Method for removing heavy metal ion from aqueous solution by using potassium tetratitanate

A technology of heavy metal ions and potassium tetratitanate, applied in the field of water treatment, can solve the problems of complex process, high cost, long treatment process and the like

Inactive Publication Date: 2003-02-05
HONGJIE LIGHT IND WUXI CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the above method, although the heavy metal ions in the aqueous solution can be re

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The first step is to prepare potassium tetratitanate whiskers

[0027] First, mix

[0028] According to the titanium source (TiO 2 ): Potassium source (K 2 (2)=1.9 molar ratio, titanium source and potassium source are put into the ball mill and mixed to make a mixture;

[0029] After that, sintering

[0030] Put the above mixture into a box furnace with a temperature of 1050°C, and sinter for 60 minutes to make it a molten body;

[0031] Afterwards, quench

[0032] The above-mentioned melt was rapidly cooled using a double roll machine. The method is to pass circulating cooling water into the two rollers of the double-roll machine, so that the above-mentioned molten body enters from the upper part of the double-roll machine, and is extruded into thin sheets by the two rollers while being quenched;

[0033] Afterwards, scatter

[0034] According to the ratio of the above-mentioned flakes: pure water = 1:10, put the above-mentioned flakes and pure water into the re...

Embodiment 2

[0045] The first step is to prepare potassium tetratitanate whiskers

[0046] First, mix

[0047] According to the titanium source (TiO 2 ): Potassium source (K 2 (2)=2.2 molar ratio, titanium source and potassium source are put into the ball mill and mixed to make a mixture;

[0048] After that, sintering

[0049] Put the above mixture into a box furnace with a temperature of 900°C and sinter for 120 minutes to make it a molten body;

[0050] Afterwards, quench

[0051] The above-mentioned melt was rapidly cooled using a double roll machine. The method is to pass circulating cooling water into the two rollers of the double-roll machine, so that the above-mentioned molten body enters from the upper part of the double-roll machine, and is extruded into thin sheets by the two rollers while being quenched;

[0052] Afterwards, scatter

[0053] According to the ratio of the above-mentioned flakes: pure water = 1:30, put the above-mentioned flakes and pure water into the rea...

Embodiment 3

[0064] The first step is to prepare potassium tetratitanate whiskers

[0065] First, mix

[0066] According to the titanium source (TiO 2 ): Potassium source (K 2 (2)=2.5 molar ratio, titanium source and potassium source are put into the ball mill and mixed to make a mixture;

[0067] After that, sintering

[0068] Put the above mixture into a box furnace with a temperature of 1200°C and sinter for 240 minutes to make it a molten body;

[0069] Afterwards, quench

[0070] The above-mentioned melt was rapidly cooled using a double roll machine. The method is to pass circulating cooling water into the two rollers of the double-roll machine, so that the above-mentioned molten body enters from the upper part of the double-roll machine, and is extruded into thin sheets by the two rollers while being quenched;

[0071] Afterwards, scatter

[0072] According to the ratio of the above-mentioned flakes: pure water = 1:48, put the above-mentioned flakes and pure water into the reac...

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PUM

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Abstract

The potassium tetratitanate whiskers are used, and made into ion exchange column, the aqueous solution containing heavy metal ions is passed through said ion exchange column so as to remove the heavy metal ions from said aqueous solution, in which the potassium tetratitatnate whiskers can be made up by adopting the steps of mixing, sintering, quenching, dispersing treatment, separation, washing and high-temp. crystallization and sintering. Said ivnention is applicable to treatment of underground water source, other water source, industrial waste water containing heavy metal ions and nuclear waste liquor containing radioactive heavy metal ions.

Description

technical field [0001] The invention relates to a water treatment method. Specifically, it is a method of removing heavy metal ions in drinking water, industrial waste water or nuclear waste liquid with potassium tetratitanate. Background technique [0002] As we all know, groundwater or other water sources in some areas contain heavy metal ions harmful to human body such as cadmium ions, lead ions and mercury ions. If they are not treated and drunk directly, it will lead to the occurrence of endemic diseases. In addition, some enterprises, especially those related to minerals, also contain heavy metal ions in industrial wastewater. However, due to the low content of heavy metal ions and no recycling value, they are generally not recycled and discharged directly, which will pollute the environment. On the other hand, the radioactive heavy metal ions in the nuclear waste liquid of the nuclear industry will also cause serious harm to the human body and the environment. [0...

Claims

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Application Information

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IPC IPC(8): C02F1/42C02F1/62
Inventor 黄继芬张毅蒋志杰
Owner HONGJIE LIGHT IND WUXI CITY
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