中文摘要：

以确保沿海地区工艺用水性能、节约淡水为目标,提出了一种制作淡化海水新工艺。依据电渗析原理,制作小型便携的隔膜电渗析及电解装置,通过2级（或以上）双隔膜电渗析器和隔膜电解器相配合的方法实现对海水的淡化处理,既能更好地进行脱盐,又使生成淡水有较高pH值,提高了水的活性,有利于冲洗海砂等工艺用水要求。用U-I曲线法测试了双隔膜渗析电解器的极限电流,并由此确定各级电解的工作电流。模拟海水淡化试验结果表明,一级流量为100 mL/s左右时,淡化模拟海水（含盐量15 g/L）生成的淡水已符合冲洗海砂等工业的要求（含盐量≤800 mg/L）,pH值9.5左右。将之用于海砂冲洗,可以提高清洗效果,实现既节省河砂又节约淡水的目的。

英文摘要：

For the purpose of ensuring seaside area＇s industrial water quality and conserving plain water,this paper proposed a new technology of desalinating sea water.Based on the principle of electrodialysis,a simple application of membrane electrodialysis and electrolysis was produced;by two（or more） dual diaphragm electrolyzer membrane electrodialysis and matching methods the desalination of seawater was achieved.U-I curve method was adopted to test the limit current of dual diaphragm electrolyzer,and the working current of each level was decided accordingly.The desalination simulation results show that on a flow rate of 100 mL/s or so,the simulated sea water（salt content 15 mg/L） of fresh water generated by washing sand requirements has been met（salinity≤800 mg/L）,and has high pH,which can improve the cleaning effect and achieve a savings of river sand and fresh water conservation purposes.