Liquid CO₂ injection for gentle pH reduction in potable water, brewing, and food-grade applications. No chemical residuals, precise control to pH 6.5-7.5.
Liquid CO2 vaporises and dissolves into water forming carbonic acid. Gentle pH reduction without mineral addition. Ideal for sensitive applications.
Unlike sulphuric acid, CO2 leaves no sulphate or chloride residual. Simply outgasses as CO2 or forms bicarbonate. Safe for food and potable water.
CO2 dosing achieves pH 6.5-7.5 with ±0.20.1 pH accuracy. Self-limiting reaction prevents over-dosing. No risk of acidic effluent.
CO2 is GRAS (Generally recognised As Safe) by FDA. Approved for potable water, brewing, dairy, and all food-contact applications.
Brewing Water
Potable Water
Dairy Processing
Aquaculture
Pharmaceutical
Swimming Pools
Insulated bulk tanks with vaporizers for continuous CO2 supply. Pressure-regulated delivery to dosing point.
CO2 injector assemblies with diffuser nozzles for maximum dissolution efficiency. Mass transfer optimised.
Controllers with slow-acting PID tuning for CO2 dosing response. Setpoint 6.5-7.5 for most applications.
ViewThermal mass flow meters for CO2 flow measurement and dosing rate control. Temperature compensated.
pH correction is a critical stage in wastewater and process water treatment. Incorrect pH can damage downstream biological systems, corrode pipework, violate discharge consent limits, and compromise product quality. Our dosing systems utilise flow-proportional control with automated feedback loops to maintain target pH within ±0.2 units, regardless of influent variability.
Rapid mixing and reaction kinetics ensure complete neutralisation before downstream processes.
Flow-paced and feedback-controlled dosing eliminates chemical wastage and overshoot.
Systems account for influent buffer capacity to calculate precise reagent requirements.
Automated temperature compensation ensures accurate pH measurement across seasonal variations.
| Flow Range | 0.5 – 5,000 m³/h |
| pH Setpoint Range | 4.0 – 10.5 (adjustable) |
| Control Accuracy | ±0.2 pH units |
| Response Time | <30 seconds to setpoint |
| Reagent Concentration | 10% – 98% (application specific) |
| Materials | SS316L, PVC, PVDF, PTFE, rubber-lined steel |
| Control Philosophy | Flow-paced + cascade PID feedback |
| Communication | Modbus RTU/TCP, Ethernet/IP, OPC-UA |
Quality management systems ensuring consistent design, manufacture, and commissioning.
Explosion-proof dosing skids available for Zone 1 and Zone 2 hazardous area installations.
Systems engineered to meet local discharge consent limits including pH, metals, and COD.
Complete pH neutralisation systems for acid and alkaline wastewaters.
View PageFood-grade acid and alkali selection prevents taint and ensures compliance with food safety standards. Automated CIP integration available.
Validated dosing systems with full IQ/OQ documentation. Hygienic design prevents biofilm formation in pure water loops.
High-purity dosing for boiler feed water and cooling tower blowdown neutralisation. Redundant pump arrangements ensure availability.
Heavy-duty construction withstands aggressive mine water chemistry. Remote telemetry enables operation at unmanned sites.
Contact Our Engineers for system design, sizing, and quotation.
Our expertise spans multiple industries with sector-specific water treatment solutions.