A marine sewage treatment device

Abstract

This utility model discloses a marine sewage treatment device, comprising an equalization tank, an anaerobic tank, an aerobic tank, and an MBR tank connected sequentially from left to right via an overflow pipe. An inclined filter frame is installed on the top surface of the equalization tank, and a collection box is installed on the left side surface of the equalization tank relative to the bottom end of the inclined filter frame. This utility model improves upon existing marine sewage treatment devices by designing an inclined filter frame and a corresponding collection box at the front end of the device, above the equalization tank. This allows large-volume waste and solid waste in the marine sewage to be filtered out and collected in the collection box before falling into the equalization tank, preventing these large-volume waste and solid waste from directly falling into the equalization tank and affecting the normal treatment of subsequent sewage. This ensures the stable operation of the entire marine sewage treatment device and avoids blockages and other disruptions.

Description

Technical Field

[0001] This utility model belongs to the field of sewage treatment technology, specifically relating to a marine sewage treatment device. Background Technology

[0002] Marine sewage treatment equipment is a device used on large ships to treat domestic sewage from crew members. The marine environment requires the sewage treatment equipment to be low in energy consumption and low in noise. Marine sewage treatment equipment generally consists of an equalization tank, an anaerobic tank, an aerobic tank, an MBR tank, a return system, an aeration system, and an electrical control box. The anoxic tank, aerobic tank, and MBR tank are all equipped with online dissolved oxygen concentration sensors. The dissolved oxygen signal is collected in real time by a PLC. The PLC compares the collected dissolved oxygen concentration signal with the set dissolved oxygen concentration threshold value. When the dissolved oxygen concentration in a tank is lower than the lower limit, the air pump is started to oxygenate. When the dissolved oxygen concentration is higher than the upper limit, the air pump is stopped. This can effectively avoid high energy consumption and noise caused by over-oxygenation and meet the requirements of low energy consumption and low noise in the marine environment.

[0003] In existing marine sewage treatment devices, the sewage falls directly into the equalization tank by gravity for a series of treatments. However, since there is no structure above the equalization tank to filter large-volume waste and solid waste in the sewage, some of these wastes fall directly into the equalization tank, hindering the normal treatment of the sewage and causing drawbacks. Therefore, this invention aims to improve and optimize the existing marine sewage treatment device. Utility Model Content

[0004] The purpose of this invention is to provide a marine sewage treatment device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a marine sewage treatment device, comprising...

[0006] From left to right, the equalization tank, anaerobic tank, aerobic tank, and MBR tank are connected by an overflow pipe. A sewage pump is connected to the right side of the MBR tank via a pipe. Aeration pipes are installed at the bottom inner side of the anaerobic tank, aerobic tank, and MBR tank, and the aeration pipes are connected to an air pump via pipes. Online dissolved oxygen concentration sensors are installed inside the anaerobic tank, aerobic tank, and MBR tank, and the online dissolved oxygen concentration sensors are connected to the PLC control cabinet above.

[0007] An inclined filter frame is provided on the top surface of the regulating tank, and a collection box is installed on the left side surface of the regulating tank relative to the bottom end of the inclined filter frame.

[0008] Preferably, the inclined filter frame includes two support columns fixed to the top surface of the regulating tank, an inclined filter plate fixed between the two support columns, a strip-shaped notch opened on the surface of the inclined filter plate, and multiple guide rollers rotatably installed in the strip-shaped notch.

[0009] Preferably, a tray is fixed to the left side surface of the regulating pool, and a collection box is installed on the top surface of the tray.

[0010] Preferably, a strip-shaped bottom slider is fixed to the bottom surface of the collection box, and a strip-shaped sliding opening corresponding to the strip-shaped bottom slider is opened on the surface of the tray. The strip-shaped bottom slider slides into the strip-shaped sliding opening, and a retaining plate is movably installed on the bottom surface of the strip-shaped bottom slider, with the right end of the retaining plate being engaged with the bottom surface of the tray.

[0011] Preferably, a base rod is fixed to the bottom surface of the strip-shaped bottom slider, and a base plate is fixed to the bottom surface of the base rod. The left end of the card plate is movably sleeved on the surface of the base rod. A spring is also sleeved between the surface of the base rod and the card plate and the base plate. A rectangular card block is fixed to the top right end of the card plate, and a rectangular bottom groove corresponding to the rectangular card block is opened on the bottom surface of the support plate. The rectangular card block is inserted into the rectangular bottom groove.

[0012] Preferably, the bottom end of the spring abuts against the top surface of the base plate, and the top end of the spring abuts against the bottom surface of the card plate.

[0013] Preferably, side levers are fixed on both sides of the card plate.

