Ship sludge treatment system and treatment method

Abstract

The invention relates to a ship sludge treatment system and method. The treatment system comprises a sludge storage unit, a sludge transfer pipeline, a sludge circulation pipeline and a sewage return pipeline. The sludge storage unit comprises a sludge storage tank. One end of the sludge transfer pipeline is communicated with the sludge storage tank, and the other end is communicated with the sewage treatment unit. One end of the sludge circulation pipeline is communicated with the bottom of the sludge storage tank, and the other end is communicated with the top of the sludge storage tank. One end of the sewage return pipeline is communicated with the sludge storage tank, the other end of the sewage return pipeline is communicated with the sewage treatment unit, and the sewage return pipeline is used for conveying settled upper-layer sewage in the sludge storage tank to the sewage treatment unit. The ship sludge treatment system can meet the daily operation requirement of ship sludge storage, and can greatly reduce the water content of the sludge in the tank and reduce the volume of the sludge stored in the tank, so that the storage capacity of the sludge storage tank is increased, the storage time of the sludge in a limited space on a ship is prolonged, and the frequency of transferring the sludge by the ship in shore is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and in particular to a ship sludge treatment system and a treatment method. Background Art

[0002] During the voyage of ships, a large number of crew members need to live and work for a long time. During this period, a large amount of sewage mixed with various sundries will be generated during the cooking, bathing and other life production processes of the crew. The sewage directly enters the sewage treatment unit through the waste pipe. The water treated by the sewage treatment unit can be discharged directly into the sea, but the remaining slurry sludge cannot be discharged directly into the sea, otherwise it will cause pollution to the sea. It can only be regularly transported to the shore for pollution-free treatment.

[0003] As the functions of ships become increasingly complex and the living conditions on board improve, the amount of sludge generated daily is also increasing. There is an urgent need for a method that can fully utilize limited space to process and store more sludge. Summary of the invention

[0004] One purpose of the present invention is to solve the deficiencies in the prior art and provide a ship sludge treatment system. To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A ship sludge treatment system, comprising:

[0006] A sludge storage unit, comprising a sludge storage tank for storing sludge, the sludge storage unit being used to receive the sludge outputted from the sewage treatment unit;

[0007] A sludge transfer pipeline, one end of which is connected to the sludge storage tank and the other end of which is connected to the sewage treatment unit. A sludge transfer pump and a first switch valve are provided on the sludge transfer pipeline;

[0008] A sludge circulation pipeline, one end of which is connected to the bottom of the sludge storage tank, and the other end of which is connected to the top of the sludge storage tank. A second switch valve is provided on the sludge circulation pipeline. The sludge circulation pipeline is used to transport the sludge at the bottom of the sludge storage tank to the top of the sludge storage tank so that the sludge is circulated;

[0009] A sewage return pipeline is connected to the sludge storage tank at one end and to the sewage treatment unit at the other end. A third switch valve is provided on the sewage return pipeline. The sewage return pipeline is used to transport the upper sewage after sedimentation in the sludge storage tank to the sewage treatment unit.

[0010] In one of the embodiments, the ship sludge treatment system further includes a driving pump, which is arranged on the sludge circulation pipeline and the sewage return pipeline, and is used to drive the sludge circulation pipeline for sludge circulation or drive the sewage return pipeline for sewage return.

[0011] In one embodiment, the sludge circulation pipeline includes a first circulation branch and a second circulation branch, one end of the first circulation branch is connected to the bottom of the sludge storage tank, the other end of the first circulation branch is connected to the inlet of the driving pump, the outlet of the driving pump is connected to one end of the second circulation branch, and the other end of the second circulation branch is connected to the top of the sludge storage tank;

[0012] The second switch valve is arranged on the first circulation branch, and the second circulation branch is also provided with a fourth switch valve.

[0013] In one embodiment, the sewage return pipeline includes a first return branch and a second return branch, one end of the first return branch is connected to the sludge storage tank, the other end of the first return branch is connected to the inlet of the driving pump, the outlet of the driving pump is connected to one end of the second return branch, and the other end of the second return branch is connected to the sewage treatment unit;

[0014] The third switch valve is arranged on the first reflux branch, and the fifth switch valve is also arranged on the second reflux branch.

[0015] In one of the embodiments, the ship sludge treatment system further comprises an aeration device, which is disposed in the sludge storage tank and is used to aerate the sludge storage tank.

[0016] In one embodiment, the aeration device includes an aeration pipe, which is disposed at the bottom of the sludge storage tank. The aeration pipe is used to communicate with an external air source so as to utilize the external air source to aerate the sludge storage tank.

