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Someone answer me this question once and for all? Who can get hired as a wastewater treatment engineer? ANYONE with ANY professional engineer's license? Just CE's with CE PE's. Chemical engineers with Chemical engineering PE's? Mechanical or environmental's?

Check Kohl's Handbook and "Ball" article published by Gulf. Using my poor memory, thermal degradation starts to rapidly increase at 260 Deg F for amines. I believe thermal flux to reboilers should not exceed ~30,000Btu/ft2 hr as well. Grumpus

More information is necessary here. What are the other operating variables? Grumpus

Do you know the cause of the foaming? What type of contaminants are in the system? Anything that could possibly reduce the surface tension? Grumpus

What is truly important about chosing an APC vendor is the how experienced/competent are the implementors/testers. Advanced Control is only as good as the people who put it in. A huge amount of upfront work/analysis is needed in the "pre-test" phase to determine the...

Reducing CO2 to methane is routinely done in refinery hydrogen plants. Grumpus

Stoner, My knowledge here is limited to aqueous H2S in carbon and stainless steels. When H2S is present in aqueous acidic solutions heavy corrosion can occur. The hydrogen sulfide in solution will react with the iron in the carbon steel forming two products: molecular hydrogen and iron...