Titanium electrode scaling maintenance methods？
Because the concentration of calcium and magnesium ions in the electrolytic solution is too high, the titanium electrode cathode is prone to scaling after a period of electrolysis.
The way it is handled is as follows:
1. In order to reduce sedimentation and scaling, the raw water is softened to remove suspended solids, certain colloidal substances and organic impurities in the raw water, which can prevent or reduce sedimentation and scaling. It can also be pre-treated to remove the hardness of the raw water, which can effectively prevent scaling. The generation of dirt.
2. Pickling method: A small amount of precipitated scale will always be generated during the operation of the electrodialyzer, especially in areas with poor water quality. After the accumulation reaches a certain level, pickling treatment must be carried out. Depending on the situation, regular pickling is a simple and effective way to eliminate precipitation without dismantling equipment. The cycle depends on the actual situation. Generally, 1% to 2% hydrochloric acid is used for cleaning.
3. Use inverted electrodes: regularly switch electrodes to change the migration direction of ions. According to the actual situation, the electrodes are usually switched every 2-8 hours. In recent years, automatic switching of electrodes is frequently used at home and abroad, about 15-30 minutes. , in this way, even slight precipitation will be effectively removed. However, frequent pole reversal requires relatively high quality requirements for the iridium electrode, and the loss of the titanium electrode is large. It is necessary to choose high-quality, corrosion-resistant electrode materials.
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