Why white ppt diposited in stainless steel tank?

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Why white ppt diposited in stainless steel tank?

The water is purified through series of softner and then store in stainless steel tank.

2007-04-29 22:36:14 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

Is your water deep well (brought from underground aqueducts)?
If it is, then your water is super hard. Hardness is described by the concentration of Magnesium and Calcium in the water supply.
That white precipitate is CaO, Calcium oxide. It deposits in the stainless steel since it cannot oxidize the steel.
Metal oxidation usually happens on Iron and watter, producing the red ppt FeO called rust.

2007-04-29 23:58:07 · answer #1 · answered by mister_analization_2004 3 · 0⤊ 0⤋

Its probably the deposition of alum and zeolites.

2007-04-29 23:01:58 · answer #2 · answered by ag_iitkgp 7 · 0⤊ 0⤋