At the end of the 19th century, dissolved air was first used in the mining industry for the purpose of recovering minerals. The main technical indicator was the mineral recovery rate. In the 1920s, DAF began to be used in water treatment, mainly to remove suspended solids in water. The main technical indicators were the removal rate of suspended materials and the concentration of fluorite-rich solids after treatment. DAF is widely used in industrial wastewater treatment and is also used in wastewater treatment in urban sewage treatment plants.
With the extensive application of DAF technology, China dissolved air flotation also has great development.
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