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Phosphates for potable water treatment perform several functions that include: iron and manganese control, scale inhibition and removal, corrosion control and chlorine stabilization.
This research presents results from phosphate dosing experiments using a real scale chlorinated DWDS, comparing standard phosphate concentrations of United Kingdom drinking water (1 mgP/L) with a double dose (2 mgP/L) commonly used in plumbosolvency treatment.
Phosphates have many uses in the treatment of potable (drinking) water. They are used to prevent “red” (from iron) and “black” (from manganese) water; to prevent and/or retard scale formation (from minerals depositing) and corrosion (from low pH and/or dissimilar metals) in the water distribution system; and to reduce soluble lead and ...
13 Απρ 2017 · • Phosphates in Water Treatment • Chemical Inhibitors • Dosage Rates • Selection of Phosphates/Benefits of Phosphates • Case Studies • Monitoring Corrosion Control Success
23 Φεβ 2024 · Answer: Public water systems (PWSs) commonly add phosphates to drinking water to prevent the release of metals in drinking water. Orthophosphate is most commonly used for lead and copper control. Polyphosphates sequester iron and manganese to prevent discolored water but are not effective to control lead and copper.
To achieve passivation of new or previously untreated systems phosphate is typically dosed at > 3.0 mg/L as orthophosphate. The typical maintenance dosage to ensure corrosion control is 0.5-1.5 mg/L as orthophos-phate.
The following dosing table provides the "beginner" dose of Flourish Phosphorus™ for various water volumes. This table applies to bottles of 100 mL - 500 mL. Please note that the 2L and 4L bottles of Flourish Phosphorus™ have larger cap volumes than the smaller bottles.
