Composite ameliorative material

FIELD: chemistry.

SUBSTANCE: composite material contains drilling wastes, portland cement in amount of 5-10% of the volume of the drilling wastes, technical carbon 0.5-1% of the volume of drilling wastes, quick lime 3-5% of the volume of drilling wastes, peat 20-40% of the volume of drilling wastes, sand 10-30% of the volume of the drilling wastes, phosphorus-containing mineral fertiliser 20-30 kg per ton of the composite material. The phosphorus-containing mineral fertiliser can be diammonium phosphate, ammonium nitrate phosphate fertiliser, ammophos with potassium sulphate or potassium chloride in ratio of 70:30 wt %, diammophos with potassium sulphate or potassium chloride in ratio of 70:30 wt %. The composite material further contains hydrocarbon-based spent or unused drilling fluid with hydrocarbon content of 3-5% of the volume of the drilling wastes.

EFFECT: use of the present composite material provides effective recultivation of disturbed soils while recycling hazardous drilling wastes and improves the environment.

8 cl, 3 ex

 

The invention relates to the oil and gas industry, in particular to the field of environmental protection in the development of oil and gas fields, and is intended for biological reclamation of saline and contaminated land.

Known Composite material made of a composition including drilling waste, sand, cement, lime, peat, phosphate fertilizer (RF Patent No. 2408626, C08L 61/00, SW 28/04,16/08, 18/04, AS 3/04, publ. 10.01.2011 year).

The disadvantage of this Composite material is the fact that it is still possible migration of hydrocarbons into the environment.

The closest is the composition for remediation of pits and disturbed lands, which includes the drilling sludge, peat, sand, quicklime and additive (Patent RF №2293103, SC 17/00, AV 79/02, publ. 10.02.2007,, prototype)

The disadvantage of this composition for remediation of pits and disturbed lands is that waste containing oil and oil products, use, including a sorbent and two bookreport, and making quicklime having a high hygroscopic property, when the damping will drastically reduce the titer (number) living microbial cells, which are the basis of drugs "SOILEX" and "Degradable", thereby virtually neutralizing ability of a given com is osili to dispose of the hydrocarbons. Moreover, bacterial preparations designed, primarily, to the positive temperature and high humidity of the substrate. The use of sorbent "Unipolar", lime, peat and sand will significantly reduce the percentage of moisture in the finished mixture, which again will cause a sharp decrease in the efficiency of hydrocarbon-oxidizing bakpreparatov.

The proposed Composite drainage material eliminates the above disadvantages, to increase the effectiveness of revegetation associated with the safe recycling of hazardous waste drilling, thus provides for processing of drilling wastes, including those containing oil, oil products, and artificial soils through which to carry out the remediation, for example, dry digging pits and disturbed lands, with the restoration of topography and soil fertility, filling pits and restoration of topsoil, also contributes to the disposal of drilling wastes, and industrial wastes, and improving the environmental situation of the areas of oil and gas production, to reduce the use of silting and dry digging sand, thereby reducing the negative anthropogenic impact on the landscape during the development of hydrocarbon deposits, for this Composite drainage material includes drilling waste is, Portland cement in an amount of 5 to 10% of the volume of drilling waste, technical carbon in an amount of from 0.5 to 1% of the volume of drilling waste, quicklime in an amount of from 3 to 5% of the volume of drilling waste, peat in the amount of from 20 to 40% of the volume of drilling waste, sand in quantities of from 10 to 30% of the volume of drilling waste, phosphate fertilizer in an amount of from 20 to 30 kg per 1 ton of produced composite reclamation material. Phosphate fertilizer represents, for example, double demofest, NPK, map with potassium sulfate, taken in the ratio of 70 wt.%:30 wt.%, the monoammonium phosphate potassium chloride, taken in the ratio of 70 wt.%:30 wt.%, the diammofosa with potassium sulfate, taken in the ratio of 70 wt.%:30 wt.%, the diammofosa potassium chloride, taken in the ratio of 70 wt.%:30 wt.%, while further comprises drilling mud waste or unused hydrocarbon-based content of hydrocarbons or liquid hydrocarbon based in an amount of from 3 to 5% of the volume of drilling waste.

