Reclamation method of drilling sludge pit

FIELD: technological processes.

SUBSTANCE: invention relates to the reclamation of sludge pits, production of artificial earth mixtures based on drilling sludge and can be used in the mining and oil-producing industries. The method consists in the subsequent collection of liquid oil, then, bituminised oil from water surface of the pit, pumping-out of a water phase from the pit, creation of cutting backfills, collection of the bituminised oil from the surface of the drilling sludge, collection of the bituminised oil, oil sludge and oil-contaminated soil from the diking surface of the drilling sludge pit, mixing of the obtained drilling sludge with peat and sand in the following ratio, vol %: drilling sludge not more than 75.0, peat not less than 18.0, sand not less than 7.0, at the total content of the components, which is equal to 100 vol % in the volumes providing the obtainment of soil performing a function of soil-forming rock, with further quality control of the soil, reinforcement of its surface, creation of a fertile layer and by planting; with that, the total volume value of the soil performing the function of the soil-forming rock, volume of a material for the creation of cutting strips, volume of a material for the reinforcement of the soil surface, volume of a material for the creation of the fertile layer is chosen based on the equality or non-exceedance of the volume of the drilling sludge pit.

EFFECT: obtaining the soil performing the function of the soil-forming rock - a component of natural environment, which has improved quality characteristics.

2 cl, 7 tbl, 1 ex

 

The invention relates to the field of remediation of sludge pits, production of artificial soil mixtures based drill cuttings and can be used in the mining and oil industries.

Known methods for processing drill cuttings into the soil by mixing with additives, which use pre-crushed urea foam in the amount of 5-20% by weight of drill cuttings (EN 2298567, 2007), fly ash, and silica-alumina breed at a certain ratio of components (EN 2084417, 1997), modified peat moss group with water absorbing capacity of not less than 600 wt.% and anhydrous calcium oxide (RU 2187531, 2002). The disadvantage of these methods is the low quality of the soil associated with the presence in the latter of unacceptable concentrations of petroleum constituents.

A known method of reclamation of the drilling mud pits, which includes the release of the barn from the liquid phase of the waste drilling mud, the elimination of the fluidity of its coagulation clots, filling the remaining drilling wastes mineral soil, territory planning. However before releasing determine the concentration of pollutants in waste drilling fluid, and reduce the content of pollutants in the solution to a value below the maximum permissible concentrations, and the liberation is tion produced by the liquid phase through the opening of dikes sludge pits on the relief of the marshland. The disadvantage of this method is the low quality of the soil. In addition, the liquid phase to the relief of the marshland can not lead to deterioration of ecological indicators.

Closer to the invention is a method of reclamation of the drilling mud pits, including filling or hydraulic mineral soil, the construction of the barn, waterproofing barn and fill it spent drilling fluids, the pumping of the liquid phase, the elimination of fluidity coagulation clots. After the elimination of fluidity coagulation clots sludge otvorenej last wells cover the cuttings brought from well pads, where drilling. The dumping of sludge is produced to a level below the edge of the barn on the depth of formation of topsoil, which is filled with a mixture of peat and sand (EN 2251564, 2005).

The disadvantage of this method is that the use of drill cuttings from drilling wells in process raw materials for the recovery of sludge pits leads to low quality of the soil and, consequently, incomplete remediation of sludge pits. In addition, pumping of the liquid phase directly from the original drilling fluid causes the receiving unusable toxic waste.

Thus, this sposobnostyami cumulative barn is not effective enough.

The objective of the invention is to increase the efficiency of the method of reclamation of the drilling mud pits.

