A combined cabinet of a marine bilge water oil content monitoring and processing system

Abstract

The utility model discloses a kind of combined cabinet of marine bilge water oil separation monitoring processing system, including reaction cabinet air floatation cabinet, buffer cabinet, sand filter cabinet, sedimentation cabinet;Above-mentioned cabinet can provide polymerization reaction, air floatation separation, clean water buffer, sand filter, dross sedimentation function for bilge water respectively;The reaction cabinet upper end is connected with air floatation cabinet;The reaction cabinet side is sequentially connected with sedimentation cabinet, buffer cabinet and sand filter cabinet.The utility model structure is reasonable, compared with previous design, new design integrates reaction cabinet, air floatation cabinet, buffer cabinet, sand filter cabinet, sedimentation cabinet, and constitutes a whole combined cabinet.Revolution in internal and external structure design of combined cabinet, subsection isolation is carried out inside, internal connecting passage is designed between part cabinet body, multiple functional interfaces are reserved outside, improve product performance, occupy smaller space, maintenance is more convenient.

Description

Technical Field

[0001] This utility model relates to a combined cabinet for a marine bilge water and oil separation monitoring and processing system, belonging to the field of marine equipment technology. Background Technology

[0002] With increasingly stringent international and domestic standards for ship bilge water discharge, various treatment methods are gradually being applied to ships to varying degrees, such as separators, membranes, and air flotation. Air flotation is beginning to be favored and adopted by many ship owners.

[0003] Although air flotation is gradually being applied on ships, the current bilge water treatment systems have some intermediate process treatment cabinets that are relatively independent and scattered, occupying a large space. The structural piping of some components is inconvenient, with many connecting pipes, and the functions are relatively incomplete, etc.

[0004] Based on the above, we have invented a combined cabinet for a marine bilge water and oil separation monitoring and treatment system. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a combined cabinet for a marine bilge water and oil separation monitoring and treatment system, thereby solving the aforementioned technical problems.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a combined cabinet for a marine bilge water oil separation monitoring and treatment system, comprising a reaction cabinet, an air flotation cabinet, a buffer cabinet, a sand filter cabinet, and a sedimentation cabinet; the cabinets can provide polymerization reaction, air flotation separation, clear water buffering, sand filtration, and scum sedimentation functions for bilge water respectively; the upper end of the reaction cabinet is connected to the air flotation cabinet; the sedimentation cabinet, buffer cabinet, and sand filter cabinet are sequentially connected to one side of the reaction cabinet.

[0007] Furthermore, the reactor cabinet has multiple external interfaces, including a bilge water inlet, a flocculant PAC solution inlet, a dissolved gas inlet, and a vent. The reactor cabinet is equipped with a baffle for flow guidance. A dissolved gas release device is installed at the dissolved gas inlet for dissolved gas release.

[0008] Furthermore, the air flotation tank is equipped with multiple baffle structures for flow guidance, which facilitates air flotation separation and can ultimately separate the treated water into scum and clear water. A remote control valve is installed between the air flotation tank and the buffer tank, which is used to control the overflow water from the air flotation tank into the buffer tank at regular intervals. The program can be used to control the forced discharge of scum from the air flotation tank in stages.

[0009] Furthermore, the buffer tank is divided into a clear water compartment and a wastewater compartment; the clear water compartment is used for clear water buffering after air flotation, and the wastewater compartment is used for wastewater buffering after backwashing.

[0010] The clean water flowing from the flotation tank enters the clean water compartment of the buffer tank for buffering, and then flows into the sand filter tank from the overflow outlet at the top of the buffer tank. The clean water at the bottom of the buffer tank is used for the production of dissolved air and is transported to an additional dissolved air tank to form dissolved air for flotation separation.

[0011] The buffer cabinet is equipped with high and low liquid level switches, which correspond to high and low liquid level alarms respectively. The low liquid level prompts the addition of water, and the high liquid level prompts the drainage.

