A small survey on pickled Kai film
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Let’s do a small survey: 1. When do you wash the KAI membrane? What is the basis for making the judgment (for example, when the liquid level in the feed tank reaches 60%)? 2. When everyone is pickling the Kai membrane, do they go over the partition board? 3. If it passes through the ceiling board, will there be a strong odor? 4. How long does the salt-acid cycle generally last? Or in other words, how long is it usually soaked in salt and acid?
Answer: 1. When the level in the sump is high and the membrane flux decreases, acid cleaning is required； 2. Pickling requires the liquid to cover the ceiling grid ； 3. The odor is very strong; of course, this depends on the chloride content in the saltwater – the higher the concentration, the stronger the odor. When it’s that intense, it’s impossible to enter the factory building at all ； 4. The acid cycle usually works fine after more than 2 hours.