Drilling wastes include drilling slurries, drilling waste water, etc.

Drilling sludge mostly contain oil and oil products from 3 to 7%, a solid phase 40-65% and water.

Drilling waste with a particle size of up to 500 microns and a density of from 1.3 to 1.6 t/m3.

Use brown is s oil-based solutions used or unused with the content of hydrocarbons in an amount of from 3 to 5%.

Portland cement, such as Portland cement M400, is issued by the industry according to GOST 4.204-79, which can be used in the temperature range from -30°C to+40°C and leads to thickening of the mixture, the binding of components of the drilling waste.

Technical carbon (soot) is used as a sorbent and is an industrial waste, which in this technical solution is disposed of, in addition, soot has absorptive properties similar sorption properties of activated charcoal.

Lime (unslaked) according to GOST 4.204-79 is issued by the industry and is a powdery product for fine grinding of lump lime. Lime (unslaked) promotes the formation of chelate compounds, which contribute to the formation of chelate compounds of organic substances (oil organics and fulvic - and humidifie acid contained in the peat) with metals being and growth factors not only for higher plants, but also for natural ogledalizacija microflora of peat (in the peatlands of West Siberia contains up to 10 million living cells uglevodorodokislyayuschih of microorganisms in 1 g of peat, which is comparable to the titer insertion of bacterial preparations).

When you make in a given amount of lime is increased alkalinity of the mixture, which contributes recyclen the Yu peat component, thereby increasing the efficiency of biological reclamation.

Peat is acidic characteristic of pH according to, for example, TO-001-02069355-2004, and drilling waste are alkaline environment. Thus, the peat will neutralize the alkaline environment of drilling waste.

In addition, peat contains hydrocarbon-oxidizing microorganisms, increase the efficiency of the biological utilization of petroleum hydrocarbons, which contribute to the degradation of petroleum hydrocarbons and binding of heavy metals in an inactive connection, for example hilate.

Sand is used as a mineral filler mixture with a particle size of from 2.7 mm to 3.1 mm

The use of sand allows to increase the friability of the mixture, to avoid excessive curing of the mixture into a solid monolith and to give a mixture granulirovannye-pasty condition.

Phosphate fertilizer provides a balance of nutrients in the composite drainage material and represents, for example, NPK, map with potassium sulfate, taken in the ratio of 70 wt.%:30 wt.%, the monoammonium phosphate potassium chloride, taken in the ratio of 70 wt.%:30 wt.%, the diammofosa with potassium sulfate, taken in the ratio of 70 wt.%:30 wt.%, the diammofosa potassium chloride, taken in the ratio of 70 wt.%:30 wt.%.

NPK produced industry is Yu, for example, according to GOST 19691-84.

Double demofest is issued by the industry, for example, according to GOST.

The diammofosa fertilizer produced by the industry, for example, on THE 113-08-468-90 and THE 113-08-556-93. The map is issued by the industry, for example, according to GOST 18918-85.

Potassium chloride is produced by the industry, for example, according to GOST 4568-95, potassium sulfate - K2SO4is issued by the industry, for example, according to GOST 4145-74.

Using the proposed composite drainage material peat and carbon technical in predetermined quantities allows you to revegetate, for example, contaminated land, quarries and excavation, and use of composite drainage material as a soil for cultivating the plant and in this case, with peat and carbon technical absorb movable contamination in drilling waste, such as oil, heavy metals, salts, preventing their migration into the soil, and improves the viscosity and quality of the material.

Composite drainage material is prepared as follows.

Drilling waste take in the estimated number and poured into the container, then fall asleep in the capacity of technical carbon in an amount of from 0.5 to 1% of the volume of drilling waste, quicklime in an amount of from 3 to 5% of the volume of drilling waste and all mix mixer for 5-15 minutes.

The liming is carried water in drilling waste in sufficient quantity and to make peat, which allows you to save living of indigenous hydrocarbon-oxidizing microflora peat.

Then fall asleep peat in the amount of from 20 to 40% of the volume of drilling waste, the Portland cement in an amount of 5 to 10% and the sand in the range from 10 to 30% of the volume of drilling waste, mix all ingredients mixing device within 5-15 minutes.

