High-rate clarification for final effluent treatment to meet discharge requirements and enable water reuse.
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.
Treat paper machine white water for Fibre recovery and suspended solids reduction.
Redirecting to our Pulp & Paper Mills industry page with effluent treatment, Fibre recovery, and whitewater solutions.
Pulp and paper mill effluent contains suspended solids, fibres, and organic matter that must be removed before discharge
Every system is designed for your specific wastewater characteristics, flow profile, and effluent targets. No off-the-shelf assumptions — just validated process engineering.
Equipment selected from manufacturers with proven field performance in similar applications. Duty/standby arrangements and robust construction minimise unplanned downtime.
Design targets are set at 50-70% of consent limits, providing a safety margin for process variation. Continuous monitoring and automated reporting demonstrate compliance.
Intuitive controls, clear instrumentation, and accessible maintenance points reduce training requirements. Standard operating procedures written in plain language.
Direct access to our process engineers for operational advice, troubleshooting, and optimisation. Remote diagnostics and rapid on-site response keep your plant running.
Materials certified to EN 10204 3.1, welding procedures qualified to ISO 9606, and pressure testing to 1.5x design pressure. Full traceability from mill to commissioning.
Our LAMELLA separators provide high-rate clarification with 70% smaller footprint than conventional clarifiers. These sy
Activated carbon removes contaminants through physical adsorption and chemical reaction. Micropore structure provides enormous surface area for contaminant binding.
Media, membrane, and depth filtration remove particles by size exclusion, adsorption, and interception. Selection depends on particle size distribution and effluent quality target.
Microorganisms convert organic pollutants to CO2, water, and biomass under aerobic conditions. Anaerobic processes produce methane while removing COD in the absence of oxygen.
Hydroxyl radicals generated by ozone, UV, or Fenton chemistry break down refractory organics that resist biological treatment. Effective for pharmaceuticals, pesticides, and colour.
Coagulants and flocculants aggregate fine particles into settleable flocs. Iron and aluminium salts precipitate phosphate while polymers bridge particles for efficient separation.
UV, chlorine, and ozone each have advantages for pathogen control. UV is chemical-free, chlorine provides residual protection, and ozone addresses colour and taste simultaneously.
Effluent clarification systems consistently achieve 90-99% suspended solids removal, ensuring compliance with discharge
Achieves 85-98% COD reduction depending on process selection and influent characteristics. Anaerobic pre-treatment followed by aerobic polishing delivers the highest removal rates.
Total suspended solids reduced to below 10-30 mg/L through coagulation, flocculation, and physical separation. Lamella and DAF clarification provide consistent solids removal.
Fat, oil, and grease reduced to below 5-15 mg/L using CPI separators, DAF, and biological degradation. Pre-treatment protects downstream processes from fouling.
Ammonia-N below 5-10 mg/L and total phosphorus below 1-2 mg/L achieved through biological nitrification-denitrification and chemical precipitation with ferric salts.
Effluent pH maintained within 6.5-8.5 through automated acid/alkali dosing with inline probe control. Buffer tanks prevent pH shock to receiving waters.
Systems designed for peak flows of 1.5-3x average daily flow with hydraulic capacity to handle diurnal variation without bypass or loss of treatment quality.
Pulp and paper mill effluent contains lignin, cellulose fibres, extractives, bleaching chemicals, and high COD loads. Treatment must address colour, toxicity from chlorinated organics (AOX), and high solids content while enabling water recycling to reduce freshwater intake. Our integrated solutions combine primary fibre recovery, biological treatment, and advanced oxidation for colour and AOX removal.
Save-all systems and DAF units recover valuable fibre for return to the paper machine.
Closed-loop water circuits reduce freshwater consumption by 60-90% in modern mills.
Advanced oxidation and anaerobic biological processes reduce chlorinated organics below discharge limits.
Specialised coagulants and ozone treatment decolourise effluent for receiving water protection.
| COD Range | 1,500 – 15,000 mg/L (kraft bleaching at higher end) |
| BOD Loading | 300 – 2,500 mg/L |
| TSS Loading | 100 – 1,500 mg/L (fibre loss dependent) |
| AOX Loading | Up to 15 kg AOX/tonne pulp (ECF bleaching) |
| pH Range | 6.0 – 10.0 (alkaline extraction stage influence) |
| Temperature | 30 – 60°C (hot process water) |
| Water Reuse Target | 10 – 50 m³/tonne paper (modern closed circuits) |
| Sludge Yield | 0.3 – 0.6 kg DS/kg COD removed |
EU BREF for pulp and paper production guides Best Available Technique selection.
Effluent quality supports good ecological status of receiving waters.
Evaporation and crystallisation options for mills targeting complete water recycling.
Our experts can design a system tailored to your specific requirements.
Our expertise spans multiple industries with sector-specific water treatment solutions.