Method for contaminated silt and/or bottom sediment area localization and decomposition

FIELD: ground hydraulic structure erection, particularly to decontaminate silt or bottom sediments in water bodies.

SUBSTANCE: method involves building protective dam along perimeter of silt and/or bottom sediment area to be protected; laying waterproofing layer along inner dam perimeter, wherein waterproofing layer height is 2 times as much as silt and/or bottom sediment layer; forming artificial ground massif of watertight ecologically friendly natural ground in water area inside the dam, wherein artificial ground massif thickness is equal to at least three thicknesses of silt and/or bottom sediment layer; forming above-water relief area having 2.5 m height over water surface; forming surface flow discharge system and planting greenery in artificial ground massif.

EFFECT: increased reliability, reduced contamination concentration, prevention of hazardous substances ingress in ambient space and improved ecological safety.

2 cl, 1 dwg

 

The invention relates to the field of construction groundwater, hydraulic structures and can be used for disinfection of contaminated sediments and sludge water objects.

Closest to the invention is a method of localization of harmful substances in the soil, including the construction of artificial soil covering contaminated sites (see application No. 92011250 published 27.02.1995, with priority from 12.10.1992 year).

The disadvantages of the known methods is the unreliability of disinfection of contaminated silts and penetration of harmful substances from the reservoir into the environment, for example, failure prediction and/or continuity of an insulating screen, which degrades the environment.

The objective of the invention is to improve the reliability of containment and decontamination of silt and/or sediment, reducing the concentration of pollutants and improve the environment.

The problem is solved due to the fact that in the method of containment and decontamination of silt and/or sediment, including the construction of artificial soil covering contaminated sites before construction of the artificial soil mass constructing the dike along the contour of silt and/or sediment, subject isolation, internal account which the dam is placed in a waterproof on high, 2 times the layer thickness of silt and/or sediment, then in the waters inside the protective dam occiput artificial ground from environmentally friendly permeable natural soil layer thickness equal to a thickness of not less than three layers of silt and/or sediment contaminated sites, filled territory forming the surface relief, the height of which does not exceed 2.5 m above the water surface, and also creates a system of drainage of surface runoff.

In the method of containment and decontamination of contaminated sites of silt and/or sediment after the construction of the artificial soil surface can be green.

The technical result of the invention is that maintaining the integrity of the containment and decontamination of contaminated sites of silt and/or sediment, in addition, is reduced to a safe level concentration of pollutants, prevents penetration of harmful substances from the reservoir into the environment that improves the environment.

The drawing shows a water area with polluted stretch of mud.

The proposed method is as follows.

The contour of precipitation, subject isolation, slept protective dam of riprap 1. Circuit dam fit waterproofing 2 navasota, 2 times the power of the sludge. Water area within the tailings dam slept organic soil 3, presents any difference species of natural occurrence. The power of filling must not exceed the capacity of sludge not less than 3 times. On landfilling site is formed by a surface relief 4, the height of which should not exceed 2.5 m relative elevation of the water surface 5 in the reservoir. To minimize surface water infiltration constructed drainage system storm water and snowmelt runoff. On the established elevation of the soil mass planted vegetation 6. The process of disinfection occurs through the gradual removal of toxic elements from contaminated sludge and/or sediment in safe concentrations for decades. Removal of elements occurs at the expense of creating upward convective flow of the pore water and pressed, elimination (sorption) components-pollutants from water to clean the soil all the way transfer, decomposition of polluting compounds by microorganisms in the aeration zone and finally due to the absorption of the remaining pollutants vegetation.

The proposed method provides reliable disinfection of contaminated areas of silt and/or sediment. In addition, prevent the transfer of contaminants into the aquatic environment through the tavern is ical and biological processes, and reduced to a safe level concentration of pollutants in sediments and/or silts.

1. The method of containment and decontamination of contaminated sites of silt and/or sediment, including the construction of artificial soil covering contaminated sites, characterized in that before the construction of the artificial soil mass constructing the dike along the contour of silt and/or sediment, subject isolation, internal contour dam is placed in a waterproof to a height of 2 times the layer thickness of silt and/or sediment, then in the waters inside the protective dam occiput artificial ground from environmentally friendly permeable natural soil layer thickness equal to a thickness of not less than three layers of silt and/or sediment sediments contaminated sites, filled territory forming the surface relief, the height of which does not exceed 2.5 m above the water surface, and also create a system of drainage of surface runoff.

2. The method according to p. 1, characterized in that after the construction of the artificial soil mass shall greening its surface.



 

Same patents:

FIELD: offshore oil-field hydraulic structures, namely for building fixed platforms.

