1、热水洗涤
1. Hot water washing
准备使用的新树脂先用热水反复清洗。阳树脂可用70~80℃的热水,阴树脂(特别是强碱阴树脂)的耐热性较差,可用50~60℃的热水。开始浸洗时,每隔15分钟左右换水一次,浸洗时要不是搅拌,换水4~5次后,可隔30分钟左右换水一次,总共换水7~8次,浸泡至洗涤水不带褐色,泡沫很少时为止。
The new resin for use is cleaned with hot water. The sun resin can be used at 70~80 C of hot water, and the heat resistance of the anion resin (especially the strong alkali anion resin) is poor, and the hot water can be used at 50~60 C. Start every 15 minutes immersion, changing the water once, dip to not stir in water 4 to 5 times, every 30 minutes can change the water once, for a total of 7 ~ 8 times of water, soaking and washing water is brownish, little bubble so far.
2、酸、碱处理
2, acid and alkali treatment
树脂用热水洗涤后装填进柱,再用酸、碱处理。阳树脂用1mol/1HCL缓缓流过树脂层,用量约为树脂体积的2~3倍,约2小时流完,用水稍淋洗后,再用1mol/1NaOH流过树脂层,用量和流速同前。碱流完后,用水淋洗至出水ph9左右,再用1mol/1HCL或0.5mol/1H2SO4将树脂转成H+型,用量为树脂体积的3~4倍,流速与前同。酸流完后,用水淋洗至出水ph6以上时,即可投入运行。
After washing the resin with hot water, the resin is filled into the column and then treated with acid and alkali. 1mol/1HCL slowly through the resin layer of resin Yang, the amount of about 2 to 3 times the volume of the resin, about 2 hours after the water flow, slightly after leaching with 1mol/1NaOH through the resin layer, and the amount of flow with. After the alkali flow is finished, the water is washed to the PH9 of the effluent, then the resin is converted to H+ type by 1mol/1HCL or 0.5mol/1H2SO4, and the dosage is 3~4 times the volume of the resin, and the flow rate is the same as before. When the acid is finished, it can be put into operation when the water is washed to more than ph6 of the water.