Method of producing soil and ground propping composition

FIELD: chemistry.

SUBSTANCE: invention relates to soil and ground chemical propping methods and can be used in agriculture against water and wind erosion, as well as in construction of roads and other earth structures. The method involves mixing aqueous solutions of an anionic polyelectrolyte and a cationic polyelectrolyte and a water-soluble salt. The polyelectrolytes are mixed with their total initial concentration ranging from 1 to 10 wt % in a ratio at which content of charged links of one polyelectrolyte is equal to 5-50% of the content of charged links of the other polyelectrolyte and concentration of at least one salt, selected from a group comprising an alkali metal salt, an ammonium salt, a calcium salt and a magnesium salt, ranges from 0.01 to 0.1 wt %.

EFFECT: low content of salt in the composition and lower consumption rate of the composition.

7 cl, 7 ex

 

The invention relates to the field of methods of chemical fixation of soils and can be used in agriculture to fight against water and wind erosion, as well as the construction of roads and other earthworks.

There is a method of making a composition for fixing and soils by dissolution in water separately polyethylenimine (PAYS) and polyacrylic acid (PAC), adding the resulting solution PAK calculated quantity of ammonia, followed by mixing the resulting solution with the previously obtained solution PAYS (A.S. USSR №642411, CL IS 7/36, 1979).

There is a method of making a composition for fixing and soils by mixing aqueous solutions of hydrolyzed polyacrylonitrile (GIPAN) and polydimethyldiallylammonium (DMDAAC) (A.S. USSR №1507771, CL 08L 33/00, 1989).

Closest to the claimed is known previously proposed a method of obtaining a composition for fixing and soils by mixing aqueous solutions of anionic polyelectrolyte (PE) - sodium salt PAK (sodium-PAK), or GIPAN, or sodium salt of carboxymethyl cellulose (sodium CMC) and cationic polyelectrolyte DMDAAC and a water-soluble salt of a mixture of alkali metal salts or ammonium salts of calcium or magnesium, and the components of the composition are mixed in the following source their concentric and, wt.%: anionic PE - 0,5-3,0; cationic PE - 0,3-3,0; salt of an alkali metal or ammonium - 1,2-2,7; a salt of calcium or magnesium - 0,3-1,0; water - other (patent of Russia №2142492, CL SC 17/00, 1998, prototype).

The disadvantage of this method is that the composition contains a lot of salt (1.5 to 3.7 wt.%) and has a relatively high rate when processing them soil (1-2 l/m2), which inevitably leads to the salinization of the soil.

An object of the invention is to develop a method of obtaining a composition for fixing soils and soils with low content of salt in the composition and a reduced consumption rate of the composition during processing them with soil.

Preliminary experiments were carried out with different PH and salts, in which it was found that the specified technical result is achieved only when the known method of making a composition for fixing and soils by mixing aqueous solutions of anionic PE and a cationic, PH and soluble salts PE is mixed with the total initial concentration from 1 to 10 wt.% the ratio at which the content of charged parts of a single PE is from 5 to 50% of the content of charged parts of another PE, and concentration of at least one salt selected from the group comprising the alkali metal salt, ammonium salt, salt Kahle is Oia, salt of magnesium, 0.01 to 0.1 wt.%.

In the proposed method, the sequence of adding the individual components in principle irrelevant. It is possible to aqueous solution of anionic PE to add an aqueous solution of cationic PE or Vice versa. Water-soluble salt can be introduced in solid form or in the form of its aqueous solution. When this salt can be mixed with an aqueous solution of one of the PE, or mix salt with an aqueous solution of each PE, or add it to the mixture of aqueous solutions of anionic PE and cationic PE.

As aqueous solutions you can use water or aqueous solutions of salts. This can be used as ordinary tap water, well or artesian water, and prepared in a special way, for example distilled water. Mix dry anionic PE and cationic PE or mixing the suspension of these components in organic media does not lead to the formation of the product.

