Man-made peaty soil for reclamation of oil-contaminated and disturbed lands

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

 

The invention relates to the protection of the natural environment, in particular to the ground anthropogenic startwindow for remediation of contaminated and disturbed lands resulting from reprocessing (decontamination) drilling waste, contaminated by oil and soil, sludge cleaning of pipelines, tanks, and is intended for use in reclamation of disturbed lands during construction of linear structures and pad sites; elimination of drilling mud pits, tailings ponds, waste oil pits (making the insulating layer); the creation of reclamation layer when remediation of contaminated land; the consolidation of embankments and slopes infield roads, pad facilities on the territory of the license areas of subsoil users; reclamation of quarries minerals, ores in open-pit mining, overburden dumps to create the fertile soil layer; filling the peripheral parts of the cluster bases; dumping areas short-term leases granted for the period of construction of field facilities construction; strengthening of embankment embankment pads, slurry pits; installation of foundations for roads, pipelines in trenches, foundations, tanks in rtically steel (RVS) and other; shelter and isolation of waste during remediation of disposal sites.

The prior art soil binder and the composition of reclamation, including the products of a mixture of: water; a carbohydrate; a protein; iron compounds; strong base and a fibrous material (US 7005005, 28.02.2006).

Known soil binder and the composition of reclamation, suitable for applying to bare soil to prevent or slow down soil erosion, and products including mixtures: part of the soil binder needed to bind soil particles and containing: water; a carbohydrate; a protein; iron compounds; and a solid Foundation for increasing the solubility of carbohydrates and proteins in water, making the composition of a strongly alkaline pH, at least initially; and part of the soil recultivation of disturbed lands, including: fibrous material containing at least two different types of fibers, one of the types of fibers that contribute to the adhesion of the composition of the soil and other types of fibers, which contribute to the emergence of new germinated seeds or plants through the fibrous material in the soil (US 7021864, 04.04.2006).

Known composition for remediation of oil-contaminated soils, in which the oxidizing component is used along with other fine sulfur, for intensification of the process of biodegradation in the composition is added activated sludge or org is nick and adsorbent, and as the oxidizing component may be used nudegailoannude or insufficiently degassed sulfur (EN 2009101698, 27.07.2010).

Disadvantages are the lack of disinfection of oil sludge and other contaminants.

The problem to which the proposed invention is directed, is to create gerontology mixture for remediation of contaminated and disturbed land, which would exclude the disadvantages indicated above.

The technical result of the invention is the improvement of environmental conditions, restoring the productivity of contaminated and disturbed land, increased fertility in the enrichment when cleaning contaminated lands oxygen and mineral fertilizers and accordingly reducing neftezagryaznennyh sites.

This technical result is achieved in gerontology mixture for remediation of contaminated and disturbed land, containing obtained by processing the composition of the sludge, peat, sand and water, the mixture in the following ratio, wt.%:

The vanadium oxide32,5
Carbonof 31.4
Oxide and uminia 7,5
The silicon oxide7,5
Nitric oxide6,8
Iron oxide5,3
Hydrogen4,4
Magnesium oxide1,5
Manganese oxide0,8
The lead oxide0,4
The chromium oxide0,4
Zinc oxide0,4
Nitrogen0,4
Concomitant impurities0,7

The ratio of composition of the sludge, peat, sand and water is, wt.%:

Oil-slime30-40%
Peat30-35%
The sand30-35%
Waterrest

Concomitant impurities include proppant containing KERS is ical balls, cutting oil-contaminated layer of soil containing gravel, and small ferrous and non-ferrous metals, namely, metal alloys of steel, aluminum, copper, brass, lead, zinc, chromium.

Processing includes mixing the composition of the sludge, peat, sand and water in the hopper installation is the SAME-MGR. Gronostajowa mixture for remediation of contaminated and disturbed land is a homogeneous gruntovalnoy mixture from plastic to crumbly consistency, depending on the moisture content of the feedstock.