[0017] In one embodiment, a first sampling valve port and a second sampling valve port are provided on the side wall of the sludge storage tank, the first sampling valve port is located above the second sampling valve port, and the first sampling valve port and the second sampling valve port are respectively used to sample the sludge in the sludge storage tank.

[0018] In one of the embodiments, a liquid level meter is provided in the sludge storage tank, and the liquid level meter is used to detect the liquid level in the sludge storage tank.

[0019] In one of the embodiments, the ship sludge treatment system also includes a sludge discharge pipeline, which is connected to the bottom of the sludge storage tank. A sixth switch valve is provided on the sludge discharge pipeline, and the sixth switch valve is used to control the on-off of the sludge discharge pipeline.

[0020] In one of the embodiments, the bottom of the sludge storage tank is in an inverted cone shape.

[0021] Another object of the present invention is to provide a ship sludge treatment method, which uses any of the above ship sludge treatment systems to treat sludge, and the treatment method comprises:

[0022] Open the sludge delivery pump and the first switch valve to allow the sludge to enter the sludge storage tank;

[0023] Open the second on-off valve and close the third on-off valve to allow the sludge to circulate between the bottom and the top of the sludge storage tank through the sludge circulation pipeline; or

[0024] The third switch valve is opened and the second switch valve is closed, so that the upper sewage after sedimentation in the sludge storage tank enters the sewage treatment unit through the sewage return pipeline.

[0025] In one embodiment, the ship sludge treatment method further comprises:

[0026] After the sludge in the sludge storage tank is allowed to settle for a preset time, the sludge in the sludge storage tank is sampled at least twice, with each sampling location being at a different height of the sludge storage tank;

[0027] Analyze the sampling results and determine whether the moisture content of any two samples is the same;

[0028] When the moisture contents of any two samples are the same, the third switch valve is opened and the second switch valve is closed.

[0029] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects:

[0030] In the present invention, the ship sludge treatment system includes a sludge storage unit, a sludge transfer pipeline, a sludge circulation pipeline and a sewage return pipeline. Among them, the sludge storage unit includes a sludge storage tank for storing sludge, and the sludge transfer pipeline is used to transfer the sludge output from the sewage treatment unit to the sludge storage tank for storage. The sludge circulation pipeline is used to transport the sludge at the bottom of the sludge storage tank to the top of the sludge storage tank so that the sludge can be circulated to meet the normal operation requirements of sludge storage. The sewage return pipeline is used to transport the upper sewage after sedimentation in the sludge storage tank to the sewage treatment unit, thereby greatly reducing the water content of the sludge in the sludge storage tank and reducing the volume of the sludge stored in the sludge storage tank.

[0031] Therefore, the ship sludge treatment system of the present invention can meet the daily operation requirements of ship sludge storage, and through regular sedimentation and clarification of the sludge in the sludge storage tank and sewage return, the water content of the sludge in the tank can be greatly reduced, and the volume of the sludge stored in the tank can be reduced, which is beneficial to increase the storage capacity of the sludge storage tank, increase the sludge storage time in the limited space on the ship, and reduce the frequency of ships docking to transport sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the principle of a ship sludge treatment system according to an embodiment of the present invention.

[0033] Figure 2 It is a schematic flow chart of a ship sludge treatment method according to an embodiment of the present invention.

[0034] Figure 3 It is a flow chart of a ship sludge treatment method according to another embodiment of the present invention.

[0035] Figure 4 yes Figure 3 A schematic diagram of the steps for determining when to perform sewage backflow in the treatment method shown.

[0036] The following are the descriptions of the reference numerals:

[0037] 10- sewage treatment unit; 11- sea discharge pipeline; 12- sea discharge valve;

[0038] 20-sludge storage unit; 21-sludge storage tank; 22-aeration device; 23-aeration pipe; 24-blower; 25-first sampling valve port; 26-second sampling valve port; 27-liquid level meter; 28-sludge discharge pipeline; 29-sixth switch valve;

[0039] 30-sludge transfer pipeline; 31-sludge delivery pump; 32-first switch valve;

[0040] 40-sludge circulation pipeline; 41-second switch valve; 42-first circulation branch; 43-second circulation branch; 44-fourth switch valve;

[0041] 50-sewage return pipe; 51-third switch valve; 52-first return branch; 53-second return branch; 54-fifth switch valve;

[0042] 60-Drive pump. DETAILED DESCRIPTION

[0043] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0044] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indications of directions or positional relationships (such as up, down, left, right, front and back, etc.) are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] The ship sludge treatment system of the embodiment of the present application is mainly used to treat the sludge remaining after the sewage mixed with various impurities generated on the ship is treated by the sewage treatment unit 10. Figure 1 In the embodiment of the present application, the sewage treatment unit 10 is used to treat the sewage mixed with various sundries generated by the ship on a daily basis and the sewage generated by the sludge sedimentation and clarification in the sludge storage tank 21.