SUBSTANCE: method for forming support substructure by welding large blocks involves producing and serially connecting precast members to create flat units, namely panels and diaphragms; connecting flat units by tubular inserts and tubular links to create three-dimensional latticed structure. All operations are divided into four stages in accordance with technological order. The first stage includes forming tubular links and tubular inserts, pile sections and marine riser sections. The second stage includes assemblage of flat panels and diaphragms in horizontal position on corresponding mats. The third and the forth stages include simultaneous installation of flat panels and diaphragms and rigid connection thereof.

EFFECT: reduced labor inputs, time and cost for assembly work performing due to elimination of complicated tubular joints used as assembly units.

3 cl, 7 dwg

FIELD: offshore oil-field hydraulic structures, namely for building fixed platforms.

SUBSTANCE: support substructure comprises three-dimensional latticed structure having prismatic shape and composed of tubular members. The structure has vertical panels with posts, cross-pieces, struts and horizontal diaphragms connected one to another. Horizontal diaphragms have guiding nets for marine risers. The structure is secured to ground by main piles arranged in vertical posts and by foundation having additional piles, which is rigidly connected to tubular members of side edges of above structure. The structure is provided with ice-protection means formed as two truncated prisms of sheet steel and having beveled side ribs rigidly connected one to another by major bases. Marine risers are arranged inside prisms. Each prism of ice-protection means is rigidly connected with tubular members of corresponding diaphragms of three-dimensional latticed structure.

EFFECT: increased resistance to wave, seismic and ice loads, improved manufacturability and, as a result, reduced cost of permanent offshore structure building.

3 cl, 2 dwg

FIELD: hydraulic engineering, particularly underwater structures adapted for oil and gas well operation, preferably on shallow continental shelf having bottom covered with thick silt layer and in ice-covered period.

SUBSTANCE: platform comprises base, vertical pile holders connected with the base and positioning unit for drilling string and well-control equipment fixation. Base is formed as a structure with cavities filled with ballast. The structure is composed of hollow members and functionally divided into two areas. Positioning unit is arranged in the first area, another area including catching opening. Platform is additionally provided with removable mounting frame with production equipment installed on the frame. Arranged in lower frame part are inclined guiding means to provide access into catching opening during mounting frame connection with support platform base in underwater position.

EFFECT: reduced labor inputs for production equipment mounting and maintenance, increased reliability.

7 dwg

FIELD: production of ice.

SUBSTANCE: method comprises producing a hollow near the ship's side, delivering air under the ice cover, the air volume does not exceeding the volume of the space defined by ice covering from the top, water from the bottom, and ice walls from the sides over the contour of the future hollow. The walls are frozen from top to bottom by means of direct nonseparable heat exchangers mounted in advance into the covering immediately behind the contour up to the bottom of the future hollow. The delivery stops and the bottom of the future hollow is frozen with the use of L-shaped nonseparable heat exchangers set into the covering simultaneously with the direct heat exchangers. As a result, a closed space is defined, which is stripped, and ice blocks are removed.

EFFECT: enhanced efficiency.

FIELD: hydraulic engineering, particularly for forming temporary structures for enclosing closed in plane water area bottom part and space above the bottom part through the full water thickness.

SUBSTANCE: method of shallow tunnel construction involves forming structure enclosing closed in plane bottom part; removing water from the structure; performing works in dry structure and demounting above structure. Method of enclosing structure forming involves producing bottomless hydraulic enclosure with controlled floatability; transporting and moving thereof to tunnel path; immersing the enclosure in water up to reaching water area bottom by reducing floatability thereof and fixing enclosure with fastening means and anchor system; leveling upper enclosure part with horizon line and arranging cranage and platforms for building material storage on upper enclosure part; erecting cutoff walls inside space defined by enclosure; removing water from the enclosure; developing bottom ground by trench digging; constructing pile tunnel base; building foundation grill on pile tunnel base; locating composite or precast reinforced concrete tunnel sections on foundation grill; recovering initial floatability of the enclosure. Enclosure structure has movable fastening means formed as blades along vertical walls thereof.

EFFECT: increased tunnel reliability, reduced time of erection thereof.

4 cl, 4 dwg

FIELD: stationary sea oil platforms.

SUBSTANCE: block has underwater support, made in form of two-level bench, formed by vertical beam cases and horizontal links, and also has support columns, connected to support. Horizontal links of bench are made in form of floating tanks, while links, placed along perimeter of lower level of bench, are separated by water-impenetrable walls on sections, provided with ballasting means. Method for mounting support block at the bottom of continental shelf includes transporting, ballasting of floating tanks and fixing support block at the bottom of water body. Support block is transported into wells drilling zone in planned position, sections of floating tanks are ballasted until lower level of support lowers into bottom of water body for 0.3-0.7 of its height, different and slants are evened and holding beams are inserted into cases of support with their following forcing into hard bottom portion and fixing in cases. Ballasting of sections of floating tanks and forcing of holding beams can be performed in pairs in diagonal planes relatively to center of lower level of support.

