The method of purification from oil products ground port hydraulic structures

 

(57) Abstract:

The invention relates to the field of environmental protection in port and is designed for cleaning a ground port hydraulic structures from petroleum products falling within the period of their operation in the ground due to leakage netpodium pipelines and local oil spills during the loading of ships. When cleaning up from oil ground port hydraulic structures with sheet wall, through the collection and discharge of petroleum products using vertical wells equipped with pumps, vertical wells placed at least quay track in the area of hydraulic structures with a pitch in the row, the value of which is 17-26 diameter vertical wells. In this zone isinjected through horizontally or obliquely placed drainage and steam needle installed below the level of the aquifer through the holes in spotboy wall waterworks using tightly coupled with her camera. The technical result is to increase the efficiency of purification from petroleum products soil port hydraulic structures and the prevention of pollution of aquatone environment in the waters of the port, and in particular to methods of cleaning a ground port hydraulic structures from petroleum products falling within the period of their operation in the ground due to leakage netpodium pipelines and local oil spills during the loading of ships.

A known method of cleaning contaminated by oil or oil products of the soil by leaching with water and their subsequent collection, in which the leaching of oil or oil product in the array of ground along the contour of its pollution level of the aquifer must be LDA-dirt wall with the embankment on the surface, while the leaching of oil or petroleum products are the injection of water into the underlying aquifer through injection wells to raise the level of water in oil or oil to the surface (RU, patent N 2071671, CL B 09 C 1/00, E 01 H 12/00, E 02 B 15/04, E 02 D 31/00. Publ. 10.01.97).

The disadvantage of this method is that when the leaching of oil or oil product water by injection into the underlying aquifer through injection wells to improve water with oil or oil to the surface not provided with the necessary degree of purification of the array of soil from these contaminants, because in that this array of soil remain migrationcontinue and reliably held by the soil asphalt-resinous fraction. This cleaning method is applicable only to reduce the primary severe contamination of ground arrays.

In addition, the frosting before leaching of oil or oil product, Lido-dirt wall in the array of ground contour pollution is associated with lowering the temperature adjacent to Lido-the dirt wall of the volume of the soil mass, which affects the efficiency of its cleaning from oil and oil products, because if you lower the temperature of the soil increases the viscosity of these contaminants. As a result, the speed of their transition into the aqueous phase is significantly slowed down. At the same time without migrationcontinue asphalt-resinous fractions become less mobile and more securely held by the soil.

The closest is the method of collection and removal of petroleum products from the surface of the groundwater by means of vertical wells equipped with pumps in which the well is placed in the Central part of the zone of the oil pollution on the external and internal closed contours, and well the outer contour of the suit to a greater depth than the bore of the inner contour, and collection of petroleum products produced from centre strouble. 30.10.92).

The disadvantage of this method is that this method does not provide the necessary degree of purification of soil from oil, as by means of vertical wells equipped with pumps, collects, and the removal only of dissolved petroleum products, as well as free of oil, while in the array of ground remain migration inert and reliably held by the soil asphalt-resinous fraction.

The basis of the invention is to provide a method of purification from oil products undisturbed array of ground port hydraulic structures without taking them out of service for the collection and diversion not only dissolved in water and megkotesenek from an array of soil fractions of petroleum products, but also the migration of inert, securely held by the soil fractions of petroleum products, placing them in active flowable and legkodelimae from a ground state that will improve the efficiency of petroleum products soil port hydraulic structures and to prevent contamination of the water area of the port oil.

Achieving the above technical result is ensured by the fact that in the method of cleaning OA petroleum products using vertical wells, equipped with pumps, vertical wells placed at least quay track in the area of hydraulic structures with a pitch in the row, the value of which is 17-26 diameter vertical wells in this area isinjected through horizontally or obliquely placed drainage and steam needle installed below the level of the aquifer through the holes in spotboy wall waterworks using tightly coupled with her camera.

Made in quay track area waterworks vertical wells can be placed in a checkerboard pattern.