[0047] For example, the sewage treatment unit 10 may include a sewage purification device, a sewage filtering device and a sewage disinfection device. Among them, the sewage purification device can use microbial decomposition technology to purify the sewage. The sewage filtering device can use a filter membrane or a filter tank filler to filter the sewage. The sewage disinfection device can use ultraviolet rays to disinfect and sterilize the sewage. Therefore, the sewage treated by the sewage treatment unit 10 can meet the sea discharge standard.

[0048] like Figure 1 As shown, for example, the sewage treatment unit 10 is provided with a sea discharge pipeline 11, which leads to the seawater outside the ship. The sea discharge pipeline 11 is used to discharge the qualified water treated by the sewage treatment unit 10 into the sea. Among them, the sea discharge pipeline 11 can be provided with a sea discharge valve 12 for controlling the opening and closing of the sea discharge pipeline 11, so that the qualified water can be discharged into the sea through the sea discharge valve 12 as needed.

[0049] Of course, the sewage treatment unit 10 may also include other sewage treatment processes and devices, depending on the specific situation. In this application, the specific structural form of the sewage treatment unit 10 is not the inventive point of this application, and will not be described in detail here.

[0050] It should be noted that the water treated by the sewage treatment unit 10 can be directly discharged into the sea, but the remaining slurry sludge cannot be directly discharged into the sea. The sludge is usually stored and regularly transported to the shore for pollution-free treatment. The ship sludge treatment system of the embodiment of the present application is used to solve the sludge storage problem on the ship.

[0051] See also Figure 1The ship sludge treatment system of the embodiment of the present invention comprises a sludge storage unit 20, a sludge transfer pipeline 30, a sludge circulation pipeline 40 and a sewage return pipeline 50. The sludge storage unit 20 is used to receive the sludge output by the sewage treatment unit 10, and comprises a sludge storage tank 21.

[0052] like Figure 1 As shown, the sludge storage tank 21 may be a substantially cylindrical tank structure, which may be arranged vertically.

[0053] In one embodiment, the bottom of the sludge storage tank 21 is in an inverted cone shape. By setting the bottom of the sludge storage tank 21 in an inverted cone shape, it is beneficial to discharge the sludge and avoid the problem of dead corners during sludge discharge that causes the sludge to be unable to be discharged cleanly.

[0054] like Figure 1 As shown, one end of the sludge transfer pipeline 30 is connected to the sludge storage tank 21, and the other end is connected to the sewage treatment unit 10. The sludge transfer pipeline 30 may be provided with a sludge delivery pump 31 and a first switch valve 32. The sludge delivery pump 31 is used to drive the sludge flow in the sludge transfer pipeline 30 so that the sludge can be smoothly transported from the sewage treatment unit 10 to the sludge storage tank 21. The first switch valve 32 is used to control the on-off of the sludge transfer pipeline 30 so as to transport the sludge from the sewage treatment unit 10 to the sludge storage tank 21 according to actual needs.

[0055] like Figure 1 As shown, one end of the sludge circulation pipeline 40 is connected to the bottom of the sludge storage tank 21, and the other end is connected to the top of the sludge storage tank 21. The sludge circulation pipeline 40 is used to transport the sludge at the bottom of the sludge storage tank 21 to the top of the sludge storage tank 21 so that the sludge can be circulated. Through the sludge circulation pipeline 40, the continuous circulation of the sludge can be achieved, the deposition of inert sludge in the sludge storage tank 21 is prevented, and it is conducive to the subsequent sufficient precipitation and clarification of the sludge.

[0056] The sludge circulation pipeline 40 may be provided with a second switch valve 41. The second switch valve 41 is used to control the on-off of the sludge circulation pipeline 40 so as to circulate the sludge in the sludge storage tank 21 according to actual needs.

[0057] See also Figure 1 In one embodiment, the ship sludge treatment system further includes an aeration device 22, which is disposed in the sludge storage tank 21 and is used to aerate the sludge storage tank 21. Aeration of the sludge storage tank 21 by the aeration device 22 can prevent the sludge from accumulating for a long time to generate flammable gases such as hydrogen sulfide, while ensuring that the sludge in the sludge storage tank 21 is in a flowable state for circulation.