In the resulting mixture is poured phosphate fertilizer in an amount of from 20 to 30 kg per 1 ton of the mixture, for example, NPK, map with potassium sulfate, taken in the ratio of 70 wt.%:30 wt.%, the monoammonium phosphate potassium chloride, taken in the ratio of 70 wt.%:30 wt.%, the diammofosa with potassium sulfate, taken in the ratio of 70 wt.%:30 wt.%, the diammofosa with potassium chloride, taken in the ratio of 70 wt.%:30 wt.%, and all this stirred mixing device within 5-15 minutes.

In the resulting mixture was additionally injected drilling mud waste or unused hydrocarbon-based content of hydrocarbons in an amount of from 3 to 5% of the volume of drilling waste.

The obtained Composite drainage material is transported, for example, on a vehicle developed in the sand pit, and place, for example, using automixer prepared in the s duchatellier plow the furrow width of 0.3 m and a depth of 0.3 m

Same day make landing zoned saplings or seedlings of tree species of woody plants.

The processes of mixing carried out by known means, for example, by using different mixing systems, for example with the help of an excavator, the movement of the bucket in the longitudinal or transverse directions.

Stirring is carried out to obtain a homogeneous dense mass. When this is thoroughly milled clots and pieces of drilling waste.

The duration of the mixing process one batch is 5-15 minutes.

Laying Composite reclamation material objects by prominent construction machinery, earth-moving machines, excavators, dump trucks, cutters, loaders, bulldozers, graders, rollers.

As shown by the experiments in progress at the Yety-Purovskoye field of oil, the obtained Composite drainage material allowed to carry out the remediation of oil polluted soils.

The proposed Composite drainage material is illustrated by the following examples.

Example 1.

In capacity fall asleep drilling waste in the amount of 600 kg, containing oil and petroleum products 7%,, solid phase 65% water, carbon technical in the amount of 6 kg (1% of the volume of drilling waste, quicklime in the amount of 30 kg (5% of the volume of drilling waste), and all mix mixer for 10 minutes.

Then in the capacity of add peat in the amount of 240 kg (40% of the volume of drilling waste), Portland cement M400 in the amount of 60 kg (10% of the volume of drilling waste and sand in the amount of 180 kg (30% of the volume of drilling waste), mix all ingredients mixing device within 15 minutes.

In the mixture add the NPK in the amount of 30 kg per 1 ton of the mixture, all of this stirred mixing device for 10 minutes, and additionally injected drilling mud unused hydrocarbon-based in an amount of from 3 to 5%. Mixing device for 15 minutes to mix thoroughly.

The obtained Composite drainage material disposed on automixer in produced sand pit and place using automixer in advance duchatellier plow the furrow width of 0.3 m and a depth of 0.3 m In the same day manually produce landing zoned seedlings of larch on contaminated soils, past reclamation.

After a month; the survival of seedlings was 83%.

Example 2.

In capacity fall asleep drilling waste in the amount of 600 kg, containing oil of 5%, the solid phase is 50% water, carbon technical in the amount of 3 kg (0.5% of the volume of drilling waste) and quicklime in the amount of 18 kg (3% of the volume of drilling waste) and stirred mixing device within 5 minutes.

After mixing in a container add peat in the amount of 120 kg (20% of the volume of drilling waste), sand in the amount of 60 kg (10% of the volume of drilling waste) and Portland cement M400 in the amount of 30 kg (5% of the volume of drilling waste), all stirred mixing device within 7 minutes.

In the resulting material type map with potassium sulfate, taken in the ratio of 70 wt.%:30 wt.%, in the amount of 20 kg per 1 ton of the mixture, all of this stirred mixing device within 10 minutes.

The obtained Composite drainage material disposed on automixer in produced sand pit and place using automixer in advance duchatellier plow the furrow width of 0.3 m and a depth of 0.3 m

On the same day manually produce landing zoned spruce seedlings on contaminated soils that have undergone remediation. A month later, survival of seedlings was 76%.

Example 3.

In capacity fall asleep drilling waste in the amount of 600 kg, containing oil and petroleum products 3%, the solid phase is 60% water, soot in the amount of 4.5 kg (0.75% of the volume of drilling waste), quicklime in the amount of 24 kg (4% of the volume of drilling waste) and stirred mixing device within 5 minutes.

