Chemical Dosing Systems

Chemical Dosing Systems

In water treatment, chemical conditioning is a process for changing the behavior or properties of water by the addition of chemicals. Such chemicals may be, for example, pH adjusters, inhibitors, dispersants, coagulants or flocculants, film-forming agents or biocides.

A dosing system includes equipment for injecting, processing, preparing, mixing and storing chemicals. Depending on the application and the type of chemical, this equipment can be used, for example, for measuring pumps, transfer pumps, pipelines, valves, instrumentation, calibration units, storage tanks, mixers, and so on. It may contain.

Dosage pumps are generally designed as piston pumps, e.g. diaphragm dosing pumps or piston pumps. Water jet pumps are also used for some applications.

Dosing and transfer system for volatile conditioning agents for boiler feed water treatment. Dosing pumps, transfer pumps, mixers, day tanks, calibration units, chemical vapor traps, valves, pipes and instrumentation included.

Raw water treatment: removal of solids by coagulation or flocculation, eg dosing into the feed line of a multi-media filter

• Boiler feed water treatment: → Chemical conditioning of the water-steam cycle, for example by injection of trisodium phosphate and ammonia water.
• Recirculating cooling water treatment: → Chemical conditioning of cooling water, for example by corrosion inhibitor, dispersant or biocide injection.
• Reverse osmosis: Injection of antiscalant to prevent or reduce mineral sedimentation in reverse osmosis membranes.
• Neutralization of regeneration waste water from ion exchange demineralization plants: eg. hydrochloric acid (HCl) or sodium hydroxide (NaOH).
• Disinfection: Injecting chlorine (Cl2) or sodium hypochlorite (NaOCl) into water, for example
• Chlorine removal: eg injection of sodium sulfite (Na2SO3) into chlorinated water
• Iron removal: For example, injection of potassium permanganate (KMnO4SO3) into the feed water of a sand filter plant.