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Mechanical Pre-Treatment

Reliable solids removal from wastewater streams. Screens, sand traps, and grit separators engineered for continuous duty with minimal operator intervention.

Since 2016
Global Delivery
Performance Guaranteed

Equipment by Application

Complete mechanical pre-treatment from coarse screening to fine grit removal.

Wastewater Screens

  • Static curved screens
  • Rotary drum screens (external & internal fed)
  • Vertical spiral screens
  • Spiral duct sieves
  • Screening presses

Remove coarse and fine solids from 0.25 mm to 50 mm. Designed for meat, dairy, brewery, and municipal applications.

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Sand Traps & Grit Separation

  • Autosep sand traps
  • Centrifugal sand separators
  • Aerated grit chambers
  • Vortex-type grit separators

Remove sand, grit, and mineral particles to protect downstream pumps, pipes, and treatment equipment.

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Screenings & Grit Handling

  • Screenings presses
  • Screw conveyors
  • Grit classifiers
  • Washing & compaction units

Reduce screenings volume by up to 70% and improve disposal logistics with integrated handling equipment.

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Detailed Product List

Static Curved Screen

Simple, reliable screening with no moving parts. Ideal for food processing and agricultural effluent.

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Rotary Drum Screen

Continuous drum filtration with internal or external feed configurations for high-capacity applications.

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Vertical Spiral Screen

Compact design with integrated compaction and transport for space-constrained installations.

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Autosep Sand Trap

High-efficiency sand and grit separation with automatic purge for municipal and industrial plants.

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Centrifugal Sand Separator

Cyclonic separation of dense particles without moving parts or consumables.

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Screenings Press

Compacts and dewaters screenings to reduce volume and transport rates.

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Design & Selection Support

CFD Screening Analysis

Validate approach velocity, bypass prevention, and flow distribution for optimal screen performance.

CFD Services

P&ID Integration

Complete piping and instrumentation diagrams for mechanical pre-treatment processes with bypass and redundancy.

P&ID Services

Pilot Screening Units

Containerised pilot screens for on-site validation of aperture size, throughput, and capture efficiency.

Pilot Testing

Process Fundamentals & Design

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.

Process Optimisation

Design validated by CFD modelling and pilot testing to confirm performance guarantees.

Mechanical Reliability

Equipment selected for 20-year design life with minimal wearing parts and easy access.

Chemical Efficiency

Automated dosing and feedback control minimise reagent consumption and sludge production.

Compliance Assurance

Online monitoring and data logging demonstrate continuous consent compliance.

Design Parameters

Design Flow10 – 5,000 m³/h (application specific)
Inlet VariabilityDesigned for 1:3 peak-to-average flow ratio
Removal Efficiency85 – 99% depending on target contaminant
Hydraulic RetentionCalculated from kinetic constants and safety factors
Power Consumption0.5 – 5.0 kWh/100 m³ (process dependent)
Chemical DoseAuto-controlled based on online analysers
Sludge Production0.2 – 1.5 kg DS/kg contaminant removed
MaterialsSS304, SS316L, or carbon steel with coating

Integration with Treatment Train

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.

Upstream Protection

Screening, equalisation, and pre-treatment protect this stage from damage and overload.

Downstream Conditioning

Effluent quality ensures downstream biology, filtration, or disinfection performs optimally.

Recycle Streams

Reject streams, filtrate, and centrate are routed back to appropriate upstream points.

Related Pages & Equipment

Equipment Catalogue

Browse our full range of water treatment equipment and systems.

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DAF Systems

Dissolved air flotation for solids and oil separation.

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Lamella Clarifiers

High-rate settling for primary and secondary clarification.

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Biological Treatment

Activated sludge, MBBR, and SBR systems for organic removal.

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Sludge Dewatering

Belt press, centrifuge, and screw press dewatering.

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Chemical Dosing

Automated coagulant, flocculant, and pH correction systems.

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Pilot Testing

Validate process performance with on-site pilot trials.

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Speak to Our Engineers

Request a consultation or quotation for your project.

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Site Off the Map?

Packaged, containerised, skid-mounted and research-station families engineered for sites with no road, no grid, no operator and no local supply chain.

Select the Right Pre-Treatment

Our engineers match screen aperture, sand trap geometry, and throughput to your specific solids loading and downstream process requirements.

API Separators — Engineering Deep-Dive

Stokes’-law sizing, API Publication 421 design methodology, rectangular API / CPI / TPI configurations and refinery-train integration.

Industries We Serve

Our expertise spans multiple industries with sector-specific water treatment solutions.