微滤是利用微滤膜的筛分机理，在压力驱动下，截留直径在0.1～1μm之间的颗粒，如悬浮物、细菌、部分病毒及大尺寸胶体，多用于给水预处理系统。

Microfiltration is based on the principle of sieving by MF membrane. Driven by pressure the particles with diameters ranged from 0.1 to 1μm such as SS, bacteria, virus and large size colloid shall be trapped. This method is generally used in the water supply pretreatment system.  

    离子交换是通过离子交换树脂，与水中可交换离子之间发生可逆性交换，从而去除离子，广泛应用于锅炉给水处理系统。

Ion exchange is a method to perform reversibility exchange with exchangeable ions in water by resin to remove ions, which is widely used in the boiler feedwater  treatment system.    

u 工艺成熟可靠

u 建设投资费用低

u 出水水质高，常作为深度化学除盐

u Mature and reliable process

u Low cost for construction

u High effluent water quality, often used for advanced chemical desalination