1. Check the system again, especially the front end. For example, if the COD is too high, the organic matter will consume available chlorine and reduce its sterilization efficiency. However, if the disinfection dose is too high, I won't say it. I've seen it scrapped because of RO.
2, with professional membrane cleaning solution cleaning (useful homemade sodium bisulfite is advisable)
3. The analysis of online thermal disinfection, semi-automatic disinfection and detection of dosing disinfection is different, depending on the specific equipment, such as whether there is an intermediate water tank, whether the intermediate water tank is polluted and so on.
4. It is really impossible to add a set of disinfection water tank alone. Although we don't advocate ultraviolet disinfection of threads, ultraviolet disinfection of water tanks does have obvious effects and will definitely solve the problem.