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Method for removing organic antimony in industrial wastewater

A technology for industrial wastewater and organic antimony is applied in the wastewater treatment process to remove harmful metal pollutants in wastewater, and achieves the effects of simple treatment process, high pH value and good removal effect.

Active Publication Date: 2018-01-19
北京中持净水材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the production process of some industrial wastewater, operations such as heating are often required, so the temperature of the generated wastewater is relatively high. If the waste heat in the water can be fully utilized for reaction, it is expected to improve the effect of antimony removal and reduce operating costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: Under high temperature condition (T>45 ℃), the concrete method step of removing organic antimony in industrial waste water:

[0033] i. Use lye to adjust the pH value of antimony-containing wastewater to above 12.5, stir and react for 10 minutes, and remove suspended solids in the water by solid-liquid separation;

[0034] ii. Measure the water temperature T of antimony-containing wastewater, and add persulfate when T>50°C. Among them, persulfate dosage M 过硫酸盐-1 Use the following formula to calculate.

[0035] m 过硫酸盐 =1.2*[M tot-Sb +(COD Cr -BOD 5 ) / 16] / [(T-45) / (T+45)]

[0036] Add the persulfate into the water, fully stir the reaction for 10 minutes; use the solid-liquid separation method to remove the suspended matter in the water;

[0037] iii. Add the mixed solution of calcium salt, magnesium salt, ferrous salt and aluminum salt, react for 5 minutes, add acid solution during the reaction process to make the reaction equilibrium pH range is 6; us...

Embodiment 2

[0039] Embodiment 2: Under high temperature condition (T>45 ℃), the concrete method step of removing organic antimony in industrial waste water:

[0040] i. Use lye to adjust the pH value of antimony-containing wastewater to above 12.0, stir and react for 60 minutes, and remove suspended solids in the water by solid-liquid separation;

[0041] ii. Measure the water temperature T of antimony-containing wastewater, and add persulfate when T>45°C. Among them, persulfate dosage M 过硫酸盐-1 Use the following formula to calculate.

[0042] m 过硫酸盐 =1.2*[M tot-Sb +(COD Cr -BOD 5 ) / 16] / [(T-45) / (T+45)]

[0043] Add the persulfate into the water, fully stir and react for 60 minutes; use the method of solid-liquid separation to remove the suspended matter in the water;

[0044] iii. Add the mixed solution of ferrous salt and aluminum salt and react for 15 minutes. During the reaction, acid solution is added to make the reaction equilibrium pH value range to 9; the method of solid-liqu...

Embodiment 3

[0046] Embodiment 3: Under high temperature condition (T>45 ℃), the concrete method step of removing organic antimony in industrial waste water:

[0047] i. Use lye to adjust the pH value of antimony-containing wastewater to above 12.0, stir and react for 30 minutes, and remove suspended solids in the water by solid-liquid separation;

[0048] ii. Measure the water temperature T of antimony-containing wastewater, and add persulfate when T>45°C. Among them, persulfate dosage M 过硫酸盐-1 Use the following formula to calculate.

[0049] m 过硫酸盐 =1.2*[M tot-Sb +(COD Cr -BOD 5 ) / 16] / [(T-45) / (T+45)]

[0050] Add the persulfate into the water, fully stir and react for 60 minutes; use the method of solid-liquid separation to remove the suspended matter in the water;

[0051] iii. Add ferrous salt solution and react for 10 minutes. During the reaction, acid solution is added to make the reaction equilibrium pH range 8; the solid-liquid separation method is used to remove suspended s...

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PUM

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Abstract

The invention relates to a method for removing organic antimony in industrial wastewater, particularly relates to a method for treating organic antimony in industrial wastewater with relatively high temperature and relatively high pH value. The treatment method can be used for efficiently removing organic antimony in water by sufficiently utilizing the characteristics of high residual heat and high OH-concentration of wastewater through an operation process of organic antimony dissociation-precipitation and organic antimony oxidation-precipitation, treatment cost can be reduced, and an excellent removing effect can be achieved for organic antimony, inorganic antimony, CODCr and various pollutants in water. The method has good application feasibility for industrial wastewater with complex pollutants, has the advantage of simple treatment process without increasing treatment structure, and is easy to popularize and apply.

Description

technical field [0001] The invention relates to a waste water treatment process, in particular to a method for removing harmful metal pollutants in waste water, and is especially applied in the technical field of industrial waste water treatment produced by dyestuff, plastic, adhesive and other production enterprises. Background technique [0002] Antimony (Antimony, Sb) has an atomic number of 51, an atomic weight of 121.75, and valences of -3, +3, +4 and +5. It mainly exists in antimony-containing minerals in nature, such as antimony (Sb 2 S 3 ), antimonite (Sb 2 o 3 )Wait. These minerals are mainly associated with copper, silver and lead ores. Many industrial products contain antimony, including batteries, man-made alloys, tracking missiles, thermal barriers for textiles, plastics, adhesives, paint pigments, catalysts, etc. Related antimony-related industries may become sources of antimony pollution in the environment. The sources of antimony in the environment mainl...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/20
Inventor 刘锐平康勇锋邵凯
Owner 北京中持净水材料技术有限公司
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