| abstract |
The invention discloses a freezing salt separation system and a freezing salt separation method. The freezing salt separating system comprises a precise pretreatment device, a first reverse osmosis device, an electrodialysis device, a carbon remover, a freezing crystallization device, a nanofiltration device, a sodium chloride evaporation crystallization device, an organic matter removing device, a second reverse osmosis device and a miscellaneous salt evaporation crystallization device, wherein the precise pretreatment device, the first reverse osmosis device, the electrodialysis device, the carbon remover, the freezing crystallization device, the nanofiltration device, the sodium chloride evaporation crystallization device and the miscellaneous salt evaporation crystallization device are sequentially connected, and the second reverse osmosis device, the organic matter removing device and the electrodialysis device are sequentially connected. The freezing salt separation system and the freezing salt separation method can achieve the purposes of short process flow, stable operation, relatively mild operation conditions, low investment cost, low final salt impurity rate and zero emission. |