This object is achieved are described by way of reclamation of the drilling mud pits, which consists in a sequential collection of liquid oil, then bituminous oil from the water surface of the barn, the pumping of the aqueous phase from the barn, creating cutting dumps, collecting bituminous oil from the surface of the drill cuttings, collect bituminous oil, collecting the oil sludge and oil-contaminated soil from the surface of the dike drilling mud pits mixture obtained cuttings with peat and sand in a ratio,%:

cuttingsno more than 75,0
peatnot less than 18,0
the sandnot less than 7.0

when the total content of the components is equal to 100% vol. in volumes, providing soil functions soil-forming rocks, with subsequent quality control of soil reinforcement surface, the creation of topsoil and vegetation, and the total value of the volume of soil functions soil-forming rocks, the volume of material is to create cutting strips, the volume of material for reinforcement of the ground surface, the volume of material to create a fertile layer is chosen from the conditions of equality or not exceeding the amount of drilling mud pits.

It is advisable in the case of drilling cuttings increased chloride content in advance, before mixing it with peat and sand, carry out the washing of the sludge water and pumping water after washing.

Technical result achieved is to obtain soil functions soil-forming rocks - component of the natural environment, with high quality characteristics by optimizing both qualitative and quantitative content of ingredients used in the described regulation of the sequence of operations for remediation of the barn.

The described method is carried out as follows.

To obtain soil use cuttings that meets the requirements of table 1.

Table 1
Requirements for the properties of drill cuttings
№ p/pIndicesUnitNumberMethods ispy is any
1Oil freshg/kg<65PNDF 16.1:2.2.22-98 GNDF 16.1.38-02 PNDF 16.1.41-2004
2The old oilg/kg<130*
2.1The ratio of alkanes C≤18/C≥18the dimensionless quantity<1,0**
2.2the group of alkanes C≤14% of the total mass of oil products<1,0**
2.3mononuclear aromatic hydrocarbons<2,0**
3Chloride-iong/kg<25***GOST 26425
4Hazard classunitsfrom 3 to 5The order of MNR of Russia of 15 June 2001 No. 511
5Cobalt (mobile form) mg/kg<5,0GOST R 50687-94 GOST R 50683-94 FR. 1.31.2002.00594 RD 52.18.289-90 SanPiN 42-128-4433-87 PNDF 16.1:2.3:3.11-98
6Manganese (mobile form)mg/kg<400,0GOST R 50685-94 GOST R 50682-94 FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98
7Copper (mobile form)mg/kg<3,0GOST R 50683-94 FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98
8Nickel (mobile form)mg/kg<4,0FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98
9Lead (mobile form)mg/kg<6,0FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98
10Chromium trivalent (mobile form)mg/kg<6,0FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98
11Zinc (mobile form) mg/kg<23,0GOST R 50686-94 FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98
* the requirement applies subject to the conditions of paragraphs 2.1-2.3 table 1
* * the indicators are monitored, if necessary, proof of the possibility of oil <130 g/kg
*** - probably above the specified value.

When carrying out the described method is performed:

and the collection of liquid oil (oil emulsion) from the water surface of the drilling mud pits.

For her collection before pumping can be used with any existing skimmers. For a more thorough collection, especially when very thin layer of oil, it is advisable to use the skimmers drives installed on the surface of the water on the pontoons. For pumping with a significant thickness of a layer of oil, as the pump unit can be used for cementing units CA-320, pumping machines PPC-6606 or CO-518 or other equipment suitable for pumping oil.

The collected liquid oil (oil emulsion) is pumped into the oil reservoir until the solid fraction of the waste.

To speed up the process of cleaning the surface drilling was the new barn from separate spots of oil on the surface of the barn, in the area most remote from the point of installation of the oil collecting equipment, mounted small flexible sectional booms with a length sufficient to "blocking" of the drilling mud pits (are made of a special fabric with high strength, resistance to acids, alkalis, oil and oil products) or other devices suitable for this purpose. The boom is set on the periphery of the oil spill and then move in the desired direction.

You can upload in the drilling slurry barn additional volume of water (in the absence or the thickness of a layer of water in the slurry barn less than 30-50 cm) to ensure normal conditions of use, collecting equipment, and small movable booms for tightening oil stains.

b) collection of bituminous oil (peel), separately floating on the water surface of the drilling mud pits. Collecting conduct concentrated spots bituminous oil in one place, why use the boom. Collected bituminous oil transported on specialized objects.