As salt can be used at least one water-soluble salt selected from the group comprising the alkali metal salt, ammonium salt, calcium salt, magnesium salt, and the salt should be taken in experimentally found the number as low as 0.01-0.1 wt.%. With less than indicated in the formula, the salt content of the composition is inhomogeneous, which leads to the Fort is the key inhomogeneous properties of the coating on the treated surface of the soil. More than one specified in the formula, the salt content leads to undesirable soil salinization, poor fertility, and the phasing out of agricultural use.

In the present invention as anionic PE you can use any water-soluble PE, such as PAK, GIPAN, sodium CMC, etc. as cationic PE you can use any water-soluble cationic PE, for example alkilirovanny poly-N-vinylpyridine, DMDAAC, polyhexamethyleneguanidine chloride (PMGH), etc. While the molecular weight of the polymers may vary within wide limits, for example from one kilodalton to several thousand kilodaltons. Water-insoluble polymers may be used in this solution.

The proposed technical solution was experimentally found optimal total initial concentration, PH, ranging from 1 to 10 wt.%. When the content of polymer component is less than the specified lower limit of the low efficiency of fixation, that is, the composition does not form a crust on the soil surface. Higher contents of components increases the viscosity of the composition and increases its rate of consumption for treated soil layer and achieve the desired efficiency of the fastening.

Also it has been experimentally found to be optimal content of charged parts of a single PE, stood the Commissioner from 5 to 50% of the content of charged parts of another PE. Thus the sign of the charge taken in excess PE principal does not matter, you have taken PE can prevail as anionic units and cationic units. When the content of charged parts of one PE less than 5% of the content of charged units other PE worsen structural properties of the composition for fixing the soil and increases the consumption rate of the composition. When the content of charged parts of one PE more than 50% to maintain the homogeneity of the composition is required to make it more water-soluble salts, which inevitably leads to undesirable soil salinization and soil.

The mass ratio between the original anionic and cationic PE can be determined by calculation based on the total initial concentration, the desired ratio of oppositely charged parts of the PE and the molecular weight of the charged units. Here is an example calculation of the mass ratio for cationic polyelectrolyte DMDAAC with the molecular mass of a charged link 162 Dalton and anionic polyelectrolyte sodium-PAK with a molecular mass of a charged link 94 Dalton. To obtain from them the desired product with a content of positively charged parts DMDAAC 25% of the content of negatively charged parts of the sodium-PAK should take DMDAAC and sodium-PAK in the ratio of 0.25×162)/94, respectively, that is, 40,5/94. Still the way mass content will be DMDAAC 40,5/(40,5+94)=40,5/134,5=0,301, or 30.1 per cent of the total initial mass of PE, and the content of sodium-PAK will be 69,9% of the total initial mass of PE. Hence, to obtain, for example, 10,000 g of the composition with 5%of the initial concentration of PE, it is necessary to take DMDAAC in the amount of 500×0,301=150,5 g and sodium-PAK in the number 349,5, To obtain compositions of different formulations it is necessary to carry out the corresponding calculation.

In the claims the distinctive characteristic is the ratio of charged units taken PE - introduced in distinctive part of the formula. The validity of such an introduction is due to the fact that in the known technical solution, selected as a prototype, the content of charged parts of a single PE is 7.2 to 100% of the content of the links of the other PE (calculation performed according to the description given in the previous paragraph), and from 5 to 50%. Thus, experimentally we established the optimal interval is beyond the scope described in the prototype.

Obtained using the proposed method, the composition is applied by sprinkling method on the soil surface or soil at the rate of 0.5-0.8 l/m2. When drying on the soil surface or soil soil is formed polymer crust, the thickness of which is determined by the contents of the components in the composition, its flow and, accordingly, the depths of the second penetration. Samples of soil and soil treated with the proposed composition and in erosion trays were dried and tested in a wind installation with the air flow rate of 8.0-16.7 m/S. the Effectiveness of consolidation of the soil was determined by the amount of soil removed from the surface of the sample.

The advantages of the proposed method are illustrated in the following examples.

Example 1.

