Marine waste water treatment system and polar ship

Abstract

The utility model belongs to ship technology field discloses marine wastewater treatment system and polar ship, the output of the black water collection cabin of marine wastewater treatment system can selectively communicate or disconnect with the input of sewage treater, the sewage treater is used for filtering, depositing and disinfecting the wastewater that black water collection cabin output, the output of the grey water collection cabin can selectively communicate with the input of primary filter assembly or wastewater discharge outlet, the water output of primary filter assembly can selectively communicate with the input of grey water collection cabin or the input of secondary filter assembly, the water output of secondary filter assembly can selectively communicate with clean water collection cabin or disconnect, the water output of sewage treater can selectively communicate with the input of grey water collection cabin or wastewater discharge outlet, primary filter assembly and secondary filter assembly are all used for filtering the wastewater that grey water collection cabin output, the working flexibility of marine wastewater treatment system is good, wastewater treatment quality is high, and can save freshwater resources.

Description

Technical Field

[0001] This utility model relates to the field of marine technology, and in particular to marine wastewater treatment systems and polar vessels. Background Technology

[0002] When ships sail in polar regions, to prevent pollution of polar waters by shipboard wastewater, the discharge of wastewater is usually prohibited in designated areas within polar waters. However, ships generate a large amount of domestic wastewater every day.

[0003] Currently, there are several main treatment solutions for domestic wastewater from polar ships: one is to install wastewater storage tanks on the polar ships to store domestic wastewater, but polar ships are usually research vessels or small polar expedition cruise ships, and the installation of wastewater storage tanks is limited by space; another is to install wastewater treatment systems on the polar ships. The existing wastewater treatment systems basically precipitate or crush impurities in the black water and then pass it into the grey water collection tank for treatment together with the grey water. Although this can achieve wastewater treatment, the operational flexibility and wastewater treatment quality of the wastewater treatment system still need to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a marine wastewater treatment system and a polar vessel to solve the aforementioned problems in wastewater treatment in the prior art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Marine wastewater treatment systems include:

[0007] The black water collection chamber and the wastewater treatment unit are provided, wherein the output end of the black water collection chamber can be selectively connected to or disconnected from the input end of the wastewater treatment unit; the wastewater treatment unit is used to filter, settle, and disinfect the wastewater output from the black water collection chamber.

[0008] The system comprises a greywater collection chamber, a primary filtration unit, a secondary filtration unit, and a purified water collection chamber. The output of the greywater collection chamber can be selectively connected to the input of the primary filtration unit or the wastewater discharge outlet. The water output of the primary filtration unit can be selectively connected to the input of the greywater collection chamber or the input of the secondary filtration unit. The water output of the secondary filtration unit can be selectively connected to or disconnected from the purified water collection chamber. The water output of the wastewater treatment unit can be selectively connected to the input of the greywater collection chamber or the wastewater discharge outlet. Both the primary and secondary filtration units are used to filter the wastewater output from the greywater collection chamber.

[0009] As an optional solution for the aforementioned marine wastewater treatment system, the primary filtration assembly includes a primary water filter, an oil sludge separator, and an air flotation dissolution processor. The output end of the ash water collection tank can be selectively connected to the input end of the primary water filter or the wastewater discharge outlet. The output end of the primary water filter is connected to the input end of the oil sludge separator. The water output end of the oil sludge separator can be selectively connected to or disconnected from the input end of the air flotation dissolution processor. The water output end of the air flotation dissolution processor can be selectively connected to the input end of the ash water collection tank or the input end of the secondary filtration assembly.

[0010] As an optional solution for the above-mentioned marine wastewater treatment system, the primary filtration assembly further includes a flocculant dosing device. The output end of the flocculant dosing device is connected to the pipeline connecting the output end of the primary water filter and the output end of the oil sludge separator. The flocculant dosing device is used to add flocculant to the wastewater flowing into the oil sludge separator.

[0011] As an optional solution for the above-mentioned marine wastewater treatment system, the marine wastewater treatment system further includes a waste residue buffer tank. The waste residue output end of the wastewater processor, the waste residue output end of the oil residue separator, and the waste residue output end of the air flotation dissolution processor can all be selectively connected to or disconnected from the input end of the waste residue buffer tank.

[0012] As an optional solution for the above-mentioned marine wastewater treatment system, the secondary filtration component includes a secondary water filter, and the water output end of the air flotation dissolution processor can be selectively connected to the input end of the grey water collection tank or the input end of the secondary water filter.

[0013] As an optional solution for the above-mentioned marine wastewater treatment system, the primary water filter is a filter screen, and / or the secondary water filter is a membrane filter.

[0014] As an optional solution to the above-mentioned marine wastewater treatment system, the marine wastewater treatment system further includes a sterilizer, wherein the water output end of the secondary filter component can be selectively connected to or disconnected from the input end of the sterilizer, and the output end of the sterilizer can be selectively connected to or disconnected from the input end of the purified water collection chamber.

[0015] As an optional solution for the above-mentioned marine wastewater treatment system, the marine wastewater treatment system further includes a pH meter, a pH dosing device, and a first circulation pipe. The pH meter is installed in the purified water collection chamber and is used to detect the pH value of the water in the purified water collection chamber. One end of the first circulation pipe can be selectively connected to or disconnected from the output end of the purified water collection chamber, and the other end of the first circulation pipe is connected to the output end of the secondary filtration component. The output end of the pH dosing device is connected between the two ends of the first circulation pipe.

