Regarding the regeneration of the softener
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Project Overview: 1. The raw water is tap water； 2. Process: Raw water tank — Raw water pump — Sand filter — Carbon filter — Softener — Primary high-pressure pump — Primary RO — Intermediate water tank — Secondary high-pressure pump — Secondary RO — Pure water tank — Transfer pump. 3. The regeneration of the softener is carried out using a 10% NaCl solution. Question: Should tap water, carbon-filtered water, or RO-treated water be used to dissolve NaCl?
I don’t understand pure water. It seems the dean specifically logged in to reply to this post!
Tap water can be used, as industrial sodium chloride is not very pure to begin with; it would be a waste to use water that has undergone further treatment for this purpose.
Tap water is used on-site. If the owner insists on using RO-treated water, at the very least carbon-filtered water should be used. It was also said that tap water cannot be used as a source of water for regeneration in such projects. Thank you for the reply.
Our company uses soft water as reclaimed water; using RO water in combination with it is a bit wasteful.
The owner has the money to be arbitrary; it’s probably a state-owned or central-state enterprise, right? If it’s a private enterprise that is concerned about operating costs, then it’s sufficient to ensure that it can function.
The water output from a first-stage softener is sufficient; there is no need to use RO-treated water. Another point is that the saltwater concentration should be kept at 6-8%,; 10% is not necessary. Of course, if the concentration is 10%, it’s also possible to use raw water to dissolve industrial salt, but the concentration must not be lower than 10%. Raw water from the northern regions is not suitable for this purpose, while that from the southern regions can be used.