Mix 5.0 g NaCl with 3.995 g of an aqueous solution of cationic polyelectrolyte sodium CMC containing of 47.8 g of the polymer, and then the resulting solution is mixed with 6,000 g of an aqueous solution of anionic PE poly-N-ethyl-4-vinylpyridinium (PVP)containing at 52.2 g of polymer. Get 10.000 g of the composition. The total initial concentration of PE is 1.0 wt.%, the content of charged parts of sodium CMC is 50% of the content of charged units PITCH and the concentration of NaCl 0.05 wt.%. Get the composition that the sprinkling method is applied to the surface of samples of sandy loam soil in erosion trays, and after drying the samples they are tested in a wind installation with the air stream velocity of 8.0 m/s, with a consumption rate of 0.8 l/m2. The effectiveness of consolidation of the soil is 96±1%. Formed on the soil surface coating has good resistance.

Example 2.

Mixing 1,000 g of an aqueous solution l containing 1 g of salt, with 4.00 g of an aqueous solution of cationic polyelectrolyte DMDAAC, containing 181,5 g of polymer. Then the resulting solution is mixed with 5,000 g of an aqueous solution of anionic polyelectrolyte PAK containing 318,5 g of polymer. The total initial concentration, PH is 5.0 wt.%, the content of charged units DMDAAC is 25% of the content of charged units PAK and concentration l2is 0.01 wt.%. Get 10.000 g of the composition, which method of irrigation applied to the surface of soil samples taken from the beach nepheline tailings located in the erosion trays, with a consumption rate of 0.5 l/m2. After drying, samples of their experience in the wind installation with the air flow rate of 16.7 m/s Efficiency consolidate the soil is 95±1%. Formed on the surface of the primer coating has good resistance.

Example 3.

Mix 5.0 g MgSO4with 4.995 g of an aqueous solution of cationic polyelectrolyte GMGH containing 241,2 g of polymer. Then mix 5.0 g MgSO4with 4.955 g of an aqueous solution of anionic PE potassium salt of poly (methacrylic acid (potassium-PMAC)containing a high of 58.8 g of polymer. The resulting solutions are mixed with each other. The total initial concentration, PH is 3.0 wt.%, the content of charged parts of potassium PMAC is 35% of the content of charged units PMGH and concentration of MgSO4equal to 0.1 wt.%. what are square-10.000 g of the composition, which the sprinkling method is applied to the surface samples of soil that are in the erosion trays, with a consumption rate of 0.6 l/m2. After drying, samples of their experience in the wind installation with the air stream velocity of 12.0 m/s Efficiency consolidate the soil is 96±1%. Formed on the surface of the soil floor has good water resistance.

Example 4.

Mix 500 g of an aqueous solution Kl containing 1.0 g Kl, with 5,500 g of an aqueous solution of cationic PE poly-N-ethyl-4-vinylpyridinium (PITB)containing 544,2 g of polymer. Then mix 500 g of an aqueous solution of K2SO4containing 1.0 g K2SO4with 3.500 g of an aqueous solution containing 55.8 g of anionic PE potassium salt PAK (potassium-PAK). The resulting solutions are mixed with each other. Get 10.000 g of the composition with the initial concentration, PH of 6.0 wt.%, content of charged parts of potassium-PAK 20% of the content of charged units PITS and salt concentration equal to 0.02 wt.%. The resulting mixture by sprinkling method is applied to the surface of the samples loamy soil in erosion trays, with a consumption rate of 0.7 l/m2. After drying, samples of their experience in the wind installation with the air stream velocity of 10 m/S. the Effectiveness of consolidation of the soil is 95±1%. Formed on the surface of the soil is the discovery has good water resistance.

Example 5.

Mix 850 g of an aqueous solution of cationic polyelectrolyte DMDAAC containing 25,0 g of polymer, with 9.149 g of an aqueous solution of anionic polyelectrolyte sodium CMC containing 975,0 g of the polymer, and then the resulting mixture was mixed with 0.1 g CaCl2and 0.9 g of NH4CL. Get 10.000 g of the composition with the total initial concentration of PE 10 wt.%, content of charged units DMDAAC 5% of the content of charged parts of sodium CMC and salt concentration of 0.01 wt.%. The resulting mixture by sprinkling method is applied to the surface of the samples of forest soil in erosion trays, with a consumption rate of 0.6 l/m2. After drying, samples of their experience in the wind installation with the air stream velocity of 8.0 m/S. the Effectiveness of consolidation of the soil is 96±1%. Formed on the soil surface coating has good resistance.