- in) pumping the aqueous phase of the drilling mud pits. Water from the drilling mud pits pumping equipment designed for these purposes, and is injected into the skimmer collector.

Pumping Prov is completed until while you have a chance to drain all free from suspended particles in the water.

- g) creating cutting dumps in the form of strips. To perform work on the seizure of bituminous oil in the form of a crust, sludge from the surface of the drill cuttings and processing of drill cuttings into the soil occiput cutting dumping in the form of a strip to perform work on the entire area of the drilling mud pits. Drilling slurry barn is divided into sections. Cutting strips occiput method comprising the removing of sludge-filled material for cutting strips (e.g., overburden and host rock, the corresponding group of natural rocks) with concurrent precipitation of material in place pushed sludge. Material occiput only on the surface, completely cleansed from cuttings. The cutting strip is built on the queue to prevent extrusion of the cuttings from the drilling mud pits. Overburden and host rock imported to the drilling mud to the barn and loaded into the drilling slurry barn. Cutting dumping (the band) have a kind of technological directions in the form of mounds trapezoidal shape with the width of the upper base of not less than 4 m and a slope of 1:1. Calculation of the volume of overburden and host rock that are required to create cutting strip carried out taking into account the depth of the drilling mud pits and the charge of the rocks.

d) collection of bituminous oil (peel) from the surface of the drill cuttings, collection bituminous oil (peel), oil sludge, oil contaminated soil from the surface of the dike drilling mud pits.

Small spots bituminous oil collected manually. In the case of large amounts of bituminous oil and oil sludge possible cutting. Waste is collected in a specially equipped vehicle, equipped with special characters, and taken on custom objects.

(e) flushing cuttings from the salts (chlorides). Leaching is carried out in the case of the chloride content in the drilling mud more than 25 g/kg For this in the drilling slurry barn serves water, then mix and leave for 10 days for settling. The clarified aqueous phase is pumped into the reservoir. Rinse repeat until you reach the chloride content in the drilling slurry of 25 g/kg or less.

- W) pumping out water after flushing cuttings from the salts (chlorides) of the drilling mud pits.

- C) recycling the cleaned drill cuttings in soil is carried out by mixing the sludge with the selected ingredients in optimal proportions, providing soil functions soil-forming rocks. Ingredients for mixing with the drilling mud, peat and sand discharged directly into the drilling slurry barn on p is the surface cuttings evenly in each section. Then drill cuttings thoroughly mixed with peat and sand to achieve a state of visual uniformity.

Upon completion of the processing of drill cuttings to the ground surface of the land disturbed in connection with the creation of the drilling mud pits may be excess over the surrounding terrain is not more than 0.5 m

and control product quality.

Upon completion of the processing of drill cuttings into the soil functions soil-forming rocks, conduct quality control in accordance with the requirements of the finished product, are shown in tables 2, 3, 4, 5.

The finished product is a homogeneous gruntovalnoy mixture from flowing plastic to crumbly consistency depending on the moisture content of the feedstock. The moisture content of the material obtained is not subject to control.

Table 2
Controlled indices permissible residual content in the soil
№ p/pIndicesUnitNumberTest method
1Not the fresh products g/kg<50PNDF 16.1:2.2.22-98, PNDF 16.1.38-02, PNDF 16.1.41-2004
2The old oilg/kg<100*
2.1the ratio of alkanes C≤18/C≥18The dimensionless quantity<1,0**
2.2the group of alkanes C≤14% of the total mass of oil products<1,0**
2.3mononuclear aromatic hydrocarbons<2,0**
* the requirement applies subject to the conditions of paragraphs 2.1-2.3 table 2
* * the indicators are monitored, if necessary, proof of the possibility of oil <100 g/kg

Table 3
Controlled chemical characteristics of the soil
Nai is inovania indicator UnitThe maximum concentrationTest method
the pH of the aqueous suspensionPH unit5,0-8,2GOST 26423
Chloride-iong/kg<20GOST 26425

