Why do Cement Industries primarily use Filtration Set-Ups than Ion Exchangers when treating wastewater?

What are the advantages and disadvantages of using a Filtration Set-Up and an Ion Exchanger?

1 Answer

  • 1 month ago

    ion-exchange targets dissolved solids. Filtration captures suspended solids. A lot of the fugitive emissions in the water exists as suspended particles so that is the primary target of primary treatment. There will also tend to be dissolved solids, but typically the dissolved solid contents are not unacceptably high. There might be a need to adjust pH, and that also tends to cause the deposition of dissolved solids as particulates. This means that the pH adjust ought to be done upstream from the particle filtration.

    treatment is designed to target the problem. We don't use rags to clean air, say. Ion exchange is not required to avoid excess dissolved contaminants in the water in that situation, as a general thing. It can be required, but typically is not. The main dissolved solids are calcium and magnesium and sulfate and carbonate. Those are not "Pollutants" in and of themselves and will not often exceed regulatory limits for discharge to sewer or surface water. Hard water is not pollution in and of itself. Turbid water is though.

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