This is an illustrative scenario showing how Reynolds & Bauhm equipment can be configured for this application. Every site has unique requirements — contact us for a solution tailored to your specific wastewater characteristics.
Kraft pulp mill generating 3,500 m3/day of combined effluent with COD 3,800 mg/L, BOD 1,600 mg/L, TSS 1,500 mg/L, and colour 800 Pt-Co from bleaching sequences. Must meet discharge limits of COD <250 mg/L, BOD <30 mg/L, TSS <30 mg/L to receiving water body.
Step-by-step process configuration from raw wastewater to compliant discharge.
High-rate clarifier removes fibre and primary solids. Retention time 2.5 hours. Primary sludge at 4% solids pumped to dewatering. Effluent TSS reduced to 400 mg/L.
UASB reactor converts 65% of COD load to biogas at 37°C. HRT 12 hours. Biogas production 4,500 m3/day fuelling lime kiln. Effluent COD 1,300 mg/L. Alkalinity maintained with NaHCO3 dosing.
Two-stage aerobic treatment: activated sludge for BOD removal followed by MBBR for refractory COD. Total HRT 24 hours. Fine bubble aeration at 2.5 mg/L DO. COD reduced to 280 mg/L.
Coagulation with aluminium sulphate (120 mg/L) followed by DAF removes colour and residual solids. Ozonation provides final COD polishing and colour destruction to <50 Pt-Co.
Combined primary and secondary sludge thickened to 6% then dewatered via belt press to 20% solids. Sludge utilised for composting. Belt press operates 16 hours/day with automatic wash cycle.
The specific equipment selected for this application, sized for the flow rate and contaminant load.
Circular clarifier 24m diameter, scraper bridge, 2.5h HRT, primary sludge pump.
View EquipmentAnaerobic reactor 800 m3, 37°C, biogas collection, pH control, 65% COD removal.
View EquipmentRectangular DAF 150 m3/h, alum dosing, colour removal, automatic scraper and float pump.
View EquipmentRepresentative performance data based on typical operating conditions for this equipment configuration.
Explore the full range of equipment used in this and similar applications.
Discover how these treatment processes connect to form complete wastewater treatment solutions.
Reynolds & Bauhm follows a structured engineering methodology for every project. We begin with detailed wastewater characterisation, process selection based on contaminant profiles, pilot testing where required, and full-scale design with performance guarantees. Our multidisciplinary team of chemical, mechanical, and electrical engineers ensures seamless integration of process, mechanical, and control disciplines.
Comprehensive influent analysis including COD, BOD, TSS, heavy metals, pH, temperature, and flow profiling.
Process flow development with P&IDs, mass balances, and hydraulic modelling validated by CFD where appropriate.
On-site pilot trials validate performance guarantees under actual operating conditions before capital commitment.
FAT, SAT, performance trials, operator training, and handover documentation ensuring operational readiness.
| Pre-Treatment | Screening, grit removal, and flow equalisation |
| Primary Treatment | DAF or lamella clarification for solids and oil removal |
| Secondary Treatment | Biological oxidation (activated sludge, MBBR, or SBR) |
| Tertiary Treatment | Filtration, UV disinfection, or chemical polishing |
| Sludge Management | Thickening and dewatering via belt press or centrifuge |
| Control System | PLC with HMI touchscreen and optional SCADA integration |
| Chemical Dosing | Automated coagulant, flocculant, and pH correction |
| Materials | SS316L, duplex, or rubber-lined carbon steel |
85 – 98% chemical oxygen demand reduction depending on process configuration and influent variability.
90 – 99% suspended solids reduction through combined physical and biological treatment stages.
Tertiary treatment enables up to 80% water recycling for non-potable process applications.
Our engineers will adapt this equipment configuration to your specific wastewater analysis, flow rate, and discharge requirements.
Our expertise spans multiple industries with sector-specific water treatment solutions.