Table 4
№ p/pIndicesUnitNumberTest method
1Relative deformation swelling%0-2,4GOST 25100 GOST 518
2Relative deformation of the subsidence%0-0,024
3Hazard classUnitsfrom 4 to 5When the AZ MNR on June 15, 2001 No. 511

Table 5
Controlled indices radiation safety ground
№ p/pIndicesUnitNumberTest method
1The specific effective activity of natural radionuclides (eff)Bq/kg<1500"The method of measurement of specific activity of radionuclides radium - 226, thorium - 232, potassium - 40, cesium - 137, strontium - 90 in samples of products of industrial enterprises, agriculture and environment"

Get the described way, the soil will not have a negative impact on the natural environment, does not preclude the processes of soil formation, and colonization and growth of vegetation, has sufficient bearing capacity to withstand the mechanical loads from the soil and woody vegetation.

- to) reinforcement of the surface of the obtained ground material d is I the reinforcement of the ground surface, for example, khvorostyanoy pillow and forest residue to prevent extrusion of drill cuttings from the drilling mud pits.

- l) creation of topsoil and vegetation.

The fertile layer to create rekultiviruemye surface height of not less than 20 cm To create a fertile layer using materials such as, for example, overburden and host rock, the corresponding group of natural rock for biological reclamation according to GOST 17.5.1.03-86; fertile topsoil removed during earthwork in accordance with GOST 17.5.3.06-85; peat neutralized corresponding to GOST R 51661.4-2000.

After creating a fertile layer of conduct milling 20 cm with simultaneous application of the calculated fertilizer dose.

Planting herbaceous and woody vegetation on land is carried out for fixing the surface of the topsoil. As perennial grasses, it is advisable to use a mixture of different biological characteristics of herbs that provides a more reliable and durable fastening of the pad. The main planting woody material are the willow cuttings.

Carry out the calculation of the following parameters:

a) amount of material for forming the cutting lines (VRP); b) the volume of peat and sand to mix with the drill cuttings (VG); C) the volume is Brazauskas soil, performing the functions of soil-forming rocks (VPOP); d) the volume of material, reinforcing the soil surface (VAWP); d) the volume of material for adding soil functions soil-forming rocks, to the surface of the barn in case of shortage of capacity of the obtained soil to fill the volume of the barn (V); (e) the amount of material for forming the fertile layer (root zone layers) for planting of higher plants used for biological reclamation (VCC).

These values are calculated using the following formulas:

VRP- the volume of soil to create a cutting strips, m3;

q - number of cutting strips is calculated with the following requirements:

- the number of cutting strips should be minimal;

- the distance between the cutting strips not less than 2LSEwhere LSEthe length of the boom of the excavator used for processing drill cuttings;

- use the mixing drill cuttings from the Board of drilling mud pits which can be installed appliances;

dL is the length of the cutting strip, which is determined by the width sludge pits, m;

L is the thickness of the cutting strip (not less than 4 m for the passage of vehicles), m

ha - power cutting strips (equal to guineaman), m;

ρEASTthe true density of the material used for the forming cutting of strips;

ρUS- bulk density of the material used for the forming cutting of the bands.

VG- total volume of peat and sand for processing drill cuttings into the soil, m3;

VBSH- the volume of drill cuttings in the drilling mud barn, m3;

Vpop- the volume of soil functions soil-forming rocks, m3;

VG - total volume of peat and sand for processing drill cuttings into the soil, m3;

VAWP- the volume of material for reinforcement of the ground surface, m3;

hAWP- capacity material, reinforcing the surface of the processed cuttings, m;

Sa is the area of the drilling mud pits m2;

V - the volume of soil required for adding to the surface of the barn, in case of shortage of capacity of the obtained soil to fill the volume of the barn, m3;

VBE- the volume of the drilling mud pits m3;

V - volume of soil functions soil-forming rocks, m3;

VBUS- the volume of material for cutting strips after shrinkage, m3;

V volume of material for cutting strips, m3;

ρ is the true density of the material used for the forming cutting of strips;

ρ - bulk density of the material used for the forming cutting of strips;

VCC- the volume of material for the formation of the root layer (topsoil) for planting of higher plants used for biological reclamation, m3;

0,2 - power root layer that is at least 20 cm

When carrying out the described method, the amount of the total rock volume, perform the function of soil-forming rocks (Vpop), the volume of material for cutting strips (V), volume of material for reinforcement of the ground surface (VAWP), the volume of material to create a fertile layer (VKC) must be equal to or to exceed the volume of the drilling mud pits (VBE).

