Wastewater treatment system and method

The invention provides a wastewater treatment system and method. The wastewater treatment system comprises a forward osmosis liquid concentration device and an electrodialysis device. The forward osmosis liquid concentration device is used for increasing the concentration of salts in the wastewater to 7-14%. And the electrodialysis device is arranged at the downstream of the forward osmosis liquid concentration device and is coupled with the forward osmosis liquid concentration device so as to receive the wastewater introduced by the forward osmosis liquid concentration device and prepare salts in the wastewater into acid liquor and alkali liquor. 本发明提供一种废水处理系统与方法。所述废水处理系统包括正渗透液体浓缩装置与电透析装置。正渗透液体浓缩装置将废水中的盐类的浓度提高至7％至14％之间。电透析装置设置于正渗透液体浓缩装置的下游，且与正渗透液体浓缩装置耦接，以接收正渗透液体浓缩装置导入的废水，且将废水中的盐类制成酸液与碱液。