In the area of the vertical wells in the array of ground can be installed vertical perforated steam needle for additional submission of steam.

Through horizontally or obliquely placed drainage and steam needle can be a supply of chemical detergent, alternating with filing them in steam.

Through the vertically mounted perforated steam needle can be a supply of chemical detergent, alternating with filing them in steam.

After the filing of steam through SS="ptx2">

The supply of steam through horizontally or obliquely placed drainage and steam needle may be provided with a supply of them in compressed air.

After the filing of steam through the vertically mounted perforated steam needle may be provided by compressed air.

The supply of steam through the vertically mounted perforated steam needle may be provided with a supply of them in compressed air.

After the removal of oil pumps of vertical wells can be additional to collect oil from the water surface in vertical wells, and collection of petroleum products is carried out by sorption.

The accommodation is equipped with pumps vertical wells for collection and removal of petroleum products at least quay track in the area of hydraulic structures with a pitch in the row, the value of which is 17-26 diameter vertical wells, and the flow in this zone steam through horizontally or obliquely placed drainage and steam needle installed below the level of the aquifer through the holes in spotboy wall waterworks using tightly coupled with her Kama the products of undisturbed array of soil by collecting and draining not only dissolved in water and megkotesenek from an array of soil fractions of petroleum products, but migration inert, securely held by the soil fractions of petroleum products, placing them in active flowable and legkodelimae from the ground state. This helps improve the efficiency of petroleum products soil port hydraulic structures and to prevent contamination of the water area of the port oil.

The supply of steam through the installed below the level of the aquifer, horizontally or obliquely placed drainage and steam needle provides heating array of soil and liquefaction contained petroleum products, which allows to translate all fractions of petroleum products in the active flowable, legkodelimae from the ground state. However, the installation of drainage steam needle below the level of the aquifer and their horizontal or inclined disposition allows to supply steam into the thickness of the soil below the front (level) maximum concentrations of petroleum products, which provides the dilution available in the earthen array of petroleum products in their full volume.

Step placement of vertical wells in a row, the value of which is 17 - 26 diameter vertical wells, determined on the basis of area (radius) effective collection razgovora waterworks and conditions ensure the strength of the upper cover and reliability of hydraulic structures in General.

Thus placement of vertical wells with a step whose value is less than 17 diameter vertical wells, leads to unnecessary from the point of view of technology cleaning excessive convergence in a series of adjacent vertical wells to each other, which may affect the strength of the upper cover quay track part of the waterworks and to cause its deformation due to the violation of its integrity, and given that part of the port quay track hydraulic structures bear an increased load during the operation of hydraulic structures, this may degrade the reliability of hydraulic structures in General. In addition, in this step, the placement of vertical wells may damage the power elements port hydraulic structures during the drilling of these wells.

At step placement of vertical wells over 26 diameter vertical wells between zones effectively collect liquefied acute ferry petroleum products adjacent vertical wells are still areas of soil mass, these unreached areas. This reduces the efficiency of collection and removal of oil, and hence the efficiency of cleaning soil from netart the s port hydraulic structures during the drilling of these wells.

The accommodation is equipped with pumps vertical wells for collection and removal of oil quay track area waterworks and supply in this area steam cleans from petroleum products soil mass quay track zone hydraulic structures, thereby creating a barrier from the cleaned soil mass on the path of penetration of oil products from the Central part of the hydraulic structures on the water area of the port, which prevents it from oil pollution.

Accommodation in a checkerboard pattern made in quay track area waterworks vertical wells contributes to a more efficient collection of oil in the composition of the aqueous phase flowing in the process of heating with live steam oil-contaminated soil mass, as in this case, the width of the quay track zone hydraulic structures is formed thicker area to collect oil.

