Meet discharge requirements for suspended solids, pH, and contaminants in sensitive urban environments.
Specialised water treatment for metro & tunnelling. TBM slurry, dewatering and construction discharge compliance.
Groundwater treatment for tunnel dewatering operations. Remove suspended solids, adjust pH and manage contaminated water.
Recycle tunnelling wastewater for TBM slurry makeup, dust suppression and concrete batching.
Sediment and suspended solids removal for tunnel construction wastewater.
How tunnelling projects achieve environmental compliance — discharge consents, monitoring and protection of receiving waters. This page explains what regulators look for and how the treatment plant demonstrates it. We map each water stream against its receiving environment — surface watercourse, foul sewer or ground — and the specific consent that governs it. The plant is then designed to meet the tightest applicable limit with margin, supported by monitoring, alarms and reporting that satisfy the environmental regulator and the project’s own sustainability commitments.
Tunnelling and construction dewatering in urban areas must meet strict discharge requirements for suspended solids, pH, o
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.
Our treatment systems are designed to meet urban discharge requirements with appropriate treatment for each parameter. M
We manage discharge permit applications, amendments, and renewals. Environmental regulators trust our data and engineering credibility, speeding approvals.
Effluent sampling follows ISO and national standards. Third-party laboratory analysis provides defensible data for regulatory submissions and legal defence.
Continuous data logging, calibration records, and maintenance logs are organised for instant retrieval. Environmental audits become routine, not stressful events.
We design for 50-70% of the consent limit, not 100%. This safety margin absorbs process upsets, seasonal variation, and instrument drift without breach.
Performance guarantees with financial backing shift liability from your balance sheet to ours. Insurance and bonding protect against worst-case scenarios.
Design, fabrication, and commissioning follow ISO, EN, and industry-specific standards. Documentation packages satisfy due diligence for lenders and insurers.
Continuous monitoring with data logging provides documentation for regulatory compliance. Automated alarms alert operato
pH, COD, TSS, ammonia, and flow instruments provide continuous real-time data. 4-20 mA signals feed the PLC for closed-loop control and SCADA trending.
Intuitive operator screens with colour-coded status, trend charts, and alarm summaries. Remote access via secure VPN allows off-site monitoring and support.
Prioritised alarms with SMS and email escalation. Smart suppression prevents flooding. Maintenance reminders based on run-hours and calendar prevent breakdowns.
Daily, weekly, and monthly performance reports generated automatically. Effluent quality summaries, chemical consumption, and compliance status emailed to stakeholders.
Quarterly audits by our engineers verify instrument accuracy, control loop performance, and maintenance practices. Recommendations prevent gradual degradation.
Years of operational data stored securely in the cloud. Export to Excel for regulatory submissions. API access connects to ERP and environmental management systems.
Directory of international wastewater treatment regulations and equipment compliance standards Organised by country and region.
View PageRemove contaminants from tunnel groundwater including heavy metals, hydrocarbons and sulphates for safe discharge.
View PageMetro construction, tunnel boring machines (TBM), and cut-and-cover excavation generate slurry water containing bentonite, cement fines, groundwater contaminants, and tunnelling additives. Treatment systems must handle high solids loading, variable flow rates, and tight site constraints while enabling water recycling to reduce freshwater consumption and tanker discharge volumes.
Desanding and desilting plants separate spoil from bentonite slurry for EPB and slurry TBMs.
Wellpoint dewatering and settlement tank systems manage groundwater ingress during excavation.
Closed-loop treatment enables 80-95% water reuse, minimising tanker transport rates.
Containerised and trailer-mounted systems for rapid deployment and relocation between sites.
| TBM Slurry Flow | 200 – 2,000 m³/h (EPB shield dependent) |
| Solids Loading | 10 – 40% by weight (spoilt slurry) |
| Particle Size | 0.001 – 100 mm (sand to boulder fragments) |
| Dewatering Well Flow | 5 – 50 m³/h per wellpoint |
| Groundwater Treatment | pH adjustment, iron/manganese removal |
| Water Reuse | 80 – 95% recycling for TBM and grout mixing |
| Footprint | Compact skids for 500 m² site compounds |
| Mobility | Trailer/container mounted for rapid relocation |
Site dewatering discharge meets local authority consent for suspended solids and pH.
Groundwater treatment complies with Construction Environmental Management Plans (CEMP).
Dewatered spoil meets landfill acceptance criteria or is recycled as engineered fill.
Our experts can design a system tailored to your specific requirements.
Our expertise spans multiple industries with sector-specific water treatment solutions.