Engineering Case Studies
Illustrative engineering studies demonstrating our approach to environmental treatment challenges.
Industrial Effluent Treatment — Selecting a Treatment Train
Project Challenge
An industrial facility generating mixed chemical effluent required a treatment system capable of meeting discharge standards while accommodating variable influent characteristics.
Design Considerations
- Influent characterisation and variability analysis
- Biological vs. physico-chemical treatment assessment
- Sludge generation and handling requirements
- Discharge standard compliance pathway
Selected Treatment Approach
A multi-stage treatment train was evaluated comprising equalisation, pH adjustment, coagulation-flocculation, MBBR-based biological treatment, secondary clarification and tertiary filtration.
Verification Status
Conceptual design stage — pending detailed engineering and site-specific validation.
Containerised Sewage Treatment — Modular STP Concept
Project Challenge
A facility with limited available space and accelerated timelines required a sewage treatment solution that could be deployed without extensive civil construction.
Design Considerations
- Available footprint and access constraints
- Design flow and peak-flow conditions
- Treated water reuse feasibility
- Transport and crane access requirements
Selected Treatment Approach
A containerised SBR-based STP configuration was assessed, incorporating pre-assembled biological treatment, clarification and disinfection within standard ISO containers.
Verification Status
Feasibility assessment complete — detailed design subject to site survey and geotechnical data.
Industrial Water Recycling — Reducing Freshwater Demand
Project Challenge
An industrial operation sought to reduce its freshwater consumption by evaluating opportunities to treat and reuse process wastewater and cooling-tower blowdown.
Design Considerations
- Wastewater quality and reuse-quality requirements
- Membrane fouling and pre-treatment needs
- Concentrate management options
- Economic viability and payback assessment
Selected Treatment Approach
A tertiary treatment and UF/RO configuration was evaluated, with reject management through concentrate reduction and controlled discharge.
Verification Status
Assessment in progress — water balance and treatment trial data being compiled.
Multi-Stage Chemical Fume Scrubbing
Project Challenge
A chemical manufacturing process generating a complex gas stream containing both acidic (HCl, SO₂) and alkaline (NH₃) components required a treatment system to meet stack emission limits.
Design Considerations
- Gas composition and concentration ranges
- Temperature and moisture conditions
- Chemical compatibility of scrubbing media
- Pressure-drop constraints and fan selection
Selected Treatment Approach
A two-stage packed-bed scrubber system was conceptualised: an acidic first stage (caustic scrubbing) followed by an acid-wash second stage for ammonia removal, with mist elimination.
Verification Status
Conceptual treatment train defined — detailed gas analysis and pilot testing recommended.
Dust Collection — Particulate Capture Assessment
Project Challenge
A mineral processing operation required an assessment of its particulate emissions and capture requirements to meet regulatory and occupational health standards.
Design Considerations
- Particle size distribution and loading
- Temperature and moisture in the gas stream
- Collection efficiency requirements
- Maintenance access and filter media selection
Selected Treatment Approach
A pulse-jet bag filter system was evaluated with cyclone pre-separation for coarse particulate, appropriately sized ductwork and an induced-draft fan arrangement.
Verification Status
Preliminary design complete — filter media selection pending confirmation of operating temperatures.
Integrated Environmental Systems — Water & APC in One Facility
Project Challenge
An integrated industrial facility required both water/wastewater treatment and air pollution control systems, with the opportunity to coordinate design, instrumentation and utilities.
Design Considerations
- Shared utility and infrastructure requirements
- Common instrumentation and control philosophy
- Coordinated installation and commissioning
- Integrated monitoring approach
Selected Treatment Approach
A combined scope was evaluated including ETP, process water treatment, chemical fume scrubbing and dust collection, with a unified control panel and optional monitoring integration.
Verification Status
Scope definition stage — individual system designs to follow detailed process review.