[0012] Furthermore, the sand filter cabinet adopts a double-layer filter media filtration system, with anthracite as the upper layer and quartz sand as the lower layer. The upper layer of filter media acts as a coarse filter, while the lower layer acts as a fine filter. A filter is installed at the internal outlet of the sand filter cabinet to ensure that quartz and anthracite particles do not flow into the clean water outlet pipe. This filter is a backwash filter, which consists of a filter element and a protective sleeve. The number of filters is set according to the flow rate.

[0013] The sand filter cabinet is equipped with high and low liquid level switches. Pumping is started when the liquid level is high and stopped when the liquid level is low. The liquid level switch is a tuning fork liquid level switch.

[0014] The sand filter cabinet is equipped with a water flow baffle structure to guide the flow and avoid the generation of impact force. The filter media will not be stirred up by the impact of falling water, and the sludge and water can be discharged under pressure during backwashing.

[0015] Furthermore, the settling tank is equipped with a turbidity meter to facilitate the forced slag discharge control of the settling tank. When the turbidity is low, the slag settles normally, and when the turbidity is high, forced slag discharge is performed to force the concentrated slag at the bottom to be discharged into the ship's slag bin.

[0016] The oil and scum at the top of the settling tank can flow directly to the ship's slag bin through the first overflow port at the top.

[0017] The clean water in the upper part of the sedimentation tank can flow directly to the ship's venting tank through the second overflow port at the top for further recycling.

[0018] Furthermore, the buffer cabinet, sand filter cabinet, and sedimentation cabinet are equipped with vents that can be directly connected through pipelines to allow air to pass through to the outside of the ship's cabin.

[0019] The reaction cabinet, flotation cabinet, buffer cabinet, sand filter cabinet, and sedimentation cabinet are all equipped with manholes or handholes for construction, maintenance, and cleaning.

[0020] The reaction cabinet, flotation cabinet, buffer cabinet, sand filter cabinet, and sedimentation cabinet are all equipped with sampling ports. By opening the valves, samples can be taken, the processing results of each stage can be viewed, and sample analysis can be performed.

[0021] Furthermore, the bottom of the buffer cabinet and sedimentation cabinet is inclined, and their discharge pipes are located at the bottom of the inclined surface.

[0022] The beneficial effects of this utility model are as follows: The invention has a reasonable structure. Compared with previous designs, the new design integrates the reaction cabinet, flotation cabinet, buffer cabinet, sand filter cabinet, and sedimentation cabinet into a single integrated unit. The internal and external structural design of the integrated unit is innovative, with internal segmentation and isolation, internal connection channels between some cabinet sections, and multiple functional interfaces reserved externally. This improves product performance, occupies less space, and makes maintenance more convenient. Attached Figure Description

[0023] Figure 1 This is an overall structural outline of the combined cabinet of the marine bilge water and oil separation monitoring and treatment system of this utility model.

[0024] Figure 2 This utility model presents a combined cabinet for a marine bilge water and oil separation monitoring and treatment system and a flowchart illustrating the working principle of the entire system.

[0025] Figure 3 This is a schematic diagram of the structure and functional flow of the combined cabinet of the marine bilge water and oil separation monitoring and treatment system of this utility model.

[0026] In the diagram: 1. Reactor cabinet, 2. Flotation cabinet, 3. Buffer cabinet, 4. Sand filter cabinet, 5. Sedimentation cabinet. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0029] Reference Figure 1 The main structure of the combined cabinet for the ship's bilge water and oil separation monitoring and treatment system is described below.

[0030] The combined cabinet of the bilge water oil separation monitoring and treatment system is part of the bilge water oil separation monitoring and treatment system. It consists of a reaction cabinet 1, an air flotation cabinet 2, a buffer cabinet 3, a sand filter cabinet 4, and a sedimentation cabinet 5, forming an integrated combined cabinet. It can provide polymerization reaction, air flotation separation, clear water buffering, sand filtration, and scum sedimentation functions for bilge water, ensuring the normal treatment of bilge water during the circulation process.

