Soil and ground propping composition

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

 

The invention relates to the field of compositions for the 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 earth structures.

Known composition to consolidate the soil and ground water based, polyethylenimine (PAYS), polyacrylic acid (PAC) and ammonia in the following ratio of components (parts by weight):

PAK1
PAYS1.5 to 2.5
ammonia1,6-1,8

(A.S. USSR №642411, CL IS 7/36, 1979).

Known composition for fixing and soils on the basis of hydrolyzed polyacrylonitrile (GIPAN), polydimethyldiallylammonium chloride (DMDAAC) and water in the following ratio of components (parts by weight):

The GIPAN8-12
DMDAAC8-12
waterrest

(A.S. USSR №1507771, CL 08L 33/00, 1989).

Closest to the claimed is known previously proposed structure for anchoring the soil and the soil is in based on anionic polyelectrolyte (PE) and cationic PE, water-soluble salt (a mixture of salts of an alkali metal or ammonium salt of calcium or magnesium) and water in the following ratio, wt.%:

anionic PE0,5-3,0
cationic PE0,5-3,0
salt of an alkali metal or ammonium1,2-2,7
salt of the divalent metal0.3 to 1.0
waterrest

(patent of Russia №2142492, CL SC 17/00, 1999) prototype.

The disadvantages of the known composition are sufficiently high content of salts and relatively high consumption rate of soil (1-2 l/m2), which inevitably leads to the salinization of the soil.

An object of the invention is to provide a composition for fixing soils and soils low in salt and low consumption rate.

Preliminary experiments were carried out with different PH and salts, in which it was found that the specified technical result is achieved only when a known composition for fixing and soils on the basis of PH, soluble salts and water as PE esoteric charged PE, which is the product of interaction of aqueous solutions of cationic PE and anionic PE selected from the group comprising sodium carboxymethyl cellulose (sodium CMC), salt of an alkali metal or ammonium PAK or polymethacrylic acid (PMAC), taken in the ratio in 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 the quality of the salt it contains a salt of an alkali metal or ammonium, or a mixture of such salt with a salt of calcium or magnesium in the following ratio, wt.%:

product interaction0,91-to 9.91
aqueous solutions
cationic PE and anionic PE
water-soluble salt0,10-0,62
waterrest

The proposed technical solution, as anionic PE you can use any water-soluble anionic PE selected from the group comprising sodium CMC, sodium salt PAK (sodium-PAK), potassium salt PAK (potassium-PAK), ammonium salt PAK (ammonium-PAK), sodium salt PMAC (soda is th-PMAC), potassium salt of PMAC (potassium-PMAC), ammonium salt PMAC (ammonium-PMAC). As cationic PE you can use any water-soluble cationic PE, for example DMDAAC, polyhexamethyleneguanidine chloride (PMGH), alkilirovanny poly-N-vinylpyridin 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 structure can be obtained by mixing aqueous solutions of anionic PE and a cationic, PH, and soluble salts, while 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 the initial concentration of at least one salt selected from the group comprising the alkali metal salt, ammonium salt, calcium salt, magnesium salt, from 0.01 to 0.1 wt.%.

Upon receipt of the proposed structure, 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. When this water-soluble salt in the composition can be entered in the solid state or in the de its aqueous solution. Salt can be mixed with an aqueous solution of one of 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.

