The invention provides a desulfurization
wastewater treatment system. The desulfurization
wastewater treatment system comprises a
wastewater buffer tank, a pretreatment
system, a
bicarbonate medication device and a dual-fluid atomizing
nozzle, wherein the pretreatment
system is arranged at an inlet end of the wastewater
buffer tank; the
bicarbonate medication device is used for adding
bicarbonate into the wastewater
buffer tank; and an
air compressor is connected to an air inlet of the dual-fluid atomizing
nozzle, and a water inlet of the
air compressor is connected with a water outlet of the wastewater buffer tank. After entering a
flue, desulfurization wastewater is evaporated under the action of
waste heat of
flue gas; the desulfurization wastewater reacts with SO3 in
flue gas; the desulfurization wastewater easily generates
decomposition reaction when being heated; by virtue of
carbon dioxide generated in two reactions, the perturbation of liquid drops
cane be further accelerated, and secondary
fog drops are easily generated, and meanwhile, the heat and
mass transfer processes of
fog drops and
flue gas must be accelerated by virtue of reaction between gas and liquid phases; and besides, generated
carbonate can rapidly react with a small amount of soluble
calcium and
magnesium ions in the desulfurization wastewater so as to form a core and release heat, so that the
evaporation time of the
fog drops can be effectively shortened, and a wastewater zero discharging effect is improved.