After mixing in a container add peat in the amount of 45 kg (7.5 per cent of total drilling waste), sand in the amount of 120 kg of 20% of the volume of drilling waste) and Portland cement M400 90 kg (15%, the volume of drilling waste), all stirred mixing device within 7 minutes.

Then enter the diammofosa potassium chloride, taken in the ratio of 70 wt.%:30 wt.%, in the amount of 25 kg per 1 ton of the mixture, and all this stirred mixing device within 10 minutes.

The obtained Composite drainage material disposed on automixer in produced sand pit and place using automixer in advance duchatellier plow the furrow width of 0.3 m and a depth of 0.3 m In the same day manually produce landing zoned birch seedlings in the contaminated soils that have undergone remediation. A month later, survival of seedlings was 89%.

When using Composite reclamation material resulting from the disposal of drilling waste, there was no migration of contaminants out of him in the sand sales bottom and the slope of the quarry, and agronomic and phyto-reclamation measures allowed to revegetate disturbed areas to restore fertility and use of land for forestry purposes.

The use of Composite reclamation material has enabled us to effectively implement the reclamation of dry digging pits and disturbed lands, with the restoration of topography and soil fertility, and improve environmental about the situation areas of oil and gas production, reduce the use of silting and dry digging sand, thereby reducing the negative anthropogenic impact on the landscape during the development of hydrocarbon fields.

1. Composite drainage material, including drilling waste, technical carbon in an amount of from 0.5 to 1% of the volume of drilling waste, quicklime in an amount of from 3 to 5% of the volume of drilling waste, peat in the amount of from 20 to 40% of the volume of drilling waste, sand in quantities of from 10 to 30% of the volume of drilling waste, the Portland cement in an amount of 5 to 10% of the volume of drilling waste and phosphate fertilizer in an amount of from 20 to 30 kg per 1 ton of produced composite of reclamation material, while the liming carry out drilling waste.

2. Composite drainage material according to claim 1, characterized in that it further comprises drilling mud waste or unused hydrocarbon-based content of hydrocarbons in an amount of from 3 to 5% of the volume of drilling waste.

3. Composite drainage material according to claim 1, characterized in that the drilling waste is a drilling waste containing oil and oil products in the amount of 3 to 7%.

4. Composite drainage material according to claim 1, characterized in that the phosphorus fertilizer is the way the th NPK or double demofest.

5. Composite drainage material according to claim 1, characterized in that the phosphorus fertilizer is a map with potassium sulfate, taken in the ratio of 70 wt.%: 30 wt.%.

6. Composite drainage material according to claim 1, characterized in that the phosphorus fertilizer is a monoammonium phosphate potassium chloride, taken in the ratio of 70 wt.%: 30 wt.%.

7. Composite drainage material according to claim 1, characterized in that the phosphorus fertilizer is a diammofosa with potassium sulfate, taken in the ratio of 70 wt.%:30 wt.%.

8. Composite drainage material according to claim 1, characterized in that the phosphorus fertilizer is a diammofosa potassium chloride, taken in the ratio of 70 wt.%:30 wt.%.



 

Same patents:

FIELD: construction.

SUBSTANCE: method consists in treatment of the latter by a stabiliser containing latex polymer, which is applied mixed with water. Treatment of soil or foundation is carried out by introduction of the stabiliser by means of a cutter by the cutting method as the stabiliser is mixed with ground or foundation. The latex polymer is represented by latexes from the group that includes sterol-butadiene latex, (meth)acrylate latex, ethylene-vinyl acetate latex, ethylene/propylene latex, ethylene/propylene-dimer latex, butadiene-acrylonitrile latex, silicon latex, polybutadiene latex, latex from natural rubber or mixture of two or several of the specified latexes. The stabiliser additionally comprises a thickener based on cellulose, a defoaming agent selected from the group including silicons, glycol ethers, natural fats or oils and fatty alcohols, and also at least one chloride or at least one hydroxide of alkaline or earth metal, besides, the stabiliser has the following composition (wt %); 0.1 - 50 latex polymer, 0.05 - 5 thickener, up to 5 defoaming agent, 0.01 - 10 chloride or hydroxide of alkaline or earth metal, residue to 100 - water.

