How to deal with brine in Yexian Salt Plant?

The brine from Yexian Salt Factory can be made into edible brine after purification. According to relevant information, the scientific name of brine in saltworks is brine (also called industrial brine), which is the mother liquor left in the salt pond after salt is made from seawater or salt lake water. The main components are magnesium chloride, calcium sulfate, calcium chloride and sodium chloride, which are bitter and toxic. After evaporative cooling, magnesium chloride crystals are separated out, which are called halogen blocks. After purification, industrial brine can become edible brine, which is a commonly used coagulant for making tofu in the north. It can coagulate protein in soybean milk into gel and analyze the moisture. Tofu made with brine as coagulant has strong hardness, elasticity and toughness.