How to remove flocs from softened circulating water
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After adding scale inhibitors to the circulating water used in our company, many flocculent substances are formed, which often cause blockages in the pipes. To reduce such blockages, we carry out regular wastewater discharge, which in turn increases environmental protection pressures as well as the amount of wastewater discharged. It’s such a waste of water; it really hurts my heart. I’m seeking advice from experts on how to eliminate these flocs in the circulating water.
It should start with optimizing the formulation of the agents, rather than removing these flocs.
Add an intermediate water treatment tank, use flocculants for sedimentation, reuse the clear water, and compress and dry the settled sludge
These flocs are chelates formed from organic matter and calcium and magnesium ions, which precipitate as the temperature rises; this also indicates the limit of calcium and magnesium ions in the circulating water. Either the dosage of chemicals used must be increased or the concentration ratio must be reduced, otherwise scaling is inevitable. To remove such substances, as mentioned on the 3rd floor, adding a sedimentation tank for sedimentation and separation is an option; however, coagulants would likely need to be added as well, and the results might not be very good. Using air flotation yields very good results; I have encountered such situations where adding an air flotation unit resolved the problem.