EFFECT: fixation and stabilisation of soils or foundations, making it possible without removal and recycling of oil soil and special costs to perform construction-earth works.

6 cl, 2 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

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: 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.

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

9 ex

FIELD: agriculture.

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2 ex

FIELD: agriculture.

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1 cl, 2 tbl

FIELD: chemistry.

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4 tbl

FIELD: chemistry.

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51 cl, 15 dwg, 3 tbl, 11 ex

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

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

9 tbl

FIELD: agriculture.

SUBSTANCE: ameliorative preparation is made in the form of extrudates with a diameter of 3-5 mm. According to one version, the preparation comprises the industrial waste - a low-calcium fly ash of hard coal of Ekibastuz origin and cement or gypsous alabaster. The preparation may additionally comprise fossil flour or black carbon, or their mixture at a weight ratio of fly ash and the additional component of 1:1. The ameliorative preparation according to another version comprises black carbon and cement or gypsous alabaster and may additionally comprise fossil flour at a weight ratio of black carbon and fossil flour of 1:1. The amount of cement or gypsous alabaster in the ameliorative preparation is 17-30% by weight of the mixture.

EFFECT: invention provides an increase in yield of green mass of barley on the black soil meadow alkali soils, increasing the length of the spike and grain yield.

6 cl, 7 dwg, 8 tbl

FIELD: construction.

SUBSTANCE: invention is related to the field of construction, in particular to methods for cementation of weak soils in preparation and reconstruction of buildings and structures foundations. In method of weak soils cementation, including preparation of water suspension of cement with finely dispersed mineral component and introduction of prepared suspension into soil, as finely dispersed mineral component they use carbonate sludge of chemical water treatment for boiler houses of heat power plants - HPP or heat power stations HPS, which is introduced in composition of solid phase of water suspension of cement prior to preparation of specified suspension in amount of 10-35 wt % of solid phase mass, identifying maximum value of its amount according to the following formula: where W/C - water cement ratio of cement water suspension without addition of carbonate sludge that makes 0.44-0.86.

EFFECT: improved physical-mechanical characteristics of cement-containing solution intended for introduction into strengthened soil, expansion of raw material base of cementation mortars making and reduction of material and labour expenses in process of soil strengthening.

1 ex, 6 tbl

FIELD: agriculture.

SUBSTANCE: ameliorative preparation is made in the form of extrudates with a diameter of 3-5 mm. According to one version, the preparation comprises the industrial waste - a low-calcium fly ash of hard coal of Ekibastuz origin and cement or gypsous alabaster. The preparation may additionally comprise fossil flour or black carbon, or their mixture at a weight ratio of fly ash and the additional component of 1:1. The ameliorative preparation according to another version comprises black carbon and cement or gypsous alabaster and may additionally comprise fossil flour at a weight ratio of black carbon and fossil flour of 1:1. The amount of cement or gypsous alabaster in the ameliorative preparation is 17-30% by weight of the mixture.

EFFECT: invention provides an increase in yield of green mass of barley on the black soil meadow alkali soils, increasing the length of the spike and grain yield.

6 cl, 7 dwg, 8 tbl

Improver // 2159266
The invention relates to agriculture and can be used to enhance the physical, biological and agronomic parameters of soil

Organic fertilizer // 2096393

FIELD: agriculture.

SUBSTANCE: ameliorative preparation is made in the form of extrudates with a diameter of 3-5 mm. According to one version, the preparation comprises the industrial waste - a low-calcium fly ash of hard coal of Ekibastuz origin and cement or gypsous alabaster. The preparation may additionally comprise fossil flour or black carbon, or their mixture at a weight ratio of fly ash and the additional component of 1:1. The ameliorative preparation according to another version comprises black carbon and cement or gypsous alabaster and may additionally comprise fossil flour at a weight ratio of black carbon and fossil flour of 1:1. The amount of cement or gypsous alabaster in the ameliorative preparation is 17-30% by weight of the mixture.

EFFECT: invention provides an increase in yield of green mass of barley on the black soil meadow alkali soils, increasing the length of the spike and grain yield.

6 cl, 7 dwg, 8 tbl

FIELD: chemistry.