[0058] In one embodiment, the aeration device 22 may include an aeration pipe 23, which is disposed at the bottom of the sludge storage tank 21. The aeration pipe 23 is used to communicate with an external air source to use the external air source to aerate the sludge storage tank 21. The external air source may be an air pump or a fan.

[0059] Furthermore, the aeration device 22 may also include a blower 24, which is connected to the aeration pipe 23 through a pipeline to supply air to the aeration pipe 23. Of course, in other embodiments, the aeration device 22 may also be in other structural forms, as long as the purpose of aerating the sludge storage tank 21 can be achieved.

[0060] like Figure 1 As shown, one end of the sewage return pipe 50 is connected to the sludge storage tank 21, and the other end is connected to the sewage treatment unit 10. The sewage return pipe 50 is used to transport the upper sewage after sedimentation in the sludge storage tank 21 to the sewage treatment unit 10. The sewage return pipe 50 can be connected to a position above the middle of the side wall of the sludge storage tank 21, so that the upper sewage can enter the sewage return pipe 50.

[0061] See also Figure 1 A third switch valve 51 is provided on the sewage return pipeline 50. The third switch valve 51 is used to control the on-off of the sewage return pipeline 50, so as to return the upper sewage in the sludge storage tank 21 to the sewage treatment unit 10 according to actual needs.

[0062] It should be noted that the water flow rate of the sewage return pipe 50 needs to fully consider the design specifications such as the peak processing capacity of the sewage treatment unit 10. For example, a flow valve may be provided on the sewage return pipe 50, and the flow valve may be used to control the water flow rate flowing through the sewage return pipe 50 so that the return water flow rate can meet the peak processing capacity requirements of the sewage treatment unit 10.

[0063] In this embodiment, the sewage after sedimentation and clarification in the sludge storage tank 21 can be returned to the sewage treatment unit 10 through the sewage return pipeline 50, thereby reducing the water content of the sludge and reducing the volume of the sludge in the sludge storage tank 21, which is beneficial for the sludge storage tank 21 to store more sludge and reduce the frequency of transporting sludge to the shore.

[0064] See also Figure 1 In one embodiment, a first sampling valve port 25 and a second sampling valve port 26 are provided on the side wall of the sludge storage tank 21. The first sampling valve port 25 and the second sampling valve port 26 are respectively used to sample the sludge in the sludge storage tank 21. The first sampling valve port 25 is located above the second sampling valve port 26, so that the sludge at different heights in the sludge storage tank 21 can be sampled, so as to more accurately reflect the sedimentation and clarification effect of the sludge.

[0065] like Figure 1 As shown, for example, the first sampling valve port 25 can be set at the middle position of the side wall of the sludge storage tank 21. The second sampling valve port 26 can be set at the bottom position of the side wall of the sludge storage tank 21. Of course, in other embodiments, the first sampling valve port 25 and the second sampling valve port 26 can also be set at other positions on the side wall of the sludge storage tank 21, and the specific positions can be determined by the moisture content of the sludge generated by the sewage treatment unit 10 and the design conditions.

[0066] In this embodiment, after the sludge in the sludge storage tank 21 is left to settle for a period of time, samples can be taken through the first sampling valve port 25 and the second sampling valve port 26. When the water content of the samples taken through the first sampling valve port 25 and the second sampling valve port 26 is the same, it can be said that the sludge in the sludge storage tank 21 has been fully settled and clarified. At this time, the upper sewage in the sludge storage tank 21 can be refluxed.

[0067] It should be noted that, in the present application, the water content of the samples obtained through the first sampling valve port 25 and the second sampling valve port 26 is the same, which does not mean that the two water content values ​​are absolutely equal, but that the two water content values ​​are within the same threshold range. That is, when the water content of the samples obtained through the first sampling valve port 25 and the second sampling valve port 26 is within the same threshold range, the upper sewage in the sludge storage tank 21 can be refluxed.

[0068] See also Figure 1 As shown, in one embodiment of the application, the ship sludge treatment system includes a driving pump 60, which is arranged on the sludge circulation pipeline 40 and the sewage return pipeline 50. The driving pump 60 is used to drive the sludge circulation pipeline 40 to sludge circulation or drive the sewage return pipeline 50 to return sewage. Thus, the driving pump 60 can ensure the smooth flow of sludge in the sludge circulation pipeline 40 and ensure the smooth progress of sludge circulation. Alternatively, the driving pump 60 can ensure the smooth flow of sewage in the sewage return pipeline 50 and ensure the smooth progress of sewage return.

