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Wastewater Treatment Cast Iron Pump Problem

Wastewater Treatment Cast Iron Pump Problem

Wastewater Treatment Cast Iron Pump Problem

(OP)
Our wastewater treatment center provides treatment to all plant runnoff.  We are a soda bottling plant where the runoff is dilute soda (ph-3.8-5.0), line lube, sugar water, sanitation caustic, facultative anaerobes aka natural flora, small fragments of plastic aluminum wood. They are centrifigual pumps with a SS impelar and cast iron housing.   We have had two pumps go out that are 2 years old.  On both pumps the cast iron housings have been corroded away while the SS impelar is fine.  My question is with such acidic solution (ph-3.8-5.0; temp - 50-70 F) should the pump housing been made out of SS?

RE: Wastewater Treatment Cast Iron Pump Problem

Suggest this question might reach a more suitable audience in forum407

A.

RE: Wastewater Treatment Cast Iron Pump Problem

(OP)
thank you

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