Chemical agent for removing antimony in printing and dyeing wastewater and removal method of antimony

Abstract

The invention discloses a chemical agent for removing antimony in printing and dyeing wastewater and a removal method of the antimony. The chemical agent comprises a mixture composed of manganese tailing powder and FeSO4, wherein the mixture is solid powder; a main component of the manganese tailing powder is MnOx / SiO2, the grain diameter is 0.075 to 0.100mm and the mass ratio of MnOx / SiO2 / FeSO4 ranges from (1 to 1 to 1) to (1 to 1 to 8); FeSO4 is FeSO4.7H2O, FeSO4.3H2O or anhydrous ferrous sulfate; the removal method comprises the following steps: step 1, putting antimony-containing printingand dyeing wastewater into a pre-treatment tank and carrying out impurity removal pre-treatment, so as to obtain pre-treated antimony-containing printing and dyeing wastewater; step 2, putting the pre-treated antimony-containing printing and dyeing wastewater into a reaction contact tank and adding a certain amount of the chemical agent and contacting and stirring; after reacting for 30 to 60min,thus obtaining reacted antimony-containing printing and dyeing wastewater; step 3, putting the reacted antimony-containing printing and dyeing wastewater into a coagulation precipitation tank, and standing and precipitating; then carrying out solid-liquid separation to remove heavy metal antimony in the printing and dyeing wastewater.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a medicament for removing antimony in printing and dyeing wastewater and a removal method thereof. Background technique [0002] The printing and dyeing industry is one of the basic industries for the development of the national economy. It has grown rapidly since the reform and opening up. my country's printing and dyeing industry has now become the world's largest in scale. However, the printing and dyeing industry consumes a lot of water and the sewage is serious. The printing and dyeing wastewater produced contains a large number of stable and complex chemical substances, such as: dyes, auxiliaries, heavy metals, etc., which pose a huge threat to my country's water environment and become an important part of industrial wastewater treatment. big problem. [0003] Metal antimony (Antimony, Sb) has become a new challenge in the pollution prevention and control of ...

AI Technical Summary

Problems solved by technology

Due to the previous neglect of the monitoring and prevention of antimony pollution in printing and dyeing wastewater, and the traditional wastewater treatment system did not pay attention to the research on antimony removal technology, it is difficult to effectively remove antimony due to the increasing antimony discharge standards in the printing and dyeing industry and the backward traditional wastewater treatment methods. This situation constitutes an increasingly prominent contradiction

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