[0069] like Figure 1 As shown, in one embodiment, the sludge circulation pipeline 40 includes a first circulation branch 42 and a second circulation branch 43. One end of the first circulation branch 42 is connected to the bottom of the sludge storage tank 21, the other end of the first circulation branch 42 is connected to the inlet of the driving pump 60, the outlet of the driving pump 60 is connected to one end of the second circulation branch 43, and the other end of the second circulation branch 43 is connected to the top of the sludge storage tank 21.

[0070] The second switch valve 41 is disposed on the first circulation branch 42. The second circulation branch 43 is also provided with a fourth switch valve 44.

[0071] In this embodiment, by dividing the sludge circulation pipeline 40 into two branches, the setting of the driving pump 60 can be facilitated, so that the driving pump 60 can drive the sludge circulation pipeline 40 or the sewage return pipeline 50 as needed; at the same time, by setting two switch valves, it is easier to accurately control the sludge circulation pipeline 40.

[0072] like Figure 1 As shown, in one embodiment, the sewage return pipeline 50 includes a first return branch 52 and a second return branch 53. One end of the first return branch 52 is connected to the sludge storage tank 21, the other end of the first return branch 52 is connected to the inlet of the driving pump 60, the outlet of the driving pump 60 is connected to one end of the second return branch 53, and the other end of the second return branch 53 is connected to the sewage treatment unit 10.

[0073] The third switch valve 51 is disposed on the first reflux branch 52. The second reflux branch 53 is also provided with a fifth switch valve 54.

[0074] In this embodiment, by dividing the sewage return pipeline 50 into two branches, the setting of the driving pump 60 can be facilitated, so that the driving pump 60 can drive the sludge circulation pipeline 40 or the sewage return pipeline 50 as needed; at the same time, by setting two switch valves, it is easier to accurately control the sewage return pipeline 50.

[0075] For example, when sludge circulation is required, the second switch valve 41 and the fourth switch valve 44 are opened, the drive pump 60 is turned on, and the third switch valve 51 and the fifth switch valve 54 are closed, so that the sludge at the bottom of the sludge storage tank 21 can be transferred to the top of the sludge storage tank 21 through the sludge circulation pipeline 40.

[0076] When sewage backflow is required, the third switch valve 51 and the fifth switch valve 54 are opened, the drive pump 60 is turned on, and the second switch valve 41 and the fourth switch valve 44 are closed, so that the clarified sewage in the sludge storage tank 21 can be transported to the sewage treatment unit 10 through the sewage return pipeline 50.

[0077] In the embodiment of the present application, the sludge circulation pipeline 40 and the sewage return pipeline 50 share a driving pump 60, which can drive the sludge in the sludge circulation pipeline 40 to flow, so that the sludge can circulate between the bottom and the top of the sludge storage tank 21 through the sludge circulation pipeline 40. The driving pump 60 can also drive the sewage in the sewage return pipeline 50 to flow, so that the upper sewage after sedimentation in the sludge storage tank 21 can flow back to the sewage treatment unit 10. This can save the number of pump bodies in the system, which is conducive to reducing the energy consumption of system operation.

[0078] However, the present application is not limited thereto, and it is understood that in other embodiments, pump bodies for driving may be respectively provided on the sludge circulation pipeline 40 and the sewage return pipeline 50. That is, a circulation pump may be provided on the sludge circulation pipeline 40, and the circulation pump is used to drive the sludge in the sludge circulation pipeline 40 to flow. A return pump may be provided on the sewage return pipeline 50, and the return pump is used to drive the sewage in the sewage return pipeline 50 to flow.

[0079] See also Figure 1 In one embodiment of the present application, a liquid level meter 27 is provided in the sludge storage tank 21, and the liquid level meter 27 is used to detect the liquid level in the sludge storage tank 21. When the liquid level meter 27 detects that the liquid level in the sludge storage tank 21 is high, on the one hand, it can be indicated that the sludge in the sludge storage tank 21 needs to be precipitated, clarified and returned. Or, on the other hand, it can be indicated that the sludge in the sludge storage tank 21 has reached the discharge volume, and the sludge in the tank needs to be discharged. Therefore, by providing the liquid level meter 27, it is easy to grasp the storage volume of the sludge in the sludge storage tank 21, and then the system can perform different operations to ensure the stable operation of the system.

[0080] See also Figure 1 In one embodiment, the ship sludge treatment system further includes a sludge discharge pipeline 28, which is connected to the bottom of the sludge storage tank 21. When the sludge in the sludge storage tank 21 needs to be discharged, the sludge can be discharged through the sludge discharge pipeline 28 to release the space in the tank.