[0016] As an optional solution to the aforementioned marine wastewater treatment system, a first transfer pump is installed on the pipeline connecting the output end of the black water collection tank and the input end of the wastewater processor. The input end of the first transfer pump is equipped with a first vacuum level detector, and the output end of the first transfer pump is equipped with a first pressure detector; and / or,

[0017] A second delivery pump is installed on the pipeline connecting the water output end of the wastewater treatment plant and the input end of the grey water collection chamber. A second vacuum level detector is installed at the input end of the second delivery pump, and a second pressure detector is installed at the output end of the second delivery pump; and / or,

[0018] A third delivery pump is installed on the pipeline connecting the output end of the grey water collection chamber and the input end of the primary filtration assembly. A third vacuum level detector is installed at the input end of the third delivery pump, and a third pressure detector is installed at the output end of the third delivery pump; and / or,

[0019] A fourth delivery pump is installed on the pipeline connecting the water output end of the primary filtration component and the input end of the secondary filtration component. A fourth vacuum level detector is installed at the input end of the fourth delivery pump, and a fourth pressure detector is installed at the output end of the fourth delivery pump; and / or,

[0020] A fifth delivery pump is installed on the pipeline connecting the output end of the water collection chamber and the water discharge outlet. A fifth vacuum detection device is installed at the input end of the fifth delivery pump, and a fifth pressure detection device is installed at the output end of the fifth delivery pump.

[0021] Polar vessels, including the aforementioned marine wastewater treatment systems.

[0022] The beneficial effects of this utility model are:

[0023] This utility model discloses a marine wastewater treatment system and a polar vessel. When the polar vessel is sailing in an area where wastewater discharge is prohibited, the wastewater in the black water collection tank is treated by a wastewater processor and then flows into the grey water collection tank. The wastewater in the grey water collection tank is filtered through a primary filter assembly and a secondary filter assembly before being transported to the clean water collection tank for collection.

[0024] When the polar vessel is operating in areas where wastewater discharge is not prohibited, the wastewater in the black water collection tank is either treated by a wastewater treatment unit before being discharged to the wastewater outlet, or collected in the grey water collection tank for further treatment. Similarly, the wastewater in the grey water collection tank is either discharged to the wastewater outlet or filtered sequentially through primary and secondary filtration components before being collected in the clean water collection tank. It is understood that when there is sufficient water in the clean water collection tank, it is preferable that the wastewater in the black water collection tank is treated by the wastewater treatment unit before being discharged to the wastewater outlet, and the wastewater in the grey water collection tank is discharged directly to the wastewater outlet. When there is less water in the clean water collection tank, it is preferable that the wastewater in the black water collection tank is treated by the wastewater treatment unit before being discharged to the grey water collection tank, where it is filtered sequentially through primary and secondary filtration components before being collected in the clean water collection tank for later use. This effectively improves the operational flexibility of the ship's wastewater treatment system.

[0025] Secondly, the ship's wastewater treatment system is equipped with a separate wastewater processor for black water. The wastewater processor can filter, settle, and disinfect the black water before outputting it to the wastewater discharge outlet or the grey water collection tank. For the treated black water being transported to the grey water collection tank, the wastewater entering the grey water collection tank will be filtered again by the primary and secondary filtration components before being collected in the clean water collection tank for later use, which can effectively improve the quality of wastewater treatment. The water in the clean water collection tank can be reused, thereby effectively saving freshwater resources.

[0026] Secondly, the water output end of the primary filtration module can be selectively connected to the input end of the grey water collection tank, allowing the wastewater filtered by the primary filtration module to be transported to the grey water collection tank for secondary filtration based on the filtration effect, thereby further improving the wastewater treatment quality. Furthermore, the wastewater filtered by the primary filtration module can also be transported to the grey water collection tank based on the area where the polar vessel is located, and then transported from the grey water collection tank to the wastewater discharge outlet for discharge, thereby further improving the operational flexibility of the marine wastewater treatment system.

[0027] Therefore, the ship's wastewater treatment system can selectively adjust the wastewater treatment method according to the region where the polar vessel is located, which is highly flexible in operation; secondly, the wastewater treatment quality of the ship's wastewater treatment system is high, and it can effectively save freshwater resources. Attached Figure Description

[0028] Figure 1 This is a partial principle of the marine wastewater treatment system provided in a specific embodiment of this utility model. Figure 1 ;

[0029] Figure 2 This is a partial principle of the marine wastewater treatment system provided in a specific embodiment of this utility model. Figure 2 .

