Device and process for preparing calcium sulfate whiskers and treating wastewater

The invention relates to a device and process for preparing calcium sulfate whiskers and treating wastewater, the device comprises a hydrothermal reaction kettle, a centrifugal machine, a liquid storage tank and a wastewater treatment system, a material discharged from the hydrothermal reaction kettle enters the centrifugal machine, a solid-state material discharged from the centrifugal machine is collected as a product, and a liquid-state material discharged from the centrifugal machine enters the liquid storage tank to be cooled and then is fed into the wastewater treatment system; the wastewater treatment system comprises a settling zone, a filtering zone and an ion resin exchange zone, wastewater from the centrifugal machine is fed into the settling zone for settling, supernate in the settling zone enters the filtering zone, effluent of the filtering zone is fed into the ion resin exchange zone, and effluent of the ion resin exchange zone is treated new water. The device and the method for preparing the c