Tunnel grouting generates large volumes of highly alkaline wash water that must be treated before discharge or reuse. As environmental scrutiny increases, contractors are seeking safer, more efficient alternatives to traditional acid dosing for pH correction and compliance.
Smart Storm's NeutraliZer® has been developed specifically to simplify the treatment of high-pH construction wastewater generated during activities such as grouting, concrete washout and tunnelling.
Rather than using hazardous mineral acids, the system uses carbon dioxide (CO2) to continuously neutralise alkaline wastewater, providing stable pH control while improving operator safety and reducing the risks associated with chemical handling.
The compact, skid-mounted system is suitable for temporary and permanent installations, treating flows of up to 50 m³/hour. Integrated pH monitoring, automated control and optional remote telemetry provide continuous process visibility and a complete audit trail to support environmental compliance.
By combining safer operation with reliable pH correction, NeutraliZer® helps contractors reduce environmental risk, minimise manual intervention and simplify wastewater management on demanding construction sites.
As tunnelling and major infrastructure projects continue to grow, effective management of grouting wash water is becoming an increasingly important part of environmental compliance. Technologies that improve safety, simplify operation and deliver reliable pH control can help contractors protect the environment while reducing operational costs and project risk.