EFFECT: simplified assemblage, higher reliability.

2 cl, 12 dwg

FIELD: hydraulic engineering, particularly building bases and foundations, namely bridge piers, in water.

SUBSTANCE: method involves monitoring water obstacle in support building place, including investigating water parameters, recording water level in the course of year, determining floor shape, investigating floor ground, influence of outer disturbing forces and calculating weight and dimensions of support foundation case on the base of above parameters; producing hollow case with several cavities; moving case to installation place; submerging case in water; pacing thereof on floor; fixing case by piles and smoothing floor. Case submerging and placing operations are performed simultaneously with stabilizing vertical case position by performing control and filling of corresponding cavities. Bottom smoothing process is carried out by forcing artificial material, such as concrete layers with crushed stone interlayers, under case bottom. During case placing case is secured by blades built in case bottom and by piles inserted in cavities. Correspondence between case weight, number of blades, head resistance and side friction thereof for particular ground is determined to provide case stability on ground. Upper edge of submerged case is located above maximum possible water wave height. Rock fill is formed around underwater case part.

EFFECT: reduced time of support erection, increased reliability and stability, safety and service life, reduced labor inputs, possibility to erect supports in Arctic basin.

3 cl 1 ex

The invention relates to the development of underwater mineral deposits, namely for the construction of technological systems, which provide carrying out maintenance work on the shelf of the open sea

The invention relates to the field of drilling offshore, in particular to methods of installation drilling monoatomic reason, stabilize them on the bottom and dismantling

The invention relates to the development of underwater mineral deposits, mainly of liquid and gas, the construction of technological systems that provide on the continental shelf the high seas with the ability against ice, and seismic loads

FIELD: cleaning or keeping clear the surface of open water, particularly to clean streams of oil pollution in difficult-to-access areas.

SUBSTANCE: method involves forming sump pool by damming up river bed; settling upper oil layer in the sump pool and accumulating oil in accumulation column; discharging associated water from the accumulation column through control vessel with the use of controllable valve; discharging main portion of clear subsurface water accumulated by grooved-and-tongue guiding means through bottom window and surface level regulation gate. Device for above method implementation comprises dam and accumulation column. The dam is formed of grooved-and-tongue guiding means having double walls in river bed cross-section. The grooved-and-tongue guiding means converge towards the accumulation column to create the sump pool. Rear wall of the grooved-and-tongue guiding means is provided with surface gate, the front wall thereof has bottom window. Oil receiver is installed upstream the accumulation column.

EFFECT: possibility to gather oil from water surface without oil mixing with main water flow.

4 cl, 3 dwg

FIELD: hydraulic equipment, particularly to clean channels of silt.

SUBSTANCE: method involves cutting down unnecessary trees, bushes and weed vegetation along irrigation channel berms and slopes; removing the cut down trees, bushes and weed vegetation; treating stubs of the trees and bushes and stubble remaining after weed vegetation removing. The stubs and stubble treatment is performed after hydraulic cut down trees, bushes and weed vegetation washing down to channel bottom. The stubs and stubble are trimmed for maximal possible height, the grinded fraction, silt, mineral and other waste is washed down to channel bottom. Water level in the channel is raised for height equal to 1/4-1/3 of channel depth and then decreased. Coarse fractions are removed from blocking grid surface. Fine fractions are trapped by meshed networks.

EFFECT: reduced power and labor inputs for channel cleaning and increased channel throughput.

5 dwg

FIELD: cleaning or keeping clear the surface of open water, particularly emergency timber collection in large water pools.

SUBSTANCE: timber retention boom comprises a number of sections serially connected one to another and to waterside supports. Each section comprises two cylindrical pontoons rigidly secured one to another by bridges and frame. The frame extends at 30° to longitudinal pontoon axes. The pontoons are offset a distance equal to one-forth of pontoon body length one relative another. Timber retention boom also has hydraulic flow formers associated with hydraulic system. The sections are attached one to another by hinge connections.

EFFECT: extended range of technological capabilities.

3 dwg

FIELD: hydraulic building, particularly to built hydraulic structures on sea and river bottoms and to localize sources of chemical, radioactive or other substances, namely sunk crafts or other damaged underwater objects.

SUBSTANCE: device comprises entrapping dome, shaft wells, floating members and anchoring ballast. The entrapping dome is formed of piece of thin-walled flexible material. Upper ends of shaft well cores are provided with hatch covers, vertically arranged immediately over water surface and are supported by floating members. Telemetric control equipment is located in confined space which encloses damaged underwater object. Telemetric control equipment has transmitting antenna leaded out to water surface near the hatch cover.

EFFECT: increased reliability of damaged object localization and polluting substance concentration control, possibility to transfer above substances to standby vessels for following reclaiming.