Humidity freshly prepared material is in the range of 40-70%. In the process of elaboration and storage of the mixture, with stirring and exposure to air for 1 to 30 days there is an alignment of moisture in the sample mixture, the material becomes friable or visco-plastic consistency. Immediately before laying the moisture content of the mixture should be brought to values close to the optimum compaction, i.e. from 20+/-5% to 40+/-10%.

Delivered to the place of use of the material is deposited in the structural layers of a thickness of 0.3-0.5 m for reclamation of quarries and a layer of 0.20-0.30 m in reclamation of disturbed lands.

After packing and distribution in the structural layer material compacted to the compaction factor of not less than 0.9 at a depth location 1 m from the ground surface and not less than 08 at depth of laying more than 1 m from the ground surface.

On compacted structural layer of this material is permitted laying the higher layers immediately after compaction.

Gronostajowa mixture for remediation of contaminated and disturbed land contains obtained by processing in a bunker setup is the SAME-MHZ composition of the sludge, peat, sand and water (slime - 30-40%, peat - 30-35%, sand - 30-35%, water - else), the mixture in the following ratio, wt.%:

The vanadium oxide32,5
Carbonof 31.4
Aluminium oxide7,5
The silicon oxide7,5
Nitric oxide6,8
Iron oxide5,3
Hydrogen4,4
Magnesium oxide1,5
Manganese oxide0,8
The lead oxide0,4
The chromium oxide0,4
Oxide C is NSV 0,4
Nitrogen0,4
Concomitant impurities0,7

which includes a proppant containing ceramic balls, cutting oil-contaminated layer of soil containing gravel, and small ferrous and non-ferrous metals, namely, metal alloys of steel, aluminum, copper, brass, lead, zinc, chromium.

As improving additives in addition gerontology mixture may contain small doses of the following types of substances:

drugs that accelerate the degradation of oil and other harmful substances to the environment;

- sorbents, kapsulirujushchej drugs, providing the binding and inactivation of toxins;

- fertilizers (mineral and organic), deoxidizing, improving the quality of the material with biological reclamation.

Physico-mechanical properties gerontology mixture

PropertiesIndicatorsThe method of determining according to GOST
1. Humidity20-40/30-505180-84
2. The mixture density, g/cm3t/m3 1,60-2,00/1,40-1,605180-84
3. The density of dry soil, g/cm3t/m31,45-1,75/1,25-1,505180-84
4. The strength of the soil
the shear resistance kgf/cm2(MPa)
≥1,0(0,1)/-30416-96
5. Compacting factor0,80-0,90/-5180-84

The sludge - waste production, preparation and transportation of oil obtained from the Stripping tank farms pump stations, which are hardly separated mixture of oil, boiling in a wide temperature range, include water, fur. impurity - clay, sand, iron sulfides, and more. Intervals boiling 80% of the mass from 216 to 350°C. the water Content -18% by weight, content of sand, clay and iron sulfide -10% mass. Selected from a tank of slime is a black gelatinous paste, followed by heating up to 57°C in an easily flowable liquid at a density 0,854 g/ cm3.

Sand as a filler for protoslavic mixtures, in accordance with GOST 25100-95 applies to the following taxometric units:

Class II - natural dispersive soils.

Group - incoherent GRU is you.

- Subgroup - sedimentary soils.

- Type - silicate rocks.

- View - Sands.

- Varieties - can be applied to almost all types of sand available in the region.

Peat in the mixture plays the role of filling and sorbing material, linking, destructuring oil and other contaminants and prevent their migration into the environment, as well as the role quasirandom substrate, causing fertility mixture, creating optimal conditions for the growth of plants - herbs, shrubs and trees for biological reclamation.

Peat - dispersed, sedimentary, organic soil, formed as a result of natural dying and incomplete decomposition of marsh plants in conditions of high humidity when the lack of oxygen and containing 50% (by weight) or more organic substances.

According to the degree of decomposition can be used peat from laboratoriesa (less than 20) to silnoroslye (more than 20).

According to the degree of ash content of the peat can be used normalroutine (less than 20) and high ash (more than 20).

Peat is extracted from specially prepared pits, drainage and technology development which is submitted to the environmental authorities.

Use of peat with an acidic medium at a pH not lower than 3-4.

