The picture above shows the salt drying pond in Luchang Yantian not far from here. The author is familiar with it. Sunbathing pond is located in the north of Bohai Bay, with low coast and low water level in intertidal zone. You can use the high tide to flood into the salt drying pool, so that you can dry salt. It has very good salt drying conditions. Located at the seaside, the temperature rises rapidly in spring, and it is high in summer, with less precipitation and large evaporation. The sea-land wind and summer monsoon are superimposed and the wind direction is also high.
Sea salt is made from sea water. Because seawater is easily polluted by human activities and the composition of sea salt is complex, the quality of sea salt is poor. However, these sea salts can be further processed and become our edible salt. Raw salt is a good chemical raw material.
The picture above shows Chaerhan Salt Lake in Qaidam Basin, which is also the largest salt lake in China. How is it formed? During the geological history, strong tectonic movements formed mountains and rifts, in which the terrain was relatively low.
The edible salt sold in the market is mainly lake salt, sea salt and well salt. Their names are named after their origins. According to their nutrient composition table, well mineral salt is the most nutritious, but it is found from the classification table that some edible salts have an additive called' potassium ferrocyanide'.
According to the inquiry, it is no problem for healthy people to eat potassium ferrocyanide in a small amount, but it has certain side effects on special people and will affect the absorption of minerals. Potassium ferrocyanide will decompose in acidic environment, which may cause allergic symptoms in some people. In order to avoid risks, pregnant women, children, the elderly, rehabilitation patients and people with allergies are advised not to eat salt containing potassium ferrocyanide; Hypertension patients eat low-sodium salt and low-sodium food, and people who often eat seafood eat salt without iodine. These are just some suggestions, welcome to discuss!