Example 6.

Mix 900 g of an aqueous solution of anionic PE ammonium salt polyacrylic acid (ammonium-PAK), containing of 60.5 g of polymer, and 9,000 g of an aqueous solution of cationic polyelectrolyte DMDAAC containing 439,5 g of the polymer, and then the resulting mixture was added 100 g of an aqueous solution of NH4Cl containing 5.0 g of salt. Get 10.000 g of the composition with the total initial concentration, PH 5.0 wt.%, content of charged parts of ammonium-PAK 25% of the content of charged units DMDAAC and conc is Tracia salt of 0.05 wt.%. The resulting mixture by sprinkling method is applied to the surface of the samples loamy soil in erosion trays, with a consumption rate of 0.6 l/m2. After drying, samples of their experience in the wind installation with the air flow rate of 16.7 m/s the efficiency of the fixing soil is 95±1%. Formed on the soil surface coating has good resistance.

Example 7.

The experience carried out analogously to example 4, however, an aqueous solution of cationic polyelectrolyte PITB mixed with an aqueous solution containing 0.3 g Kl and 0.7 g MgCl2. The effectiveness of the fixing soil obtained composition is 95±1%. Formed on the soil surface coating has good resistance.

Thus, the given examples show that the proposed method indeed allows to reduce the salt content of the composition with 1.5 wt.% (prototype) to 0.01-0.1 wt.% and to decrease the rate of flow rate of 1-2 l/m2(prototype) to 0.5-0.8 l/m2.

1. A method of obtaining a composition for fixing and soils by mixing aqueous solutions of anionic polyelectrolyte and a cationic polyelectrolyte and water-soluble salts, characterized in that the polyelectrolyte is mixed with the total initial concentration from 1 to 10 wt.% the ratio at which the content of charged units one prelect the Olite is from 5 to 50% of the content of charged parts of other polyelectrolyte and concentration of at least one salt, selected from the group consisting of alkali metal salt, ammonium salt, calcium salt, magnesium salt, from 0.01 to 0.1 wt.%.

2. The method according to claim 1, characterized in that the salt is mixed with an aqueous solution of one of the polyelectrolytes.

3. The method according to claim 1, characterized in that the aqueous salt solution is mixed with an aqueous solution of one of the polyelectrolytes.

4. The method according to claim 1, characterized in that the salt is mixed with aqueous solutions of each of the polyelectrolytes.

5. The method according to claim 1, characterized in that the aqueous salt solution is mixed with aqueous solutions of each of the polyelectrolytes.

6. The method according to claim 1, characterized in that the salt is mixed with aqueous solutions of anionic and cationic polyelectrolytes.

7. The method according to claim 1, characterized in that the aqueous salt solution is mixed with a mixture of aqueous solutions of anionic and cationic polyelectrolytes.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to soil and ground chemical propping compositions and can be used in agriculture against water and wind erosion, as well as in construction of roads and other earth structures. The composition contains a polyelectrolyte, a water-soluble salt and water. The polyelectrolyte is a charged polyelectrolyte which is a reaction product of aqueous solutions of a cationic polyelectrolyte and an anionic polyelectrolyte, selected from a group comprising a sodium salt of carboxymethyl cellulose, an alkali metal or ammonium salt of polyacrylic acid or polymethacrylic acid, taken in a ratio at which content of charged links of one polyelectrolyte is equal to 5-50% of the content of charged links of the other polyelectrolyte, and the salt is an alkali metal or ammonium salt, or a mixture of such a salt with a calcium or magnesium salt, with the following ratio of components, wt %: reaction product 0.91-9.91; water-soluble salt of aqueous solutions of the cationic and anionic polyelectrolytes 0.10-0.62; water - the balance.