[0030] In the picture:

[0031] 11. Black water collection tank; 12. Wastewater treatment unit;

[0032] 2. Grey water collection tank;

[0033] 3. Water purification collection chamber;

[0034] 41. Primary water filter; 42. Oil-sludge separator; 43. Air flotation dissolution processor; 44. Flocculant dosing device;

[0035] 51. First waste discharge pump; 52. Second waste discharge pump;

[0036] 6. Two-stage water filter;

[0037] 7. Sterilizer;

[0038] 81. pH dosing device; 82. First circulation pipe;

[0039] 1a. First delivery pump; 1b. First vacuum level detection device; 1c. First pressure detection device;

[0040] 2a. Second delivery pump; 2b. Second vacuum level detection device; 2c. Second pressure detection device;

[0041] 3a. Third delivery pump; 3b. Third vacuum level detection device; 3c. Third pressure detection device;

[0042] 4a. Fourth delivery pump; 4b. Fourth vacuum level detection device; 4c. Fourth pressure detection device;

[0043] 5a. Fifth delivery pump; 5b. Fifth vacuum level detection device; 5c. Fifth pressure detection device;

[0044] 1d, First shut-off valve; 2d, Second shut-off valve; 3d, Third shut-off valve; 4d, Fourth shut-off valve; 5d, Fifth shut-off valve; 6d, Sixth shut-off valve; 7d, Seventh shut-off valve; 8d, Eighth shut-off valve; 9d, Ninth shut-off valve; 10d, Tenth shut-off valve; 11d, Eleventh shut-off valve; 12d, Twelfth shut-off valve; 13d, Thirteenth shut-off valve; 14d, Fourteenth shut-off valve; 15d, Fifteenth shut-off valve;

[0045] 1e, First shut-off check valve; 2e, Second shut-off check valve; 3e, Third shut-off check valve; 4e, Fourth shut-off check valve; 5e, Fifth shut-off check valve; 6e, Sixth shut-off check valve; 7e, Seventh shut-off check valve; 8e, Eighth shut-off check valve; 9e, Ninth shut-off check valve;

[0046] 1f, First switching valve; 2f, Second switching valve;

[0047] 1g, flow meter; 2g, air filling tube; 3g, connecting tube; 4g, second circulation tube. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0049] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0052] This utility model provides a marine wastewater treatment system, such as Figure 1As shown, the shipboard wastewater treatment system includes a black water collection tank 11, a wastewater processor 12, a grey water collection tank 2, a primary filter assembly, a secondary filter assembly, and a clean water collection tank 3. The output of the black water collection tank 11 can be selectively connected to or disconnected from the input of the wastewater processor 12; the wastewater processor 12 is used to filter, settle, and disinfect the wastewater output from the black water collection tank 11; the output of the grey water collection tank 2 can be selectively connected to the input of the primary filter assembly or the wastewater discharge outlet, the water output of the primary filter assembly can be selectively connected to the input of the grey water collection tank 2 or the input of the secondary filter assembly, and the water output of the secondary filter assembly can be selectively connected to or disconnected from the clean water collection tank 3; the water output of the wastewater processor 12 can be selectively connected to the input of the grey water collection tank 2 or the wastewater discharge outlet; both the primary and secondary filter assemblies are used to filter the wastewater output from the grey water collection tank 2.

[0053] Take the application of this shipboard wastewater treatment system to polar vessels as an example.

[0054] When the polar vessel is sailing in an area where wastewater discharge is prohibited, the wastewater in the black water collection tank 11 is treated by the wastewater processor 12 and then flows into the grey water collection tank 2. The wastewater in the grey water collection tank 2 is filtered by the primary filter assembly and the secondary filter assembly and then transported to the clean water collection tank 3 for collection.

[0055] When the polar vessel is operating in areas where wastewater discharge is not prohibited, the wastewater in the black water collection tank 11 is controlled to flow to the wastewater discharge outlet after treatment by the wastewater treatment unit 12, or it is collected in the grey water collection tank 2 for further treatment. The wastewater in the grey water collection tank 2 is controlled to flow to the wastewater discharge outlet, or it is controlled to flow to the clean water collection tank 3 after being filtered by a primary filter and a secondary filter. It is understood that when there is sufficient water in the clean water collection tank 3, it is preferable that the wastewater in the black water collection tank 11 is treated by the wastewater treatment unit 12 and then discharged to the wastewater discharge outlet, while the wastewater in the grey water collection tank 2 flows to the wastewater discharge outlet. When there is less water in the clean water collection tank 3, it is preferable that the wastewater in the black water collection tank 11 is treated by the wastewater treatment unit 12 and then flows to the grey water collection tank 2. The wastewater in the grey water collection tank 2 is then filtered by a primary filter and a secondary filter and collected in the clean water collection tank 3 for later use. This effectively improves the operational flexibility of the ship's wastewater treatment system.

[0056] Secondly, the shipboard wastewater treatment system is equipped with a separate wastewater processor 12 for black water. The wastewater processor 12 can filter, settle, and disinfect the black water before outputting it to the wastewater discharge outlet or the grey water collection tank 2. For the treated black water being transported to the grey water collection tank 2, the wastewater entering the grey water collection tank 2 will be filtered again by the primary and secondary filtration components and then collected in the clean water collection tank 3 for later use, which can effectively improve the quality of wastewater treatment. The water in the clean water collection tank 3 can be reused, thereby effectively saving freshwater resources.

[0057] Secondly, the water output end of the primary filter component can be selectively connected to the input end of the grey water collection tank 2, so that the wastewater after filtration by the primary filter component can be transported to the grey water collection tank 2 for secondary filtration according to the filtration effect, thereby further improving the wastewater treatment quality. Furthermore, the wastewater after filtration by the primary filter component can also be transported to the grey water collection tank 2 according to the area where the polar vessel is located, and then transported by the grey water collection tank 2 to the wastewater discharge outlet for discharge, thereby further improving the operational flexibility of the marine wastewater treatment system.

