摘要：

用H⁺柱—脱气塔—Na⁺柱串联工艺处理“负硬水”。H⁺柱浮动床，Na⁺柱固定床，均采用弱酸性阳离子交换树脂110。处理后的水在满足硬度要求的同时，碱度<1.0 mmol/L，出水体积可高达H+交换柱树脂体积的260倍以上。运行结果表明，工艺具有操作简便、出水稳定、水质良好等优点，是处理“负硬水”非常好的方法。

关键词: 弱酸性树脂, 水处理, 软化, 负硬水

Abstract:

The “negative hard water”is treated by consecutive H⁺ ion exchange, degasification, and Na⁺ ion exchange procedures. The H⁺ ion exchange column is a fluidized bed and the Na⁺ ion exchange column is a fixed bed. In both columns the weak acidic ion exchange resin 110 is used as the packings. The alkality ofthe treated water is less than 1.0 mmol/L under the required hardness, and the volume of produced water is as high as 260 times ofthat in a single H⁺ ion exchange resin column. It is shown that the proposed technology has the advantages of simple operation, stable water production, and high quality of produced water.

Key words: weak acidic resin, water treatment, softening, negetive hard water

中图分类号: 

• TK223.5