Additional supply of steam to the zone of placement of vertical wells through the vertically mounted in the ground perforated steam needle allows to intensify the process of heating with live steam oily gruntovaya in the soil perforated steam needle coupled in the supply of live steam through the installed below the front maximum concentrations of petroleum products, horizontally or obliquely placed drainage and steam needle significantly reduces the time required for heating the purified oil-contaminated soil and liquefaction contained petroleum products in their full extent, because it horizontally or obliquely placed drainage steam tip provide ascending streams of steam penetrating oil-contaminated ground upward, vertically mounted perforated steam tip provide radially directed, horizontal flow direct steam directly in the thickness of the contaminated soil, thereby creating mutually perpendicular threads, permeating the whole of the volume of treated soil mass.

Flow through horizontally or obliquely placed drainage and steam or vertically mounted perforated steam needle chemical detergent, alternating with feeding them live steam, allows to intensify the process of cleaning soil from petroleum products, for example, when cleaning heavily contaminated with petroleum products groundwater arrays.

The compressed air after the filing of a sharp pair or alternation of the hearth is on array thereby liquefaction contained in the earthen array of petroleum products in much larger volume.

Produced after the removal of oil pumps of vertical wells and carried out by sorption additional collecting oil from a water surface in a vertical wells is to be deleted from the specified surface film of oil. This ensures the achievement of a given (valid) values of the residual oil concentrations in the treated soil array.

The invention is illustrated by the following drawings. In Fig. 1 shows a process scheme purification from petroleum products soil port hydraulic structures, view in plan; Fig. 2), the same incision.

The method of purification from oil products ground port hydraulic structures is as follows.

Contaminated due to leakage netpodium pipelines and local oil spills during loading of the courts and to be treated ground port hydraulic structures is divided into sections. The dimensions of each section along the length determined by the length used for the treatment naprimer, when the length of thermocamera 13,02 m length is 8-12 m Width of each area depends on the design features of the topside hydraulic structures. As thermocamera 2 uses the device for repair of the underwater parts of hydraulic structures (RU, patent N 2098546, CL E 02 B 1/00. Publ. 10.12.97. Bull. N 34), comprising a working chamber in the form of prefabricated sectional frame with the bearing of the working platform and with fastenings in the form of brackets. In the working chamber has a device for water drainage. The fastening device to spotboy wall hydraulic structures is carried out by means of a frame-template fastened by bolts to spotboy wall and racks to the upper structure of the waterworks. Prefabricated sectional frame in addition to the working chamber is provided with two having nozzles compartments filled with water to increase the pressing device to the frame template.

For each subject the clearing of land for drilling vertical wells 3 installing casing perforated pipes, provided with a mesh filter 4. The number of vertical wells 3 in one area depends on the diameter of the wells, the step of placing them in a row, number of rows, the holes in two rows in a staggered manner and the length of the portion 11 m of the number of wells is 7 pieces. Vertical wells 3 are equipped with centrifugal pumps 5 at the rate of one pump for 3 to 4 wells. Centrifugal pump 5 via pressure hoses 6 are connected with the drain manifold. Suction valves 7 centrifugal pumps 5 are installed in wells 3 minus 1,5-2,0 m

To install drainage and steam needle 8 engaged in the supply of live steam in the ground below the level of the aquifer, to spotboy wall waterworks secures thermocamera 2. After you install thermocamera 2 spotboy wall 1 waterworks from thermocamera 2 is drilling holes with a diameter of 83 to 89 mm by using a boring machine and then installing these holes in the ground drainage and steam needle 8. Holes in spotboy wall 1 in the field installation of drainage steam needles are equipped with seals. Installation in ground drainage and steam needle is driving manually or using pneumotachometer. The length of the drainage and steam needle is 1.5 m, diameter 48 - 50 mm Number of drainage-steam needles in one area waterworks is 3 to 4 pieces. Drainage and steam needles are installed in the ground below uroo plant is uncoupling of thermocamera with spotboy wall waterworks and swap it for a new one to be treated plot.

The process of cleaning oil-contaminated soil by drainage of oil in the composition of the aqueous phase originating from warm-up oil-contaminated soil by direct steam. Removal of the aqueous phase is made by pumping the last of vertical wells, arranged in the earthen array, using centrifugal pumps. Pumping contaminated water is in the drain manifold, then into the storage tank, and then through the flow meter using the transfer pump into the storm drain system.