SUBSTANCE: composite material contains drilling wastes, portland cement in amount of 5-10% of the volume of the drilling wastes, technical carbon 0.5-1% of the volume of drilling wastes, quick lime 3-5% of the volume of drilling wastes, peat 20-40% of the volume of drilling wastes, sand 10-30% of the volume of the drilling wastes, phosphorus-containing mineral fertiliser 20-30 kg per ton of the composite material. The phosphorus-containing mineral fertiliser can be diammonium phosphate, ammonium nitrate phosphate fertiliser, ammophos with potassium sulphate or potassium chloride in ratio of 70:30 wt %, diammophos with potassium sulphate or potassium chloride in ratio of 70:30 wt %. The composite material further contains hydrocarbon-based spent or unused drilling fluid with hydrocarbon content of 3-5% of the volume of the drilling wastes.

EFFECT: use of the present composite material provides effective recultivation of disturbed soils while recycling hazardous drilling wastes and improves the environment.

8 cl, 3 ex

FIELD: oil industry.

SUBSTANCE: invention relates to methods for rehabilitation of lands contaminated by oil products. Waste drilling mud is excavated from earth storages onto a flat surface and dried at the sun. Mixture of phosphogypsum and glauconite is introduced for binding heavy metal salts in hardly soluble forms and thickening the mud and sorption of heavy metal salts. Mass is dried in natural conditions till the moisture content of 8-14 % and reduction of its volume 6-8 times. Mixture is stirred by a bulldozer equipped with a milling-rotary working element, with subsequent placement and sealing in storages, the bottom of which is covered with the glauconite layer of 20-30 cm thick. Then it is covered with a 20-30 cm thick glauconite layer and with a mineral soil layer with a thickness of not less than 0.5-1.0 m. Over it a fertile layer is put with the thickness of 20-40 cm enriched with glauconite. Storages are made on any types of soil with deposition of ground waters of not less than 8-10 m and at the underlayer thickness from 15-20 m and more.

EFFECT: provided is reduced content of heavy metal salts and oil products in waste drilling mud and oil-contaminated soil with simultaneous simplification of decontaminating technology.

1 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: slag of ferrovanadium production by silicoaluminothermic method is used as a neutralizing material for reclamation of acidified soils of the plant containers.

EFFECT: expanding the arsenal of neutralizing materials used for reclamation of acidified soils.

2 tbl, 1 ex

FIELD: construction.

SUBSTANCE: invention is related to the field of construction, in particular to methods for cementation of weak soils in preparation and reconstruction of buildings and structures foundations. In method of weak soils cementation, including preparation of water suspension of cement with finely dispersed mineral component and introduction of prepared suspension into soil, as finely dispersed mineral component they use carbonate sludge of chemical water treatment for boiler houses of heat power plants - HPP or heat power stations HPS, which is introduced in composition of solid phase of water suspension of cement prior to preparation of specified suspension in amount of 10-35 wt % of solid phase mass, identifying maximum value of its amount according to the following formula: where W/C - water cement ratio of cement water suspension without addition of carbonate sludge that makes 0.44-0.86.

EFFECT: improved physical-mechanical characteristics of cement-containing solution intended for introduction into strengthened soil, expansion of raw material base of cementation mortars making and reduction of material and labour expenses in process of soil strengthening.

1 ex, 6 tbl

FIELD: agriculture.

SUBSTANCE: ameliorative preparation is made in the form of extrudates with a diameter of 3-5 mm. According to one version, the preparation comprises the industrial waste - a low-calcium fly ash of hard coal of Ekibastuz origin and cement or gypsous alabaster. The preparation may additionally comprise fossil flour or black carbon, or their mixture at a weight ratio of fly ash and the additional component of 1:1. The ameliorative preparation according to another version comprises black carbon and cement or gypsous alabaster and may additionally comprise fossil flour at a weight ratio of black carbon and fossil flour of 1:1. The amount of cement or gypsous alabaster in the ameliorative preparation is 17-30% by weight of the mixture.

EFFECT: invention provides an increase in yield of green mass of barley on the black soil meadow alkali soils, increasing the length of the spike and grain yield.

6 cl, 7 dwg, 8 tbl

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