The described method is illustrated by the example does not limit its application.

Example.

Qualitative characteristics of the original cuttings are shown in table 6.

Table 6
№ p/pIndices UnitNumberTest methods
1The oil fresh.g/kg60PNDF 16.1:2.2.22-98 PNDF 16.1.38-02
2The old oil.g/kg120*
2.1the ratio of alkanes C≤18/C≥18the dimensionless quantity0,8**PNDF 16.1.41-2004
2.2the group of alkanes With≤14% of the total mass of oil products0,75**
2.3mononuclear aromatic hydrocarbons1,7**
3Chloride-iong/kg30GOST 26425
4Hazard classunits4 The order of MNR of Russia of 15 June 2001 No. 511
5Cobalt (mobile form)mg/kg1,0GOST R 50687-94 GOST R 50683-94 FR. 1.31.2002.00594 RD 52.18.289-90 SanPiN 42-128-4433-87 PNDF 16.1:2.3:3.11-98
6Manganese (mobile form)mg/kg100,0GOST R 50685-94 GOST R 50682-94 FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98
7Copper (mobile form)mg/kg2,0GOST R 50683-94 FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98
8Nickel (mobile form)mg/kg3,0FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98
9Lead (mobile form)mg/kg2,0FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98
10Chromium trivalent (mobile form) mg/kg3,0FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98
11Zinc (mobile form)mg/kg18,0GOST R 50686-94 FR. 1.31.2002.00594 RD 52.18.289-90 PNDF 16.1:2.3:3.11-98

Collect consistently liquid oil and bituminous oil in the form of peel from the water surface of the barn. Then pump out the water phase of the drilling mud pits and spend creating cutting dumps in the form of strips. After that drill cuttings are washed from salts and pump out the water after washing. Then collect bituminous oil in the form of peel from the surface of the cuttings, then the collection of bituminous oil in the form of scum, sludge and neftezagryazneny soil from the surface of the dike drilling mud pits. Received cuttings after carrying out the above operations are mixed with peat and sand in a ratio,%: cuttings - 75, peat - 18,0, sand - 7,0. They control the quality of the soil. Then provide reinforcement to the soil surface. Data on residual content of polluting components are shown in table 7.

№ p/p
Table 7
IndicesUnitNumberTest method
1The oil fresh.g/kg5,0PNDF 16.1:2.2.22-98, PNDF 16.1.38-02, PNDF 16.1.41-2004
2The old oil.g/kg12,0*
2.1the ratio of alkanes C≤18/C≤18The dimensionless quantity0,4**
2.2the group of alkanes C≤14% of the total mass of oil products0,5**
2.3mononuclear aromatic hydrocarbons1,0**

The soil also has the following parameters: pH of aqueous suspension 6.5%, the content of the chloride ion is 10 g/kg, relative deformation swelling is 0.9%, the relative deformation of the subsidence is 0.01%, hazard class - 4 the doctor, the specific effective activity of natural radionuclides is 700 units

The fertile layer to create rekultiviruemye surface height of not less than 20 cm were obtained soil mixed with overburden and host rocks, fertile soil, taken at earthwork and neutralized peat, taken in an amount by weight of.% 70, 10, 10, 10, respectively.

