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Preparation method of biological sand-solidification water-retention repairing agent

A restorative agent and biological technology, applied in the field of cleaning, can solve the problems of low efficiency of asphalt stabilized sandy soil, inconvenient construction, increased water loss, etc., achieve excellent water absorption and water retention performance, improve quality and efficiency, and reduce fertilizer loss.

Active Publication Date: 2013-10-23
甘肃圣大方舟马铃薯变性淀粉有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many disadvantages in the application of asphalt emulsion sand fixation: the efficiency of asphalt in stabilizing sandy soil is low, and the dosage is large; asphalt is hydrophobic, and a large amount of application will lead to a decrease in soil water seepage capacity and increased water loss, which is not conducive to plant growth; limited by the source of asphalt raw materials , the cost of large-scale promotion and use is too high
(2) Synthetic polymer sand-fixing agent is a kind of high-efficiency sand-fixing material. Due to limited petroleum resources and high price, its popularization and application in my country is restricted.
Urea-formaldehyde resin is currently the cheapest synthetic polymer material, but the main problems of urea-formaldehyde resin as a sand-fixing material are: too fast curing speed, inconvenient construction; high viscosity, poor water solubility, difficult to apply uniformly and conveniently in sandy soil ; And free formaldehyde is not good for construction workers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The biological sand-fixing and water-retaining restoration agent consists of restoration agent Ⅰ and restoration agent Ⅱ, and the preparation method of the restoration agent Ⅰ is as follows:

[0023] 1. Mix 40kg of carboxymethyl starch with a substitution degree of 0.6 and 60kg of carboxymethyl cellulose with a substitution degree of 0.7;

[0024] 2. Then use 86% alcohol to prepare a suspension with a mass ratio concentration of 30%. At a temperature of 50°C, add 0.3kg of epichlorohydrin, stir and react for 1.5 hours, filter, dry, and pulverize to obtain a solid;

[0025] 3. Add 0.1kg of disodium iron ethylenediaminetetraacetic acid, 0.01kg of boric acid, 0.01kg of manganese sulfate, 0.01kg of potassium dihydrogen phosphate, and 0.005kg of ammonium nitrate to the obtained solid, and mix well to obtain the solid restoration agent Ⅰ;

[0026] 4. Add water to the solid restorative agent Ⅰ to prepare an aqueous solution with a concentration of 2% by mass to obtain the liqui...

Embodiment 2

[0029] The biological sand-fixing and water-retaining restoration agent consists of restoration agent Ⅰ and restoration agent Ⅱ, and the preparation method of the restoration agent Ⅰ is as follows:

[0030] 1. Mix 50kg of carboxymethyl starch with a substitution degree of 0.7 and 50kg of carboxymethyl cellulose with a substitution degree of 0.8;

[0031] 2. Then use 82% alcohol to prepare a suspension with a mass ratio concentration of 35%. At a temperature of 55°C, add 0.1 kg of phosphorus oxychloride, stir for 2 hours, filter, dry, and pulverize to obtain a solid;

[0032] 3. Add 0.1kg of disodium iron ethylenediaminetetraacetic acid, 0.01kg of boric acid, 0.01kg of manganese sulfate, 0.01kg of potassium dihydrogen phosphate, and 0.005kg of ammonium nitrate to the obtained solid, and mix well to obtain the solid restoration agent Ⅰ;

[0033] 4. Add water to the solid restorative agent I to make an aqueous solution with a concentration of 4% by mass to obtain the liquid repai...

Embodiment 3

[0036] The biological sand-fixing and water-retaining restoration agent consists of restoration agent Ⅰ and restoration agent Ⅱ, and the preparation method of the restoration agent Ⅰ is as follows:

[0037] 1. Mix 60kg of carboxymethyl starch with a substitution degree of 0.7 and 40kg of carboxymethyl cellulose with a substitution degree of 0.7;

[0038] 2. Then use 82% alcohol to prepare a suspension with a mass ratio concentration of 30%. At a temperature of 55°C, add 0.3 kg of sodium trimetaphosphate, stir for 1 hour, filter, dry, and pulverize to obtain a solid;

[0039] 3. Add 0.1kg of disodium iron ethylenediaminetetraacetic acid, 0.01kg of boric acid, 0.01kg of manganese sulfate, 0.01kg of potassium dihydrogen phosphate, and 0.005kg of ammonium nitrate to the obtained solid, and mix well to obtain the solid restoration agent Ⅰ;

[0040] 4. Add water to the solid restorative agent Ⅰ to prepare an aqueous solution with a concentration of 3% by mass to obtain the liquid re...

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PUM

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Abstract

The invention discloses a preparation method of a biological sand-solidification water-retention repairing agent which comprises repairing agents I and II. The repairing agent I is prepared by the following steps: mixing carboxy methyl starch and carboxymethyl cellulose according to a certain ratio, preparing a fluid suspension by the use of a certain concentration of alcohol, carrying out a crosslinking reaction by adding a cross-linking agent at a certain temperature, filtering, drying and crushing to obtain a solid, adding sodium ferric EDTA, boric acid, manganese sulfate, potassium dihydrogen phosphate and ammonium nitrate, and uniformly mixing to obtain a solid repairing agent I; and making the solid repairing agent I into an aqueous solution so as to obtain a liquid repairing agent I. The repairing agent II is a water-retaining agent prepared from crop straw used as a raw material. According to the invention, starch and cellulose are used as biomass raw materials, cause no pollution to the environment and can undergo biodegradation; and with the combination of a sand-solidification dust-depressor, the water-retaining agent and a fertilizer, the biological sand-solidification water-retention repairing agent can be used to rapidly improve desertified land and create good water and soil conditions for plant growth, survival rate of plants can be raised, and ecological and environmental quality can be improved.

Description

technical field [0001] The invention belongs to the field of cleaning technology, and in particular relates to a method for preparing a bio-sand-fixing water-retaining restoration agent by using modified starch and modified cellulose as raw materials in combination with a water-retaining agent and a plant nutrient solution. Background technique [0002] China is one of the countries with the most severe desertification in the world. In the 1950s and 1960s, the desertified land in my country expanded by 1560km every year. 2 , 2100 km in the 1970s and 1980s 2 , 2400 km in the 1990s 2 . With the accelerated development of desertification, sudden wind and sand disasters—sandstorms occur more and more frequently, seriously polluting the environment and causing huge economic losses; develop low-cost, high-efficiency, and environmentally friendly chemical sand-fixing polymer materials It is imperative. [0003] Chemical sand fixation is to apply organic or inorganic chemical ma...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 田映良马青斌何邵凯崔芸
Owner 甘肃圣大方舟马铃薯变性淀粉有限公司
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