Clarification and fibre recovery from paper machine white water for water reuse and fibre recovery.
Pulp and paper wastewater treatment for paper & board mills. Fibre recovery, whitening and effluent management.
Pulp and paper wastewater treatment for Fibre recovery. Fibre recovery, whitening and effluent management.
Redirecting to our Pulp & Paper Mills industry page with effluent treatment, Fibre recovery, and whitewater solutions.
Pulp and paper wastewater treatment for recycled paper mills.
Paper machine white water contains fibres, fines, fillers, and dissolved organics. This water is typically recirculated, but excess must be treated for discharge or further processing. Effective treatment enables water reuse and fibre recovery.
White water contains short fibres and fines that can be recovered and returned to the stock preparation system, reducing raw material costs.
Recovery: 0.5-2% fibre
Calcium carbonate, clay, and other fillers along with sizing agents and dyes create treatment challenges requiring specialised processes.
Content: 1-5% solids
Dissolved and colloidal substances (DCS) including hemicellulose, lignin, and extractives affect water quality and must be managed.
Challenge: COD 500-2000 mg/L
Excess white water must be treated to maintain mill water balance and prevent buildup of dissolved and suspended solids.
Goal: 90%+ water reuse
Our whitewater treatment systems include dissolved air flotation (DAF) for fibre and solids removal, and clarification for water polishing. These systems produce clean water for reuse while recovering valuable fibre.
Dissolved air flotation effectively removes fibres, fines, and fillers from white water with high capture efficiency and low energy consumption.
Removal: >95% TSS
High-rate clarification for white water polishing, achieving low suspended solids in a compact footprint ideal for mill environments.
Capacity: 25 m³/m²/h
Static curved screens provide primary fibre recovery with no moving parts, offering simple and reliable operation for mill applications.
Slot: 0.25-2 mm
Automatic backwash filtration for final polishing of white water, protecting downstream equipment and ensuring consistent water quality.
Filtration: 50-500 micron
Mechanical dewatering of recovered fibre sludge to 18-22% dry solids, reducing volume for return to stock preparation or disposal.
Cake: 18-22% solids
Integrated automation with mill DCS for seamless operation, real-time monitoring, and optimised chemical dosing control.
Feature: DCS integration
Treated whitewater can be reused in stock preparation, cleaning, and other mill applications. This reduces freshwater consumption, lowers effluent volumes, and supports sustainability goals.
Closed-loop white water systems can reduce freshwater intake by 70-90%, significantly lowering water requirements and environmental impact.
Saving: 70-90% water
Recovering fibres from white water can return 0.5-2% of production volume to the process, providing significant raw material benefits.
Value: -200k/year
Minimising white water discharge reduces effluent treatment loads and helps meet environmental discharge permits.
Reduction: 60-80% volume
Water reuse supports corporate sustainability initiatives and helps achieve certifications like EU Ecolabel and FSC chain of custody.
Benefit: Green credentials
Explore our complete range of pulp and paper water treatment solutions.
Systems for recovering valuable fibres from mill process water streams.
Explore Pulp Fibre RecoveryClarification systems for mill wastewater discharge compliance.
Explore Effluent ClarificationPre-engineered systems for rapid deployment and mill upgrades.
Explore Containerised SystemsOur experts can design a system tailored to your specific requirements.
Our expertise spans multiple industries with sector-specific water treatment solutions.