鈉離子交換器是用于降低水中的硬度，生水由上而下通過交換器進(jìn)行軟化，水中含有的鎂、鈣等陽離子與水交換劑的鈉離子互相交換；生水被軟化成為含極少的鈣、鎂、鹽類的水 (稱為軟水)，可用于鍋爐給水及一些工業(yè)用水。由于鈉離子在水中有很大的溶解性不會在鍋爐內(nèi)部結(jié)成硬垢，并且容易排除，進(jìn)入鈉離子交換器的水，應(yīng)經(jīng)澄清過濾處理，基本上不含有懸浮物。經(jīng)交換器軟化后，其剩余硬度不超過0.03毫克當(dāng)量/升。

The machine is for reducing the hardness of water. Raw water goes through the exchanger from top to bottom, to be softened by the sodium ion exchanger inside. The positve ions of Magnesium and Calcium are exchanged with sodium ion then the raw water becomes soft water containing very few ions of Magnesium and Calcium. The soft water can be used for feeding water of boiler and for someindustrial uses. Due to its highly dissolving ability in water, sodium ions will not form hard sediment in the boiler and can be easily removed. Raw water shall be filtered and settled almost without suspended matter before coming into this machine. After being softened in the device, the residual hardness shall be less than 0.03mg equivalent/l.