[0058] Therefore, the ship's wastewater treatment system can selectively adjust the wastewater treatment method according to the region where the polar vessel is located, which is highly flexible in operation; secondly, the wastewater treatment quality of the ship's wastewater treatment system is high, and it can effectively save freshwater resources.

[0059] The working principle of the wastewater treatment unit 12 is as follows: sedimentation to remove large particles of waste residue from the black water → filtration of the black water → disinfection with chemicals. The specific structure of the wastewater treatment unit 12 is existing technology and will not be described in detail here.

[0060] Black water mainly refers to water flowing from toilets or urinals; grey water mainly refers to water flowing from washbasins and floor drains. The water collected in the clean water collection chamber 3 is mainly used for flushing toilets and cleaning the deck of polar vessels.

[0061] In this embodiment, as Figure 1 As shown, a first shut-off valve 1d and a first shut-off check valve 1e are provided on the pipeline connecting the output end of the black water collection chamber 11 and the input end of the wastewater treatment unit 12. This allows for selective connection or disconnection between the output end of the black water collection chamber 11 and the input end of the wastewater treatment unit 12, and prevents backflow of wastewater. In other embodiments, the first shut-off valve 1d and the first shut-off check valve 1e can be replaced with on / off valves, etc., as long as selective connection or disconnection between the output end of the black water collection chamber 11 and the input end of the wastewater treatment unit 12 is achieved.

[0062] In this embodiment, as Figure 1As shown, a first transfer pump 1a is installed on the pipeline connecting the output end of the black water collection tank 11 and the input end of the wastewater treatment unit 12. A first vacuum level detector 1b is installed at the input end of the first transfer pump 1a, and a first pressure detector 1c is installed at the output end of the first transfer pump 1a. By installing the first transfer pump 1a, wastewater from the black water collection tank 11 can be pumped into the wastewater treatment unit 12. By installing the first vacuum level detector 1b and the first pressure detector 1c, the normal operation of the marine wastewater treatment system can be monitored in real time, thereby improving the safety of the marine wastewater treatment system.

[0063] Furthermore, in this embodiment, as Figure 1 As shown, the first delivery pump 1a, the first vacuum detection element 1b, and the first pressure detection element 1c are all located between the first shut-off valve 1d and the first shut-off check valve 1e. This provides protection for the first delivery pump 1a, thereby extending its service life.

[0064] The marine wastewater treatment system also includes a waste residue buffer tank. The waste residue output end of the wastewater processor 12 can be selectively connected to or disconnected from the input end of the waste residue buffer tank. This allows the waste residue precipitated by the wastewater processor 12 to be discharged into the waste residue buffer tank in a timely manner. It can be understood that when the wastewater processor 12 is not discharging waste residue, the waste residue output end of the wastewater processor 12 is disconnected from the input end of the waste residue buffer tank.

[0065] Specifically, in this embodiment, a second shut-off valve 2d is provided on the pipeline connecting the waste residue output end of the wastewater treatment unit 12 and the input end of the waste residue buffer tank. Further, a first waste residue discharge pump 51 is provided on the pipeline connecting the waste residue output end of the wastewater treatment unit 12 and the input end of the waste residue buffer tank. This allows for the rapid and efficient discharge of waste residue into the waste residue buffer tank. Further, after the polar vessel travels through a non-prohibited discharge area, it discharges the waste residue from the waste residue buffer tank. Further, the second shut-off valve 2d is located on the pipeline connecting the waste residue output end of the wastewater treatment unit 12 and the input end of the first waste residue discharge pump 51. In other embodiments, the second shut-off valve 2d can be replaced with a switch valve, etc.

[0066] Among them, such as Figure 1 As shown, the primary filtration assembly includes a primary water filter 41, an oil-sludge separator 42, and an air flotation dissolution processor 43. The output end of the ash water collection chamber 2 can be selectively connected to the input end of the primary water filter 41 or the wastewater discharge outlet. The output end of the primary water filter 41 can be selectively connected to or disconnected from the input end of the oil-sludge separator 42. The water output end of the oil-sludge separator 42 is connected to the input end of the air flotation dissolution processor 43. The water output end of the air flotation dissolution processor 43 can be selectively connected to the input end of the ash water collection chamber 2 or the input end of the secondary filtration assembly.

[0067] Wastewater from the grey water collection tank 2 undergoes coarse filtration via a primary water filter 41, followed by fine filtration via an oil sludge separator 42 and an air flotation dissolution processor 43. The finely filtered wastewater can be selectively sent to the input end of the grey water collection tank 2 for secondary filtration or discharged through the wastewater discharge outlet, or selectively sent to a secondary filtration assembly for further filtration. This further improves the treatment quality of the ship's wastewater treatment system. The specific structures of the oil sludge separator 42 and the air flotation dissolution processor 43 are existing technologies and will not be described in detail here.

[0068] Specifically, such as Figure 1 As shown, the primary filtration assembly also includes a flocculant dosing device 44. The output end of the flocculant dosing device 44 is connected to the pipeline connecting the output end of the primary water filter 41 and the output end of the oil-sludge separator 42. The flocculant dosing device 44 is used to add flocculant to the wastewater flowing into the oil-sludge separator 42, so that the waste residue in the wastewater in the oil-sludge separator 42 can coagulate and precipitate. The specific structure of the flocculant dosing device 44 is prior art and will not be described in detail here.

