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A kind of preparation method of industrial water defluoridation agent

A technology for removing fluoride and industrial water, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. Treat system fouling and fluoride contamination of water system, etc., to achieve good fluoride removal effect, simple treatment process and simple preparation.

Active Publication Date: 2015-08-26
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are fluoride-contaminated water systems in industrial production, such as continuous casting turbid rings and OG turbid rings in iron and steel enterprises, which cause fouling in the water treatment system during the advanced treatment of the discharged water.
Moreover, the fluorine pollution of the water system is enlarged during the reuse process, which will directly affect the normal operation of the circulating water system equipment and the heat exchange efficiency of the heat exchange system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] 1. Weigh 20 grams of acrylic acid (CH 2 =CHCOOH) into the neutralization tank.

[0038] 2. Take 38ml of deionized water and add it to the 1# dissolution tank, then add 12 grams of sodium carbonate, stir and dissolve, and make solution 1#.

[0039] 3. Measure 12ml of deionized water and add it to the 2# dissolving tank, then add 2 grams of ferrous hydroxide and 2 grams of aluminum hydroxide, stir and dissolve, and make solution 2#.

[0040] 4. Slowly add the prepared solution 2# into the neutralization tank while stirring continuously.

[0041] 5. Slowly add the prepared solution 1# into the neutralization tank while stirring constantly, there will be a lot of CO 2 Release, do not add too fast, in case the overflow tank runs out of liquid.

[0042] 6. After adding solution 1#, continue to stir to release all the gas until no bubbles are released.

[0043] 7. Use 30% sodium hydroxide solution to adjust the pH value of the solution in the tank to 10.

[0044] 8. Add 3...

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PUM

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Abstract

The invention discloses a preparation method of an industrial water fluorine removal agent, and belongs to the technical field of industrial water fluoride removal. The industrial water fluorine removal agent is prepared from the following synthetic raw materials: acrylic acid, de-ionized water, acrylamide, urea, sodium carbonate, ferrous hydroxide, aluminum hydroxide, 10%-30% sodium hydroxide, active carbon, 10% ethylenediamine, nitrilo, ammonium persulfate, sodium hydrogen sulfite and calcium chloride. The preparation method comprises the following steps: preparing the synthetic raw materials, polymerizing and mixing to prepare the industrial water fluorine removal agent. The preparation method has the advantages that the prepared fluorine removal agent is high and stable in fluorine removal efficiency, and has a good fluorine removal effect on low-fluorine water with fluoride content of 20-50mg / L; a medicament preparation process is simple.

Description

technical field [0001] The invention belongs to the technical field of fluoride removal in industrial water, in particular to a preparation method of an industrial water defluoride agent, which can effectively remove fluoride in industrial sewage. Background technique [0002] With the development of environmentally friendly industries, the trend of industrial systems to use water resources is to recycle production wastewater through further advanced treatment (reverse osmosis desalination) to reduce environmental pollution caused by sewage discharge. However, in industrial production, fluoride pollutes the water system, such as continuous casting turbid rings and OG turbid rings in iron and steel enterprises, which cause fouling in the water treatment system during the advanced treatment of the discharged water. Moreover, the fluorine pollution of the water system is enlarged during the reuse process, which will directly affect the normal operation of the circulating water ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/58C08F220/56C08F220/06
Inventor 徐有康刘旭明
Owner SHOUGANG CORPORATION