There is only a single light soda commonly used due to the need to adjust the water's pH value alkaline water is the majority of that coming into the system, there is a pH value of acid treatment. To supply caustic soda adjust pH
There is only one of the more caustic. It can only be used to adjust the pH of alkaline water, the water that comes into the system, the pH of acid waste sodium hydroxide to adjust pH.
There is only one more use of caustic soda Due to the adjustment of pH of water into alkaline, shows that most of the water into the water treatment system is pH acid leads to waste caustic soda in adjusting value. PH.