[0069] Among them, such as Figure 1 and Figure 2 As shown, the secondary filtration assembly includes a secondary water filter 6, and the water output of the flotation dissolution processor 43 can be selectively connected to either the input of the grey water collection chamber 2 or the input of the secondary water filter 6. It is understood that when the water output of the flotation dissolution processor 43 is connected to the input of the secondary water filter 6, the wastewater can be further filtered.

[0070] Specifically, in this embodiment, the primary water filter 41 is a filter screen, and the secondary water filter 6 is a membrane filter. It is understood that the primary water filter 41 performs coarse filtration, and the secondary water filter 6 performs fine filtration. The water filtered by the secondary water filter 6 is essentially free of impurities. The specific structure of the membrane filter is prior art and will not be described in detail here. It is understood that the secondary water filter 6 can be replaced with other types of filters, as long as the filtered water is essentially free of impurities.

[0071] Specifically, in this embodiment, as Figure 1 As shown, a third shut-off valve 3d and a second shut-off check valve 2e are installed on the pipeline connecting the water output end of the wastewater treatment unit 12 and the input end of the grey water collection chamber 2. This allows for selective connection or disconnection between the water output end of the wastewater treatment unit 12 and the input end of the grey water collection chamber 2, and prevents backflow of wastewater. In other embodiments, the third shut-off valve 3d and the second shut-off check valve 2e can be replaced with on / off valves, etc., as long as selective connection or disconnection between the water output end of the wastewater treatment unit 12 and the input end of the grey water collection chamber 2 is achieved.

[0072] Furthermore, in this embodiment, as Figure 1 As shown, a second delivery pump 2a is installed on the pipeline connecting the water output end of the wastewater treatment unit 12 and the input end of the grey water collection tank 2. A second vacuum level detector 2b is installed at the input end of the second delivery pump 2a, and a second pressure detector 2c is installed at the output end of the second delivery pump 2a. By installing the second delivery pump 2a, wastewater from the wastewater treatment unit 12 can be pumped into the grey water collection tank 2. By installing the second vacuum level detector 2b and the second pressure detector 2c, the normal operation of the marine wastewater treatment system can be monitored in real time, thereby further improving the safety of the marine wastewater treatment system.

[0073] Furthermore, in this embodiment, as Figure 1 As shown, an exemplary arrangement includes two sets of third shut-off valves 3d and second shut-off check valves 2e. The first delivery pump 1a, the first vacuum level detector 1b, and the first pressure detector 1c are all located between the upstream set of third shut-off valves 3d and second shut-off check valves 2e. This arrangement protects the second delivery pump 2a, thereby extending its service life.

[0074] More specifically, in this embodiment, such as Figure 1 As shown, in the upstream set of a third shut-off valve 3d and a second shut-off check valve 2e, the output end of the second shut-off check valve 2e is also connected to the wastewater discharge port. This allows the wastewater treatment unit 12 to selectively discharge wastewater directly from the wastewater discharge port or transport it to the greywater collection chamber 2.

[0075] Specifically, in this embodiment, as Figure 1 As shown, a fourth shut-off valve 4d and a third shut-off check valve 3e are provided at the water output end of the greywater collection chamber 2 and the input end of the primary water filter 41. This allows for selective connection or disconnection between the water output end of the greywater collection chamber 2 and the input end of the primary water filter 41, and prevents backflow of wastewater. In other embodiments, the fourth shut-off valve 4d and the third shut-off check valve 3e can be replaced with on / off valves, etc., as long as selective connection or disconnection between the water output end of the greywater collection chamber 2 and the input end of the primary water filter 41 is achieved.

[0076] Furthermore, in this embodiment, as Figure 1As shown, a third transfer pump 3a is installed on the pipeline connecting the output end of the greywater collection tank 2 and the input end of the primary filter assembly. A third vacuum level detector 3b is installed at the input end of the third transfer pump 3a, and a third pressure detector 3c is installed at the output end of the third transfer pump 3a. In other words, a third transfer pump 3a is installed on the pipeline connecting the output end of the greywater collection tank 2 and the input end of the primary water filter 41. By installing the third transfer pump 3a, wastewater from the greywater collection tank 2 can be pumped to the primary filter assembly for treatment. By installing the third vacuum level detector 3b and the third pressure detector 3c, the normal operation of the marine wastewater treatment system can be monitored in real time, thereby improving the safety of the marine wastewater treatment system.

[0077] Furthermore, in this embodiment, as Figure 1 As shown, an exemplary configuration uses two fourth shut-off valves 4d. The third delivery pump 3a, the third vacuum sensor 3b, and the third pressure sensor 3c are all located between one of the fourth shut-off valves 4d and the third shut-off check valve 3e. This provides protection for the third delivery pump 3a, thereby extending its service life. The other fourth shut-off valve 4d is located downstream of the third shut-off check valve 3e.

[0078] Furthermore, in this embodiment, as Figure 1 As shown, a flow meter 1g is installed on the pipeline connecting the fourth shut-off valve 4d downstream of the third shut-off check valve 3e and the input end of the first-stage water filter 41.

