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  1. #1
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    Sep 2012
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    Application chemical product

    Which application point should I choose for water treatment of industrial cooling towers. I use products such as oxidizing biocides, such as sodium hypochlorite and calcium hypochlorite. I also use non-oxidizing biocides (quats, isothiazolines). Currently I apply them away from the suction pump. What would be the right place to obtain the maximum performance and effectiveness of these products?

  2. #2
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    Jan 2004
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    Moved to Tech to Tech commercial forum.
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  3. #3
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    Nov 2004
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    Quote Originally Posted by marioc68 View Post
    Which application point should I choose for water treatment of industrial cooling towers. I use products such as oxidizing biocides, such as sodium hypochlorite and calcium hypochlorite. I also use non-oxidizing biocides (quats, isothiazolines). Currently I apply them away from the suction pump. What would be the right place to obtain the maximum performance and effectiveness of these products?
    In my neck of the woods Bromine is very popular, sodium hypochlorite is cheaper,smelly and loses effectiveness with high PH, NYS mandates tower disinfection after 5 conservatives days of no operation thats where sodium hypochlorite comes into play, we dump a bunch till reading 0.5ppm FC for 1 hour then we switch to Bromine. The ideal place to feed chemicals is the tower sump but most of the time the suction side of the pumps is the only feasible location and when using bromine that the only place where the brominator could be piped.
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  4. #4
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    Apr 2003
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    I'm confused these products you use and most come in powered and liquid form. Makers of these chemicals don't have a recommendation? You don't say anything about a pot feeder or pump.

  5. #5
    Join Date
    Sep 2012
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    Thread Starter
    Is it compatible, quaternary ammonium and calcium hypochlorite ?. I apply them as follows: Quaternary ammonium 120 ppm dose every 4 days. Calcium hypochlorite (tablets) 90 pounds / day continuously in a diluent. However, it failed to achieve chlorine residual greater than 0.05 ppm. How to determine the ideal amount of calcium hypochlorite?

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