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Sludge curing agent and production method thereof

A production method and curing agent technology, applied in chemical instruments and methods, fixed/solidified sludge treatment, sludge treatment, etc., can solve problems such as poor economical practicability, poor repair effect, high technical difficulty, etc., and achieve high frost resistance performance, short setting time, and high impermeability

Inactive Publication Date: 2021-02-09
广西云燕特种水泥建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, general physical restoration has poor economic practicability, and it is easy to cause "secondary damage" and "secondary pollution" problems; phytoremediation and microbial restoration technologies are difficult, time-consuming, and repairing effects are poor

Method used

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  • Sludge curing agent and production method thereof
  • Sludge curing agent and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A sludge solidifying agent, made of the following raw materials in parts by weight: 60 parts of sulphoaluminate cement, 40 parts of Portland cement, 40 parts of ultrafine slag powder, 40 parts of fly ash, 10 parts of dispersible latex powder, 10 parts of sodium silicate, 4 parts of calcium hydroxyphosphate, 12 parts of modified nano-montmorillonite.

[0027] The particle size of the ultrafine slag powder is less than 30 μm.

[0028] The redispersible latex powder is acrylic rubber powder or vinyl acetate-ethylene copolymer powder.

[0029] The production method of the modified nano-montmorillonite is as follows: heating the montmorillonite at 150° C. for 5.5 hours, and then grinding and pulverizing to prepare the nano-montmorillonite.

[0030] The production method of described sludge curing agent comprises the steps:

[0031] (1) Grind sulfoaluminate cement, Portland cement, fly ash, sodium silicate, and calcium hydroxyphosphate, and pass through a 200-mesh sieve;

...

Embodiment 2

[0034] A sludge curing agent, made of the following raw materials in parts by weight: 80 parts of sulphoaluminate cement, 25 parts of Portland cement, 55 parts of ultrafine slag powder, 30 parts of fly ash, 6 parts of dispersible latex powder, 6 parts of sodium silicate, 8 parts of calcium hydroxyphosphate, and 8 parts of modified nano-montmorillonite.

[0035] The particle size of the ultrafine slag powder is less than 30 μm.

[0036] The redispersible latex powder is acrylic rubber powder or vinyl acetate-ethylene copolymer powder.

[0037] The production method of the modified nano-montmorillonite is as follows: heating the montmorillonite at 160° C. for 5 hours, and then grinding and pulverizing the nano-montmorillonite to produce the nano-montmorillonite.

[0038] The production method of described sludge curing agent comprises the steps:

[0039] (1) Grind sulfoaluminate cement, Portland cement, fly ash, sodium silicate, and calcium hydroxyphosphate, and pass through a...

Embodiment 3

[0042] A sludge solidifying agent, made of the following raw materials in parts by weight: 100 parts of sulphoaluminate cement, 10 parts of Portland cement, 70 parts of ultrafine slag powder, 20 parts of fly ash, 2 parts of dispersible latex powder, 2 parts of sodium silicate, 12 parts of calcium hydroxyphosphate, and 12 parts of modified nano-montmorillonite.

[0043] The particle size of the ultrafine slag powder is less than 30 μm.

[0044] The redispersible latex powder is acrylic rubber powder or vinyl acetate-ethylene copolymer powder.

[0045] The production method of the modified nano-montmorillonite is as follows: heating the montmorillonite at 170° C. for 5.5 hours, and then grinding and pulverizing to prepare the nano-montmorillonite.

[0046] The production method of described sludge curing agent comprises the steps:

[0047] (1) Grind sulfoaluminate cement, Portland cement, fly ash, sodium silicate, and calcium hydroxyphosphate, and pass through a 300-mesh sieve...

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Abstract

The invention discloses a sludge curing agent and a production method thereof. The sludge curing agent is prepared from the following raw materials in parts by weight: 60-100 parts of sulphoaluminatecement, 10-40 parts of Portland cement, 40-70 parts of superfine slag micro-powder, 20-40 parts of fly ash, 2-10 parts of dispersible latex powder, 2-10 parts of sodium silicate, 4-12 parts of hydroxyl calcium phosphate and 4-12 parts of modified nano montmorillonite. The preparation method comprises the following steps: grinding the sulphoaluminate cement, the Portland cement, the fly ash, the sodium silicate and the hydroxyl calcium phosphate, performing sieving with a 200-300-mesh sieve, adding the superfine slag micro-powder, the dispersible latex powder and the modified nano montmorillonite, and performing sufficient and uniform mixing to obtain a finished product. The sludge curing agent provided by the invention has strong dehydration property, and can effectively adsorb heavy metals in sludge and fix the heavy metals, so that the cured sludge can be recycled.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, in particular to a sludge solidifying agent and a production method thereof. Background technique [0002] Silt refers to the fine-grained soil that is deposited in still water and slow flowing water and contains organic matter. my country has abundant river, lake and tidal flat resources. Due to the slow flow of water, rivers and lakes are easy to produce silt. Dredging in rivers and waterways A large amount of silt will be produced in the construction, widening, and port construction and expansion projects; in addition, a large amount of silt will also be produced in the process of industrial and agricultural production and sewage treatment. These silts have large output, high water content, and high pollutant content. It is difficult to deal with it quickly. The existing treatment methods generally have problems such as environmental pollution, high treatment cost, and long treatment ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/22C02F11/00C02F11/143C02F11/145C02F101/20
CPCC04B28/186C02F11/008C02F11/143C02F11/145C02F2101/20C04B7/323C04B7/02C04B18/141C04B18/08C04B2103/0057C04B12/04C04B22/16C04B14/104
Inventor 黄芳蒙传刚杨毅王志通
Owner 广西云燕特种水泥建材有限公司
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