1 dwg

FIELD: environment protection, particularly to gather oil and oil products spread over water surface as a result of pipeline or tanker damage or well drilling, from water surface.

SUBSTANCE: method involves localizing the oil pollution by installing at least one boom consisted of at least one section composed of elastic water-tight shells connected one to another in longitudinal direction; gathering and pumping-out oil product. After boom installation two elastic water-tight shells form two chambers, namely upper and lower ones. Air is injected in upper chamber, lower chamber is filled with water. Oil product is gathered from water surface and is injected into lower chamber so that lower chamber water is displaced with oil product.

EFFECT: increased efficiency and quickness of water pool cleaning.

2 dwg

FIELD: cleaning or keeping clear the surface of open water, particularly emergency timber collection in large water pools.

SUBSTANCE: boom is connected to bottom and waterside supports by load-bearing cables and comprises serially connected sections. Each section includes cylindrical pontoon with shaft and disconnectable ratchet gears installed at pontoon shaft ends. The sections are also provided with pivotally connected hydraulic cylinders and side cross-bars adapted to connect the sections to power-generating plant. Central boom part comprises insert provided with releasable connectors to permit ship passage.

EFFECT: extended range of technological capabilities.

4 dwg

FIELD: shipbuilding; ice-breaking submarine vessels cleaning water basins from ice cover.

SUBSTANCE: proposed device includes submarine vessel exciting resonance flexural gravitational waves while running under ice at resonance speed. Upper deck of ship may be deformed to state of mirror image of flexural gravitational waves excited by ship by means of drives mounted under it and actuated by ultrasonic sensors which are mounted on deck for measuring the vertical distance between upper deck and lower surface of ice cover.

EFFECT: enhanced efficiency of ice breaking.

1 dwg

FIELD: environment protection, particularly to clean water surface of oil products.

SUBSTANCE: method involves thickening oil product layer on water surface by changing shape of oil spot confined by oil boom in horizontal plane. Device for above method realization includes boom, docking unit adapted to connect boom ends for closed boom contour creation, tightening means and submersed pumps. The device is also provided with disposable boom protective cases and with folding means. The folding means is made as drum having axis of rotation extending obliquely to water surface and rotary actuator. The folding means provides simultaneous drawing together and winding of two opposite boom parts.

EFFECT: increased efficiency of water surface cleaning of oil products and improved service performance.

2 cl, 3 dwg

FIELD: devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials.

SUBSTANCE: device or system comprises elongated channel with walls defined by two beveled faces diverging one from another from narrow inner end to widened mouth. The channel is towed, for instance by one or several ships. The device is made of flexible materials and has wedge-like channel section between two wall defining faces, wedge-like structure, gathering means and separator. Part of wedge-like channel, wedge-like structure and separator are arranged one after another as two connected or integrated modules to form solid frame structure comprising above-water board and longitudinal towing means installed so that the towing means are secured to modules. The towing means and towing force crosses at rear wedge-like structure part as viewed in towing direction.

EFFECT: increased device movement speed and increased efficiency of oil pollution gathering.

9 cl, 5 dwg

Blasting supply // 2265793

FIELD: shaped-charge action on solid media, in particular, ice masses and emergency objects with the aim of their destruction, applicable for destruction of ice jams, elimination of avalanche-like and mud flow situations, liquidation of aftereffects of natural and technogeneous cataclysms, fires, as well as at production of fire-fighting water reservoirs.

SUBSTANCE: blasting supply has a cover, frame closed by a cover and made in the form of a latticework, propelled substance, explosive placed in the cover, the cover has two layers, pulled up on the latticed frame expansible upwards made of ribs converging in the lower part, the propelled substance is placed between two layers of the cover, an antioverturning is attached to the cover from the top.

EFFECT: enhanced efficiency of the blasting effect on the objects to be destructed.

22 cl, 1 dwg, 6 ex

FIELD: cleaning or keeping clear the surface of open water, particularly to clean streams of oil pollution in difficult-to-access areas.

SUBSTANCE: method involves forming sump pool by damming up river bed; settling upper oil layer in the sump pool and accumulating oil in accumulation column; discharging associated water from the accumulation column through control vessel with the use of controllable valve; discharging main portion of clear subsurface water accumulated by grooved-and-tongue guiding means through bottom window and surface level regulation gate. Device for above method implementation comprises dam and accumulation column. The dam is formed of grooved-and-tongue guiding means having double walls in river bed cross-section. The grooved-and-tongue guiding means converge towards the accumulation column to create the sump pool. Rear wall of the grooved-and-tongue guiding means is provided with surface gate, the front wall thereof has bottom window. Oil receiver is installed upstream the accumulation column.

EFFECT: possibility to gather oil from water surface without oil mixing with main water flow.

4 cl, 3 dwg

Up!