Chris RO permeate is ...

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Chris

RO permeate is corrosive as has a very low LSI (Langelier index) that is pH dependent. In order to reduce the corrosion potential, you must adjust the pH to get a positive LSI. Note that if the value of LSI is to high then the permeate can result in scaling in case of high content in carbonates depending of the remineralization process.

The best solution is to install a proper remineralization system, but if not, at least balance the LSI with caustic.

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Thanks Manuel.

Primarily i am controlling pH for Chlorine disinfection. If i dont control the pH, it will sit around mid to high 8 pH, and with the island population not protected due to poor infrastructure/lack of vermin proofing, disinfection is my primary concern. Steel tank corrosion is a distant second.

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