[0081] Among them, a sixth switch valve 29 may be provided on the sludge discharge pipeline 28, and the sixth switch valve 29 is used to control the on-off of the sludge discharge pipeline 28, so that the sludge in the sludge storage tank 21 can be discharged according to actual needs through the sixth switch valve 29.

[0082] It should be noted that, in the embodiment of the present application, the first switch valve 32, the second switch valve 41, the third switch valve 51, the fourth switch valve 44, the fifth switch valve 54 and the sixth switch valve 29, as well as the sea discharge valve 12 can all be remote control valves capable of remote control of switching, such as hydraulic remote control valves, electric remote control valves, etc. Therefore, each valve can be remotely controlled to switch without manual operation, thereby improving the degree of automation of the ship sludge treatment system. Of course, in other embodiments, each valve can also be manually operated as needed.

[0083] The sludge treatment process of the ship sludge treatment system in the embodiment of the present application is roughly as follows:

[0084] First, the sewage treatment unit 10 can discharge the treated sewage into the sea through the sea discharge pipeline 11. At the same time, the sewage treatment unit 10 can open the first switch valve 32 and the sludge delivery pump 31 according to the set frequency, and discharge the remaining sludge into the sludge storage tank 21 through the sludge transfer pipeline 30.

[0085] See also Figure 1 When the ship sludge treatment system is in normal operation, the second switch valve 41 and the fourth switch valve 44 remain open, the drive pump 60 remains open, and the sixth switch valve 29, the third switch valve 51 and the fifth switch valve 54 remain closed, so that the sludge at the bottom of the sludge storage tank 21 can be transferred to the top of the sludge storage tank 21 through the sludge circulation pipeline 40, thereby realizing continuous circulation of the sludge, preventing the deposition of inert sludge in the sludge storage tank 21, and facilitating the subsequent sufficient precipitation and clarification of the sludge.

[0086] At the same time, the blower 24 can be turned on to aerate the sludge storage tank 21 through the aeration pipe 23 to prevent the sludge from accumulating for a long time and producing flammable gases such as hydrogen sulfide, while ensuring that the sludge in the sludge storage tank 21 is in a flowable state for circulation.

[0087] The ship sludge treatment system can also perform regular sedimentation, clarification and return flow according to the required working conditions. Specifically, Figure 1 As shown, when the liquid level meter 27 detects that the liquid level in the sludge storage tank 21 is high, it means that the sludge in the sludge storage tank 21 needs to be precipitated, clarified and returned to reduce the space occupied by the sludge. At this time, the blower 24 and the drive pump 60 can be kept closed, the sixth switch valve 29, the second switch valve 41 and the fourth switch valve 44 can be kept closed, and the third switch valve 51 and the fifth switch valve 54 can be kept closed. After the sludge is left to stand in the sludge storage tank 21 for a specified time, the operator can take samples through the first sampling valve port 25 and the second sampling valve port 26 respectively. When the water content of the samples at the two sampling points is the same, the third switch valve 51 and the fifth switch valve 54 are opened, the drive pump 60 is opened, and the sixth switch valve 29, the second switch valve 41 and the fourth switch valve 44 are kept closed. Then the clarified upper sewage in the sludge storage tank 21 can be transported to the sewage treatment unit 10 through the sewage return pipeline 50. By regularly sedimenting, clarifying and returning sewage to the sludge in the sludge storage tank 21, the water content of the sludge can be greatly reduced, and the volume of the sludge stored in the sludge storage tank 60 can be reduced, which is beneficial to increase the storage capacity of the sludge storage tank 60, increase the sludge storage time in the limited space on the ship, and reduce the frequency of ships docking to transport sludge.

[0088] See also Figure 1After the ship sludge treatment system reaches the designed sludge storage period, or after sedimentation, clarification and reflux, when the liquid level in the tank is still at a high level, it is necessary to discharge the sludge in the sludge storage tank 21. At this time, the sixth switch valve 29 can be opened, and the second switch valve 41, the fourth switch valve 44, the third switch valve 51, the fifth switch valve 54, the driving pump 60 and the blower 24 can be closed, so that the sludge in the sludge storage tank 21 can be discharged by gravity through the sludge discharge pipeline 28.

[0089] See also Figure 2 As shown, another object of the present invention is to provide a ship sludge treatment method, which utilizes the ship sludge treatment system described in any of the above embodiments to treat sludge.

[0090] The processing method comprises:

[0091] S10 , turning on the sludge delivery pump 31 and the first switch valve 32 to allow the sludge to enter the sludge storage tank 21 .