After creating a fertile layer of conduct milling up to 20 cm and at the same time make the necessary amount of mineral fertilizers. Then planting of herbaceous and woody vegetation on the land to secure the surface of the topsoil. As perennial grasses use a mixture of grass: Timothy grass, meadow fescue, meadow brome, red clover, as wood material using willow cuttings. After carrying out the described method of monitoring the state of the vegetation, in particular such factors as continuity of grass, pruning of woody vegetation. Continuity of grass, pruning of woody vegetation consists of 95% Rel. and 5% Rel. from the plan, respectively. The total value of the volume of soil functions soil-forming rocks, volume of material for cutting strips of material volume for the reinforcement is poverhnosti soil, the volume of material to create a fertile layer is equal to the volume of the drilling mud pits.

From the above data it follows that the method according to the invention allows to obtain soil functions soil-forming rocks - component of the natural environment, which leads to improvement of the condition of vegetation on rekultivirovana land and improve the environmental performance of the region in which carry out the described method.

1. Method of reclamation of the drilling mud pits, which consists in a sequential collection of liquid oil, then bituminous oil from the water surface of the barn, the pumping of the aqueous phase from the barn, creating cutting dumps, collecting bituminous oil from the surface of the drill cuttings, collect bituminous oil, oil sludge and oil-contaminated soil from the surface of the dike drilling mud pits mixture obtained cuttings with peat and sand in a ratio,%:

cuttingsno more than 75,0
peatnot less than 18,0
the sandnot less than 7.0

when the total content of the components is equal to 100% vol. in volumes, providing soil perform the function of soil-forming rocks, subsequent quality control of soil reinforcement surface, the creation of topsoil and vegetation, and the total value of the volume of soil functions soil-forming rocks, volume of material for cutting strips of material volume for reinforcing the ground surface, the volume of material to create a fertile layer is chosen from the conditions of equality or not exceeding the amount of drilling mud pits.

2. The method according to p. 1, characterized in that in the presence of drilling mud with high levels of chlorides in advance, before it is mixed with peat and sand, carry out the washing of the sludge water and pumping water after washing.



 

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3 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: electrolyser-neutraliser of dissociated contaminations contains pipe casing out of current conducting material and electrodes installed in the casing and connected to source of alternating multiphase current. The casing is made of segments adjoining to each other with creation of the tubular element. The tubular element internal surface at input has constriction, and at output has diffuser. The electrodes are installed in sectors or between sectors in direction of the cleaned flow movement. Sectors are tied up by end cone inserts.

EFFECT: increased productivity due to flowing cleaning of contaminants, simplified replacement of electrodes depending on type of the neutralised wastes.

6 dwg

FIELD: agriculture.

SUBSTANCE: in the method after the preliminary collection of oil from the soil surface, perennial herbal plants resistant to oil-contamination are sown in the oil-contaminated soil simultaneously with the introduction of microorganisms-oil destructors in the form of a solution of a biological product comprising microorganisms-oil destructors with mineral fertilisers.

EFFECT: method enables to increase the cleaning efficiency due to the involvement in the processes of biodegradation of oil-contamination of the wider spectrum of petroleum hydrocarbons and to accelerate the process of the soil recovery.

1 tbl, 2 ex

FIELD: agriculture.

SUBSTANCE: method comprises undercutting of contaminated topsoil, throwing to the bottom of the furrow and piling it with an uncontaminated layer. The contaminated soil layer is undercut by the soil tillage body of a scraper type and moved aside to form a ridge, and the uncontaminated soil fertile layer is opened. The open uncontaminated soil layer is undercut by the combined working body and lifted to the conveyor without the layer overturning. The soil layer is transported first up, then down, leaving a passage for the contaminated layer undercut by the lateral working body of a scraper type under the ridge of the contaminated layer formed by the first working body, and together they are moved to the bottom of the furrow. Then the contaminated soil layer is compacted and closed with the uncontaminated layer passing down from the conveyor. After that the soil is levelled and compacted to the operating width of the device. The device comprises a rectangular frame, support wheels, a mechanism of attachment to the tractor and the working bodies. The first and the lateral working bodies are made of a scraper type. The device also has a combined working body composed of two arranged towards each other rigidly interconnected working bodies of the mouldboard type plough. The total mouldboard part of the combined working body is made truncated in the form of a trough. Behind the combined working body there is a conveyor with ascending, horizontal and descending parts, having a drive of PTO of the traction unit through the power shaft, a reducer and a chain drive. Behind the conveyor a pusher is mounted for levelling the surface of the field after the passage of the device and a packing roller, which is a support one in the transfer of the device to the transport position by the hydraulic cylinder attached to the median longitudinal bar of the frame.

