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Preparation method of resin for removing calcium, magnesium and silicon prepared by PAC flocculant

A flocculant, calcium-magnesium-silicon technology, applied in chemical instruments and methods, cation exchange materials, ion exchange water/sewage treatment, etc., can solve the problems of no unified measurement standard and unstable effect, and save operation and material costs , increase the removal effect and reduce the cost

Inactive Publication Date: 2019-08-06
芜湖沃泰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its characteristics are: less investment in equipment, convenient installation, and low operating costs; but the effect is not stable enough, and there is no unified measurement standard

Method used

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  • Preparation method of resin for removing calcium, magnesium and silicon prepared by PAC flocculant
  • Preparation method of resin for removing calcium, magnesium and silicon prepared by PAC flocculant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of preparation method of the resin that is used to remove calcium magnesium silicon by PAC flocculant, is raw material with cation exchange resin, comprises the following steps:

[0024] Step 1: Pretreatment and cleaning of the cation exchange resin with deionized water;

[0025] Step 2: Prepare a PAC flocculant with a mass fraction of 8%, mix according to the ratio of cation exchange resin: PAC flocculant = 1:50, and then uniformly stir for 3 hours to obtain a mixture;

[0026] Step 3: Drain the liquid in the mixture obtained in Step 2 to obtain Resin 1, then add a mixed solution of 1% NaOH and 1% NaCl in mass fraction to Resin 1, mix and uniformly stir for 2 hours to obtain the mixture ;

[0027] Step 4: Discharge the mixed solution with a mass fraction of 1% NaOH and a mass fraction of 1% NaCl in the mixture formed in step 3 to obtain resin 2, then wash resin 2 with polar solvent ethanol, take out and clean The resin II is then dried and cooled to obtain the...

Embodiment 2

[0032] A kind of preparation method of the resin that is used to remove calcium magnesium silicon by PAC flocculant, is raw material with cation exchange resin, comprises the following steps:

[0033] Step 1: Pretreatment and cleaning of the cation exchange resin with deionized water;

[0034] Step 2: Prepare a PAC flocculant with a mass fraction of 9%, mix according to the ratio of cation exchange resin: PAC flocculant = 1:50, and then uniformly stir for 3.5 hours to obtain a mixture;

[0035] Step 3: Drain the liquid in the mixture obtained in Step 2 to obtain Resin 1, then add a mixed solution of 1% NaOH and 1% NaCl in mass fraction to Resin 1, mix and uniformly stir for 2.5 hours to obtain mixture;

[0036] Step 4: Discharge the mixed solution with a mass fraction of 1% NaOH and a mass fraction of 1% NaCl in the mixture formed in step 3 to obtain resin 2, then wash resin 2 with polar solvent ethanol, take out and clean The resin II is then dried and cooled to obtain the ...

Embodiment 3

[0041] A kind of preparation method of the resin that is used to remove calcium magnesium silicon by PAC flocculant, is raw material with cation exchange resin, comprises the following steps:

[0042] Step 1: Pretreatment and cleaning of the cation exchange resin with deionized water;

[0043] Step 2: Prepare a PAC flocculant with a mass fraction of 10%, mix according to the ratio of cation exchange resin: PAC flocculant = 1:50, and then uniformly stir for 4 hours to obtain a mixture;

[0044] Step 3: Drain the liquid in the mixture obtained in Step 2 to obtain Resin 1, then add a mixed solution of 1% NaOH and 1% NaCl in mass fraction to Resin 1, mix, and stir uniformly for 3 hours to obtain the mixture ;

[0045] Step 4: Discharge the mixed solution with a mass fraction of 1% NaOH and a mass fraction of 1% NaCl in the mixture formed in step 3 to obtain resin 2, then wash resin 2 with polar solvent ethanol, take out and clean The resin II is then dried and cooled to obtain t...

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Abstract

The invention discloses a preparation method of resin for removing calcium, magnesium and silicon prepared by a PAC flocculant, and relates to the technical field of soft water treatment. The PAC flocculant with a mass fraction of 8%-10% is prepared, the PAC flocculant and cation exchange resin are mixed according to the ratio of cation exchange resin: PAC flocculant = 1: 50, and then uniformly stirred for 3h-4h to obtain a mixture; a liquid in the obtained mixture is discharged to obtain resin I, a mixed solution of NaOH with a mass fraction of 1% and NaCl with a mass fraction of 1% is addedto the resin I, mixed, and evenly stirred for 2 to 3 hours to obtain a mixture; the mixed solution with the mass fraction of 1% NaOH and the mass fraction of 1% NaCl in the formed mixture is discharged to obtain resin II, the resin II is cleaned by polar solvent ethanol cleaning, the cleaned resin II is taken out, and then drying and cooling are carried out. The preparation method is beneficial toreducing the production cost of the final product, ensuring the quality of the final product, and is beneficial to large-scale production of the final product and application in the boiler water treatment field.

Description

technical field [0001] The invention relates to the technical field of soft water treatment, in particular to a method for preparing a resin made of PAC flocculant for removing calcium, magnesium and silicon. [0002] Background technique: [0003] The more mineral components such as calcium, magnesium, and silicon in the water body, the greater the hardness of the water. When this kind of hard water is used in boilers or steam locomotives, a layer of "hard scale" or soft scale of calcium carbonate will be formed on the bottom of the boiler and on the pipe wall. After the boiler has been in operation for a long time, a large amount of scale will be deposited on the inner wall. As the heat transfer performance of the scaled boiler deteriorates, it will affect the cooling of the furnace tube, resulting in an increase in the temperature difference on both sides of the heating surface and an increase in the temperature of the furnace tube. As a result, the tube wall is overheate...

Claims

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Application Information

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IPC IPC(8): C02F1/42B01J39/09B01J39/08
CPCB01J39/08B01J39/09C02F1/42C02F2001/425
Inventor 董航田琳
Owner 芜湖沃泰环保科技有限公司
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