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Organic matter removal compound flocculating agent

A technology of composite flocculant and organic matter, which is applied in the direction of flocculation/sedimentation water/sewage treatment, water pollutants, water treatment parameter control, etc. It can solve the problem of unsatisfactory removal of polymer organic matter, few commercial products of MC-IPF, Adsorption capacity cannot meet the demand and other problems, to achieve the effect of improving effluent water quality and effluent stability, significant social and economic benefits, and beneficial to removal

Inactive Publication Date: 2018-11-13
芜湖市颂晖商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the increase in production costs or the shortening of the product storage stability period, there are not many commercial products of MC-IPF
The existing flocculants used for drinking water and wastewater treatment are mainly inorganic flocculants, such as polyaluminum ferric chloride, polyferric chloride, etc. When inorganic flocculants are used alone, the flocculation effect is good, but the adsorption capacity cannot meet the demand, and the high Molecular organic matter removal effect is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A composite flocculant for removing organic matter, calculated in parts by weight, comprising the following raw materials:

[0022] 40 parts of polyferric chloride-organic composite flocculant, 16 parts of fly ash modified polyferric sulfate, 14 parts of magnesium citrate, 12 parts of polysilicate flocculant, 6 parts of medical stone powder, and 3 parts of xanthan gum.

[0023] The preparation method of polyferric chloride-organic composite flocculant comprises the following steps:

[0024] Add iron trichloride and aluminum chloride to the aqueous solution of carboxylated chitosan, stir evenly, then add sodium bicarbonate solution dropwise until the degree of alkalinity is 1, then add acrylamide, and then add the stabilizer Na 2 HPO 4 Continue to stir for a certain period of time, and then cool down to room temperature naturally. The molar ratio of iron trichloride, aluminum chloride and carboxylated chitosan is 5:2:0.5, and the molar ratio of said carboxylated chitos...

Embodiment 2

[0026] A composite flocculant for removing organic matter, calculated in parts by weight, comprising the following raw materials:

[0027] Polyferric chloride-organic composite flocculant 35 parts, fly ash modified polyferric sulfate 20 parts, magnesium citrate 12 parts, polysilicate flocculant 16 parts, medical stone powder 4 parts, xanthan gum 2 parts.

[0028] The preparation method of polyferric chloride-organic composite flocculant comprises the following steps:

[0029] Add iron trichloride and aluminum chloride to the aqueous solution of carboxylated chitosan, stir evenly, then add sodium bicarbonate solution dropwise until the degree of alkalinity is 0.5, then add acrylamide, and then add stabilizer Na 2 HPO 4 Continue to stir for a certain period of time, and then cool down to room temperature naturally. The molar ratio of iron trichloride, aluminum chloride and carboxylated chitosan is 5:2:0.3, and the molar ratio of said carboxylated chitosan to said acrylamide is...

Embodiment 3

[0031] A composite flocculant for removing organic matter, calculated in parts by weight, comprising the following raw materials:

[0032] 30 parts of polyferric chloride-organic composite flocculant, 20 parts of fly ash modified polyferric sulfate, 20 parts of magnesium citrate, 8 parts of polysilicate flocculant, 8 parts of fly ash, and 2 parts of xanthan gum.

[0033] The preparation method of polyferric chloride-organic composite flocculant comprises the following steps:

[0034] Add ferric chloride and aluminum chloride to the aqueous solution of carboxylated chitosan, stir evenly, then add sodium bicarbonate solution dropwise until the degree of alkalinity is 1.5, then add acrylamide, and then add stabilizer Na 2 HPO 4 Continue to stir for a certain period of time, and then cool down to room temperature naturally. The molar ratio of iron trichloride, aluminum chloride and carboxylated chitosan is 5:2:0.6, and the molar ratio of said carboxylated chitosan to said acryla...

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Abstract

The invention provides an organic matter removal compound flocculating agent which comprises, by weight, 30-50 parts of polymerization ferric chloride-organic compound flocculating agents, 10-20 partsof modified fly ash polymerized iron sulfate, 10-20 parts of magnesium citrate, 8-16 parts of polysilicic acid flocculating agents, 4-8 parts of agglomeration agents and 2-4 parts of xanthan gum. Thepolymerization ferric chloride-organic compound flocculating agents are mainly prepared from ferric trichloride, aluminum chloride and carboxylated chitosan. The flocculating agent is high in flocculating velocity and adsorption capacity and high water quality applicability, a molecular elongation layer is large in water, ion dispersion is high, negative ion and positive ion matters are effectively removed, the flocculating agent has coagulation sedimentation properties, and effluent quality and effluent stability of a sedimentation tank can be remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of flocculants, and in particular relates to a composite flocculant for removing organic matter. Background technique [0002] Since my country began to apply flocculants in (sewage) water treatment in the late 1960s, inorganic flocculants have always occupied a dominant position in the market due to their low toxicity, low cost, and relatively simple preparation methods. Initially, aluminum sulfate, Aluminum chloride, ferric chloride and other first-generation inorganic salts. In the 1980s, polyaluminum chloride (basic aluminum chloride) (PAC), polyferric chloride (PFC), polyaluminum sulfate (PAS), polyferric sulfate (PFS), polyaluminum phosphate ( PAP) and other second-generation inorganic flocculants—inorganic polymer flocculants (IPF). [0003] In the 1990s, the more distinctive third-generation inorganic flocculants—multi-core inorganic polymer flocculants (MC-IPF): polyaluminum ferric chloride (PAFC),...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54C02F101/30
CPCC02F1/52C02F1/5236C02F1/5245C02F1/5272C02F1/54C02F2101/30C02F2209/08C02F2209/10C02F2209/16
Inventor 汪泽维汪鹏
Owner 芜湖市颂晖商贸有限公司
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