Based on the purpose of improving the quality of laboratory water, reducing the cost of pure water preparation and prolonging the use time of anion and yang resins, the author used the two-stage electroosmosis method to conduct pure water preparation experiments. The experiment utilizes the principle that the anion-yang membrane can absorb anion and cation in water under a certain voltage condition. After the tap water is pretreated, it undergoes electroosmosis twice, and then passes through a 0.2μm microporous membrane to remove bacteria and impurity particles in the water.
From the experimental results, it can be seen from the table below that the desalination rate of the second-stage electroosmosis is higher than that of the first-stage electroosmosis and RO reverse osmosis.
Experimental conclusion: The preparation of pure water by two-stage electroosmosis has the characteristics of wide selection of water sources, wide application range, low condition requirements, and high purity of water production, which prolongs the service life of the resin and reduces the cost of preparing pure water.