EFFECT: low content of salt in the composition and lower consumption rate of the composition.

9 ex

FIELD: agriculture.

SUBSTANCE: invention relates to the field of recultivation of damaged soil in conditions of the Far North and may be used when restoring the soil and vegetation layer disturbed by industrial and economic human activities. The method of recultivation of damaged soil is described, including introduction into the ground of bentonite clay, seeds of perennial grasses, fertilisers, humic compounds and binder, and the bentonite clay is inserted as part of the waste mud, followed by stirring the top layer of soil. Then the fertiliser, humic compounds and seeds of perennial grasses are inserted, and then a binder is inserted, which is used as a solution of xanthan gum.

EFFECT: invention provides a more efficient process of recultivation, expansion of the scope of application on the surface of soils with different steepness.

2 ex

FIELD: agriculture.

SUBSTANCE: sapropel and natural loosener are ploughed into soil at the depth of 10-15 cm. Natural loosener is represented by siftings of open pits of construction materials, at the following weight ratio of components, %: sapropel 8-12%; siftings of pits of construction materials 13-32%; upper layer of clayey soil - balance.

EFFECT: increased bioproductivity of soils and protection of recultivated soils against wind erosion.

1 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to agriculture and may be used to reduce soil acidity, improve its structure and fertility. Method implies soil application of deoxidiser, which is a mixture of organic and mineral components with a deoxidising agent. Peat of 30-70% decay degree and pH 3.5-4.5 is used as organic component, borogypsum is used as mineral component and 53% alkaline solution (potassium hydroxide) is used as deoxidising agent. Ratio of components (kg per 1 tonn of resulting deoxidiser) is as follows: peat of 30-70% decay degree and pH 3.5-4.5 1200-1230, 53% potassium hydroxide solution 48-49, borogypsum 70-74. Deoxidising agent is applied in amount of 2-3 t per 1 ha.

EFFECT: reduced soil acidity, improved structure and fertility.

4 tbl

FIELD: chemistry.

SUBSTANCE: binding composition for processing material of solid particles with formation of solid aggregated matrix is prepared including the following stages: blending of polar solvent and additional quantity of urea; addition of emulsified bitumen; addition of ureaformaldehyde precondensate; addition of other binding promotors in order to enhance bonding between the binding composition and solid particles; addition of sugar into weak organic acid; addition of weak organic acid mixed with sugar with formation of the binding composition; blending of binding composition with solid particles, which harden during over 30 minutes while mixing with above mentioned material of solid particles, besides weak organic acid is being chosen to ensure pH value of binding composition from 2.0 to 5.3.

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51 cl, 15 dwg, 3 tbl, 11 ex

FIELD: agriculture, in particular improvement of soil physical, biological and agronomic characteristics.

SUBSTANCE: claimed method includes introducing of carbonate-containing material into soil, wherein as said material bergmeal containing (mass %): calcite 13-19; zeolite 18-25; glauconite; and balance: clay and silicate material is used. Bergmeal is introduced into soil in amount of 1.5-5 t/hectare.

EFFECT: enhanced assortment of ameliorants; improved soil agronomic characteristics and productivity.

9 tbl

FIELD: production of filled gel-like composition with viscoelastic properties.

SUBSTANCE: claimed composition contains (vol.pts): 0.5-2.0 mass % sodium tetraborate aqueous solution 1-2; 1.0-8.0 mass % polyvinyl alcohol aqueous solution 1-5; 1.0-8.0 mass % carboxymethyl cellulose aqueous solution 1-5 or 1.0-8.0 mass % polyacrylamide aqueous solution 1-2; and filler 1-3. Composition has dynamic viscosity of 642-2467.87 mPa.s; elasticity modulus of 61.12-81.12 N/m2, and adhesion of 53.76-86.79 N/m2. As filler sand with particle size of 0.23-0.5 mm; lavsan or propylene fiber of 70-100 mum in diameter and filament length of 3-6 cm, or Teflon granule at most 1 mm in diameter. Composition of present invention is useful in production of petroleum industry, oil line purification, as anticorrosion, biocide and wear resistant coatings.

