Symclosene production wastewater processing system and method thereof

Abstract

The invention discloses a symclosene production wastewater processing system and a method thereof. The processing system comprises a wastewater storage tank, a heat exchanger, a transfer pump, an acidification analytic tower, a hydrochloric acid storage tank, a vacuum pump, a chlorine buffer tank, a chlorination kettle, an analytic wastewater storage tank, a sodium bisulfite storage tank, a cyanuric acid generation tank, an alkali lye storage tank, a plate-and-frame filter press, a cyanuric acid recovery tank, a press filtrate storage tank, a membrane filter, a resin adsorption tower, an evaporated crystallizer, a salt storage tank and a condensate reclaimed water pipeline. The processing method comprises the following steps: (1) heating and transportation of wastewater; (2) acidification analysis; (3) effluent reduction after reaction; (4) generation of cyanuric acid; (5) press filtration; and (6) press filtrate aftertreatment. The processing system is scientific and reasonable and the processing method is simple and effective. By the system and the method, the problem that symclosene wastewater cannot reach the discharge standards after treatment and the generated exhaust gas pollutes the air is thoroughly solved; treated water, salt and gas are recycled; and utilization rate of production materials is raised.

Description

[0001] Technical field: [0002] The invention relates to a treatment system and method for industrial production wastewater, in particular to a treatment system and method for trichloroisocyanuric acid production wastewater. [0003] Background technique: [0004] The production method of trichloroisocyanuric acid mainly adopts the liquid caustic method, that is, cyanuric acid and liquid caustic soda generate trisodium cyanurate, and then feeds chlorine gas to generate trichloroisocyanuric acid, but a large amount of Wastewater contains a large amount of sodium chloride and trichloroisocyanuric acid, wherein the recovery value of sodium chloride is low, and trichloroisocyanuric acid compound is a heterocyclic compound containing a triazine ring structure, which is difficult to degrade; currently, Wastewater such as centrifuge mother liquor and washing water produced by the production of trichloroisocyanuric acid is generally treated by dechlorination. After treatment, the exis...

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Problems solved by technology

[0004] The production method of trichloroisocyanuric acid mainly adopts the liquid caustic method, that is, cyanuric acid and liquid caustic soda generate trisodium cyanurate, and then feeds chlorine gas to generate trichloroisocyanuric acid, but a large amount of Wastewater contains a large amount of sodium chloride and trichloroisocyanuric acid, wherein the recovery value of sodium chloride is low, and trichloroisocyanuric acid compound is a heterocyclic compound containing a triazine ring structure, which is difficult to degrade; currently, Wastewater such as centrifuge mother liquor and washing water produced by the production of trichloroisocyanuric acid is generally treated by dechlorination. After treatment, the existing wastewater becomes high-salt water and some trichloroisocyanuric acid remains, resulting in that the treated wastewater still cannot be discharged up to the standard. During the storage process, the wastewater will release some chlorine gas, causing air pollution, which eventually leads to the difficulty of treating the wastewater produced by the production of trichloroisocyanuric acid, and the production raw materials in the wastewater cannot be recycled, resulting in waste of production raw materials

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