JP2000001842A - Offshore effluence treatment system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an offshore effluence treatment system capable of facilitating the collection and treatment of the effluence such as petroleum, etc., outflowing offshore in the case loading and unloading is made for a ship without using any effluence treatment exclusive ship irrespective of calm and stormy weather on the sea. SOLUTION: A nozzle hole attached pipe line for forming an air curtain 20 so as to surround a ship moored along a mooring levee body 9 is laid on the bottom of the sea. A rising and falling oil fence 5 is provided to the outside thereof, and offshore effluence 21 is collected in a retarding chamber 11 with a slit 10 by a pump loaded piping 14 and is moved to a treated treatment chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prevents the spread of marine spills such as petroleum, food oil, chemicals, etc. spilled onto the sea, and mixtures thereof with water and the like, and prevents the accumulation, collection and recovery of spills. The present invention relates to a marine effluent treatment system that enables smooth treatment.

[0002]

2. Description of the Related Art When unloading a cargo of petroleum, food oil, chemicals, etc. from a marine vessel, the cargo spilled to the sea is surrounded by a previously installed oil fence or the like, and its diffusion and spillage are prevented. Prevention measures have been adopted as a common marine effluent measure.

[0003]

In the conventional marine effluent countermeasures using oil booms, the spills are collected, recovered and treated only by preventing the spills from being surrounded by the oil fences and flowing out. Requires a dedicated processing vessel.

[0004] In addition, in stormy weather, the work of collecting, recovering and treating effluents becomes extremely difficult due to waves and winds, and marine effluents are diffused by high waves to cause environmental pollution. There is.

Accordingly, the present invention provides a method for recovering and treating an effluent that has flown out to the sea during the loading and unloading of a ship, the tranquility of weather and sea conditions,
An object of the present invention is to provide a marine effluent treatment system that can be easily performed regardless of stormy weather and without using a dedicated effluent treatment ship.

[0006]

In order to solve the above-mentioned problems, a marine effluent treatment system of the present invention cooperates with a mooring dike and a ship moored along the dike with the dike. A pipeline with nozzle holes for air curtain formation laid on the sea floor so that it can be surrounded by an air curtain, a compressed air supply source that can supply compressed air to the pipeline, and a sea floor that surrounds the pipeline from the outside And an effluent treatment facility for collecting and treating marine effluents from the ship is provided.

Further, in the marine effluent treatment system of the present invention, a water retarding chamber is provided inside the embankment, and a water surface of the water retarding chamber is provided on a mooring side wall of the embankment with a draft surface of the ship. A slit for communication is formed, and a pipe with a pump for sucking a marine effluent flowing into the inside of the water retarding chamber through the slit by a pump and supplying the effluent to the effluent treatment facility is provided.

Further, the marine effluent treatment system of the present invention is characterized in that the embankment is configured as a floating body and is moored on the sea floor.

In the above-mentioned marine effluent treatment system of the present invention, when a ship moored along the levee body unloads a load of oil or the like from the ship, a part of the load is partially connected to a cargo handling pipe joint or the like. When the water spills from the sea surface to the sea surface, the air is simultaneously blown up from the nozzle holes of the pipeline on the sea floor connected to the compressed air supply source so as to surround the marine effluent with an air curtain.

[0010] The floating oil fence surrounding the pipeline from outside is also raised by the floating operation, so that the marine effluent around the ship during loading and unloading is reduced by the mooring dam, the air curtain and the oil fence. Surrounded by a double barrier consisting of

Since the marine effluent is immediately collected and processed by the effluent treatment facility, the outflow and diffusion of the marine effluent to the outside can be sufficiently prevented, and the marine effluent can be safely protected even in stormy weather. Cargo handling work is performed.

A pump is provided inside the embankment for sucking out marine effluent flowing into the immersion chamber through a slit in a wall of the embankment and feeding the effluent treatment facility. When the pipes are attached, the marine effluent can be continuously collected without disturbing the unloading work from the vessels moored along the bank.

The embankment may be constructed fixedly on the sea floor or may be constructed as a floating body and moored on the sea floor, so that the embankment can be moved as required.

