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.
Woven fabric dye house discharging 600 m3/day of reactive dye wastewater with colour 1,500 Pt-Co units, COD 3,200 mg/L, BOD 1,100 mg/L, and sulphide 45 mg/L. Must meet sewer discharge limits of colour <100 Pt-Co, COD <500 mg/L, and eliminate sulphide odour.
Step-by-step process configuration from raw wastewater to compliant discharge.
0.5 mm rotary screen removes fibre and lint. 18-hour equalization with automated pH adjustment to 7.0. Flow and load balancing between dyeing batches.
Ferric chloride (200 mg/L) and anionic PAM dosed via rapid mix and flocculation chambers. Colour reduced to 400 Pt-Co. Dye molecules destabilised and aggregated for flotation removal.
Dissolved air flotation removes coagulated dye particles as float sludge. Surface skimmer transfers coloured float to thickening tank. DAF effluent colour <150 Pt-Co, TSS <40 mg/L.
Ozone generator producing 1.5 kg O3/h contacts DAF effluent in 15-minute reaction column. Residual colour destroyed by direct ozone oxidation. Final colour <50 Pt-Co. Sulphide oxidised to sulphate eliminating odour.
Biological sand filter provides final COD polishing from 350 to 180 mg/L. Backwash wastewater returned to equalization. Effluent meets all sewer discharge parameters consistently.
The specific equipment selected for this application, sized for the flow rate and contaminant load.
Rectangular DAF, 35 m3/h, ferric/PAM dosing, colour-optimised flotation, automatic scraper.
View EquipmentCorona discharge, 1.5 kg O3/h, oxygen feed, ozone destructor, residual ozone monitor.
View EquipmentFerric chloride day tank, PAM make-up unit, dosing pumps, flow-paced control.
View EquipmentGravity sand filter, 1.5 m diameter, 6 m/h filtration rate, automatic backwash.
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.
Automated acid/alkali dosing for equalization and reaction pH control.
View EquipmentDiscover 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.