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A medicament for removing antimony in printing and dyeing wastewater and its removal method

A technology for printing and dyeing wastewater and chemicals, applied in chemical instruments and methods, textile industry wastewater treatment, water/sewage treatment, etc., to achieve the effects of uniform particle dispersion, small particle size and large specific surface area

Active Publication Date: 2022-04-05
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A medicament for removing antimony in printing and dyeing wastewater and its removal method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The printing and dyeing wastewater comes from the comprehensive wastewater of a printing and dyeing factory, and the concentration of T-Sb is 1080 μg L -1 , the concentration of CODCr is 1091mg·L -1 , the pH of the water is around 10.1. First, the printing and dyeing wastewater is pretreated, and the impurity components in the printing and dyeing wastewater are filtered out by sedimentation to prevent interference with subsequent experimental results.

[0030] MnO x / SiO 2 / FeSO 4 The preparation of the mixed system matching agent material: the raw material is selected from the iron and manganese tailings of a manganese mining enterprise in Hunan, and the effective component in the tailings is MnO x , after grinding, the particles with uniform particle size are screened out as the components of the medicine, and the MnO x / SiO 2 / FeSO 4 The mass ratio is 1:1:8.

[0031] Such as figure 1As shown, in step 1, the printing and dyeing wastewater is firstly flowed in...

Embodiment 2

[0036] The printing and dyeing wastewater comes from the comprehensive wastewater of a printing and dyeing factory, and the concentration of T-Sb is 1080 μg L -1 , the concentration of CODCr is 1091mg·L -1 , the pH of the water is around 10.1. First, the printing and dyeing wastewater is pretreated, and the impurity components in the printing and dyeing wastewater are filtered out by sedimentation to prevent interference with subsequent experimental results.

[0037] MnO x / SiO 2 / FeSO 4 The preparation of the mixed system matching agent material: the raw material is selected from the iron and manganese tailings of a manganese mining enterprise in Hunan, and the effective component in the tailings is MnO x , after grinding, the particles with uniform particle size are screened out as the components of the medicine, and the MnO x / SiO 2 / FeSO 4 The mass ratio is 1:1:8.

[0038] Such as figure 1 As shown, in step 1, the printing and dyeing wastewater is firstly flowed i...

Embodiment 3

[0043] The printing and dyeing wastewater comes from the comprehensive wastewater of a printing and dyeing factory, and the concentration of T-Sb is 1080 μg L -1 , the concentration of CODCr is 1091mg·L -1 , the pH of the water is around 10.1. First, the printing and dyeing wastewater is pretreated, and the impurity components in the printing and dyeing wastewater are filtered out by sedimentation to prevent interference with subsequent experimental results.

[0044] MnO x / SiO 2 / FeSO 4 The preparation of the mixed system matching agent material: the raw material is selected from the iron and manganese tailings of a manganese mining enterprise in Hunan, and the effective component in the tailings is MnO x , after grinding, the particles with uniform particle size are screened out as the components of the medicine, and the MnO x / SiO 2 / FeSO 4 The mass ratio is 1:1:8.

[0045] Such as figure 1 As shown, in step 1, the printing and dyeing wastewater is first flowed int...

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Abstract

The invention discloses a medicament for removing antimony in printing and dyeing wastewater and a removal method thereof. The medicament includes manganese tailings powder and FeSO 4 Composition of the mixture, the mixture is a solid powder, wherein the main component of manganese tailings powder is MnO x / SiO 2 , particle size 0.075‑0.100mm, MnO x / SiO 2 / FeSO 4 The mass ratio of FeSO is 1:1:1~1:1:8, FeSO 4 for FeSO 4 ·7H 2 O, FeSO 4 ·3H 2 O or anhydrous ferrous sulfate; the removal method includes the following steps: step 1, placing the antimony-containing printing and dyeing wastewater in a pretreatment tank for impurity removal pretreatment, and obtaining the pretreated antimony-containing printing and dyeing wastewater; step 2, placing the antimony-containing printing and dyeing wastewater The antimony-containing printing and dyeing wastewater is placed in the reaction contact tank, and then a certain amount of medicament is added for contact and stirring. After reacting for 30-60 minutes, the reacted antimony-containing printing and dyeing wastewater is obtained; step 3, the reacted antimony-containing printing and dyeing wastewater is placed in the mixing tank. The solid-liquid separation is carried out after static sedimentation in the coagulation sedimentation tank, so as to remove the 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/62C02F103/30
CPCC02F1/5236C02F1/62C02F2103/30
Inventor 刘洪波薛璐璐陈子华符策竿管祥雄陈琳琳牛璐遥李丛宇吕奕成
Owner UNIV OF SHANGHAI FOR SCI & TECH
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