In this invention, one can use the product of the interaction of aqueous solutions of anionic PE and cationic PE with experimentally found optimal content of charged parts of one PE in relation to the content of charged units other PE from 5 to 50%. Thus the sign of the charge received PE in principle irrelevant, that is, in PE can prevail as anionic units and cationic units. 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 polio is carolita 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. Thus, the 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, you must take DMDAAC in the amount of 500×0,301=150,5 g and sodium-PAK in the number 349,5, during the formation of the product of the interaction of aqueous solutions of cationic PE and anionic PE in the system resulting from the interaction of released counterions chlorine and sodium can be formed salt is NaCl. The amount of this salt will be equal to the mass of the PE, the links of which are taken at disadvantage (150,5 g)multiplied by the molecular weight of NaCl (58,5 Dalton) and divided by the molecular weight of the charged component of this PE, i.e. 162 Dalton. Thus, in the course of obtaining the composition is formed (150,5 x 58,5)/162=54,3 g NaCl or 0, 54 wt.%. The weight of the product of the interaction of aqueous solutions of cationic PE and anionic PE is equal to the total initial mass PE minus the number of the formed salt, i.e. 500-54,3=445, 7 g or 4,46 wt.%. Elevationally composition to obtain when the concentration of the original input salts NaCl, for example, 0.05 wt.%, the total salt content in the composition is equal to 0,54+0,05=0,59 wt.%. Thus, you will get 10.000 g of the composition containing the product of the interaction of aqueous solutions of cationic PE and anionic PE 4,46 wt.%, the content of water-soluble salts NaCl 0,59 wt.% and water content 94,95 wt.%. To obtain compounds of the other recipes you need to make the appropriate calculation.

In the claims the distinctive characteristic is the ratio of charged units taken Peh 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 carried out analogously 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.

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 product more than 50% to maintain the homogeneity of the composition is necessary to introduce a Bo is the more soluble salts, which inevitably leads to undesirable soil salinization and soil.

In the proposed composition as a salt can be used water-soluble salt of an alkali metal or ammonium, or a mixture of such salts with water-soluble salt of calcium or magnesium, and salt should be taken in experimentally found the amount of 0.1-to 0.62 wt.% from the proposed structure. When the salt content of less than indicated in the formula, the composition is inhomogeneous, which leads to the formation of inhomogeneous properties of the coating on the treated surface of the soil. More than one specified in the formula, the salt content of the composition leads to undesirable soil salinization, poor fertility, and the phasing out intensive subsistence turnover.

The proposed technical solution, it has been experimentally found optimal content of the product of the interaction of aqueous solutions of anionic PE and cationic PE in composition from 0.91 to to 9.91 wt.%. With less than stated, the content of the product is low efficiency of fixation, that is, the composition does not form a crust on the soil surface. With a larger content of the product increases the viscosity of the composition and increases the rate of its consumption for treated soil layer and achieve the desired efficiency of the fastening.

The presence in the composition it is a product of the interaction of wadood rasih solutions of anionic PE and cationic PE, and not just a mechanical mixture dissolved the above-mentioned polymers is confirmed by the results of the following experiments. In accordance with the invention to prepare the product of the interaction of aqueous anionic PE and cationic PE in aqueous NaCl solution. Put the sample obtained in the cell ultracentrifuge and pick up the speed of rotation of the rotor ultracentrifuge thus, in order to provide quantitative (full) precipitation of the product. Make sure that the supernatant (supernatant) contains no free anionic PE, nor free of cationic PE. Then spend two test experiment: in the first centrifuged solution anionic PE in aqueous salt solution, the second aqueous solution of cationic PE in aqueous salt solution. The concentration of PE in the control experiments take is equal to the concentration of these components in the formation of the product. Centrifugation of the solutions separately taken PE is performed at the same speed of rotation of the rotor, in which there was complete precipitation of the product. When convinced that under these conditions neither the individual anionic PE or individual cationic PE not precipitate from solution. The totality of the results obtained clearly indicates that the mixing of aqueous solutions of anionic PE and cational the PE when stated in the claims ratio of oppositely charged parts of PE is accompanied by formation of a new product, which quantitatively includes both PE.

This product is interpolyelectrolyte complex, however, accurately describe its structure is not possible.

It should be noted that in this invention, we declare the true composition for fixing soils, and not a list of individual components that are required to obtain such a composition.

The proposed 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, flow rate and consequently the depth of 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 structure are illustrated in the following examples.

Example 1.