Before the development of the second section of peat deposits made its preliminary drainage by dividing the drainage ditches on the map with the provision of water flow.

After excavation of peat stored in a pile on the ground for grinding and drying for up to 1 month at positive temperature by exposure, mixing or milling.

The moisture content of the peat before using it in a mix for reclamation, as a rule, should not exceed 10-15%.

Suitable for use are the brand of peat a and B:

marque And corresponds peat herbal and woody-herbal group with degree of decomposition up to 20% and acidity at pH above 4.5;

marque B corresponds peat, fen and transition group with the degree of decomposition up to 20% and the acidity of not less than 3.

To improve the environmental performance of sludge utilization in mixes for reclamation recommended supplements active substances and sorbents, contributing to a more complete binding of toxicants and retain them in the structure of the material, eliminating residual migration ability of pollutants and allowing to receive IV-V hazard class composition.

Such reagents that activate processes of interaction of soil binders and components of oil and linking that Deplete oil and other hydrocarbons are a number of known substances: lime, pulverized peat, sawdust, drug Dew, oil-adsorbing sorbent "Mikail", sorbent Miu, aluminosilicate sorbents biodestruction hydrocarbons "SOILEX", "Degradable", "Centrin", kapsulirujushchej drug "Rizal" and others.

The total fertility mixture is ensured by the presence quasibanach plant components in peat soils, and the presence of a number of nutrients of organic and mineral compounds in drilling sludge compounds of phosphorus, nitrogen and potassium. However, when creating the root reclamation layer to provide plants with the necessary number of batteries in gerontology mixture according to the results of the analysis of samples is payable estimated amount of batteries and deoxidizer.

Disposal of waste at the facility "the office of the Ombudsman-MHZ" (installations for the disposal of oil-contaminated soils-MGR) reduces the concentration of oil in the sludge 99.9%, applied in installing the device off-gas treatment unit irrigation allows to reduce emissions of harmful substances into the atmosphere (the purification coefficient for suspended solids 97,3%, the efficiency of purification to 88.4%).

The unit operates from AC mains with a rated voltage of 380 V, frequency 50 HZ and can be used in field conditions with power from a generator or in specially equipped areas.

In the installation kit includes:

- boot the feeder oily waste into the chamber recycling;

- high temperature cameradigital;

- ejecting liquid-fuel burner GZH-300;

- fuel tank 400 V DM3;

handling device;

device processing exhaust gases;

- block irrigation;

- remote control;

- drive.

Waste occurs in the high temperature chamber, representing a rotary drum mounted on the supporting rollers driven by a gear motor.

Necessary for the disposal of oily waste temperatures created by the combustion of liquid fuel in the injection liquid-fuel burner, and the combustion of organic compounds present in delaborated waste.

The fuel supply to the burner is effected by gravity from the fuel tank.

Delaborated wastes are delivered in high temperature chamber from the hopper drive using the Transporter.

Installation mounted on the frame having an adjustment device for changing the angle of inclination of the drum along its axis.

Discharging the neutralized material is made into a removable hopper. Treatment of off-gases produced in the installation type "Cyclone" (9) unit irrigation.

Start installation, it is in the operating mode and the stop are made with the remote control.

Preparatory work

In the preparatory period are as follows:

- Vyber who are and examined the site for mixing;

- defined scope and sequence of work, composition, properties, and volume of waste sludge, soils and additives;

- is the selection of mixes, determined by their physical-mechanical properties and the degree of binding of contaminants;

- prepare equipment and driveways;

- determined economic efficiency;

- coordinated operation.

Design of structures protoslavic mixtures

Correctly selected gronostajowa mixture must comply with the requirements of this regulation and to be V class of danger for the environment.

To use the accepted composition having the required physical and mechanical parameters at the highest dose of sludge, as well as meeting the requirements of biological reclamation and environmental safety.

Optionally, additional processing of sludge and gerontology mix supplements with the specification of their dosage.

Preparation protoslavic mixtures

Preparation of the mixture may on a special polygon, prepared site in the slurry barn.

