Resource utilization method for circulating water cooling pollution discharge of thermal power plant

The invention provides a thermal power plant circulating water cooling sewage recycling method, and belongs to the technical field of environmental protection, the method comprises the following steps: softening circulating cooling sewage by lime soda to remove temporary calcium and magnesium ions, and conveying the generated softened sludge to a desulfurization system to be used as a desulfurization agent; further removing suspended matters from the effluent softened by the lime soda through an ultrafiltration system to obtain ultrafiltration produced water, and recovering ultrafiltration concentrated water and backwashing discharge water to the front section of the lime soda softening process to realize solid-liquid separation; ultrafiltration produced water passes through a sulfate radical adsorption device; the adsorption filtrate is subjected to reverse osmosis concentration, and reverse osmosis produced fresh water is recycled to a circulating cooling water system; reverse osmosis concentrated water pas