[0014] The marine effluent treatment system of the present invention is further characterized in that a work floor is provided on the mooring levee body, through which an emergency vehicle can pass and an emergency operation can be performed. Processing at the time can be performed efficiently and safely.

[0015] The marine effluent treatment system of the present invention further comprises:
The interior space of the mooring levee is characterized by having a storage room that can store materials including oil absorption mats and neutralizers, which enables quick countermeasures in the event of an oil spill. This makes it possible to efficiently and quickly carry out accident handling.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a horizontal sectional view showing a marine effluent treatment system according to a first embodiment of the present invention (FIG. 2).
2 is an enlarged cross-sectional view taken along the line AA of FIG. 1, FIG. 3 is a cross-sectional view showing an air curtain formation state corresponding to FIG. 2, and FIG. It is a transverse cross-sectional view showing the oil fence floating state and the effluent suction state correspondingly,
FIG. 5 is a horizontal sectional view showing a marine effluent treatment system as a second embodiment of the present invention, FIG. 6 is a horizontal sectional view showing a marine effluent treatment system as a third embodiment of the present invention, and FIG. 6 The operation status of the offshore effluent treatment system is CC
It is an expanded cross-sectional view shown by the arrow cross section.

First, a marine effluent treatment system according to a first embodiment of the present invention will be described. As shown in FIGS. 1 and 2, ships 18 along a mooring dike 9 near a revetment 19 at a port. Is moored for cargo handling, and a diversion chamber 11 is formed inside the bank body 9.

[0018] The wall of the mooring side of the embankment 9 is provided with a retarding room.
Numerous slits connecting the water surface of 11 with the draft surface of ship 18
10 are formed, whereby the bank body 9 is provided with a wave breaking function.

A structure having a filling member 12 is connected to the back of the embankment 9, and the upright breakwater-type embankment structure 26 constructed in this manner includes the embankment structure 26 and the revetment 19 Along with the gravity-type embankment 15 connecting to the ground, it is erected on the ground of the seabed 24 via a rubble mound 22. And rubble mound 22
A scouring prevention covering stone 23 is provided at the front edge of.

The mooring dike 9 has a fender 9a.
Is mounted, so that buffering at the time of contact with the ship 18 is achieved.

In this embodiment, the pipeline 1 with the nozzle holes for forming the air curtain is provided with the sea floor 24 so that the ship 18 can be surrounded by the air curtain (see reference numeral 20 in FIG. 3) in cooperation with the embankment body 9. Are laid on a number of fixed foundations 2, and one end of the pipeline 1 is connected via a connecting pipe 3 to a compressed air source 4 installed on a bank 26, and the other end is closed.

Further, a floating / sinking type oil fence 5 mounted on a fixed foundation 6 of the sea floor 24 via a connecting member 7 is provided so as to surround the pipeline 1 from the outside, and an air passage 25 of the oil fence 5 is provided. By supplying air from the compressed air source 4 through the connection pipe 8, the oil fence 5 is caused to float and expand.

Further, the effluent from the vessel 18 surrounded by the above-mentioned air curtain 20 and the oil fence 5 is taken into the water-reducing chamber 11 through the slit 10 of the embankment 9 and sucked by the effluent collection pipe 14. However, the pipe 14 is connected to a pump (not shown) in a pump chamber 16 inside the embankment body 15. The marine effluent sucked by the pump through the pipe 14 is decomposed by effluent processing equipment (plant equipment) in a processing chamber 17 inside the bank body 15.

In addition, a work floor 9f is provided on the mooring levee body 9 so that an emergency vehicle can pass therethrough and work in an emergency can be performed. A storage room 9s for a material containing an agent is provided.

In the above-described offshore effluent treatment system of the first embodiment, when a cargo 18 such as oil is unloaded from a ship 18 moored along the embankment 9, a part of the cargo is transferred to the cargo handling pipe. When the water spills from a joint or the like onto the sea surface, as shown in FIG. 3, the seawater effluent 21 is surrounded by an air curtain 20 from each nozzle hole of the seabed pipeline 1 connected to the compressed air supply source 4. The action of blowing up air is performed all at once.

The floating oil fence 5 surrounding the pipeline 1 from the outside also rises as shown in FIG.
Is surrounded by the embankment 9 and the double barrier composed of the air curtain 20 and the oil fence 5.