The device platform for processing drill cuttings and mixing with peat and sand:

- marking works, landscaping the grounds, playgrounds, uplo the imposition of the soil;

- waterproofing pad by laying polyethylene film layer 2 on square base;

- the dumping ground soil at the project level when the thickness of the protective layer is not less than 0.5 m to groundwater levels;

- waterproofing pad can be provided clogging pores sandy soil clay-colloid phase, which occurs in the process of work, when the impregnation of the surface of the soil suspension, or after mixing in the layer thickness of 15-20 cm

Processing of sludge building material - mixture gerontology:

- transportation of sludge to the place of processing in equipped trucks;

- developing, loading and transportation of the prepared peat and sand or ready peat-sand mixtures;

- unloading of the components of the mixture to the working area with the formation of the shafts (with stirring excavators) or layers (with stirring mills).

It is also possible to pre-importation of soil preparation and consistent "spreading" the bulldozer peat, sand and sludge layers 15-20 cm length of 100 m and a width of the strip of 2.0 - 2.5 m, followed by stirring layers cutter FBN-2 in the unit with the tractor DT-B.

Sampling for test and confirm the suitability of the material for use.

Introducing, if necessary, additives to bring the mixture up to class 5 ASO the activity, give it the necessary water-physical and agrochemical properties and then milling strips.

Collection of prepared mixture with the hook in the piles-piles bulldozer, storage of the mixture.

Preparation of a mixture in the slurry barn is performed by the above-described technology with advanced reinforcement and insulation polymer film contained in the barn sludge. Stirring of the mixture is carried out by excavator.

1. Gronostajowa mixture for remediation of contaminated and disturbed land, characterized in that it contains obtained by processing the composition of the sludge, peat, sand and water mixture in the following ratio, wt.%:

The vanadium oxide32,5
Carbonof 31.4
Aluminium oxide7,5
The silicon oxide7,5
Nitric oxide6,8
Iron oxide5,3
Hydrogen4,4
Magnesium oxide1,5
Manganese oxide0,8
The lead oxide0,4
The chromium oxide0,4
Zinc oxide0,4
Nitrogen0,4
Concomitant impurities0,7

2. The mixture according to claim 1, characterized in that the ratio of composition of the sludge, peat, sand and water is, wt.%:

Oil-slime30-40%
Peat30-35%
The sand30-35%
Waterrest

3. The mixture according to claim 1, characterized in that the concomitant impurities include proppant containing ceramic balls, cutting oil-contaminated layer of soil containing gravel, and small ferrous and non-ferrous metals.

4. The mixture according to claim 1, characterized in that the processing includes mixing the composition of the sludge, peat, sand and water in the hopper installation is the SAME-MGR.



 

Same patents:

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FIELD: biotechnology.

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2 tbl

FIELD: chemistry.

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3 cl, 3 ex

FIELD: agriculture.

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2 cl, 8 dwg

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4 cl, 4 dwg

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2 cl, 1 tbl, 1 ex

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2 tbl, 7 ex

FIELD: process engineering.

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EFFECT: simplified and accelerated reclaiming of soil contaminated with heavy metals.

1 ex

FIELD: process engineering.

SUBSTANCE: invention relates to reclamation of soils contaminated in oil-and-gas production. For reclamation of soils special site is arranged to make soil-slime mix by mixing drilling slime, said and peat, to be held for definite time and delivered to application point. Mote here that drill cuttings are transferred to said site by specially equipped dump trucks as well as peat and sand. In compliance with the first version, the mixes are dumped to make three enclosed rolls to be mixed by excavator. In compliance with the second version, peat, sand and slime are uniformly spread in 15-20 cm-thick 100 m-long and 2.0-2.5 m-wide bay and mixed by cutter. Now, the mix is cured for 1-30 days to level moisture content of mix pile and to make equal to from 10±5% up to 40±10% .

EFFECT: better environmental conditions.

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

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EFFECT: effective soil restoration from formation fluid contaminants.

5 cl, 2 dwg, 1 tbl

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EFFECT: increased survival rate and yield of plants and reduced recultivation time.

2 cl, 2 ex

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EFFECT: enabled biological protection of land from heavy metal pollution.