[0092] S20, open the second switch valve 41 and close the third switch valve 51, so that the sludge circulates between the bottom and the top of the sludge storage tank 21 through the sludge circulation pipeline 40. For example, Figure 1 As shown in the example, the sludge circulation pipeline 40 includes a first circulation branch 42 and a second circulation branch 43, and a switch valve is provided on each branch. The sewage return pipeline 50 includes a first return branch 52 and a second return branch 53, and a switch valve is provided on each branch. Therefore, in S20, the second switch valve 41 and the fourth switch valve 44 need to be opened, and the third switch valve 51 and the fifth switch valve 54 need to be closed, so that the driving pump 60 can be used to realize the continuous circulation of sludge. At this time, the ship sludge treatment system is in the normal operation mode.

[0093] Or, if Figure 3 As shown, the processing method includes:

[0094] S10 , turning on the sludge delivery pump 31 and the first switch valve 32 to allow the sludge to enter the sludge storage tank 21 .

[0095] S20 ′, opening the third switch valve 51 and closing the second switch valve 41 , so that the upper sewage after sedimentation in the sludge storage tank 21 enters the sewage treatment unit 10 through the sewage return pipeline 50 .

[0096] For example, Figure 1As shown, the sludge circulation pipeline 40 includes a first circulation branch 42 and a second circulation branch 43, and each branch is provided with a switch valve. The sewage return pipeline 50 includes a first return branch 52 and a second return branch 53, and each branch is provided with a switch valve. Therefore, in S20', the third switch valve 51 and the fifth switch valve 54 need to be opened, and the second switch valve 41 and the fourth switch valve 44 need to be closed, so that the sewage can be returned by the driving pump 60. At this time, the ship sludge treatment system is in the sedimentation clarification and return mode.

[0097] Furthermore, the ship sludge treatment method may also include the following steps:

[0098] After the set storage period, the sixth switch valve 29 is opened to discharge the sludge in the sludge storage tank 21 to the outside through the sludge discharge pipeline 28. The second switch valve 41, the fourth switch valve 44, the third switch valve 51, the fifth switch valve 54, the driving pump 60 and the blower 24 are all kept closed. At this time, the ship sludge treatment system is in the sludge discharge mode.

[0099] See also Figure 4 In one embodiment, the ship sludge treatment method further includes a step of determining when the system performs sewage backflow. Specifically, the determination step includes:

[0100] S21, after the sludge in the sludge storage tank 21 is allowed to settle for a preset time, the sludge in the sludge storage tank 21 is sampled at least twice, wherein each sampling position is located at a different height position of the sludge storage tank 21.

[0101] For example, Figure 1 As shown, two samplings can be performed through the first sampling valve port 25 and the second sampling valve port 26 provided on the side wall of the sludge storage tank 21 .

[0102] S22, analyzing the sampling results of each time, and determining whether the moisture content of any two samples is the same.

[0103] S23, when the moisture content of any two samples is the same, the third switch valve 51 is opened and the second switch valve 41 is closed. Figure 1As shown in the example, the sludge circulation pipeline 40 includes a first circulation branch 42 and a second circulation branch 43, and a switch valve is provided on each branch. The sewage return pipeline 50 includes a first return branch 52 and a second return branch 53, and a switch valve is provided on each branch. Therefore, in S23, when the moisture content of the samples taken at any two times is the same, the upper sewage in the sludge storage tank 21 can be returned. At this time, the third switch valve 51 and the fifth switch valve 54 need to be opened, and the second switch valve 41 and the fourth switch valve 44 need to be closed, so that the upper sewage in the sludge storage tank 21 can be returned to the sewage treatment unit 10 under the drive of the driving pump 60. Therefore, by returning the precipitated and clarified sewage in the sludge storage tank 21 to the sewage treatment unit 10 through the sewage return pipeline 50, the moisture content of the sludge can be reduced, and the volume of the sludge in the sludge storage tank 21 can be reduced, which is conducive to the sludge storage tank 21 storing more sludge and reducing the frequency of sludge transportation to the shore.

[0104] The ship sludge treatment system and method of the embodiment of the present application can further treat the sludge stored in the ship's sludge storage tank 21, realize the normal operation of sludge treatment and discharge on demand; and by regularly sedimenting, clarifying and reflowing the sludge, it can greatly reduce the space required for sludge storage, extend the storage period, and reduce the frequency of ships docking to transport sludge.

[0105] The above embodiments are merely exemplary descriptions of the structures. The structures in the embodiments are not fixed combination structures. In the absence of structural conflicts, the structures in multiple embodiments can be used in any combination.

