Preparation method of silicate polymer flocculant rich in active catalyst

A technology of polysilicate and catalyst, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of insufficient removal of organic pollutants, large differences in water quality, complex pollutant components, etc., to avoid long settling time and load capacity Larger, shorter formation time effect

Inactive Publication Date: 2010-05-26
南通立源水业科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the polluted water is complex pollution, the pollutant components are complex, and the water quality varies greatly. The use of existing flocculants is not enough to remove organic pollutants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First, 4 parts by weight of sodium silicate is added to 55 parts by weight of water to make a sodium silicate solution; secondly, the sodium silicate solution is added to 18 parts by weight of concentrated sulfuric acid with a mass concentration of 98% or mass In concentrated hydrochloric acid with a concentration of 37%, after the reaction is complete, a polymeric silicic acid solution with a pH value of 3.5 to 6.5 is obtained; then 12 parts by weight of solid aluminum sulfate reagent and 0.2 parts by weight of MnO are added to the polymerized silicic acid solution 2 Catalyst particles, the diameter of the catalyst particles is 5um, the reaction is complete after stirring, and the polysilicate flocculant rich in active catalyst can be obtained after static aging at last.

Embodiment 2

[0021] First, 6 parts by weight of sodium silicate is added to 60 parts by weight of water to make a sodium silicate solution; secondly, the sodium silicate solution is added to 21 parts by weight of concentrated sulfuric acid with a mass concentration of 98% or mass In concentrated hydrochloric acid with a concentration of 37%, after the reaction is complete, a polymeric silicic acid solution with a pH value of 3.5 to 6.5 is obtained; then 16 parts by weight of solid aluminum sulfate reagent and 0.35 parts by weight of MnO are added to the polymerized silicic acid solution 2 Catalyst particles, the diameter of the catalyst particles is 1 mm, the reaction is complete after stirring, and the polysilicate flocculant rich in active catalyst can be obtained after static aging at last.

Embodiment 3

[0023] First, 8 parts by weight of sodium silicate are added to 65 parts by weight of water to make a sodium silicate solution; secondly, the sodium silicate solution is added to 24 parts by weight of concentrated sulfuric acid with a mass concentration of 98% or mass In concentrated hydrochloric acid with a concentration of 37%, after the reaction is complete, a polymeric silicic acid solution with a pH value of 3.5 to 6.5 is obtained; then 18 parts by weight of solid aluminum sulfate reagent and 0.5 parts by weight of MnO are added to the polymerized silicic acid solution 2 Catalyst particles, the diameter of the catalyst particles is 3 mm, the reaction is complete after stirring, and the polysilicate flocculant rich in active catalyst can be obtained after static aging at last.

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Abstract

The invention relates to a preparation method of a silicate polymer flocculant rich in active catalyst. The preparation method comprises the following steps: firstly, adding 4-5 parts by weight of sodium silicate to 55-65 parts by weight of water to prepare a sodium silicate solution; secondly, adding the sodium silicate solution to 18-24 parts by weight of 98% sulfuric acid or 37% hydrochloric acid under the stirring condition; adjusting the pH value of the mixed solution to be 3.5-6.5; fully reacting to obtain a polymeric silicic acid solution; then, adding 12-18 parts by weight of inorganic salt and 0.2-0.5 parts by weight of catalyst particles to the polymeric silicic acid solution; stirring to fully react; and finally, standing; and curing to obtain the silicate polymer flocculant rich in active catalyst. The catalyst particles comprise one or several of MnO2, FeOOH and TiO2 in any proportion. The silicate polymer flocculant rich in active catalyst, which is prepared by the method, can improve the processing of hardly coagulated water, such as low-turbidity water, algae-contained water, and the like by the synergy of all components.

Description

technical field [0001] The invention relates to a preparation method of a polysilicate flocculant, in particular to a preparation method of a polysilicate flocculant rich in active catalyst. Background technique [0002] The existing conventional flocculants are mainly aimed at the removal of turbidity, and the removal effect on organic pollutants is poor. Many surface waters have problems of difficult flocculation, such as water with high organic content, algae-containing water, low-temperature and low-turbidity water, etc. During the flocculation process, suspended particles are not easy to destabilize, the formation speed of flocs is slow, and the alum flower particles produced are small and difficult. settlement. Most of the polluted water is complex pollution, the pollutant components are complex, and the water quality varies greatly. The use of existing flocculants is not enough to remove organic pollutants. Therefore, it is necessary to provide a new process to prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 张丽刘希邈李昌科范志伟
Owner 南通立源水业科技发展有限公司
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