[0031] This invention features a rational structure. Compared to previous designs, the new design integrates the reaction cabinet 1, flotation cabinet 2, buffer cabinet 3, sand filter cabinet 4, and sedimentation cabinet 5 into a single integrated unit. The internal and external structural design of the integrated unit is innovative, with internal segmentation and isolation, internal connection channels between some cabinet sections, and multiple functional interfaces reserved externally. This improves product performance, occupies less space, and facilitates maintenance.

[0032] Reference Figure 2 , Figure 3 The specific working principle is as follows: Polymerization reaction process: The reactor 1 has external interfaces, such as bilge water inlet, flocculant PAC solution inlet, dissolved gas inlet, and vent. An internal partition structure is added to guide the flow and facilitate the polymerization reaction of bilge water.

[0033] The bilge water contains a lot of oil and carbon compounds. The bilge water and flocculant PAC solution entering the reaction tank 1 undergo a polymerization reaction under the driving force of the system's mixing force. Within the inherent limited time of liquid rise, flocculents are gradually formed, and then the oil and flocculents gradually flow into the rising space.

[0034] The dissolved gas inlet is equipped with a dissolved gas release device to facilitate the release of dissolved gas.

[0035] The dissolved gas entering the reaction chamber 1 is dispersed to various corners of the reaction chamber 1 by the internal pipes. After the dissolved gas comes into contact with the oil and flocculent matter, it will be adsorbed onto the oil and flocculent matter, and then slowly rise into the flotation chamber 2 along with the oil and flocculent matter.

[0036] Air flotation separation process: The air flotation unit 2 has multiple baffles inside to guide the flow and facilitate air flotation separation, which can ultimately separate the treated water into foam and clear water.

[0037] The oil and flocculent matter from reaction tank 1 will eventually form foam and scum after being subjected to air flotation. After being separated by air flotation in the internal structure of the air flotation tank, the foam and scum are discharged to sedimentation tank 5 for sedimentation.

[0038] Meanwhile, after separation, the water slowly flows from the flotation tank 2 into the buffer tank 3. Along the way, it passes through a remote control valve that can control the forced discharge of scum. This allows the overflow water from the flotation tank 1 to be controlled to enter the buffer tank 2 at regular intervals. The program is used to control the forced discharge of foam and scum from the flotation tank 2 in stages.

[0039] Clear water buffer process: The buffer tank is divided into a clear water compartment and a wastewater compartment. The clear water compartment is used for buffering clear water after air flotation, and the wastewater compartment is used for buffering wastewater after backwashing.

[0040] The clean water flowing in from the flotation tank 2 enters the clean water compartment of the buffer tank 3 for buffering, and then flows into the sand filter tank 4 from the overflow outlet at the top. The clean water at the bottom is used as clean water for the production of dissolved air and is transported to an additional dissolved air tank to form dissolved air for use in flotation separation, thus forming a new cycle.

[0041] The buffer tank 3 is equipped with high and low liquid level switches, which correspond to high and low liquid level alarms respectively. The low liquid level prompts the replenishment of water, and the high liquid level prompts the drainage.

[0042] During backwashing of sand filter 4, clean water from the clean water compartment of buffer tank 3 is used to backwash the filter media in sand filter 4. Fine flocculent matter in the filter media is flushed out by the backwash water, thus backwashing the wastewater into the wastewater compartment of buffer tank 3. After backwashing, the wastewater in the wastewater compartment is isolated and settled. Before the next backwash, the wastewater in the wastewater compartment of buffer tank 3 is discharged into the ship's venting tank. During the next backwash, the water in the clean water compartment of sand filter 4 will again be flushed into the wastewater compartment of buffer tank 3 for sedimentation and discharge, thus completing the cycle.

[0043] Sand filtration process: The clear water overflows from the clear water compartment of buffer tank 3 into sand filter tank 4 for filtration. It passes through the intermediate baffle structure and then flows down into the filter media.

[0044] Sand filter cabinet 4 contains quartz stone, anthracite, and a filter. Sand filter cabinet 4 uses a double-layer filter media system: the upper layer is anthracite, and the lower layer is quartz sand. The upper layer acts as a coarse filter, while the lower layer acts as a fine filter.