EFFECT: new viscoelastic composition of improved quality.

The invention relates to the protection and restoration of the natural environment in the oil and gas companies and can be used for the disposal of waste drilling fluids, detoxify, as well as in agriculture for reclamation of disturbed soil and land

The invention relates to agriculture and can be used to obtain funds for detoxification of land and soil reclamation for agricultural purposes, and also for the development of methods of their use

The invention relates to the field of land reclamation, and in particular to compositions for remediation

FIELD: production of filled gel-like composition with viscoelastic properties.

SUBSTANCE: claimed composition contains (vol.pts): 0.5-2.0 mass % sodium tetraborate aqueous solution 1-2; 1.0-8.0 mass % polyvinyl alcohol aqueous solution 1-5; 1.0-8.0 mass % carboxymethyl cellulose aqueous solution 1-5 or 1.0-8.0 mass % polyacrylamide aqueous solution 1-2; and filler 1-3. Composition has dynamic viscosity of 642-2467.87 mPa.s; elasticity modulus of 61.12-81.12 N/m2, and adhesion of 53.76-86.79 N/m2. As filler sand with particle size of 0.23-0.5 mm; lavsan or propylene fiber of 70-100 mum in diameter and filament length of 3-6 cm, or Teflon granule at most 1 mm in diameter. Composition of present invention is useful in production of petroleum industry, oil line purification, as anticorrosion, biocide and wear resistant coatings.

EFFECT: new viscoelastic composition of improved quality.

FIELD: agriculture, in particular improvement of soil physical, biological and agronomic characteristics.

SUBSTANCE: claimed method includes introducing of carbonate-containing material into soil, wherein as said material bergmeal containing (mass %): calcite 13-19; zeolite 18-25; glauconite; and balance: clay and silicate material is used. Bergmeal is introduced into soil in amount of 1.5-5 t/hectare.

EFFECT: enhanced assortment of ameliorants; improved soil agronomic characteristics and productivity.

9 tbl

FIELD: chemistry.

SUBSTANCE: binding composition for processing material of solid particles with formation of solid aggregated matrix is prepared including the following stages: blending of polar solvent and additional quantity of urea; addition of emulsified bitumen; addition of ureaformaldehyde precondensate; addition of other binding promotors in order to enhance bonding between the binding composition and solid particles; addition of sugar into weak organic acid; addition of weak organic acid mixed with sugar with formation of the binding composition; blending of binding composition with solid particles, which harden during over 30 minutes while mixing with above mentioned material of solid particles, besides weak organic acid is being chosen to ensure pH value of binding composition from 2.0 to 5.3.

EFFECT: binding composition was prepared for processing of materials of solid particles.

51 cl, 15 dwg, 3 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: invention relates to agriculture and may be used to reduce soil acidity, improve its structure and fertility. Method implies soil application of deoxidiser, which is a mixture of organic and mineral components with a deoxidising agent. Peat of 30-70% decay degree and pH 3.5-4.5 is used as organic component, borogypsum is used as mineral component and 53% alkaline solution (potassium hydroxide) is used as deoxidising agent. Ratio of components (kg per 1 tonn of resulting deoxidiser) is as follows: peat of 30-70% decay degree and pH 3.5-4.5 1200-1230, 53% potassium hydroxide solution 48-49, borogypsum 70-74. Deoxidising agent is applied in amount of 2-3 t per 1 ha.

EFFECT: reduced soil acidity, improved structure and fertility.

4 tbl

FIELD: agriculture.

SUBSTANCE: sapropel and natural loosener are ploughed into soil at the depth of 10-15 cm. Natural loosener is represented by siftings of open pits of construction materials, at the following weight ratio of components, %: sapropel 8-12%; siftings of pits of construction materials 13-32%; upper layer of clayey soil - balance.

EFFECT: increased bioproductivity of soils and protection of recultivated soils against wind erosion.

1 cl, 2 tbl

FIELD: agriculture.

