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.
Commercial truck wash facility using 150 m3/day of potable water for washing 120 heavy goods vehicles daily. Wash water contains road salts, detergents, oil, grease, mud, and hydrocarbons. Water costs increasing 12% annually. Target: 85% water recycling for wash reuse, with fresh water only for final rinse.
Step-by-step process configuration from raw wastewater to compliant discharge.
Wash bay water collected in 50 m3 sump with 2mm screen removing leaves, litter, and coarse debris. Three-compartment oil trap captures free oil and floating contaminants. Retention 30 minutes.
Alum (80 mg/L) and cationic polymer coagulate detergents, colloidal clay, and emulsified oils. DAF system removes floated contaminants. Effluent COD <200 mg/L, oil <5 mg/L. Sludge at 3% solids.
Compact MBBR with 55% carrier fill removes biodegradable detergents and organics. 8-hour HRT. Fine bubble aeration at 3 mg/L DO. Final COD <80 mg/L, BOD <20 mg/L. Nitrification achieved for ammonia removal.
Dual-media sand filter captures residual solids and biofilm fragments. UV-C reactor at 30 mJ/cm2 provides disinfection. Treated water stored in 100 m3 reuse tank. Turbidity <2 NTU, no odour.
Recycled water pumped to wash bays via variable speed booster. Fresh potable water blended at 15% for final rinse to prevent streaking. Annual water benefits 46,000 m3, project benefits 2.1 years on water cost alone.
The specific equipment selected for this application, sized for the flow rate and contaminant load.
Compact DAF 12 m3/h, alum/polymer dosing, auto scraper, road-salt compatible SS.
View EquipmentCompact biofilm reactor 30 m3, HDPE carriers, fine bubble aeration, 8h HRT.
View EquipmentDual-media gravity filter, 1.0 m diameter, auto backwash, turbidity monitor.
View EquipmentLow-pressure UV, 30 mJ/cm2, automatic wiper, intensity monitor, <100 CFU/100mL.
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.