Precision chemical injection systems for coagulation, pH adjustment, disinfection, and specialised water treatment applications.
Reynolds & Bauhm chemical and process engineering calculations.
Automated pH Neutralisation systems for acidic and alkaline wastewater.
Chemical industry wastewater treatment for atex-certified equipment.
Treat polymer and resin manufacturing wastewater. Monomer removal, high COD and suspended solids separation.
Use our Intelligent Dosing System Designer to size the pumps, day-tanks, mixing and injection from your duty and auto-generate a complete bill of materials — then send it to us to quote and build.
Our chemical dosing systems deliver accurate, consistent chemical injection for optimal water treatment performance across diverse applications.
Advanced metering pumps with flow rates from 0.1 to 10,000 L/h and accuracy within ±1% for consistent chemical delivery. Learn more
Systems engineered for coagulants, flocculants, pH adjusters, disinfectants, and speciality chemicals with appropriate material selection. Learn more
Automated dosing based on real-time flow measurement and analytical sensor feedback for demand-based chemical addition. Learn more
Leak detection, containment bunds, ventilation systems, and emergency shutdown capabilities for safe chemical handling. Learn more
PLC/SCADA integration with alarms, trending and remote set-point control for unmanned dosing stations. Learn more
Free interactive tool to size dose rate, day-tank volume and pump capacity from your flow and target concentration. Learn more
Bulk reagents and day tanks are sized from consumption rates and delivery intervals, with materials selected for chemical compatibility — HDPE for acids, rubber-lined steel for corrosives, GRP for oxidants. Secondary containment, vent scrubbing, and level monitoring are integral.
Positive-displacement metering pumps deliver reagent at flow-proportional rates with ±1% accuracy. Duty-standby configuration, stroke-speed control, and calibrated stroke length ensure consistent delivery across turndown ratios from 10:1 to 100:1.
Rapid, uniform dispersion is achieved through in-line static mixers or mechanical agitators sized for the target velocity gradient and residence time. Injection quills and diffusers are positioned for plug-flow behaviour, preventing short-circuiting and ensuring complete homogenisation.
The dosed reagent reacts within a defined residence time to achieve the target water-quality parameter — pH, coagulant sweep-floc concentration, or disinfectant residual. Analytical sensors close the control loop, trimming the dose against setpoint to maintain performance as influent conditions vary.
Reliable positive displacement pumps for precise low-flow dosing applications. Ideal for coagulants and pH adjusters.
Gentle pumping action prevents shear-sensitive polymer degradation. Perfect for polymer and flocculant dosing.
High-pressure dosing for demanding applications requiring precise injection at elevated pressures.
Pre-engineered, skid-mounted dosing stations ready for quick installation, commissioning and handover.
Smooth, low-pulsation dosing for viscous and abrasive fluids such as lime milk, matured polymer and conditioned sludge.
Loss-in-weight dry-chemical feeders for powdered lime, PAC and dry polymer, metering into an automated make-up tank.
A dosing system is more than a pump. The right configuration depends on the reagent, the duty and how the system is delivered to site.
Every dosing system does the same four things — store the reagent, meter it accurately, inject and mix it into the flow, and control it to target. What changes is how many reagents are dosed, how the chemical behaves (corrosive, gassing, abrasive or shear-sensitive) and how the system is packaged. Below are the configurations we design and build, with guidance on where each fits.
One reagent, one or two pumps (duty/standby), control and containment on a single frame. The workhorse for pH correction, coagulant or disinfectant dosing — factory wet-tested and ready to connect.
Packaged SkidsThe engineering case for our Intelligent Dosing System Designer — faster sizing, validated chemistry, accurate bills of materials and fewer commissioning surprises.
See the AdvantagesSeveral reagents, or one reagent at several injection points, coordinated from one control panel with sequencing and cross-loop trim — for staged neutralisation or coagulant-then-polymer trains.
Multi-Point SystemsAutomated wetting, ageing and dilution of flocculant polymer feeding a low-shear dosing pump — make-up and dose interlocked so the pump never runs on immature or empty solution.
Polymer DosingA complete dosing plant room in a weatherproof, bunded container with full automation — sited outdoors with minimal civils, ideal for remote or unmanned sites.
Containerised DosingDiaphragm metering for clean reagents, peristaltic for gassing/abrasive (lime, hypochlorite), progressive-cavity for viscous polymer — the pump sets the achievable accuracy and turndown.
Browse Our Dosing PumpsWe don’t sell pumps off a shelf — we size storage, pumps, injection, mixing, control and containment to your measured flow, dose and chemistry, then build and commission it.
Design & BuildThe correct dose comes from reaction stoichiometry or jar testing, is converted to a pump output with the dosing equations, and is held on target as flow and quality change by the control loop — flow-paced, residual-trim or compound-loop. Get those right and dosing becomes predictable and cheap; the full method is on the chemical dosing hub.
