Process water pH control, effluent neutralisation, reactor pH management, and scrubber blowdown treatment for chemical manufacturing.
Process water pH, reactor pH control, scrubber blowdown neutralisation, and effluent compliance for chemical manufacturing plants.
Chemical synthesis reactions are often pH-dependent. Exothermic neutralisations require controlled acid or alkali addition with cooling to prevent thermal runaway and side reactions.
Acid and caustic scrubbers remove SOx, NOx, HCl, and NH3 from vent gases. Blowdown requires pH correction before discharge or recycle to prevent corrosion and meet limits.
Cooling tower cycles of concentration increase pH and alkalinity. Acid dosing (sulphuric or hydrochloric) controls pH 7.0–8.5, preventing scale and optimising cycles.
Chemical plant effluent can vary from strongly acidic to strongly alkaline. Two-stage neutralisation with inter-stage equalization ensures reliable compliance at 6–9 pH.
| Application | Target pH | Reagent | Control Type |
|---|---|---|---|
| Reactor pH (Acidic Rxn) | 1.0 – 4.0 | Sulphuric / HCl | Batch / Cascade |
| Reactor pH (Alkaline Rxn) | 9.0 – 12.0 | Caustic Soda / Lime | Batch / Cascade |
| Acid Scrubber Blowdown | 6.0 – 9.0 | Caustic Soda / Lime | Continuous |
| Caustic Scrubber Blowdown | 6.0 – 9.0 | Sulphuric / HCl / CO2 | Continuous |
| Cooling Tower | 7.0 – 8.5 | Sulphuric Acid | Continuous |
| Final Effluent | 6.0 – 9.0 | Acid or Alkali | Continuous / Batch |
Sulphuric and hydrochloric acid dosing with Hastelloy or titanium metering pumps for corrosive service.
Discover MoreCaustic soda and lime dosing for scrubber blowdown and effluent neutralisation with cooling.
Discover MoreIntrinsically safe pH control panels for hazardous areas with SIL-rated dosing and redundant sensors.
Discover MoreBatch pH correction tanks with agitation, level control, and discharge interlocks for effluent compliance.
Discover MorepH 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.
Food-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.
Adjacent industry pH practice — comparable PVDF / Hastelloy materials, ATEX requirements and aggressive chemistry.
Read MoreAll pH adjustment technologies, reagents and reactor designs.
Read MoreFeedback, feed-forward and cascade control for pH dosing loops.
Read MoreRight pump for acid / caustic / lime dosing duties.
Read MoreContact Our Engineers for system design, sizing, and quotation.
Illustrative scenarios showing how this equipment is configured for real-world applications.
Our expertise spans multiple industries with sector-specific water treatment solutions.