[0045] The filter at the internal outlet of the sand filter cabinet 4 ensures that quartz and anthracite particles do not flow into the clean water outlet pipe, so as not to damage the downstream power components.

[0046] Because a small amount of fine flocculent matter will be present in the clean water, it will be adsorbed by quartz and anthracite, thus ensuring that the turbidity and oil content of the clean water flowing out of the sand filter cabinet 4 can meet the design requirements and discharge requirements.

[0047] The sand filter cabinet 4 is equipped with high and low liquid level switches. Pumping is started when the liquid level is high and stopped when the liquid level is low.

[0048] Clear water that meets the standards for turbidity and oil content will be discharged overboard the ship.

[0049] Water that fails to meet the standards for turbidity and oil content will be converted and discharged back into the ship's venting tank for further treatment until it meets the standards before being discharged overboard.

[0050] Sand filter 4 will backwash the filter media periodically. If the turbidity or oil content of the clean water outlet of sand filter 4 is not up to standard, forced backwashing of the filter media can also be performed. The backwashing steps are as follows: During backwashing of sand filter 4, clean water from the clean water compartment of buffer tank 3 is used to backwash the filter media in sand filter 4. Fine flocculent matter in the filter media is flushed out by the backwash water, thus backwashing the wastewater into the wastewater compartment of buffer tank 3. After backwashing, the wastewater in the wastewater compartment is isolated and settled. Before the next backwash, the wastewater in the wastewater compartment of buffer tank 3 is discharged into the ship's venting tank. During the next backwash, the water in the clean water compartment of sand filter 4 will again be flushed into the wastewater compartment of buffer tank 3 for sedimentation and discharge, thus completing the cycle.

[0051] Scum sedimentation process: The foam and scum from the reaction tank 1 are separated by air flotation in the internal structure of the air flotation tank 2, and then discharged to the sedimentation tank 5 for gravity sedimentation.

[0052] Settling tank 5 is equipped with a turbidity meter to facilitate forced slag discharge control. When the turbidity is low, the scum settles normally. When the turbidity is high, forced slag discharge is implemented to force the concentrated scum at the bottom to the ship's slag hold.

[0053] The oil and scum at the top of sedimentation tank 5 can flow directly to the ship's slag bin through the first overflow port at the top.

[0054] The clean water in the upper part of the settling tank 5 can flow directly to the ship's venting tank through the second overflow port at the top for recirculation treatment.

[0055] In this modular cabinet system, buffer cabinet 3, sand filter cabinet 4, and sedimentation cabinet 5 are equipped with vents that can be directly connected via pipelines to allow ventilation to the outside of the ship's hold. Reactor cabinet 1, flotation cabinet 2, buffer cabinet 3, sand filter cabinet 4, and sedimentation cabinet 5 are all equipped with manholes or handholes for easy construction, maintenance, and cleaning. Each of these cabinets also has a sampling port; opening the valve allows for sampling, viewing the processing results at each stage, and sample analysis.

[0056] The purpose of this invention is to integrate five non-pressure-resistant treatment cabinets used in bilge water treatment into a single, integrated cabinet. These integrated cabinets are then isolated internally to allow each function to operate normally. This allows all treatment functions to continue operating normally while maintaining closer interoperability, reducing the number of connecting pipes between cabinets, and resulting in a more aesthetically pleasing design. It also solves the problems of multiple treatment cabinets being scattered, disorganized, and requiring significant space.

[0057] This invention features a rational structure. Compared to previous designs, the new design integrates the reaction cabinet 1, flotation cabinet 2, buffer cabinet 3, sand filter cabinet 4, and sedimentation cabinet 5 into a single integrated unit. The internal and external structural design of the integrated unit is innovative, with internal segmentation and isolation, and internal connection channels between some cabinets. Multiple functional interfaces are reserved externally, improving product performance, reducing space occupation, and facilitating maintenance. Details are as follows: The reactor 1 has external interfaces, such as bilge water inlet, PAC flocculant solution inlet, dissolved gas inlet, and vent. An internal partition structure is added to guide the flow and facilitate the reaction of bilge water. After the dissolved gas enters the reactor 1, it will adhere to the oil and flocculent matter, causing the oil and flocculent matter to slowly float to the surface and go to the flotation tank 2 for separation. The oil and scum are separated and enter the sedimentation tank 5. At the same time, the clear water is separated and slowly flows into the buffer tank 3.