[0106] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A ship sludge treatment system, characterized in that: include: A sludge storage unit, comprising a sludge storage tank for storing sludge, wherein the sludge storage unit is used to receive the sludge outputted from the sewage treatment unit; A sludge transfer pipeline, one end of which is connected to the sludge storage tank and the other end of which is connected to the sewage treatment unit, and a sludge transfer pump and a first switch valve are provided on the sludge transfer pipeline; A sludge circulation pipeline, one end of which is connected to the bottom of the sludge storage tank, and the other end of which is connected to the top of the sludge storage tank. A second switch valve is provided on the sludge circulation pipeline. The sludge circulation pipeline is used to transport the sludge at the bottom of the sludge storage tank to the top of the sludge storage tank to circulate the sludge; A sewage return pipeline, one end of which is connected to the sludge storage tank, and the other end of which is connected to the sewage treatment unit. A third switch valve is provided on the sewage return pipeline. The sewage return pipeline is used to transport the upper sewage after sedimentation in the sludge storage tank to the sewage treatment unit.

2. The ship sludge treatment system according to claim 1, characterized in that: It also includes a driving pump, which is arranged on the sludge circulation pipeline and the sewage return pipeline, and is used to drive the sludge circulation pipeline to sludge circulation or drive the sewage return pipeline to return sewage.

3. The ship sludge treatment system according to claim 2, characterized in that: The sludge circulation pipeline includes a first circulation branch and a second circulation branch, one end of the first circulation branch is connected to the bottom of the sludge storage tank, the other end of the first circulation branch is connected to the inlet of the driving pump, the outlet of the driving pump is connected to one end of the second circulation branch, and the other end of the second circulation branch is connected to the top of the sludge storage tank; The second switch valve is arranged on the first circulation branch, and a fourth switch valve is also arranged on the second circulation branch.

4. The ship sludge treatment system according to claim 2, characterized in that: The sewage return pipeline includes a first return branch and a second return branch, one end of the first return branch is connected to the sludge storage tank, the other end of the first return branch is connected to the inlet of the driving pump, the outlet of the driving pump is connected to one end of the second return branch, and the other end of the second return branch is connected to the sewage treatment unit; The third switch valve is arranged on the first reflux branch, and a fifth switch valve is also arranged on the second reflux branch.

5. The ship sludge treatment system according to claim 1, characterized in that: It also includes an aeration device, which is arranged in the sludge storage tank and is used to aerate the sludge storage tank.

6. The ship sludge treatment system according to claim 5, characterized in that: The aeration device comprises an aeration pipe, which is arranged at the bottom of the sludge storage tank and is used to communicate with an external air source so as to aerate the sludge storage tank using the external air source.

7. The ship sludge treatment system according to claim 1, characterized in that: A first sampling valve port and a second sampling valve port are provided on the side wall of the sludge storage tank. The first sampling valve port is located above the second sampling valve port. The first sampling valve port and the second sampling valve port are respectively used to sample the sludge in the sludge storage tank.

8. The ship sludge treatment system according to claim 1, characterized in that: A liquid level meter is arranged in the sludge storage tank, and the liquid level meter is used to detect the liquid level in the sludge storage tank.

9. The ship sludge treatment system according to claim 1, characterized in that: It also includes a sludge discharge pipeline, which is connected to the bottom of the sludge storage tank. The sludge discharge pipeline is provided with a sixth switch valve, and the sixth switch valve is used to control the on-off of the sludge discharge pipeline.

10. The ship sludge treatment system according to claim 1, characterized in that: The bottom of the sludge storage tank is in an inverted cone shape.

11. A method for treating ship sludge, characterized in that: The sludge is treated by using the ship sludge treatment system according to any one of claims 1 to 10, and the treatment method comprises: Opening the sludge delivery pump and the first switch valve to allow the sludge to enter the sludge storage tank; Open the second on-off valve and close the third on-off valve to allow the sludge to circulate between the bottom and the top of the sludge storage tank through the sludge circulation pipeline; or The third switch valve is opened and the second switch valve is closed, so that the upper sewage after sedimentation in the sludge storage tank enters the sewage treatment unit through the sewage return pipeline.

12. The method for treating ship sludge according to claim 11, characterized in that: Also includes: After the sludge in the sludge storage tank is allowed to settle for a preset time, sampling the sludge in the sludge storage tank at least twice, with each sampling location being located at a different height of the sludge storage tank; Analyze the sampling results and determine whether the moisture content of any two samples is the same; When the moisture contents of any two samples are the same, the third switch valve is opened and the second switch valve is closed.

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