Since the marine effluent 21 is immediately collected and processed by the effluent treatment facility, the outflow and diffusion of the marine effluent 21 to the outside can be sufficiently prevented.

That is, a water retarding chamber 11 is provided inside the embankment body 9, and the marine effluent 21 flowing into the water retarding chamber 11 through a number of slits 10 in the wall of the embankment body 9 is suctioned to treat the effluent. Since the piping 14 with a pump for feeding to the facility is provided, the marine effluent can be continuously collected without disturbing the unloading work from the ship 18 moored along the bank 9. Become like

Further, since the working floor 9f and the storage room 9s are provided, it is possible to quickly take countermeasures in the event of a spill of petroleum or the like, and to efficiently and promptly carry out the accident processing.

Next, a marine effluent treatment system as a second embodiment of the present invention shown in FIG. 5 will be described. In the second embodiment, the mooring levee body 9 and the gravity type levee body 15 are paired to the left and right. A common pipeline 1 with a nozzle hole for forming an air curtain and an oil fence 5 are provided. In FIG. 5, the same reference numerals as those in FIG. 1 indicate the same members.

In the second embodiment, cargo handling work can be performed simultaneously with the two ships 18 and 18 moored, and the ship is operated by the air curtain from the pipeline 1 having the common nozzle hole or the floating / sinking oil fence 5. There is an advantage that the marine effluent from 18 can be surrounded and collected, but other functions and effects are the same as those of the first embodiment.

Next, a third embodiment of the present invention shown in FIGS. 6 and 7 will be described. In the marine effluent treatment system of this embodiment, the mooring levee body 9 and the gravity type levee body 15 of the first embodiment described above are used. Instead, a mooring levee body 9A and a floating breakwater body 29 are provided as floating bodies, respectively.
Is moored by a mooring line 30 to a fixed sinker 31.

The buoyancy of the mooring levee 9A is obtained by a buoyancy chamber 28 integral with the levee 9A. A breakwater body 27 is configured.

In FIGS. 6 and 7, the same reference numerals as those in FIGS. 1 and 2 denote the same members. In the third embodiment, the same operation and effects as those of the first embodiment can be obtained. Since the levee body 9A and the floating breakwater body 29 are configured as a floating body, an effect is obtained in which the levee bodies 9A and 29 can be moved as necessary. Reference numeral 32 in FIG. 6 indicates a mooring column foundation.

In each of the above-described embodiments of the present invention, a large amount of air is supplied even when the oil flows out during rough weather when the oil fence 5 cannot be expanded or when the oil fence 5 does not expand due to some abnormality. By doing so, the air curtain 20 is formed, and there is an effect that oil diffusion can be prevented.

Further, when the air curtain 20 is formed, horizontal movement is given to the sea surface, and there is an effect that the effluent can be easily sent to the retarding chamber 11.

Further, by generating a horizontal flow stronger than the water-reducing chamber 11 by a pump or the like, a surface flow along the air curtain 20 and the oil fence 5 is generated. Can be done

[0038]

As described above, according to the marine effluent treatment system of the present invention, the following effects can be obtained. (1) The sea effluent around the ship during cargo handling will be surrounded by mooring dikes and double barriers consisting of air curtains and oil fences. Since the marine effluent is immediately collected and processed by the effluent treatment facility, the outflow and diffusion of the marine effluent to the outside can be sufficiently prevented, and cargo handling work can be performed safely even in stormy weather. Will be able to (2) A basin provided with a dewatering chamber inside the levee body, and a pipe with a pump for sucking marine effluent flowing into the dewatering chamber through a slit in a wall portion of the levee body and feeding the effluent to the effluent treatment facility. , Marine effluents can be continuously collected without disturbing unloading work from ships moored along the bank. (3) In addition to the embankment fixedly constructed on the sea floor,
It may be configured as a floating body and moored on the sea floor,
This makes it possible to move the embankment as needed. (4) If a work floor is provided on the mooring pier that allows emergency vehicles to pass and work in an emergency, emergency processing can be performed efficiently and safely. (5) If a storage room capable of storing materials including oil absorption mats and neutralizers is provided in the interior space of the mooring levee, quick measures should be taken in the event of a spill of petroleum, etc. It is possible to efficiently and promptly carry out accident handling. (6) In the event of stormy weather where the oil fence cannot be deployed, or when the oil fence does not deploy due to some abnormality, even if oil flows out, an air curtain is formed by supplying a large amount of air, and the oil curtain is formed. Has the effect of preventing the diffusion of (7) There is an effect that horizontal movement is given to the sea surface at the time of forming the air curtain, and the effluent can be easily sent to the retarding chamber. (8) By generating a horizontal flow stronger than the water chamber by a pump or the like, a surface flow along the air curtain and the oil fence is generated. Can be.

