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Recent content by jerdog

  1. jerdog

    Multi Stage Scrubbing for H2S

    Engineering Manager, No real objection to using multi stage. Was looking at a saleman's cost analysis and just wanted to understand the chemistry. His numbers justified multi-stage at way lower concentrations than 50 ppm, although our target is 40 ppm and seems to make a good case for...
  2. jerdog

    Multi Stage Scrubbing for H2S

    Can anyone give me a brief explanation why using two stage chemical scrubbing {NaOH (1st stage) & NaOH + NaOCL(second stage)} for H2s removal in wastewater off gasses makes sense over single stage scrubbing (NaOH + NaOCL) at certain concentrations of H2S?
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