01

Water treatment: coagulant dosing

A water-treatment duty often follows raw-water flow and quality. Selection begins with maximum plant flow, dose range, coagulant concentration and required turndown. Storage volume, calibration, duty/standby pumps and flow-paced control can be more important than the pump's maximum nameplate capacity.

  • Variable flow and dose
  • Chemical ageing or crystallisation
  • Operator calibration access
  • Standby availability
  • Residual or water-quality feedback where specified

02

Power plant: boiler-water chemical injection

Power applications can combine low flow with meaningful injection pressure and high availability expectations. Verify injection-point pressure across operating cases, chemical compatibility, continuous-duty capability, redundancy, relief protection and interfaces with plant control systems.

  • Maximum boiler or feedwater pressure
  • Continuous operation and standby philosophy
  • API or project specification requirements
  • Chemical preparation and agitation
  • Interlocks and remote status

03

Chemical plant: hazardous reagent dosing

A hazardous or valuable chemical shifts emphasis toward containment, leak detection, closed draining, materials traceability and safe maintenance. A hydraulically actuated diaphragm or double-diaphragm arrangement may be evaluated depending on the project requirement.

  • Toxicity and exposure controls
  • Sealed liquid end and leak detection
  • Hazardous-area electrical equipment
  • Closed vent, drain and flushing philosophy
  • Inspection and documentation requirements

04

What should be recorded in a real case study

A publishable Petrox case study should state the customer-approved problem, process conditions, selection logic, supplied scope, commissioning method and measured result. Confidential names and data should be anonymised only with approval, and performance claims should be supported by records.

  • Industry and application
  • Verified before condition
  • Engineering constraints
  • Delivered equipment and services
  • Measured result and customer approval

Frequently asked questions

Are these Petrox customer case studies?

No. They are representative application examples intended to explain the engineering approach. Verified customer case studies will be published only with suitable evidence and approval.

Can Petrox review an existing dosing system?

Yes. Share the process duty, installed equipment data, operating symptoms and available site records for an initial engineering review.