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Method for preparing poly-silicon-titanium composite flocculant

A technology of composite flocculant and polysilicon, which is applied in the field of water treatment, can solve problems such as aluminum residue, and achieve uniform distribution, good production reproducibility and stability

Inactive Publication Date: 2012-03-28
NANTONG GUANGTAI BIOCHEM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because polysilicate metal salt flocculants mostly contain aluminum metal, these flocculants still have the problem of aluminum residue

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Mix 2.08 g of liquid ethyl orthosilicate (0.01 mol) and 0.91 g of liquid ethyl titanate (0.004 mol) in a container, stir evenly at room temperature, and then dropwise add a molar concentration of 0.1 mol / L of hydroxide Sodium solution 100mL to form a mixed solution; the mixed solution was statically matured for 24 hours to obtain a polysilicon-titanium composite flocculant.

Embodiment 2

[0013] Mix 20.8 grams of liquid ethyl orthosilicate (0.1 mol) and 13.7 grams of liquid ethyl titanate (0.06 mol) in a container, stir evenly at room temperature, and then dropwise add a molar concentration of 0.5 mol / L of hydroxide 400mL sodium solution to form a mixed solution; the mixed solution was statically matured for 48 hours to obtain a polysilicon-titanium composite flocculant.

Embodiment 3

[0015] Mix 3.12 grams of liquid ethyl orthosilicate (0.015 moles) and 1.71 grams of liquid ethyl titanate (0.0075 moles) in a container, stir evenly at room temperature, and then dropwise add a molar concentration of 0.3 mol / L of hydroxide Sodium solution 100mL to form a mixed solution; the mixed solution was statically matured for 36 hours to obtain a polysilicon-titanium composite flocculant.

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PUM

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Abstract

The invention relates to a method for preparing a poly-silicon-titanium composite flocculant. The conventional metal polysilicate flocculants mostly contain aluminum metal, and have the problem of aluminum residue. The method of the invention comprises the following steps of: mixing liquid ethyl orthosilicate and tetraethyl titanate in a container, uniformly stirring at normal temperature, and dropwise adding 0.1 to 0.5 mol / L solution of sodium hydroxide to form mixed solution; and standing and curing the mixed solution for 1 to 2 days to obtain the poly-silicon-titanium composite flocculant.A molar ratio of the added tetraethyl titanate to ethyl orthosilicate is 0.4-0.6:1, and a molar ratio of the total amount of the dropwise added sodium hydroxide to the ethyl orthosilicate is 1-2:1. In the molecule of the poly-silicon-titanium composite flocculant of the invention, silicon and titanium metal ions are uniformly distributed, the production reproducibility and the stability are high,and the poly-silicon-titanium composite flocculant only contains Ti<4+> metal ions besides silicon, does not have the problem of the aluminum residue, and is particularly suitable for the coagulationtreatment of tap water.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a polysilicon-titanium composite flocculant, which is suitable for coagulation treatment of tap water. Background technique [0002] With the rapid economic development, the problem of water pollution in my country has become increasingly serious in recent years. People have been devoting themselves to the development of waste water and water supply water treatment technology, including the indispensable treatment technology of using flocculants to treat domestic water supply and industrial waste water. Compared with other methods, the advantages of water treatment technology using flocculants are simple equipment, easy maintenance and operation, and good treatment effect. The key to the water treatment technology using flocculants is that the chemicals used include inorganic flocculants and organic flocculants. Due to its good flocculation effect, inorganic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
Inventor 聂秋林俞天明
Owner NANTONG GUANGTAI BIOCHEM PROD
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