Mix 5 g of NaCl with 3.995 g of an aqueous solution of anionic PE 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 cationic PE poly-N-ethyl-4-vinylpyridinium chloride (PAP)containing at 52.2 g of polymer. This abshaihova concentration PE is 1 wt.%, and PE is taken in the ratio in which the content of charged groups Na-CMC is 50% of the content of charged units PITCH. Get 10.000 g of the composition in which the content of a charged PE, which is the product of interaction of aqueous solutions of cationic PE and anionic PE is of 0.91 wt.%. The content of water-soluble salt NaCl is equal to 0.14 wt.% and the water content is 98,95 wt.%. The resulting mixture by sprinkling method is applied to the surface of samples of sandy loam soil in erosion trays, with a consumption rate of 0.8 l/m2and 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 2.

Mix 100 g of an aqueous solution l2containing 1.0 g of salt, with 3,000 g of an aqueous solution of cationic polyelectrolyte DMDAAC containing 164 g of the polymer, and then the resulting solution is mixed with 6.900 g of an aqueous solution of anionic polyelectrolyte sodium-PAK containing 636,0 g of polymer. The total initial concentration, PH 8.0 wt.% and PE is taken in the ratio in which the content of charged parts of cationic PE is 15% of the content of charged parts of anionic PE. Get 10.000 g of the composition in which the content of a charged PE, awsume the Osia product of interaction of aqueous solutions of anionic PE and cationic PE, is 7,41 wt.%, the content of water-soluble salt (a mixture of NaCl and l2) is equal to 0.6 wt.% and the water content is 91,99 wt.%. The resulting mixture by sprinkling method is applied to the surface of soil samples taken from the beach nepheline tailings and 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 900 g of an aqueous solution of anionic polyelectrolyte 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 aqueous solution of MgCl2containing 5.0 g of salt. The total initial concentration, PH is 5.0 wt.% and PE is taken in the ratio in which the content of charged parts of anionic PE is 25% of the content of charged parts of cationic PE. Get 10.000 g of the composition in which the content of a charged PE, which is the product of interaction of aqueous solutions of cationic PE and anionic PE is with 4.64 wt.%, the content of water-soluble salt (a mixture of NH4CL and l2is 0,41 wt.% and the content of the water is 94,95 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 4.

Mix 500 g of an aqueous solution Kl containing 1.0 g of salt, with 5,500 g of an aqueous solution of cationic PE poly-N-ethyl-4-vinylpyridinium bromide (PAPB)containing 544,2 g of polymer. Then mix 500 g of an aqueous solution Kl containing 1.0 g of salt, with 3.500 g of an aqueous solution of anionic polyelectrolyte potassium-PAK containing 55.8 g of polymer. The resulting solutions are mixed with each other. The total initial concentration, PH is 6.0 wt.% and PE is taken in the ratio in which the content of charged parts of anionic PE is 20% of the content of charged parts of cationic PE. Get 10.000 g of the composition in which the content of a charged PE, which is the product of interaction of aqueous solutions of cationic PE and anionic PE, is 5.4 wt.%, the content of water-soluble salt (a mixture of Kl and CVG) is equal to 0.62 wt.%, and the water content is 93,98 wt.%. The resulting mixture by sprinkling method is applied on the surface the samples loamy soil, located in the 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 soil surface coating has good resistance.

Example 5.

Mix 500 g of an aqueous solution of cationic polyelectrolyte DMDAAC containing 25,0 g of polymer, with 9.499 g of an aqueous solution of anionic polyelectrolyte sodium CMC containing 975 g of polymer. Thereafter, the resulting mixture was mixed with 1.0 g MgCl2. The total initial concentration of PE is 10 wt.% and PE is taken in the ratio in which the content of charged parts of cationic PE is 5% of the content of charged parts of anionic PE. Get 10.000 g of the composition in which the content of a charged PE, which is the product of interaction of aqueous solutions of anionic PE and cationic PE is to 9.91 wt.%, the content of water-soluble salt (a mixture of NaCl and MgCl2) 0.10 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%. Form is ease on the soil surface coating has good resistance.

Example 6.