EFFECT: improving the quality of treatment of soil contaminated with radionuclides and heavy metals by avoiding mixing of the contaminated and uncontaminated soil layers in the process of their moving.

7 cl, 2 dwg

FIELD: agriculture.

SUBSTANCE: group of inventions relates to the field of agriculture. The method comprises pasturing by animals, destroying of not eaten, harmful and poisonous plants, levelling animal excrement, and removal of uneaten residues by harrows and rakes, fertiliser application, as well as creation of tree and shrub shelterbelts. At that on the area intended for hayfields and pastures area after pasturing by animals the fertilisers are initially applied, and then the uneaten plants are destroyed, tilting them and applying herbicide by method of smearing it on their biomass, including stems and lower surface of leaves. Harrowing and treatment the grass with rake is carried out after the start of regrowth of plants eaten by animals. The device comprises a reservoir for the herbicide, as well as a pump for feeding it to the tubular perforated rods with means for application of the herbicide to the plants. The perforated rods are mounted behind each other in parallel with the ability of horizontal and vertical displacement, and the device for application of the herbicide to the plants is made in the form of capillary cloth located between the pressure plates and attached on the perforated parts of the said rods which are connected and framed with the cloth and placed in the tubular casings with longitudinal slots through which the cloth is passed, compressed by the pressure plates fixed on the edges of the slots. And the perforated tubular rods are communicated with each other by the hose, at that the inlet end of the front tubular rod is connected to the pump and the outlet end of the rear rod through the drainage tube with the valve - with a reservoir for the herbicide to form a flow regulated system. Furthermore, the perforated tubular rods and their casings are attached to the frame, mounted on the propellers, with freedom of vertical and horizontal displacement.

EFFECT: inventions enable to simplify the technology of creation of forage land on fallow lands with simultaneous formation of tree-shrub belts.

6 cl, 3 dwg, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to environmental conservation technologies, cutting-edge agricultural technologies and chemistry of organosilicon compounds and can be used to restore the structure of disturbed soils by stabilising water-stable aggregate. In particular, the present invention employs water-soluble humic silanol derivatives that are modified in a special way to endow them with the capacity to be irreversibly sorbed on surfaces of mineral particles and other hydroxyl-containing carriers. Humic derivatives are added to the degraded soil in form of aqueous solutions.

EFFECT: method for use in agricultural technologies includes using humic derivatives as structure-forming agents (soil ameliorants) by via attachment thereof to the surface of soil aggregates in order to endow the latter with water-stable properties.

8 cl, 11 dwg, 8 tbl

FIELD: agriculture.

SUBSTANCE: invention relates to the field of environmental protection and can be used in the rectification of the consequences of the oil spill on the soil. The method consists in mixing the oil-contaminated soil, spread over the surface of freshly ploughed uncontaminated field with the thickness layer from 1/10 to 1/6 of the ploughing depth, to the full depth of ploughing using the tiller several times.

EFFECT: invention enables to restore oil-contaminated soil without application of additional neutralising foreign substances and reagents.

FIELD: oil and gas industry.

SUBSTANCE: for biorecycling of oil sludge and oil production and processing waste by means of soil populating with natural black-soil-forming organisms a mixture is prepared with an initial composition of 26-30% of oil sludge, 26-30% of liquid oil sludge and the remaining part of organic domestic waste and/or saw dust, the mixture is infused within 20-24 hours at a temperature of 20-25°C for further populating with earthworms of the first generation, the mixture is withhold within 17-30 days till the earthworms of the second and third generations appear for the purpose of the sludge-contaminated soil treatment. The earthworms of the second and third generations grown in a hothouse conditions by adaption of the earthworms of the first generation to the above mixture are introduced to the contaminated soil. At that introduction of the earthworms of the second and third generations is made at a volume ratio of soil and the mixture equal to 10-15:1.

