Neutralisation
Neutralisation
(OP)
Hi everybody!
I have a task to start a trial period for an industrial WWTP. It is rather simple, rotary drum sieve, equalisation tank with a neutralisation equipment (HCl and CO2 as acid, and NaOH as a base) and that's it. The desired level of pH is 6-9. And the plant is automatic
Concerning the fact that most of the time, the wastewater has good pH value, how should I test the equipment and show it to the investor?
My plan was to set the desired value of pH e.g. 9-10, and than the NaOH pump should start working. When the pH of water gets in the 9-10 interval, I would again set the 6-9 interval in order to start the HCl or CO2 pump.
Is this plan OK? Do you have some suggestions? Are there some potential issues I am not aware of?
Thank you in advance for your answers.
I have a task to start a trial period for an industrial WWTP. It is rather simple, rotary drum sieve, equalisation tank with a neutralisation equipment (HCl and CO2 as acid, and NaOH as a base) and that's it. The desired level of pH is 6-9. And the plant is automatic
Concerning the fact that most of the time, the wastewater has good pH value, how should I test the equipment and show it to the investor?
My plan was to set the desired value of pH e.g. 9-10, and than the NaOH pump should start working. When the pH of water gets in the 9-10 interval, I would again set the 6-9 interval in order to start the HCl or CO2 pump.
Is this plan OK? Do you have some suggestions? Are there some potential issues I am not aware of?
Thank you in advance for your answers.





RE: Neutralisation
RE: Neutralisation
RE: Neutralisation
Acid and caustic chemical reaction times are in the order of 30-60 seconds, the carbon dioxide reaction will be much longer.
RE: Neutralisation
What additional information do you need?
Concerning the fact that I don't have experience with start-ups of neutralisation plants, I wanted to make sure that my plan is OK. Maybe I am not aware of some potential problems. I will have only two days to do the start-up and to give instructions to employees and hand them over the plant, so it is important for me to know every aspect of the start-up.
One additional information that could be of importance: complete plant was installed and chemicals were prepared back in August 2017. Since then it is waiting for the start-up. As far as I know, these chemicals don't have expiration date, right?
RE: Neutralisation