JP2008174154A - Marine vessel provided with storage tank for waste water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a marine vessel capable of performing efficient arrangement in the marine vessel by utilizing a void space of a double outer plate structure of a fuel oil tank as a storage tank of waste water containing at least one of general life waste water and treatment water of sanitary sewage. <P>SOLUTION: In the marine vessel 1 having the double outer plate structure provided as a collision shock-absorbing structure at an outer side of the fuel oil tank 3, the storage tank 8 is provided in a space part 6 at an outer side of the fuel oil tank 3 formed by the double outer plate structure, and a pipe 9a for leading the waste water containing at least one of the general life waste water and the treatment water of the sanitary sewage is connected to the storage tank 8. A pipe 9b for discharging the waste water in the storage tank 8 from a gunwale side to the outside of the vessel is arranged so as to be provided with an overboard discharge valve 10, and the storage tank 8 is made to a storage tank for waste water for storing the waste water. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a ship provided with a drainage storage tank for storing wastewater containing at least one of general domestic wastewater or sewage treated water discharged from a residential area of the ship.

  In conventional ships, the treatment of sewage (black water) is subject to regulation under the Convention on the Prevention of Marine Pollution, and a drainage facility including a sewage treatment device corresponding to the treatment is provided and discharged after appropriate water treatment. (For example, refer to Patent Document 1).

  In this sewage treatment, sewage and sewage (including washing water) from each toilet or urinal in the residential area are led to a sewage treatment device installed in the engine room through a pipe, and after sewage treatment, from the heel side to the outside Released. This sewage treatment apparatus needs to be an apparatus that satisfies international standards when the wastewater after sewage treatment is dumped into the ocean.

  There are various types of sewage treatment apparatuses, and one of them is an activated sludge treatment apparatus having a receiving chamber, a warm air chamber, a sedimentation chamber, a sterilization chamber, and the like. The warm air chamber is equipped with a warm air blower to decompose sewage and filth, and the sterilization chamber is equipped with a discharge pump for discharge. In addition, the external discharge part of the piping is equipped with an outboard discharge valve approved by an authorized organization such as the classification society. After treating sewage and filth with this sewage treatment device, etc., it is discharged out of the ship.

  On the other hand, general domestic wastewater (gray water) such as laundry drainage, bathroom drainage, toilet drainage, and kitchen drainage excluding sewage is not regulated by the Convention on the Prevention of Marine Pollution, except in some areas. No special water treatment has been carried out on these ships. Therefore, as shown in FIG. 4, the general domestic wastewater such as the wash basin 11 and the sink 12 in the residential area is led directly into the engine room 2 through the piping 9 for each system, and then directly outboard from the left and right sides. Had been discharged.

  However, there are restrictions on the discharge of general domestic wastewater and wastewater treated by sewage treatment equipment at specific ports, etc., and it is prohibited to discharge directly outside the ship in coastal areas and polar areas. In order to meet these emission regulations, it has been proposed to provide a wastewater treatment device for general domestic wastewater in the hull (see, for example, Patent Document 2).

  In addition, general domestic wastewater is stored while the ship is in the restricted area, and discharged after the ship goes out of the restricted area. For this temporary storage, a storage tank for general domestic wastewater has been provided. However, in a conventional ship, this general domestic wastewater storage tank has an independent storage tank in the engine room. It is arranged in the engine room by arranging or using a part of the hull in the engine room as a part of the storage tank. In other words, the washbasin and sink piping in the residential area are led into the engine room for each system, and once collected and stored in a dedicated independent storage tank located on either side of the left and right, the ship regulates It discharges when it goes out of the area. In this case, a water treatment apparatus as in the case of wastewater treatment is not provided.

  However, since the amount of wastewater including general domestic wastewater and wastewater treated water in this general domestic wastewater is larger than the amount of sewage / sewage, these wastewater storage tanks have a tank capacity compared to the sewage tank. However, there is a problem that the effective arrangement of each device in the hull is impaired and it is difficult to secure the place in the engine area.

