Hi, this is a very good ...
Published by alireza Reyhan, Eng
Hi, this is a very good question. When you are using HCl and NaOH for pH adjustment then you will have NaCl as the result. This will increase the electrical conductivity of water. We usually use online TDS meters in industries that are working based on the electrical conductivity (EC) of water so you are experiencing high TDS values.
Now, what to do? If you use an online pH meter that has two switches for low and high then you can control the pH with just a single material HCl or NaOH. Please make sure if you are having a stream in continues process, adjust the flow and put the pH meter prob in a proper place of tank or stream. In case you needed any more details please don`t hesitate and email me: alireza.reyhan@gmail.com
Good luck
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I will check NaCl at treated water, The wastewater to system around 4-8 m3/hr. The pH probe is located discharge nitrification recirculation pump and control pH at 6.8-7.0, Thank you
Published by Panuwat Tohsakul