Combined sewer overflow (CSO) treatment and wet-weather flow handling — screening, storage and high-rate treatment that protect rivers during storm events.
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.
Combined sewer systems carry both sanitary sewage and stormwater. Heavy rainfall can overwhelm treatment capacity, causi
Wastewater streams frequently carry organic loads 5-50x higher than domestic sewage, demanding robust biological or physical-chemical treatment capacity.
Temperature, pH, flow, and concentration swings between production shifts create treatment instability without proper equalisation and buffering.
Shock loads, toxins, or pH extremes can kill beneficial biomass. Protection mechanisms like equalisation and pH correction are essential.
High FOG content causes pipe blockage, flotation cell failure, and membrane fouling. Effective pre-treatment prevents downstream operational issues.
Variable chemical composition from cleaning agents, process chemicals, and raw materials requires adaptable treatment chemistry and dosing control.
Discharge consents are tightening continuously. Treatment must not only meet current limits but accommodate future reductions without major rebuild.
Our CSO treatment systems provide high-rate screening, settling, and disinfection for wet weather flows. These systems t
Comprehensive analysis of wastewater volume, quality, temperature, and variability informs process selection and equipment sizing for optimal performance.
Treatment train selected from screening, DAF, biological, filtration, and disinfection options based on effluent targets, footprint, and Capital expenditure constraints.
Materials, pumps, blowers, and instruments specified for the specific duty conditions, chemical environment, and operational maintenance capabilities.
PLC-based control with online monitoring automates chemical dosing, aeration, and sludge withdrawal. Remote access provides 24/7 oversight.
Site acceptance testing verifies mechanical, electrical, and process performance. Operator training ensures confident day-to-day management.
Contractual effluent targets with financial backing demonstrate our confidence. Monthly reporting proves continuous compliance for regulators and stakeholders.
Green infrastructure including rain gardens, permeable pavement, and detention basins can reduce stormwater volumes ente
Every system is designed for your specific wastewater characteristics, flow profile, and effluent targets. No off-the-shelf assumptions — just validated process engineering.
Equipment selected from manufacturers with proven field performance in similar applications. Duty/standby arrangements and robust construction minimise unplanned downtime.
Design targets are set at 50-70% of consent limits, providing a safety margin for process variation. Continuous monitoring and automated reporting demonstrate compliance.
Intuitive controls, clear instrumentation, and accessible maintenance points reduce training requirements. Standard operating procedures written in plain language.
Direct access to our process engineers for operational advice, troubleshooting, and optimisation. Remote diagnostics and rapid on-site response keep your plant running.
Materials certified to EN 10204 3.1, welding procedures qualified to ISO 9606, and pressure testing to 1.5x design pressure. Full traceability from mill to commissioning.
Large-scale centralised wastewater treatment plants for cities and municipalities.
View PageEnsure municipal wastewater treatment compliance with discharge permits.
View PageDecentralised wastewater treatment plants for villages, resorts and remote communities.
View PageProtect receiving waters with advanced municipal wastewater treatment.
View PageMunicipal wastewater treatment protects public health and receiving waters by progressively removing solids, organic matter, nutrients, and pathogens from sewage. Our engineered solutions address the unique challenges of municipal flows including diurnal variation, stormwater ingress, seasonal population changes, and increasingly stringent discharge standards.
Screening, grit removal, and flow equalisation protect downstream processes from damage and overload.
Gravity separation of settleable solids achieving 50-70% TSS and 25-40% BOD removal.
Activated sludge, MBBR, or SBR processes remove dissolved organics and enable nutrient control.
Filtration, UV, or chemical disinfection guarantees compliance with bathing water and reuse standards.
| Design Flow | 50 – 500,000 PE (population equivalent) |
| Dry Weather Flow | 150 – 250 L/PE/day |
| BOD Loading | 50 – 70 g/PE/day |
| TSS Loading | 60 – 90 g/PE/day |
| Nitrogen Loading | 8 – 12 g/PE/day |
| Phosphorus Loading | 1.5 – 3.0 g/PE/day |
| Hydraulic Retention | 4 – 12 hours (biological stage) |
| Sludge Production | 30 – 50 g DS/PE/day |
EU 91/271/EEC compliance for BOD, COD, TSS, and nutrient removal based on plant size and sensitivity.
Enhanced disinfection and nutrient removal for coastal and recreational water discharges.
Compliance with REGULATION (EU) 2020/741 for agricultural irrigation and industrial reuse.
Our experts can design a system tailored to your specific requirements.
Our expertise spans multiple industries with sector-specific water treatment solutions.