KR20060119351A - The seabed soil improvement method - Google Patents

Abstract

A method for supplying oxygen and chemicals into underwater contaminated sediments is provided to restore habitation environment of marine organisms to its original state by supplying seawater with abundant oxygen and chemicals for soil improvement into seabed soil, destructing a sticky layer of the seabed soil, degrading organic materials and forming pores between mud flats and sand particles. A method for supplying oxygen and chemicals into underwater contaminated sediments comprises: fixing a sliding plate(3) and a hauling bar(2) to be hauled by a ship to a heavy weight(1); connecting a pressurization tank(5) to an upper portion of the heavy weight by a communication pipe(501) in the state that a high pressurized water distribution pipe(4) and a high pressurized water inflow pipe(6) are fixed to the pressurization tank; and forming an injection pipe(7) comprising a vane(7A), lateral injection holes(701) and longitudinal injection holes(702) on a lower part of the high pressurized water distribution pipe so as to improve contaminated sediments by injecting high pressurized water and soil improving chemicals into the seabed through the lateral injection holes and the longitudinal injection holes of the injection pipe while moving the injection pipe in the state that the injection pipe is stuck below the bottom of the seabed.

Description

Oxygen and sediment supply method of sewage fouling sediment layer {THE SEABED SOIL IMPROVEMENT METHOD}

Figure 1 is a cross-sectional view of the feeder used in the present invention

(Explanation of symbols for the main parts of the drawing)

1 Weight 6 High Pressure Water Inlet Pipe

2 towing rod 7 injection pipe

3 sliding plate 701 horizontal injection hole

4 High pressure water distribution pipe 702 Longitudinal injection hole

5 pressure cylinder 7A wing

501 High Pressure Water Inlet Pipe

The present invention is contaminated by spraying contaminated sediments, such as sand and sewage of contaminated lakes or seabeds, with a high pressure water and a soil improvement medicament through a spray pipe located at a depth of 25 cm to 100 cm below the topsoil. The present invention relates to a method for supplying oxygen and pharmaceuticals in sewage-contaminated sediments to improve the efficiency of improving lakes and seabed soils.

In general, polluted sediments in lakes and seabeds are mostly deposited within about 25 cm to 100 cm of the topsoil, and there are poor oxygen and inanimate areas, and they are also a source of red tide. In some places, living organisms cannot be inhabited, and the area where the pH decreases due to the generation of organic acids caused by organic substances such as phosphorus, nitrogen, and hydrogen sulfide is rapidly expanding.

Conventionally, the contaminated soil of a lake or seabed is improved by vertically spraying a fishing net or high-pressure water. However, in the case of a fishing net, the efficiency of improving the seabed soil quality is not good because it is only passing through the topsoil of the seabed. The method of spraying high-pressure water from the tops of the seabeds causes large amounts of water to be scattered to the upper part of the seabed and spread widely by algae and currents, causing damage to the waters and nearby fisheries and farms. There was a fear that this would spread widely.

In addition, there are also methods of towing by fixing a number of knife plates on the support, but this was not enough to turn over evenly, so that the soil improvement efficiency was not enough to cut only the cuts, as well as there was a problem that many sea creatures are cut or damaged by the knife plate.

In order to solve the above problems, the present invention has a spray pipe 7 formed with a lateral injection hole 701 and a longitudinal injection hole 702 in a lower depth of 25 cm to 100 cm. Oxygen-rich seawater and soil improvement agents are supplied to the seabed at the same time, it destroys the sticky mucosa layer of the seabed soil, decomposes organic matters, and forms pores between the sand and sand particles to facilitate elution and deposition of seawater. The purpose of this is to provide a method for supplying oxygen and pharmaceuticals in sewage deposits that can restore the habitat of marine organisms.

Hereinafter, the present invention will be described in detail.

1 is a cross-sectional view of a feeding device used in the present invention.

Tow body 2 to secure the towing section (2) and the sliding plate (3) for towing to the ship, and fixed in the upper pressure cylinder (5) fixing the high pressure water distribution pipe (4) and high pressure water inlet pipe (6) It is connected to the communication pipe 501, and below the high pressure water distribution pipe 4, the injection pipe 7 formed with the wing 7A, the horizontal injection hole 701, and the vertical injection hole 702 is formed, 7) by spraying the high pressure water and soil improvement chemicals into the horizontal injection hole 701 and the vertical injection hole 702 of the injection pipe 7 while moving under the bottom of the drooping water to improve the contaminated sediment. It is characterized by that.

Reference numeral 8 is a high-pressure water and drug supply pipe

              9 is a towing rope.

The present invention as described above is connected to the pump and the high-pressure water supply pipe (8) is drawn to the ship as the seawater and drugs in the pressurized pipe (5) introduced through the high-pressure water supply pipe (8) and high-pressure water inlet pipe (6) The seawater introduced into the high pressure water distribution pipe 4 through the 501 and introduced into the high pressure water distribution pipe 4 is sprayed into the horizontal projection hole 701 and the vertical injection hole 702 of the fountain pipe 7. The spray pipe 7 is easily lowered into sand or sand by the spray water and the weight of the weight body 1 sprayed from the vertical spray hole 702 sprayed downward, and the spray pipe 7 is sand If all the way down into the 뻘 is prevented from being lowered further by the sliding plate (3) and the advance is made smoothly by the slider of the sliding plate (3).

As shown in FIG. 1, the injection pipe 7 is separated into individual particles by the injection water sprayed from the transverse hole 701 and the longitudinal injection hole 702 in a state where the injection pipe 7 is completely lowered into sand or sand. The movement resistance of the injection pipe 7 is reduced to facilitate the movement of the equipment, and at the same time, the dissolution of oxygen and the soil improvement agent is made very good by the vortex action of the rear wing 7A. (7) is buried in the tank and high pressure water and medicine are sprayed to prevent the pump from rising upward. The wings 7A serve to straighten the movement posture when moving forward, so that the aircraft moves forward in a very good position without shaking from side to side. The height of the contaminated deposit is generally 25 cm to 100 cm, and it is preferable to use a spray pipe 7 suitable for the height of the contaminated deposit.

The present invention as described above is formed below the high-pressure water distribution pipe (4) and the horizontal injection hole 701 and the vertical injection hole 702 is fixed to the injection pipe (7) fixing the blade (7A) to the above injection pipe (7) ) By improving the soil quality by lowering the sand into the sand or the sand while moving the seawater and the medicine while high pressure spraying, the contaminated sediment is mixed with the high pressure water and the medicine and the oxygen dissolution efficiency becomes very good. In addition to improving the efficiency of the improvement, it is possible to prevent scattering and diffusion of water and contaminated sediments and to reduce the soil improvement cost, compared to the conventional method of spraying high pressure water from the upper surface of the seabed. There is an effect to improve the discussion.

Claims (1)

Tow body 2 to secure the towing section (2) and the sliding plate (3) for towing to the ship, and fixed in the upper pressure cylinder (5) fixing the high pressure water distribution pipe (4) and high pressure water inlet pipe (6) It is connected to the communication pipe 501, and below the high pressure water distribution pipe 4, the injection pipe 7 formed with the wing 7A, the horizontal injection hole 701, and the vertical injection hole 702 is formed, 7) by spraying the high pressure water and soil improvement chemicals into the horizontal injection hole 701 and the vertical injection hole 702 of the injection pipe 7 while moving under the bottom of the drooping water to improve the contaminated sediment. Oxygen and medicament supply method of sewage fouling deposition, characterized in that it is to make.

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