The invention provides a device for accelerating salt obtaining by evaporating brine. The device comprises a light-heat conversion part, a
buoyancy ball and a locking part, wherein the light-heat conversion part wraps the
buoyancy ball, and the locking part fastens the light-heat conversion part. The invention further provides a method for accelerating salt obtaining by evaporating brine. The method comprises the following steps that an
aqueous solution to be treated is added, accessories are selected and assembled, the light-heat conversion part wraps the
buoyancy ball and is fastened by using the locking part, the device is placed in a
water pool, the buoyancy ball floats in the
water pool, the remaining part of the light-heat conversion part stretches into the
water pool to carry out light absorption and light-heat conversion so as to quickly evaporate water absorbed by the light-heat conversion part, the light-heat conversion part carries out
capillary action to quickly supply water. The device and method disclosed by the invention have the beneficial effects that the use effect is excellent, the water
evaporation efficiency can be improved, the production period of salt obtaining by evaporating brine in the
open air can be shortened, and the
treatment time of multiple
sewage such as high-salt waste water, heavy-
metal sewage and printing and
dyeing sewage can be shortened,so that large economic benefit and social benefit can be brought.