Mix 0.5 g MgCl2with 4.999,5 g of an aqueous solution of cationic polyelectrolyte GMGH containing 241,2 g of polymer. Then mixed with 0.5 g of MgCl2with 4.999,5 g of an aqueous solution of anionic polyelectrolyte potassium-PMAC containing 58.5 g of polymer. The resulting solutions are mixed with each other. The total initial concentration, PH is 3.0 wt.% and PE is taken in the ratio in which the content of charged parts of anionic PE is 35% of the content of charged parts of cationic PE. Get 10.000 g of the composition in which the content of a charged PE, which is the product of interaction of aqueous solutions of anionic PE and cationic PE is to 2.65 wt.%, the content of water-soluble salt (a mixture of Kl and MgCl2) is equal to 0.36 wt.% and the water content is 96,99 wt.%. The resulting mixture by 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 7.

The experience carried out analogously to example 6, but instead of MgCl2enter CaCl2. The effectiveness of the fixing soil pillar is t 95±1%.

Example 8.

Mixing 1,000 g of an aqueous solution of cationic polyelectrolyte GMGH containing 76,0 g of polymer, with 8.990 g of an aqueous solution of anionic polyelectrolyte sodium PMAC containing 940 g of the polymer, and then the resulting mixture was added 10.0 g NaCl. The total initial concentration of PE is 10 wt.% and PE is taken in the ratio in which the content of charged parts of cationic PE is 5% of the content of charged parts of anionic PE. Get 10.000 g of the composition in which the content of a charged PE, which is the product of interaction of aqueous solutions of cationic PE and anionic PE, 9.75 wt.%, the content of water-soluble salt NaCl is equal to 0.35 wt.% and the water content is equal to 89.9 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 0.8 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 soil is 97±1%. Formed on the soil surface coating has good resistance.

Example 9.

Mix 4.000 g of an aqueous solution of cationic polyelectrolyte PITCH containing 79,4 g of polymer, with 5.998 g of an aqueous solution of anionic polyelectrolyte ammonium-PMAC containing 120,6 g of the polymer, and then received MES add 2.0 g NH 4CL. The total initial concentration, PH is 2.0 wt.% and PE is taken in the ratio in which the content of charged parts of cationic PE is 40% of the content of charged parts of anionic PE. Get 10.000 g of the composition in which the content of a charged PE, which is the product of interaction of aqueous solutions of cationic PE and anionic PE, 1.75 wt.%, the content of water-soluble salts of NH4Cl is equal to 0.27 wt.%, and the water content is 97,98 wt.%. The resulting mixture by sprinkling method is applied to the surface of the samples sod-podzol soils 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 10 m/S. the Effectiveness of consolidation of the soil is 95±1%. Formed on the soil surface coating has good resistance.

Example 10.

The experience carried out analogously to example 9, but instead of NH4CL in the mixture of aqueous solutions of polyelectrolytes add CaCl2. The effectiveness of the fixing soil obtained composition is 96±1%.

Thus, the given examples show that the proposed composition really gives the possibility to consolidate the soil and the soil from wind erosion and can significantly reduce the salt content of from 1.5 to 3.7 wt.% (FR what type) up to 0.10-of 0.62 wt.%, and to decrease the rate of flow rate of 1-2 l/m2(prototype) to 0.5-0.8 l/m2.

The composition for fixing and soils on the basis of polyelectrolyte, a water-soluble salt and water, characterized in that as it contains polyelectrolyte charged polyelectrolyte, which is the product of interaction of aqueous solutions of cationic polyelectrolyte and anionic polyelectrolyte selected from the group comprising sodium carboxymethyl cellulose, salt of an alkali metal or ammonium polyacrylic acid or polymethacrylic acid, taken in the ratio in which the content of charged parts of a single polyelectrolyte is from 5 to 50% of the content of charged parts of other polyelectrolyte, and the quality of the salt it contains a salt of an alkali metal or ammonium, or a mixture of such salts with calcium salt or magnesium in the following ratio, wt.%:

Product interaction
aqueous solutions
cationic polyelectrolyte and
anionic polyelectrolyte0,91-to 9.91
Odor starima Sol 0,10-0,62
Waterrest



 

Same patents:

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.

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

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

The invention relates to the construction and can be used for consolidating sand in the construction and repair of main oil and gas pipelines, roadsides of roads, slopes of channels, the pillars of power and communication lines, and for other similar purposes

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

Up!