In-depth engineering pages covering chemistry, pump selection, control strategy and per-chemical dosing design.
Ferric chloride, alum and PACl — selection, dose-response curves, jar testing protocol.
Read MoreAnionic, cationic and nonionic polymer selection; charge density, MW, preparation and mixing.
Read MoreHypochlorite, chlorine dioxide and peracetic acid — CT values, DBP trade-offs, residual control.
Read MoreFeedback, feed-forward and cascade control; PID tuning, sensor selection, SCADA integration.
Read MoreSolenoid, motor-driven diaphragm, peristaltic, progressive cavity — matrix per chemical and duty.
Read MoreAcid, alkali, lime and CO₂ dosing for pH adjustment across industries.
Read MoreMake-up tanks, ageing reactors, eductors and feed-system design.
Read MoreOnline tool to size dose rate, pump capacity and chemical consumption.
Use ToolThe core formulae converting target dose and flow into pump output — neat or diluted — with worked examples.
Read MoreAluminium sulphate, ferric chloride, and PAC dosing for suspended solids removal in clarification processes.
Learn About CoagulationAnionic and cationic polymer injection for sludge conditioning and dewatering optimisation.
Polymer SystemsChlorine, sodium hypochlorite, and alternative disinfectant dosing for pathogen control.
Disinfectant DosingSpeciality chemical injection for membrane protection in desalination and RO systems.
Antiscalant DosingAntifoam agent dosing for foam control in aeration basins and process tanks.
Antifoam DosingBeyond coagulant, polymer and pH — the speciality reagents and supporting disciplines that keep a plant compliant and efficient. Each is engineered to the reagent’s behaviour, not dosed from a generic skid.
Threshold inhibitor and acid dosing that keeps RO membranes, cooling circuits and boilers scale-free at a few mg/L — flow-paced and fail-safe interlocked.
Antiscalant DosingOn-demand silicone and non-silicone defoamer dosing that knocks foam down without the overdose that stabilises it — spray or sub-surface, low-shear pumps.
Antifoam DosingVolumetric and gravimetric feeders for lime, PAC and dry polymer, with controlled make-up, dust control and anti-bridging hoppers — 0.5 to 5,000 kg/h.
Dry & Powder DosingUrea, phosphoric acid and DAP dosing that restores the BOD : N : P balance for carbon-rich industrial effluent — load-paced, residual-trimmed, consent-guarded.
Nutrient DosingCalibration columns, gravimetric and analytical checks that turn a pump setpoint into a proven, documented dose — the cheapest reliability win on any plant.
Calibration & VerificationHypochlorite, chlorine dioxide and PAA dosing with CT targets, DBP trade-offs and residual control for effluent and process disinfection.
Disinfectant DosingPrecise dosing minimises chemical consumption while maintaining treatment efficiency, reducing operational costs.
Automated control ensures consistent effluent quality regardless of influent variations.
Enclosed systems with safety interlocks protect operators from chemical exposure.
Accurate dosing helps meet discharge limits while minimising chemical residuals in effluent.
Robust design with minimal moving parts reduces maintenance requirements and downtime.
Modular systems can be expanded to accommodate growing treatment requirements.
Containerised electrocoagulation systems for heavy metals, emulsified oils, colloidal solids, paint wastewater.
View Containerised OptionStorage and day tanks for coagulants, polymers, acids and alkalis.
View Chemical TanksBlending and homogenization tanks for chemical preparation and conditioning.
View Mixing TanksSpecify a chemical dosing system and generate a full bill of materials.
Open the DesignerIndustry case study: pH correction for oil and gas process water and refinery effluent.
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 MoreCoagulant and flocculant dosing chemistry, jar-test translation and mixing-energy design.
Read MoreSize dose rate, day-tank volume and pump capacity from flow and target concentration.
Open CalculatorOur engineers will design the perfect system for your application.
Refinery water reuse systems for cooling tower makeup, boiler feed and process applications.
ViewCompact produced water treatment for offshore platforms. Hydrocyclones, flotation and filtration for overboard discharge.
ViewWastewater treatment for pipeline pigging, tank drainage and terminal operations.
ViewComplete documentation and validation packages for pharmaceutical wastewater treatment systems.
ViewRemove active pharmaceutical ingredients from wastewater. Advanced oxidation, adsorption and advanced biological treatment for API removal.
ViewTreat high-COD pharmaceutical wastewater with strong organic loads.
ViewOur expertise spans multiple industries with sector-specific water treatment solutions.
Explore closely-related topics, equipment and guides
Send your influent analysis and our engineers assess your process and recommend a tailored treatment solution — free, confidential and no obligation.
Select the regulatory standard for your country — it sets which parameters we need for a compliance-aware process assessment.
Required parameters for the chosen standard are flagged on the sample form. You can still submit a partial set and we will advise what else to test.
Your sample is stored against your company so we can track the project. Provide a company name or email as a minimum.