  In other words, with the development of wastewater regulations, wastewater storage tanks including general domestic wastewater and general domestic wastewater including sewage treated water have recently become necessary. If it is provided in the area, the tank volume is large, so that the space in the engine area is reduced accordingly, and the layout in the engine area becomes difficult.

On the other hand, the new regulations of the International Maritime Organization (IMO) require a stronger protection measure for the fuel oil tank. It has been required to provide a space (a space) between the outer plate and the outer plate.
Japanese Patent Laid-Open No. 07-117787 JP 2006-255513 A

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a ship having a double outer plate structure provided for collision buffering outside the fuel oil tank. Utilize the space part of the double skin structure as a place for storing wastewater storage tanks that contain at least one of general domestic wastewater or sewage treated water, and efficiently arrange each device of the ship in the engine area An object of the present invention is to provide a ship equipped with a storage tank for drainage that can be used.

  In order to achieve the above object, a ship equipped with a drainage storage tank according to the present invention is a ship having a double skin structure provided for collision buffering outside a fuel oil tank. A storage tank is provided in a space outside the fuel oil tank to be formed, and a pipe for guiding drainage including at least one of general domestic wastewater or treated water is connected to the storage tank, and the drainage in the storage tank A pipe for discharging the water from the shore side to the outside of the ship is provided with an outboard discharge valve, and the storage tank is configured as a drainage storage tank for storing the drainage. According to this configuration, the space portion of the double outer plate structure of the fuel oil tank can be effectively used, and the arrangement space in the engine room can be effectively used because it is not necessary to consider the arrangement of the drain storage tank.

  Moreover, in the ship provided with said drainage storage tank, when the said storage tank is arrange | positioned above a full load water line, since gravity drainage will be attained, it will become unnecessary to use the discharge pump. Or in the ship provided with said storage tank for drainage, if the said storage tank is arrange | positioned below a full load draft line, although the discharge pump will be needed, supply of the waste_water | drain to a storage tank will become easy.

  Furthermore, in a ship equipped with the above-described drainage storage tank, when a sewage storage tank for storing sewage before sewage treatment is provided in the outer space of the fuel oil tank formed by the double outer plate structure, The arrangement space in the engine room for the sewage storage tank can be used more effectively.

  According to the ship provided with the drainage storage tank of the present invention, the space portion of the double outer plate structure of the fuel oil tank can be used effectively, and the arrangement space in the engine room does not need to consider the arrangement of the drainage storage tank. More effective use. Further, according to this arrangement, the drainage storage tank is arranged in a state close to both the living area (residential area) and the ship side skin, so that the piping can be shortened. Furthermore, by devising the structure of the storage tank for drainage, it is possible to play a role of shock mitigation at the time of collision.

  Embodiments of a ship provided with a storage tank for drainage according to the present invention will be described below with reference to the drawings. As shown in FIG. 1 and FIG. 2, this ship 1 has an engine zone 2 at the stern, fuel oil tanks 3 are provided on both sides thereof, and the outer side has a double skin structure. An inner wall 5 of the double outer plate structure is provided as a partition of the fuel oil tank 3 inside the outer plate 4 serving as an outer wall of the double outer plate structure. It is formed.

  In the present invention, in a part of the space portions 6 and 7 and at a portion corresponding to the third deck (3rd deck) 26, at least one of treated water of general domestic wastewater (Gray Water) or sewage (black Water) is provided. A drainage storage tank 8 is provided for drainage including water. In this drainage storage tank 8, an independent storage tank may be arranged in the spaces 6 and 7, but usually, a partition 8 is provided by partitioning a part of the spaces 6 and 7 with a wall, This section 8 is used as a storage tank. In this way, the wall surface of the drainage storage tank 8 can also be used as the outer plate 4 and the partition wall 5, so that the weight of the steel material can be reduced.