2 ex

FIELD: environmental protection; oil and gas producing industry; methods of purification of subterranean water beds and soils from industrial pollution.

SUBSTANCE: the invention is pertaining to the field of environmental protection, in particular, to purification of the subterranean water beds and soils from industrial pollution by liquid hydrocarbons. In the polluted zone they drill a borehole, create and maintain in it a negative pressure within the limits of 2 kgf/cm2 up to 0.8 kgf/cm2. At that they simultaneously exercise extraction of the product of impurity from the borehole. The technical result of the invention is an increased amount of the pollution product extracted from the borehole per a unit of time.

EFFECT: the invention ensures an increased amount of the pollution product extracted from the borehole and its purification per a unit of time.

5 cl, 1 dwg

FIELD: disposal of solid waste.

SUBSTANCE: method comprises removing the contaminated layer of soil, separating the large impurities and biomass, grinding the contaminated layer by dispersing in water environment to produce pulp which is treated by ultrasound for disintegration of water-resistant agents, and supplying the pulp for separating the destructed agents into density and sizes of the particles by gravity to produce and separate the rectified coarse mineral and organo-mineral fraction, and draining contaminated fine dispersed mineral, organo-mineral, and organic fractions. The deposit containing radionuclides and heavy metals are separated, dried, and fed to the processing and burying. The purified water solution is returned for the repeatable use.

EFFECT: enhanced efficiency and quality of cleaning.

22 cl, 1 dwg

FIELD: agriculture, in particular, environment protection, more particular, reduction of 137Cs level in soil.

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EFFECT: reduced specific activity of 137Cs in soil, increased efficiency in removal of radio nuclides and obtaining of ecologically clean plant products, reduced possibility of external and internal radiation of people.

2 tbl

FIELD: agriculture, in particular, cultivation of ecologically pure farm products on soil contaminated with radio nuclides.

SUBSTANCE: method involves practicing steps enabling reduction in accumulation of radio nuclides within various crops, said steps including utilizing mineral and organic fertilizers; introducing mineral fertilizers for cultivation of the following crops: winter rye, winter wheat, oats, and potato, with nitrogen to potash ratio making 1:1.5; applying organic fertilizers for cultivation of lupine and serradella, and additionally providing liming of soil for barley cultivation.

EFFECT: reduced content of radio nuclides in main rotation crops.

FIELD: environmental protection.

SUBSTANCE: method comprises applying mineral nitrogen and phosphorus fertilizers simultaneously with the natural high-porosity mineral draining agent made of an aluminosilicate and subsequent loosening down to a depth of 25-30 cm. The ratios of the components are presented.

EFFECT: reduced cost.

6 ex

FIELD: disposal of solid waste.

SUBSTANCE: device comprises vehicle provided with the tank filled with coolant, collector that is used for supplying coolant and is connected with the tank though a T-shaped hose having detachable branch pipes connected with the appropriate cooling chambers. The cooling chamber is made of a box whose open section faces the surface to be frozen and receives the collector for spraying the coolant. The outer walls of the chamber are provided with face and side flanges that form a closed space for circulating coolant. The chamber walls are provided with means for interconnecting the chambers.

EFFECT: enhanced efficiency and reduced coolant consumption.

2 cl, 5 dwg

FIELD: restoration of soil contaminated with oil.

SUBSTANCE: at first stage, upper layer of oil sludge is collected and refuse is separated on vibrating screen; then oil sludge is subjected to centrifuging for separation of water, remaining refuse and mechanical admixtures. At second stage, middle layer of oil sludge is collected; this layer contains substratum water which is first cleaned from refuse by passing it through vibrating screen; then, water is subjected to centrifuging for separation of oil sludge, remaining refuse and mechanical admixtures from it; they are washed in surfactant solution. At third stage, bottom sediment is collected and is washed in surfactant solution for separation of oil sludge; then, refuse is separated from oil sludge in vibrating screen, after which oil sludge is subjected to centrifuging for separation of remaining water, refuse and mechanical admixtures.

EFFECT: increased degree of separation of oil sludge into cleaned oil sludge, water, refuse and mechanical admixtures.

3 dwg

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