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Preparation method of novel inorganic polymeric flocculant

An inorganic polymer and flocculant technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, textile industry wastewater treatment, etc., can solve the problems of environmental pollution, deep chromaticity, high organic content, and achieve low cost , the effect of good performance

Inactive Publication Date: 2015-01-28
QINGDAO WINCHANCE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Printing and dyeing wastewater has a large amount of discharge, deep color and high organic content, so direct discharge to rivers and lakes will cause great pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A preparation method of a novel inorganic polymer flocculant, the preparation method comprising the following steps:

[0017] (1) Under normal temperature and pressure, measure a certain amount of sulfuric acid solution and place it in a beaker, titrate it with 0.5mol / L sodium silicate solution, and measure the pH value of the solution with a pH meter at the same time, stop adding when the pH value is 3.5-4.5 ;

[0018] (2) Continue to stir and polymerize for 1.0h, place and age until the solution turns light blue;

[0019] (3) Add a certain amount of 0.5 mol / L aluminum sulfate, 0.5 mol / L iron sulfate, and 0.1 mol / L sodium tetraborate to the aged polysilicate in sequence, wherein the molar ratio of aluminum to silicon added with aluminum sulfate is 1.0, the iron-silicon molar ratio of adding ferric sulfate is 0.2, and the borosilicate molar ratio of adding sodium tetraborate is 0.20;

[0020] (4) Adjust the pH to 2.0-3.0, fully stir with a magnetic stirrer for 1.5 hou...

Embodiment 2

[0024] A preparation method of a novel inorganic polymer flocculant, the preparation method comprising the following steps:

[0025] (1) Under normal temperature and pressure, measure a certain amount of sulfuric acid solution and place it in a beaker, titrate it with 0.5mol / L sodium silicate solution, and measure the pH value of the solution with a pH meter at the same time, stop adding when the pH value is 3.5-4.5 ;

[0026] (2) Continue to stir and polymerize for 2.0 hours, and place it for aging until the solution appears light blue;

[0027] (3) Add a certain amount of 0.5 mol / L aluminum sulfate, 0.5 mol / L iron sulfate, and 0.1 mol / L sodium tetraborate to the aged polysilicate in sequence, wherein the molar ratio of aluminum to silicon added with aluminum sulfate is 2.0, the iron-silicon molar ratio of adding ferric sulfate is 0.5, and the borosilicate molar ratio of adding sodium tetraborate is 0.35;

[0028] (4) Adjust the pH to 2.0-3.0, fully stir with a magnetic sti...

Embodiment 3

[0032] A preparation method of a novel inorganic polymer flocculant, the preparation method comprising the following steps:

[0033] (1) Under normal temperature and pressure, measure a certain amount of sulfuric acid solution and place it in a beaker, titrate it with 0.5mol / L sodium silicate solution, and measure the pH value of the solution with a pH meter at the same time, stop adding when the pH value is 3.5-4.5 ;

[0034] (2) Continue to stir and polymerize for 1.5h, place and age until the solution appears light blue;

[0035] (3) Add a certain amount of 0.5mol / L aluminum sulfate, 0.5mol / L iron sulfate, and 0.1mol / L sodium tetraborate to the aged polysilicate in sequence;

[0036] (4) Adjust the pH to 2.0-3.0, stir fully with a magnetic stirrer for 1.5 hours, put it in a refrigerator at a temperature of 0-4°C and let it stand for 24-28 hours to obtain the boropolysilicate aluminum iron flocculant, wherein The aluminum-silicon molar ratio of adding aluminum sulfate is 1...

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Abstract

The invention discloses a preparation method of a novel inorganic polymeric flocculant, and belongs to the environmental protection field. The preparation method comprises the following steps: 1, transferring a certain amount of a sulfuric acid solution into a beaker at normal temperature under normal pressure, titrating by using 0.5mol / L of a sodium silicate solution, measuring the pH value of the solution by using pH meter while titrating, and stopping the dropwise addition when the pH value is 3.5-4.5; 2, continuously carrying out stirring polymerization for 1.0-2.0h, and allowing the polymerized solution to stand for ageing until the solution is pale blue; 3, sequentially adding a certain amount of 0.5mol / L of aluminum sulfate, 0.5mol / L of iron sulfate and 0.1mol / L of sodium pyroborate into the obtained aged polysilicic acid; and 4, adjusting the pH value to 2-3, fully stirring by using a magnetic stirrer for 1.5h, and allowing the fully stirred solution to stand in a refrigerating chamber with the temperature of 0-4DEG C for slaking for 24-28h to obtain the boron-containing polyaluminum ferric silicate flocculant.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a preparation method of a novel inorganic polymer flocculant. Background technique [0002] Printing and dyeing wastewater has a large amount of discharge, deep color and high content of organic matter, so direct discharge to rivers and lakes will cause great pollution to the environment. Flocculation is a fast and effective water treatment method, so it is necessary to develop efficient and harmless flocculants. [0003] Most of the traditional flocculants are low-molecular, ordinary water purifiers with insufficient specificity. As the research on flocculants becomes more and more extensive, and there are more and more types of flocculants, it is also moving towards high-molecular, composite, natural The direction of development in the direction of type and biological type, and the transformation of products into diversification, specialization, and environ...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F103/30
CPCC02F1/5236C02F2103/30
Inventor 苏建丽
Owner QINGDAO WINCHANCE TECH
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