The Effect of Ortho- and Poly-Phosphates on the Properties of Iron Particles and Suspensions Formed From the Oxygenation of Ferrous Iron in Water
邻磷酸盐和聚磷酸盐对水中亚铁氧化形成的铁颗粒和悬浮液性质的影响
Colored water problems can be reduced by removing source water iron, controlling corrosion
and iron release from corrosion scales, and controlling the form of iron precipitates. Chemicals such
as silicate or polyphosphate may be used to reduce the amount of noticeable iron precipitate. This
approach may be used to reduce the impacts of both source water iron and iron released from
distribution system materials. Corrosion may be controlled by proper control of pH, alkalinity and
hardness, as well as through the use of corrosion inhibitors such as orthophosphate. The objective
of this research was to evaluate the effect of orthophosphate and several polyphosphates on the
properties of iron particles and aqueous iron suspensions formed from the oxygenation of Fe(II). Details are given of the materials and methods used, which include: reaction cell; water; chemicals; analytical methods; experimental procedure; and, particle analysis.
Includes 23 references.