Reagent treatment

Reagent treatment of water is the most complex technology that requires the highest competence technology developer. Introduction to water reagents requires a clear understanding of all the chemical and physico-chemical processes occurring at the same time.

Reagent treatment pursues a variety of goals. The most common tasks to be solved as follows:

• removal of temporary hardness;
• removal of temporary and permanent hardness;
• reduction of color and oxidation (coagulation, oxidation, including chlorination);
• removal of heavy metals due to the transfer of their insoluble form (iron removal, demanganation);
• adjusting the composition (pH, alkalinity);
• clarification (coagulation, flocculation);
• stabilization processing.

Chemical Treatment can be done in different ways:

• dosing directly into a conduit through which water to be treated is transported;
• metered into a stirred reactor.

For more complex tasks employ cascades of reactors, each with a specific chemical reaction is performed. Often chemical treatment is applied in combination with other technologies and usually precedes clarification, mechanical filtration, ultrafiltration, reverse osmosis, and so forth.