The invention discloses a method and
system for
combined treatment of boiler
smoke and alkaline waste water and
waste heat utilization. The method belongs to a waste water and
exhaust gas processing method. Firstly, alkaline waste water is sent into an alkali liquor
pool so as to evenly stir
water quality and water amount; then, the obtained mixture is sent into an integral desulfuration
dust collector; the waste water discharged from the desulfuration
dust collector is sent to a water-water
heat exchanger or is directly sent to an
effluent pool after being detected by a temperature sensor; meanwhile, boiler
smoke is sent to the integral desulfuration
dust collector for desulfuration and dust collection after being subjected to
waste heat recovery. Different from the traditional
smoke desulfuration and dust collection method, the method provided by the invention has the advantages that an
aeration mode is adopted to cause the smoke and the waste water to intensively contact, thereby overcoming the problems of big capital construction investment and high operation cost or low desulfuration efficiency of the traditional method; meanwhile, smoke desulfuration, dust collection, smoke
waste heat recovery and waste water waste heat
recovery are cooperatively controlled; and low-grade waste heat is effectively recovered while the high-efficiency desulfuration and dust collection effect is guaranteed.