SUBSTANCE: invention relates to the field of recultivation of damaged soil in conditions of the Far North and may be used when restoring the soil and vegetation layer disturbed by industrial and economic human activities. The method of recultivation of damaged soil is described, including introduction into the ground of bentonite clay, seeds of perennial grasses, fertilisers, humic compounds and binder, and the bentonite clay is inserted as part of the waste mud, followed by stirring the top layer of soil. Then the fertiliser, humic compounds and seeds of perennial grasses are inserted, and then a binder is inserted, which is used as a solution of xanthan gum.

EFFECT: invention provides a more efficient process of recultivation, expansion of the scope of application on the surface of soils with different steepness.

2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to soil and ground chemical propping compositions and can be used in agriculture against water and wind erosion, as well as in construction of roads and other earth structures. The composition contains a polyelectrolyte, a water-soluble salt and water. The polyelectrolyte is a charged polyelectrolyte which is a reaction product of aqueous solutions of a cationic polyelectrolyte and an anionic polyelectrolyte, selected from a group comprising a sodium salt of carboxymethyl cellulose, an alkali metal or ammonium salt of polyacrylic acid or polymethacrylic acid, taken in a ratio at which content of charged links of one polyelectrolyte is equal to 5-50% of the content of charged links of the other polyelectrolyte, and the salt is an alkali metal or ammonium salt, or a mixture of such a salt with a calcium or magnesium salt, with the following ratio of components, wt %: reaction product 0.91-9.91; water-soluble salt of aqueous solutions of the cationic and anionic polyelectrolytes 0.10-0.62; water - the balance.

EFFECT: low content of salt in the composition and lower consumption rate of the composition.

9 ex

FIELD: chemistry.

SUBSTANCE: invention relates to soil and ground chemical propping methods and can be used in agriculture against water and wind erosion, as well as in construction of roads and other earth structures. The method involves mixing aqueous solutions of an anionic polyelectrolyte and a cationic polyelectrolyte and a water-soluble salt. The polyelectrolytes are mixed with their total initial concentration ranging from 1 to 10 wt % in a ratio at which content of charged links of one polyelectrolyte is equal to 5-50% of the content of charged links of the other polyelectrolyte and concentration of at least one salt, selected from a group comprising an alkali metal salt, an ammonium salt, a calcium salt and a magnesium salt, ranges from 0.01 to 0.1 wt %.

EFFECT: low content of salt in the composition and lower consumption rate of the composition.

7 cl, 7 ex

FIELD: chemistry.

SUBSTANCE: invention relates to soil and ground chemical propping compositions and can be used in agriculture against water and wind erosion, as well as in construction of roads and other earth structures. The disclosed aqueous soil and ground propping composition contains 0.90-4.62 wt % of a charged polyelectrolyte complex and 0.08-0.87 wt % of a salt of an alkali metal or ammonia. The charged polyelectrolyte complex in said composition is a product of reacting water-containing solutions of a cationic polyelectrolyte, which contains chloride and bromide counter-ions, and an anionic polyelectrolyte from a group which includes a sodium salt of carboxymethyl cellulose, an alkali metal or ammonium salt of a polyacrylic acid or polymethacrylic acid, taken in a ratio where content of charged links of one polyelectrolyte ranges from 51% to 60% of the content of charged links of the other polyelectrolyte.

EFFECT: compared to the closest counterpart, the disclosed composition provides efficient soil and ground propping from wind erosion while reducing content of salt in the composition from 1,5-3,7 wt % to 0,08-0,87 wt % and consumption of the composition from 1-2 l/m2 to 0,3-0,45 l/m2.

9 ex

FIELD: chemistry.

SUBSTANCE: three types of clay of different chemical composition is used with addition of molasses and Linex biopreparation in the following ratios, wt %: Dialbeculit clay -38-40; Irlit clay 1 - 28-32; Irlit clay 7 - 16-20; molasses - 8-12; Linex biopreparation -2-4. Adding such a composition to the soil reduces the amount of oil pollutants by 72%.

EFFECT: low toxicity of soil and expenses on amelioration.

1 tbl, 1 ex

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