[0079] Among them, such as Figure 1 As shown, the marine wastewater treatment system also includes a connecting pipe 3g, which connects the output end of the grey water collection tank 2 to the wastewater discharge outlet. In this embodiment, one end of the connecting pipe 3g is connected to the pipeline connecting the third shut-off check valve 3e and the fourth shut-off valve 4d downstream of the third shut-off check valve 3e, and the other end is connected to the pipeline connecting the upstream set of second shut-off check valves 2e and the third shut-off valve 3d and the downstream set of second shut-off check valves 2e and the third shut-off valve 3d. Further, the connecting pipe 3g is equipped with a fifteenth shut-off valve 15d, so that the grey water collection tank 2 can be selectively connected to or disconnected from the wastewater discharge outlet.

[0080] Specifically, in this embodiment, as Figure 1As shown, a fifth shut-off valve 5d and a fourth shut-off check valve 4e are installed on the pipeline connecting the water output end of the oil-sludge separator 42 and the input end of the air flotation dissolution processor 43. This allows for selective connection or disconnection between the water output end of the oil-sludge separator 42 and the output end of the air flotation dissolution processor 43, and prevents backflow of wastewater. In other embodiments, the fifth shut-off valve 5d and the fourth shut-off check valve 4e can be replaced with on / off valves, etc., as long as selective connection or disconnection between the water output end of the oil-sludge separator 42 and the input end of the air flotation dissolution processor 43 is achieved.

[0081] Specifically, such as Figure 1 As shown, the oil output end of the oil-sludge separator 42 can be connected to or disconnected from the oil collection tank via the sixth shut-off valve 6d, so that the oil from the separator can be discharged into the oil collection tank in a timely manner.

[0082] Specifically, such as Figure 1 As shown, the waste residue output end of the oil-sludge separator 42 can be selectively connected to or disconnected from the input end of the waste residue buffer chamber via the seventh shut-off valve 7d. Furthermore, a second waste residue discharge pump 52 is installed on the pipeline connecting the output end of the seventh shut-off valve 7d and the input end of the waste residue buffer chamber. This ensures that the waste residue separated by the oil-sludge separator 42 can be discharged into the waste residue buffer chamber in a timely manner.

[0083] Specifically, such as Figure 1 As shown, the marine wastewater treatment system also includes an air-filling pipe 2g, which is used to fill the air flotation dissolution processor 43 with air. In this embodiment, one end of the air-filling pipe 2g is connected to the pipeline connecting the fifth shut-off valve 5d and the fourth shut-off check valve 4e, and the other end can be selectively connected to an air-filling source, which can supply air to the air flotation dissolution processor 43. Further, in this embodiment, the air-filling pipe 2g is equipped with an eighth shut-off valve 8d and a fifth shut-off check valve 5e.

[0084] Specifically, such as Figure 1 As shown, the water drain port of the air flotation dissolution processor 43 is equipped with a first switch valve 1f. When maintaining this marine wastewater treatment system, the wastewater in the air flotation dissolution processor 43 can be directly drained by opening the first switch valve 1f.

[0085] Specifically, such as Figure 1 As shown, the sampling port of the air flotation dissolution processor 43 is equipped with a second switching valve 2f. This facilitates the testing of the wastewater treatment effect of the air flotation dissolution processor 43.

[0086] Specifically, in this embodiment, as Figure 1As shown, a ninth shut-off valve 9d and a sixth shut-off check valve 6e are installed on the pipeline connecting the water output end of the air flotation dissolution processor 43 and the input end of the secondary water filter 6. This allows for selective connection or disconnection between the water output end of the air flotation dissolution processor 43 and the input end of the secondary water filter 6, and prevents backflow of wastewater. In other embodiments, the ninth shut-off valve 9d and the sixth shut-off check valve 6e can be replaced with on / off valves, etc., as long as selective connection or disconnection between the water output end of the air flotation dissolution processor 43 and the input end of the secondary water filter 6 is achieved.

[0087] Furthermore, in this embodiment, as Figure 1 As shown, a fourth delivery pump 4a is installed on the pipeline connecting the water output end of the air flotation dissolution processor 43 and the input end of the secondary filter assembly. A fourth vacuum level detector 4b is installed at the input end of the fourth delivery pump 4a, and a fourth pressure detector 4c is installed at the output end of the fourth delivery pump 4a. In other words, a fourth delivery pump 4a is installed on the pipeline connecting the water output end of the air flotation dissolution processor 43 and the input end of the secondary water filter 6. By installing the fourth delivery pump 4a, the wastewater filtered by the primary filter assembly can be transported to the secondary filter assembly for further filtration. By installing the fourth vacuum level detector 4b and the fourth pressure detector 4c, the normal operation of the marine wastewater treatment system can be monitored in real time, thereby further improving the safety of the marine wastewater treatment system.

[0088] Furthermore, in this embodiment, as Figure 1 As shown, an exemplary configuration uses two ninth shut-off valves 9d. The fourth delivery pump 4a, the fourth vacuum sensor 4b, and the fourth pressure sensor 4c are all located between the sixth shut-off check valve 6e and one of the ninth shut-off valves 9d. This provides protection for the fourth delivery pump 4a, thereby extending its service life. The other ninth shut-off valve 9d is located downstream of the sixth shut-off check valve 6e.