EFFECT: improving efficiency of the contaminated soils treatment.

4 cl

FIELD: chemistry.

SUBSTANCE: soil-sludge mixture is obtained by thermal treatment and contains a mixture of components obtained by processing wastes in the UZG-1MGZH apparatus for treating oil-contaminated soil in amount of 30-40 wt %, peat 20-35 wt % and sand 20-50 wt %, wherein the mixture of components contains, wt %: vanadium oxide 32.5; carbon 31.4; aluminium oxide 7.5; silicon oxide 7.5; nitrogen oxide 6.8; iron oxide 5.3; hydrogen 4.4; magnesium oxide 1.5; manganese oxide 0.8; lead oxide 0.4; chromium oxide 0.4; zinc oxide 0.4; nitrogen 0.4 and related impurities 0.7.

EFFECT: improving environmental conditions, restoring fertility of oil-contaminated and disturbed lands, higher fertility as a result of enrichment of contaminated soil with oxygen and mineral fertilisers during treatment and reducing oil-contaminated areas.

3 cl, 3 tbl

FIELD: chemistry.

SUBSTANCE: soil-sludge mixture for reclamation of oil-contaminated and disturbed lands contains a mixture obtained by treating a composition consisting of oil sludge, peat, sand and water, with the following ratio of components, wt %: vanadium oxide 32.5; carbon 31.4; aluminium oxide 7.5; silicon oxide 7.5; nitrogen oxide 6.8; iron oxide 5.3; hydrogen 4.4; magnesium oxide 1.5; manganese oxide 0.8; lead oxide 0.4; chromium oxide 0.4; zinc oxide 0.4; nitrogen 0.4; related impurities 0.7. Components of the composition of oil sludge, peat, sand and water are in the following ratio, wt %: oil sludge 30-40%; peat 30-35%; sand 30-35%; water - the balance. The related impurities include a proppant which contains ceramic spheres, a cut of the oil-contaminated soil layer containing crushed stone, and fine wastes of ferrous and nonferrous metals. Treatment involves mixing the composition of oil sludge, peat, sand and water in a hopper of an UZN-1MGZH apparatus.

EFFECT: improving environmental conditions, restoring fertility of oil-contaminated and disturbed lands, higher fertility as a result of enrichment of contaminated soil with oxygen and mineral fertilisers during treatment and reducing oil-contaminated areas.

4 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to environmental protection. The composition for cleaning soil contaminated with oil and motor fuel comprises peat filler, nitrogen and phosphorus fertiliser, used in ratio N:P2O5=1-10:1, zeolite-clay rock modified with a cationic surfactant, and cation-exchange minerals, with the following content of components, wt %: low- or high-moor peat 44.79-93.989; nitrogen fertiliser, N 0.01-0.15; phosphorus fertiliser, P2O5 0.001-0.06; zeolite-clay rock, modified with a cationic surfactant 1-15; cation-exchange minerals 5-40.

EFFECT: invention provides localisation and biodegradation of a hydrocarbon contaminant with high efficiency and prolonged effect.

6 cl, 4 ex

FIELD: soil restoration from formation fluid contaminants in oil recovery and transportation regions.

SUBSTANCE: claimed composition contains (mass %): chemical ameliorant 3.5-5.7; organic fertilizer 15.7-29.0; adsorbent 67.5-78.6. Method for sectioning soil treatment includes application of composition onto soil layer with 30 cm of depth. Then treated layer is shifted out of spot boundary. Opened surface is covered with composition of present invention. Then mole drainage of 60-65 cm in depth is made in soil by using mole plow or chisel plow, followed by plowing of 58-51 cm in depth and returning of sheared soil into spot.

EFFECT: effective soil restoration from formation fluid contaminants.

5 cl, 2 dwg, 1 tbl

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