I would like an advice on one of the most important aspects we are facing.
So Drinking water is produced from seawater through desalination in our power plant and it goes to the whole city. The disinfectant we are using is the chlorine dioxide. There are a lot of reservoirs in the city where they get the same water but they also have the same dosing process of clo2 by hcl & sodium chlorite. The issues is that we find high chlorite values in the inlet of the reservoirs ( which could be a back flow ) and the outlet especially that the demand might be low which makes the water in the reservoir stagnant. The dosing happens before the water reached the reservoir. What is the main reason why chlorite is found high and any advise ?