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  1. FrancisM

    Softening vs pH dosing of cooling towers

    Folks, Most of the above comments are untrue. When treating cooling water for scale reduction, the only items removed by softening are calcium and magnesium, reducing chances of mag silicate, calcium mag silcate, and calcium carbonate. If you remove all calcium, you will actually make the...
  2. FrancisM

    Hard Water Problem

    The use of conventional antiscalants will work very well. They can be added to the solution to prevent crystallization of solids in the solution. Call GE Betz for details, or email me for details.
  3. FrancisM

    Precipitate the heavy metal from EDTA complex ??

    A proven solution can be provided by GE Betz, a chemical company who specializes in water treatment chemicals. Try them.
  4. FrancisM

    removing mercaptans from tail gas

    There are gas treatments that can react with and removed mercaptons and H2S from gas streams - biogas, methane, nat gas, etc. GE Betz has such treatments
  5. FrancisM

    Multi Stage Scrubbing for H2S

    Folks, Its important to remember that an oxidizer is used to destroy the reduced sulfur compounds, so that they will not re-release when the scrubber solution pH is dropped back to neutral, either at waste treatment or in sewer system.
  6. FrancisM

    Odour Control with Activated Carbon

    A simpler method is to prevent H2S formation by chemical addition to the collection system. By inhibiting H2S formation, you get odor control as well as corrosion control, which is the big money saver. Email me for more info.
  7. FrancisM

    H2S removal from air

    Sorry for late response. The best way, in terms of cost and convenience, is to inhibit its biological formation in the collection system, or to scavenge the H2S while its still in the water. H2S of 1 ppm in water will yield up to 200 ppm in the air, so eliminating in the water is the cheapest...

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