possibilities to benefit your operation. Through guaranteeing discharge compliance and water footprint optimisation, we help ensure your plant’s future production.

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