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The task of any pH adjustment system is to adjust the pH of the process stream into the defined acceptable discharge range. In the case of an acid neutralization, caustic (NaOH) is added to the effluent stream to pH Neutralize the solution.
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www.phadjustment.com/pH.htm
www.phadjustment.com/pH.htm
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Sodium hydroxide - Wikipedia, the free encyclopedia
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Sodium hydroxide ( NaOH ), also known as lye and caustic soda , is a caustic metallic base. It is used in many industries, mostly as a strong chemical base in the manufacture of pulp and paper,...
en.wikipedia.org/wiki/Sodium_hydroxide
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Caustic Chemicals & Bases ... Acids are chemicals whose first atom is hydrogen, and whose pH value is less than 7. Bases are chemicals whose molecular chain ends with an oxygen-hydrogen pair, and whose pH value is greater than 7. By comparison, distilled water, whose chemical formula is H2O, has the structure H-O-H,
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www.gaianar.com/RFP/Equipment/caustic_chemicals.htm
www.gaianar.com/RFP/Equipment/caustic_chemicals.htm
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Problem being is that I am having a hard time finding a pH versus conducivity versus %caustic solution graph that will supprt my permit application to the State. Any suggestions, locations, publications that would have what I'm looking for.
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www.natscience.com/Uwe/Forum.aspx/analytical/203/pH-vs-...
www.natscience.com/Uwe/Forum.aspx/analytical/203/pH-vs-conductivity-in-caustic-solutions
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Properly designed and operated, electrocoagulation will raise the pH and reduce or eliminate the caustic demand. It works for rinsewater but we do not recommend it for concentrated solutions. That's what chemicals are for.
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www.finishing.com/256/07.shtml
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The lime would control pH and also add Ca²+ which should benefit settling, while caustic addition would add Na+ to the solution which could potentially degrade floc properties according to the divalent cation bridging theory.
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www.pubs.asce.org/WWWdisplay.cgi?0521903
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Engineered Plastic Cooling Towers Impervious to Caustic and Costly pH Factors; By Ed Sullivan (Ed Sullivan is a technology writer based in Hermosa Beach, Calif.) ... The natural and mortal enemy of metal-clad cooling towers is pH, usually on the low side. A high pH leads to excessive calcium and other ceramic-like deposits.
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www.ifma.org/daily_articles/2005/sept/09_27.cfm
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The natural and mortal enemy of metal-clad cooling towers is pH, usually on the low side. A high pH leads to excessive calcium and other ceramic-like deposits. ... Interested in linking to "Engineered plastic cooling towers guard against caustic and costly pH factors"?
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www.plantservices.com/articles/2005/566.html
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A method for treating a spent caustic solution having a pH greater than about 10.5 includes the steps of (a) lowering the pH of the caustic solution into the range of between about 10 to 10.5 to produ ... (b) oxidizing the pH-modified caustic solution until the solution to produce a non-sulfide reactive oxidized solution;
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www.freepatentsonline.com/7005076.html
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