[0058] Because the slag discharge of buffer tank 3 and sedimentation tank 5 relies on gravity discharge, and the bottom of the discharge tank is usually flat, incomplete slag discharge may occur. The newly designed buffer tank 3 and sedimentation tank 5 are modified to have an inclined bottom, converging into a single gravity discharge path, and the discharge pipeline is located at the bottom layer, ensuring that the slag inside the tank is completely emptied without any residue, and ensuring that it will not affect subsequent recycling and maintenance.

[0059] In the past, the overflow water from the flotation tank was designed to flow directly into the buffer tank without any separation. This made it impossible to preemptively remove scum in stages when the bilge water was particularly dirty. In our new design, we added a remote control valve to control the overflow water from the flotation tank 2 into the buffer tank 3 at regular intervals. The flotation tank 2 can also be programmed to force the removal of scum in stages.

[0060] Typical sand filter cabinets are direct-flow type because the internal filter media, consisting of tiny granular quartz and anthracite, are easily agitated by water flow. The newly designed sand filter cabinet 4 incorporates a water flow baffle structure for guidance, allowing the water to flow evenly and dispersed within the cabinet without generating impact force, preventing the filter media from being agitated by the falling water. The internal baffle also serves to allow for pressurized discharge of the sludge and wastewater during backwashing.

[0061] Traditional sand filter cabinets typically use general-purpose filters for both inlet and outlet water filtration. These filters are small and insufficient in length, hindering the flushing of media with a large internal cross-sectional area. The newly designed sand filter cabinet 4 uses a custom-designed backwash filter, consisting of a filter element and a protective sleeve. Multiple filters are configured according to flow rate, increasing the outlet water flow and flushing area. This ensures the sealing and reliability of each filter, preventing quartz and anthracite particles from flowing into the clean water outlet pipe. Furthermore, the filters can be disassembled from the inside, making manual operation and maintenance safer, more reliable, and easier.

[0062] Liquid level switches typically use mechanical float switches. While inexpensive, float-type liquid level switches are prone to malfunction due to sand falling into them, causing them to lose their operation and alarm functions. In the new design, the liquid level switch for sand filter cabinet 4 will use a tuning fork liquid level switch, which is more sensitive and unaffected by actual sand falling or mechanical failure. As long as liquid comes into contact with the two tuning forks, an on / off signal is generated, providing a judgment, making it safer and more reliable.

[0063] In summary, our new design has improved the functionality of the combined cabinet for the ship's bilge water and oil separation monitoring and treatment system in all aspects, and we look forward to the early achievement of carbon peaking, carbon neutrality and the emission control targets of the International Maritime Organization.

[0064] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A combined cabinet for a marine bilge water and oil separation monitoring and treatment system, characterized in that, It includes a reaction tank (1), an air flotation tank (2), a buffer tank (3), a sand filter tank (4), and a sedimentation tank (5); the above tanks can provide polymerization reaction, air flotation separation, clear water buffering, sand filtration, and scum sedimentation functions for bilge water respectively; the upper end of the reaction tank (1) is connected to the air flotation tank (2); the sedimentation tank (5), the buffer tank (3), and the sand filter tank (4) are connected in sequence on one side of the reaction tank (1).

2. The combined cabinet of a marine bilge water and oil separation monitoring and treatment system according to claim 1, characterized in that, The reaction cabinet (1) has multiple interfaces on the outside, including a bilge water inlet, a flocculant PAC solution inlet, a dissolved gas inlet, and a vent. The reaction cabinet (1) is equipped with a partition for flow guidance. A dissolved gas release device is provided at the dissolved gas inlet for dissolved gas release.

