Precision manufacturing with CNC machining, robotic welding, and millimetre tolerances. Stainless steel, duplex, and exotic alloy fabrication for equipment that lasts in the harshest wastewater environments.
CFD, P&ID, SCADA and commissioning for critical water treatment plants.
Plant layouts, piping isometrics and construction-ready engineering drawings.
Flow, mixing and thermal CFD across treatment and process equipment.
Full mechanical, physico-chemical, biological and sludge equipment range.
Not built to approximation. Built to specification.
Wastewater treatment equipment operates in chemically aggressive, thermally variable, and mechanically demanding environments for decades. The difference between equipment that endures and equipment that fails often comes down to fabrication quality: weld penetration, material grade, surface finish, and dimensional accuracy. At Reynolds & Bauhm, we fabricate to engineering drawing tolerances, not construction-site approximation. Every weld is qualified, every surface is specified, every dimension is verified.
Computer-numerical-controlled milling, turning, and drilling with 0.1 mm tolerances. Flanges, nozzles, and precision components are machined to drawing, not ground to fit.
Automated TIG and MIG welding with consistent penetration, heat input control, and distortion management. Weld procedures are qualified to ASME IX and EN ISO 15614.
Pickling, passivation, and electropolishing to specified surface roughness. Biological fouling resistance and corrosion protection are determined by surface quality.
The right material for your chemical environment
316L and 304 stainless steel for general wastewater applications. Excellent corrosion resistance to chlorides, organic acids, and mild alkalis. Standard material for most DAF units, clarifiers, and screens.
2205 and 2507 duplex for high-chloride environments, brackish water, and aggressive industrial effluents. Superior strength and corrosion resistance compared to austenitic grades.
904L and AL-6XN for extreme chloride environments, seawater applications, and high-temperature process streams where standard grades would suffer pitting or stress corrosion cracking.
Hastelloy C276 and B3 for strong acids, oxidising chlorides, and mixed chemical environments where even duplex steels would fail. Used in chemical plant and pharmaceutical effluent treatment.
Grade 2 titanium for seawater, chlorinated cooling water, and extreme pH applications. Exceptional corrosion resistance with the highest strength-to-weight ratio of any structural metal.
Fibre-reinforced plastic, PP, PVC, and PVDF for lightweight construction, chemical resistance, and cost-sensitive applications. Corrosion-proof alternatives to metallic construction.
This treatment stage is engineered to achieve specific contaminant removal targets while providing stable, predictable performance across variable inlet conditions. Design parameters are calculated from wastewater characterisation data, regulatory requirements, and site-specific constraints including footprint, energy availability, and operator capability.
Design validated by CFD modelling and pilot testing to confirm performance guarantees.
Equipment selected for 20-year design life with minimal wearing parts and easy access.
Automated dosing and feedback control minimise reagent consumption and sludge production.
Online monitoring and data logging demonstrate continuous consent compliance.
| Design Flow | 10 – 5,000 m³/h (application specific) |
| Inlet Variability | Designed for 1:3 peak-to-average flow ratio |
| Removal Efficiency | 85 – 99% depending on target contaminant |
| Hydraulic Retention | Calculated from kinetic constants and safety factors |
| Power Consumption | 0.5 – 5.0 kWh/100 m³ (process dependent) |
| Chemical Dose | Auto-controlled based on online analysers |
| Sludge Production | 0.2 – 1.5 kg DS/kg contaminant removed |
| Materials | SS304, SS316L, or carbon steel with coating |
No treatment stage operates in isolation. This process is designed to receive conditioned influent from upstream stages and deliver effluent quality suitable for downstream processes. Hydraulic and organic loading rates are balanced across the complete treatment train to prevent bottlenecking and ensure overall plant efficiency. Our engineers model the complete flowsheet to optimise Capital expenditure and Operating expenditure across the plant lifecycle.
Screening, equalisation, and pre-treatment protect this stage from damage and overload.
Effluent quality ensures downstream biology, filtration, or disinfection performs optimally.
Reject streams, filtrate, and centrate are routed back to appropriate upstream points.
Equipment specified for operational temperatures from -20°C to +60°C with appropriate insulation and heating options.
Material selection based on detailed water chemistry analysis. Cathodic protection and coating options for aggressive duties.
Equipment designed for 380-415V 50Hz, 460-480V 60Hz, and generator-backed installations for remote sites.
Compact vertical layouts, containerised skids, and modular expansion options for space-restricted installations.
Speak with our fabrication engineers to discuss material selection, dimensional tolerances, surface finish requirements, and welding specifications for your bespoke equipment.
Our expertise spans multiple industries with sector-specific water treatment solutions.