  In the case of disposing an independent storage tank, the drainage storage tank 8 is subjected to sufficient coating in accordance with the selected material after selecting a material so as not to corrode in consideration of its use. In addition, when the outer plate 7 or the inner wall 5 having a double outer plate structure is used as a part of the drainage storage tank 8, sufficient coating is performed on the portion. Further, if necessary, a liquid level gauge is provided to detect the water level in the drainage storage tank 8.

  As shown in FIG. 3, the drainage storage tank 8 includes a wash basin 11, a sink 12, a floor drain 13 in a unit lavatory, an air conditioner unit 14, a cold water drinker 15, a washing machine 16, etc. A pipe 9a for guiding general domestic wastewater and sewage treated water from a treated water device (not shown) is provided, and further, a pipe 9b for discharging the wastewater in the wastewater storage tank 8 from the shore side to the outside of the ship is provided. This outboard discharge pipe 9b is provided with an outboard discharge valve 10 approved by an authorized organization such as the classification society. Normally, a discharge pump (not shown) is provided in this outboard discharge piping system, but when the drainage storage tank 8 is disposed sufficiently above the full load water line (LWL). Since gravity drainage is also possible, in this case, the discharge pump can be omitted.

  Further, if necessary, if a sewage storage tank (not shown) before the sewage treatment is provided in the outer space portions 6 and 7 of the fuel oil tank 3 formed by a double outer plate structure, the sewage storage tank portion The arrangement space in the engine room 2 can also be used more effectively.

  If there is an engine zone 2 at the stern, there are usually residential areas and bridges where basins 11 and sinks 12 for discharging general domestic wastewater are located at the stern. If it arrange | positions at the heel side of 2, the piping 9a for general domestic waste water will be short. In addition, since the sewage treatment apparatus is often arranged in the engine area 2, the sewage treatment water and the sewage pipe can be shortened.

  In FIG. 3, reference numeral 21 indicates a bridge deck, 22 indicates a D deck, 23 indicates a C deck, 24 indicates an A deck, 25 indicates an upper deck, and 26 indicates a third deck. CL indicates the hull center line and BALL. W. L. Indicates ballast draft.

  According to the ship 1 having the above-described configuration, the space 6 of the double outer plate structures 4 and 5 of the fuel oil tank 3 can be effectively used and also can be effectively used in terms of the arrangement space in the engine area 2. Moreover, the piping 9a for general domestic wastewater or sewage treated water can be shortened, and the structure of the drainage storage tank 8 can also play a role of shock mitigation at the time of collision.

It is a side view which shows the empty space which arrange | positions the storage tank for drainage of the ship of embodiment of this invention. It is a top view which shows the space which arrange | positions the storage tank for drainage of the ship of embodiment of this invention. It is a piping distribution diagram showing a drainage storage tank and piping of an embodiment of the present invention. It is a piping system diagram which shows piping when not providing the storage tank for drainage.

Explanation of symbols

1 Ship 2 Engine area 3 Fuel oil tank 4 Outer plate (outer wall of double outer plate structure)
5 Inner wall of double outer plate structure 6 Space part (first space part)
7 Space part (2nd space part)
8 Drainage storage tank 9a, 9b Piping 10 Outboard discharge valve 11 Basin 12 Sink

Claims (4)

  In a ship having a double outer plate structure provided for collision buffering outside a fuel oil tank, a storage tank is provided in a space portion outside the fuel oil tank formed by the double outer plate structure, and the storage tank A pipe for guiding drainage containing at least one of general domestic wastewater and treated water of sewage is connected to the pipe, and a pipe for discharging the drainage in the storage tank from the shore side to the outside of the ship is provided with an outboard discharge valve. A ship equipped with a drainage storage tank, wherein the storage tank is a drainage storage tank for storing the drainage.   The ship provided with the storage tank for drainage according to claim 1, wherein the storage tank is disposed above the full load water line.   The ship provided with the storage tank for drainage according to claim 1, wherein the storage tank is disposed below the full load water line.   The waste water according to claim 1, 2, or 3, wherein a waste water storage tank for storing waste water before waste water treatment is provided in a space outside the fuel oil tank formed by the double outer plate structure. A ship equipped with a storage tank.

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