3. The combined cabinet of a marine bilge water and oil separation monitoring and treatment system according to claim 1, characterized in that, The air flotation tank (2) is equipped with multiple baffle structures for flow guidance, which facilitates air flotation separation. Ultimately, the treated water can be separated into scum and clear water. A remote control valve is installed between the air flotation tank (2) and the buffer tank (3) to control the overflow water of the air flotation tank (2) into the buffer tank (3) at regular intervals. The program can be used to control the forced discharge of scum from the air flotation tank (2) in stages.

4. The combined cabinet of a marine bilge water and oil separation monitoring and treatment system according to claim 1, characterized in that, The buffer tank (3) is divided into a clear water compartment and a sewage compartment; the clear water compartment is used for clear water buffering after air flotation, and the sewage compartment is used for sewage buffering after backwashing. The clean water flowing from the flotation tank (2) enters the clean water compartment of the buffer tank (3) for buffering, and then flows from the overflow outlet at the top of the buffer tank (3) into the sand filter tank (4). The clean water at the bottom of the buffer tank (3) is used for the production of dissolved air and is transported to an additional dissolved air tank to form dissolved air for flotation separation. The buffer cabinet (3) is equipped with high and low liquid level switches, which correspond to high and low liquid level alarms respectively. The low liquid level prompts water replenishment, and the high liquid level prompts drainage.

5. The combined cabinet of a marine bilge water and oil separation monitoring and treatment system according to claim 1, characterized in that, The sand filter cabinet (4) adopts a double-layer filter media filtration. The upper layer is anthracite and the lower layer is quartz sand. The upper layer of filter media plays a coarse filtration role, and the lower layer of filter media plays a fine filtration role. A filter is installed at the water outlet inside the sand filter cabinet (4) to ensure that quartz stone and anthracite particles do not flow into the clean water outlet pipe. The filter is a backwash filter, which consists of a filter element and a protective sleeve. The number of filters is set according to the flow rate. The sand filter cabinet (4) is equipped with high and low liquid level switches. The pumping is started when the liquid level is high and stopped when the liquid level is low. The liquid level switch is a tuning fork liquid level switch. The sand filter cabinet (4) is equipped with a water flow baffle structure to guide the flow and avoid the generation of impact force. The filter material will not be splashed by the impact of falling water, and the sludge and water can be discharged under pressure during backwashing.

6. The combined cabinet of a marine bilge water and oil separation monitoring and treatment system according to claim 1, characterized in that, The settling tank (5) is equipped with a turbidity meter, which facilitates the forced slag discharge control of the settling tank (5). When the turbidity is low, the slag settles normally. When the turbidity is high, forced slag discharge is performed to force the concentrated slag at the bottom to be discharged into the ship's slag bin. The oil and scum at the top of the settling tank (5) can flow directly to the ship's slag bin through the first overflow port at the top; The clear water in the upper part of the sedimentation tank (5) can flow directly to the ship's venting tank through the second overflow port at the top for recirculation treatment.

7. The combined cabinet of a marine bilge water and oil separation monitoring and treatment system according to claim 1, characterized in that, The buffer cabinet (3), sand filter cabinet (4), and sedimentation cabinet (5) are equipped with vents, which can be directly connected through pipelines to allow air to pass through to the outside of the ship's cabin; The reaction cabinet (1), flotation cabinet (2), buffer cabinet (3), sand filter cabinet (4), and sedimentation cabinet (5) are all equipped with manholes or handholes for construction, maintenance, and cleaning. The reaction cabinet (1), flotation cabinet (2), buffer cabinet (3), sand filter cabinet (4), and sedimentation cabinet (5) are all equipped with sampling ports. By opening the valve, samples can be taken, the processing results of each step can be viewed, and sample analysis can be performed.

8. The combined cabinet of a marine bilge water and oil separation monitoring and treatment system according to claim 1, characterized in that, The bottom of the buffer cabinet (3) and the sedimentation cabinet (5) are inclined, and their discharge pipes are located at the bottom of the inclined surface.

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