Heating oil-contaminated soil and liquefaction contained in petroleum products by feeding steam with a temperature of 130 - 140oC and pressure of 1 to 2 ATM in thickness of the soil mass through the drain-steam needle 8.

To intensify the process of heating with live steam oil-contaminated soil and liquefaction contained petroleum products in the area of placement of vertical wells is additional supply of steam through the vertically mounted in the ground perforated steam needle 9. This allows the combination of feeding steam through the horizontally placed drainage and steam needle 8 considerable Teradata oil in it.

To increase heated by direct steam volume of the soil mass and ensure liquefaction contained in the earthen array of petroleum products in much larger its volume after the filing of steam through the drain-steam needle 8 or steam needle 9 is used to supply them in compressed air at a pressure of 2-3 ATM or alternating supply steam through the drain-steam needle 8 or steam needle 9 filing them in compressed air.

In order to intensify the cleaning process, for example when cleaning heavily oil-contaminated soils, conduct soil cleaning from petroleum products using a chemical detergent on the basis of polyacrylamide is supplied through the drain-steam needle 8, alternating its filing with the filing them in steam. It is also possible to supply chemical detergent through the vertically mounted perforated steam needle. As such a chemical detergent may, for example, use of UBON (Universal waste-free umyvadel petroleum products) on the basis of the sodium salt of polyacrylic acid.

After the removal of oil centrifugal pumps of vertical wells may p this collection of petroleum carried out by sorption. This ensures the achievement of a given (valid) values of the residual oil concentrations in the treated soil array.

Remove the film of oil from the water surface in vertical wells there is a flat Mat of absorbent material, then lifting and squeezing in cumulative capacity.

The gathering film of oil from the water surface in a vertical wells may also be performed using probes immersed in the casing perforated pipe vertical wells. When changing the water level in Sosunova space due to the fluctuation of the level of the water area of the port is moving layer of contaminated water along the vertical axis of the casing perforated tube and the absorption of oil by the drug inside the probe housing. As this drug is used "Biosorbent-containing saturated with microorganisms absorbent and which is an effective means of purification from oil pollution. Effective and harmless absorbents from natural minerals are silicates, such as expanded vermiculite. As organic food products are used microorganic. As testing biosand rises from the well. Saturated with oil, the drug is extracted and utilized, and the probe housing is filled with a fresh portion of Biosorbent and again immersed in the well. The cleaning process is repeated until the required concentration of oil products.

1. The method of purification from oil products ground port hydraulic structures with sheet wall, through the collection and discharge of petroleum products using vertical wells equipped with pumps, characterized in that the vertical wells placed at least quay track in the area of hydraulic structures with a pitch in the row, the value of which is 17 - 26 diameter vertical wells in this area isinjected through horizontally or obliquely placed drainage and steam needle installed below the level of the aquifer through the holes in spotboy wall waterworks using tightly coupled with her camera.

2. The method according to p. 1, characterized in that the quay track in the area of hydraulic structures vertical wells placed in a checkerboard pattern.

3. The method according to p. 1, characterized in that the needle for additional submission of steam.

4. The method according to p. 1, characterized in that the through horizontally or obliquely placed drainage and steam needle submit chemical detergent, alternating it with the supply of steam.

5. The method according to p. 3, characterized in that through the vertically mounted perforated steam needle submit chemical detergent, alternating it with the supply of steam.

6. The method according to p. 1, characterized in that after the filing of steam through horizontally or obliquely placed drainage and steam needles are compressed air.

7. The method according to p. 1, characterized in that the supply of steam through horizontally or obliquely placed drainage and steam needle alternate feed them in compressed air.

8. The method according to p. 3, characterized in that after the filing of steam through the vertically mounted perforated steam needles are compressed air.

9. The method according to p. 3, characterized in that the supply of steam through the vertically mounted perforated steam needle alternate feed them in compressed air.

10. The method according to p. 1, characterized in that after the removal of oil pumps from the vertical is a rich collection of petroleum carried out by sorption.

 

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