[Brief description of the drawings]

FIG. 1 is a horizontal sectional view of a marine effluent treatment system according to a first embodiment of the present invention (a BB view in FIG. 2).

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is a cross-sectional view showing an operation state of the offshore effluent treatment system of FIGS.

FIG. 4 is a cross-sectional view showing another operation state of the offshore effluent treatment system of FIGS.

FIG. 5 is a horizontal sectional view showing a marine effluent treatment system as a second embodiment of the present invention.

FIG. 6 is a horizontal sectional view showing a marine effluent treatment system as a third embodiment of the present invention.

FIG. 7 shows the operation state of the offshore effluent treatment system of FIG.
It is an expanded cross-sectional view shown by the -C arrow cross section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipeline with nozzle hole 2 Fixed foundation 3 Connecting pipe 4 Compressed air source 5 Floating and sinking oil fence 6 Fixed foundation 7 Connection member 8 Connection pipe 9, 9A Mooring levee 9a Fender 9f Work floor 9s Storage room 10 Slit room 11 12 Filling material 13 Suction port 14 Outlet collection pipe 15 Gravity type embankment 16 Pump room 17 Treatment room 18 Vessel 19 Seawall 20 Air curtain 21 Marine effluent 22 Ripstone mound 23 Scour prevention covering stone 24 Ocean floor 25 Air passage 26 Upright breakwater type breakwater structure 27 Breakwater type breakwater body 28 Buoyancy room 29 Floating breakwater body 30 Mooring line 31 Fixed sinker 32 Mooring column foundation

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hiromasa Ito 12 Nishiki-cho, Naka-ku, Yokohama-shi Inside Mitsubishi Heavy Industries, Ltd.Yokohama Mfg. Co., Ltd. (72) Inventor Takka Waki 1-29-4 Tsurugamine, Asahi-ku, Yokohama, Kanagawa Prefecture Inside World Engineering Co., Ltd. (72) Inventor Masami Orikasa 1-2-29-4, Tsurugamine, Asahi-ku, Yokohama, Kanagawa F-term in Ludo Engineering Co., Ltd. (reference) 2D025 AA01 BA32 BA35

Claims (5)

[Claims] 1. A mooring levee body and a pipeline with a nozzle hole for forming an air curtain laid on the seabed so that a ship moored along the levee body can be surrounded by an air curtain in cooperation with the levee body. And a compressed air supply source capable of supplying compressed air to the pipeline, and a floating / sinking type oil fence disposed on the seabed so as to surround the pipeline from the outside. An offshore effluent treatment system, comprising an effluent treatment facility for collection and treatment. 2. The marine effluent treatment system according to claim 1, wherein a water retarding chamber is provided inside the embankment, and a water surface of the water retarding chamber is provided on a mooring side wall of the embankment. A number of slits communicating with the draft surface are formed,
A marine effluent treatment system, wherein a pumped pipe for sucking a marine effluent flowing into the inside of the water-reducing chamber through the slit and feeding the effluent to the effluent treatment facility is provided. 3. The offshore effluent treatment system according to claim 1, wherein the embankment body is configured as a floating body and is moored to the seabed. 4. The marine effluent treatment system according to any one of claims 1 to 3, wherein:
A marine effluent treatment system, comprising: a work floor on which an emergency vehicle can pass and an emergency operation can be performed. 5. The marine effluent treatment system according to claim 1, wherein a material containing an oil-absorbing mat and a neutralizing agent can be stored in an internal space of the mooring levee. A marine effluent treatment system, comprising a storage room.