[0089] Among them, such as Figure 1 As shown, the marine wastewater treatment system also includes a second circulation pipe 4g. In this embodiment, one end of the second circulation pipe 4g is connected to the pipeline between the sixth shut-off check valve 6e and the ninth shut-off valve 9d located downstream of the sixth shut-off check valve 6e, and the other end of the second circulation pipe 4g is connected to the pipeline connected to a set of third shut-off valves 3d and second shut-off check valves 2e located downstream. Further, the second circulation pipe 4g is equipped with a tenth shut-off valve 10d and a seventh shut-off check valve 7e. This arrangement allows the fourth transfer pump 4a to also transport the wastewater filtered by the primary filter assembly to the grey water collection tank 2, saving on the number of pumps required; secondly, it also enables the output end of the primary filter assembly to selectively connect to the input end of the grey water collection tank 2, and prevents backflow of wastewater.

[0090] Among them, such as Figure 2 As shown, the marine wastewater treatment system also includes a sterilizer 7. The water output of the secondary filtration unit can be selectively connected to or disconnected from the input of the sterilizer 7, and the output of the sterilizer 7 can be selectively connected to or disconnected from the input of the purified water collection tank 3. That is, the output of the secondary water filter 6 can be selectively connected to or disconnected from the input of the sterilizer 7, so that the water delivered to the purified water collection tank 3 can be disinfected.

[0091] Specifically, in this embodiment, the sterilizer 7 is an ultraviolet sterilizer, which enables the sterilization of water delivered to the purified water collection chamber 3. The specific structure of the ultraviolet sterilizer is prior art and will not be described in detail here.

[0092] Specifically, in this embodiment, as Figure 2 As shown, an eleventh shut-off valve 11d and an eighth shut-off check valve 8e are installed on the pipeline connecting the output end of the secondary water filter 6 and the input end of the sterilizer 7. This allows for selective connection or disconnection between the output end of the secondary water filter 6 and the input end of the sterilizer 7, and prevents backflow of filtered water. In other embodiments, the eleventh shut-off valve 11d and the eighth shut-off check valve 8e can be replaced with on / off valves, etc., as long as selective connection or disconnection between the output end of the secondary water filter 6 and the input end of the sterilizer 7 is achieved.

[0093] Specifically, in this embodiment, as Figure 2 As shown, a ninth check valve 9e is installed on the pipeline connecting the output end of the sterilizer 7 to the purified water collection chamber 3. This prevents the water after sterilization from flowing back.

[0094] Among them, such as Figure 2 As shown, the marine wastewater treatment system also includes a pH meter, a pH dosing device 81, and a first circulation pipe 82. The pH meter is installed in the purified water collection chamber 3 and is used to detect the pH value of the water in the purified water collection chamber 3. One end of the first circulation pipe 82 can be selectively connected to or disconnected from the output end of the purified water collection chamber 3, and the other end of the first circulation pipe 82 is connected to the output end of the secondary filter assembly. The output end of the pH dosing device 81 is connected between the two ends of the first circulation pipe 82. By adding chemicals into the first circulation pipe 82 and transporting the water in the purified water collection chamber 3 to the output end of the secondary water filter 6 through the first circulation pipe 82, the chemicals are mixed with the water in the first circulation pipe 82, and after being disinfected again by the sterilizer 7, they are transported to the purified water collection chamber 3 until the pH value of the water in the purified water collection chamber 3 is adjusted to meet the standard for use. The specific structure of the pH dosing device 81 is prior art and will not be described in detail here.

[0095] Specifically, in this embodiment, as Figure 2 As shown, the first circulation pipe 82 is equipped with a twelfth shut-off valve 12d.

[0096] Furthermore, in this embodiment, as Figure 2 As shown, a thirteenth shut-off valve 13d is installed on the pipeline connecting the output end of the water purification collection chamber 3 and the first circulation pipe 82.

[0097] Furthermore, in this embodiment, as Figure 2 As shown, a fifth delivery pump 5a is provided on the pipeline connecting the output end of the water collection chamber 3 and the water discharge outlet. A fifth vacuum detection element 5b is provided at the input end of the fifth delivery pump 5a, and a fifth pressure detection element 5c is provided at the output end of the fifth delivery pump 5a.

[0098] Furthermore, in this embodiment, a fourteenth shut-off valve 14d is provided on the pipeline connecting the output end of the purified water collection chamber 3 and the purified water discharge outlet. This allows purified water to be discharged as needed. Furthermore, the fourteenth shut-off valve 14d is located downstream of the fifth delivery pump 5a. One end of the first circulation pipe 82 is connected to the pipeline connecting the fourteenth shut-off valve 14d and the fifth delivery pump 5a, and the other end is connected to the pipeline connecting the secondary water filter 6 and the eleventh shut-off valve 11d. Furthermore, the purified water discharge outlet can be selectively connected to a toilet flushing pipeline, and selectively connected to a pipeline for cleaning the deck of a polar vessel, etc., so that the purified water discharged from the purified water collection chamber 3 can be used for flushing toilets, cleaning the deck of polar vessels, etc.

[0099] This invention also provides a polar vessel, including the aforementioned marine wastewater treatment system. By adopting the aforementioned marine wastewater treatment system, the operational performance and wastewater treatment quality of the polar vessel can be effectively improved, and freshwater resources can be effectively saved.

