Coagulant dosing
Alum, ferric and other approved coagulant dosing based on plant flow, raw-water variation, solution concentration and treatment objectives.
Petrox EngineeringWTP, STP and ETP chemical treatment
Dosing Pumps & Chemical Systems for Water and Wastewater Treatment
Petrox Engineering supports municipal and industrial water-treatment duties from chemical-dose calculation and pump selection through skid integration, commissioning and spare-parts support.
Applications
Where Petrox supports water and wastewater treatment
Polymer preparation and dosing
Controlled preparation, ageing and dosing systems designed around polymer type, dilution, mixing energy and solution sensitivity.
pH correction
Acid, caustic or other approved reagent dosing with materials and safety provisions selected for concentration and temperature.
Disinfection chemical dosing
Liquid chemical-feed packages for approved disinfectants, incorporating suitable containment, calibration and process interlocks.
Sludge transfer
Screw and progressive-cavity pump options evaluated for sludge solids, viscosity, abrasiveness, shear sensitivity and required flow.
ETP chemical systems
Multi-chemical dosing packages for industrial effluent treatment, including neutralisation, coagulation, flocculation and process-specific treatment.
Operating challenges
Requirements that shape the solution
- Wide variation in plant flow and chemical dose
- Gas-forming, settling or crystallising chemicals
- Outdoor installation and operator access
- Frequent calibration and chemical replenishment
- Sludge solids and abrasive service
- Reliable operation with practical maintenance
Selection inputs
Information needed for selection
- 01Minimum and maximum plant flow
- 02Target dose and chemical solution strength
- 03Chemical storage and preparation method
- 04Injection pressure and number of dosing points
- 05Automatic flow-paced or residual control
- 06Required autonomy, redundancy and site environment
Relevant equipment
Pump and dosing solutions for this sector
Dosing pumps
Chemical feed selected around dose and injection pressure.
Chemical dosing systems
Turnkey storage, preparation and dosing packages.
Screw pumps
Low-shear transfer for sludge and viscous fluids.
Industrial agitators
Chemical preparation and tank mixing.
Frequently asked questions
Technical questions from project teams
How is dosing-pump capacity calculated from a treatment dose?
Convert plant flow and target active dose into chemical mass flow, then account for the supplied solution concentration and density before applying a justified engineering margin.
Can dosing output follow changing plant flow?
Yes. The appropriate pump and control arrangement can accept a flow signal or other approved process input, subject to the required turndown and treatment philosophy.
Application engineering support
Share your duty conditions.
Send the fluid, capacity, pressure, temperature, materials and project requirements. Petrox will review the application and coordinate a suitable VK Pumps solution.