[0100] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A marine wastewater treatment system, characterized in that, include: The black water collection chamber (11) and the wastewater treatment unit (12) are provided. The output end of the black water collection chamber (11) can be selectively connected to or disconnected from the input end of the wastewater treatment unit (12). The wastewater treatment unit (12) is used to filter, settle and disinfect the wastewater output from the black water collection chamber (11). The system comprises a greywater collection chamber (2), a primary filter assembly, a secondary filter assembly, and a purified water collection chamber (3). The output end of the greywater collection chamber (2) can be selectively connected to the input end of the primary filter assembly or the wastewater discharge outlet. The water output end of the primary filter assembly can be selectively connected to the input end of the greywater collection chamber (2) or the input end of the secondary filter assembly. The water output end of the secondary filter assembly can be selectively connected to or disconnected from the purified water collection chamber (3). The water output end of the wastewater processor (12) can be selectively connected to the input end of the greywater collection chamber (2) or the wastewater discharge outlet. Both the primary filter assembly and the secondary filter assembly are used to filter the wastewater output from the greywater collection chamber (2).

2. The marine wastewater treatment system according to claim 1, characterized in that, The primary filtration assembly includes a primary water filter (41), an oil-sludge separator (42), and an air flotation dissolution processor (43). The output end of the ash water collection chamber (2) can be selectively connected to the input end of the primary water filter (41) or the wastewater discharge outlet. The output end of the primary water filter (41) is connected to the input end of the oil-sludge separator (42). The water output end of the oil-sludge separator (42) can be selectively connected to or disconnected from the input end of the air flotation dissolution processor (43). The water output end of the air flotation dissolution processor (43) can be selectively connected to the input end of the ash water collection chamber (2) or the input end of the secondary filtration assembly.

3. The marine wastewater treatment system according to claim 2, characterized in that, The primary filtration assembly also includes a flocculant dosing device (44), the output end of which is connected to the pipeline connecting the output end of the primary water filter (41) and the output end of the oil-sludge separator (42). The flocculant dosing device (44) is used to add flocculant to the wastewater flowing into the oil-sludge separator (42).

4. The marine wastewater treatment system according to claim 2, characterized in that, The marine wastewater treatment system also includes a waste residue buffer tank. The waste residue output end of the wastewater processor (12), the waste residue output end of the oil residue separator (42), and the waste residue output end of the air flotation dissolution processor (43) can all be selectively connected to or disconnected from the input end of the waste residue buffer tank.

5. The marine wastewater treatment system according to claim 2, characterized in that, The secondary filtration assembly includes a secondary water filter (6), and the water output end of the air flotation dissolution processor (43) can be selectively connected to the input end of the grey water collection chamber (2) or the input end of the secondary water filter (6).

6. The marine wastewater treatment system according to claim 5, characterized in that, The primary water filter (41) is a filter screen, and / or the secondary water filter (6) is a membrane filter.

7. The marine wastewater treatment system according to any one of claims 1-5, characterized in that, The marine wastewater treatment system also includes a sterilizer (7), the water output end of the secondary filter component can be selectively connected to or disconnected from the input end of the sterilizer (7), and the output end of the sterilizer (7) can be selectively connected to or disconnected from the input end of the purified water collection chamber (3).

8. The marine wastewater treatment system according to claim 7, characterized in that, The marine wastewater treatment system also includes a pH meter, a pH dosing device (81), and a first circulation pipe (82). The pH meter is installed in the water purification collection chamber (3) and is used to detect the pH value of the water in the water purification collection chamber (3). One end of the first circulation pipe (82) can be selectively connected to or disconnected from the output end of the water purification collection chamber (3). The other end of the first circulation pipe (82) is connected to the output end of the secondary filter assembly. The output end of the pH dosing device (81) is connected between the two ends of the first circulation pipe (82).

9. The marine wastewater treatment system according to any one of claims 1-5, characterized in that: A first delivery pump (1a) is provided on the pipeline connecting the output end of the black water collection chamber (11) and the input end of the sewage treatment unit (12). A first vacuum level detector (1b) is provided at the input end of the first delivery pump (1a), and a first pressure detector (1c) is provided at the output end of the first delivery pump (1a); and / or, A second delivery pump (2a) is provided on the pipeline connecting the water output end of the wastewater processor (12) and the input end of the grey water collection chamber (2). A second vacuum detection device (2b) is provided at the input end of the second delivery pump (2a), and a second pressure detection device (2c) is provided at the output end of the second delivery pump (2a); and / or, A third delivery pump (3a) is provided on the pipeline connecting the output end of the grey water collection chamber (2) and the input end of the primary filter assembly. A third vacuum level detector (3b) is provided at the input end of the third delivery pump (3a), and a third pressure detector (3c) is provided at the output end of the third delivery pump (3a); and / or, A fourth delivery pump (4a) is installed on the pipeline connecting the water output end of the primary filtration component and the input end of the secondary filtration component. A fourth vacuum level detector (4b) is installed at the input end of the fourth delivery pump (4a), and a fourth pressure detector (4c) is installed at the output end of the fourth delivery pump (4a); and / or, A fifth delivery pump (5a) is provided on the pipeline connecting the output end of the water collection chamber (3) and the water discharge outlet. A fifth vacuum detection device (5b) is provided at the input end of the fifth delivery pump (5a), and a fifth pressure detection device (5c) is provided at the output end of the fifth delivery pump (5a).

10. A polar vessel, characterized in that, Includes the marine wastewater treatment system as described in any one of claims 1-9.

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