[0014] Preferably, the surface of the card plate has a through hole corresponding to the base rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model improves the existing marine sewage treatment device by designing an inclined filter frame and a corresponding collection box at the front end of the device, above the equalization tank. This allows large-volume waste and solid waste in the sewage to be filtered out and collected in the collection box before falling into the equalization tank. This prevents these large-volume waste and solid waste from falling directly into the equalization tank and affecting the normal treatment of subsequent sewage, thereby ensuring the stable operation of the entire marine sewage treatment device and avoiding blockages and impacts. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A magnified view of a portion of region A in the middle;

[0018] Figure 3 This utility model Figure 2 A magnified view of a portion of region B in the middle;

[0019] In the diagram: 1. Equalization tank; 11. Support plate; 12. Strip sliding port; 13. Rectangular bottom trough; 2. Anaerobic tank; 3. Aerobic tank; 4. MBR tank; 5. Air pump; 51. Aeration pipe; 6. Sewage pump; 7. PLC control cabinet; 71. Online dissolved oxygen concentration sensor; 8. Inclined filter frame; 81. Support column; 82. Inclined filter plate; 83. Strip notch; 84. Guide roller; 9. Collection box; 91. Strip bottom slider; 92. Bottom base rod; 93. Bottom base plate; 94. Spring; 95. Clamping plate; 96. Rectangular clamping block; 97. Side lever block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example

[0022] Please see Figures 1 to 3 This is an embodiment of the present utility model, which provides a technical solution: a marine sewage treatment device, comprising...

[0023] From left to right, the wastewater is connected to equalization tank 1, anaerobic tank 2, aerobic tank 3, and MBR tank 4 via overflow pipes. A sewage pump 6 is connected to the right side of MBR tank 4 via a pipe. Wastewater flows into equalization tank 1 by gravity, overflows into anaerobic tank 2, aerobic tank 3, and MBR tank 4, and is finally pumped out by sewage pump 6, disinfected by ultraviolet light, and discharged. This process allows organic matter in the wastewater to undergo anaerobic and aerobic decomposition, ammonia nitrogen to be nitrified in aerobic tank 3 and then returned to anaerobic tank 2 for denitrification via a return pump, and dissolved phosphorus in the wastewater to be released from the anaerobic environment of equalization tank 1 into the aerobic environment. Phosphorus adsorption in tank 3 is ultimately removed in the form of settled sludge. Aeration pipes 51 are installed at the bottom inner side of anaerobic tank 2, aerobic tank 3, and MBR tank 4. The aeration pipes 51 are connected to air pump 5 through pipes. Online dissolved oxygen concentration sensors 71 are installed on the inner side of anaerobic tank 2, aerobic tank 3, and MBR tank 4. The online dissolved oxygen concentration sensor 71 is model WX-S8 and is connected to the PLC control cabinet 7 above. It can detect the dissolved oxygen concentration in anaerobic tank 2, aerobic tank 3, and MBR tank 4 in real time.

[0024] An inclined filter frame 8 is installed on the top surface of the equalization tank 1, and a collection box 9 is installed on the left side surface of the equalization tank 1 relative to the bottom of the inclined filter frame 8. This allows the ship's domestic sewage to be filtered by the inclined filter frame 8 before falling into the equalization tank 1, so that large-volume waste and solid waste in the ship's domestic sewage can be filtered out and fall into the collection box 9 for collection. This prevents these large-volume waste and solid waste in the ship's domestic sewage from falling directly into the equalization tank 1 and affecting the normal treatment of subsequent sewage.

[0025] The inclined filter frame 8 includes two support columns 81 welded and fixed to the top surface of the equalization tank 1, an inclined filter plate 82 welded and fixed between the two support columns 81, a strip-shaped notch 83 opened on the surface of the inclined filter plate 82, and multiple guide rollers 84 installed in the strip-shaped notch 83 by rotating a shaft. This allows large-volume waste and solid waste in the sewage to be intercepted by the guide rollers 84 when it falls onto the surface of the inclined filter frame 8. Under the action of gravity, the waste rolls towards the bottom of the inclined filter plate 82 and finally falls into the collection box 9 for collection, instead of falling directly into the equalization tank 1. The sewage can then flow normally into the equalization tank 1 through the gaps between the guide rollers 84 for subsequent treatment.

[0026] A tray 11 is welded and fixed to the left side surface of the regulating tank 1, and a collection box 9 is installed on the top surface of the tray 11. A strip-shaped bottom slider 91 is welded and fixed to the bottom surface of the collection box 9, and a strip-shaped sliding opening 12 corresponding to the strip-shaped bottom slider 91 is opened on the surface of the tray 11. The strip-shaped bottom slider 91 slides into the strip-shaped sliding opening 12. A retaining plate 95 is movably installed on the bottom surface of the strip-shaped bottom slider 91, and the right end of the retaining plate 95 is stuck on the bottom surface of the tray 11 to ensure the stable installation of the collection box 9.

[0027] The bottom surface of the strip-shaped bottom slider 91 is welded and fixed with a base rod 92, and the bottom surface of the base rod 92 is welded and fixed with a base plate 93. The left end of the clamping plate 95 is movably sleeved on the surface of the base rod 92. A spring 94 is also sleeved between the surface of the base rod 92 and the clamping plate 95 and the base plate 93. A rectangular clamping block 96 is welded and fixed to the top of the right end of the clamping plate 95, and a rectangular bottom groove 13 corresponding to the rectangular clamping block 96 is opened on the bottom surface of the support plate 11. The rectangular clamping block 96 is inserted into the rectangular bottom groove 13 to ensure stable positioning of the collection box 9. When the collection box 9 is full of bulky waste and solid waste from the ship's domestic sewage, simply pull down the clamping plate 95 to gradually compress the spring 94, causing the rectangular clamping block 96 to move out of the rectangular bottom groove 13. This will allow the clamping plate 95 to no longer limit the strip bottom slider 91 and the collection box 9. At this point, the collection box 9 can be moved to the side until the strip bottom slider 91 slides out from the left end opening of the strip sliding opening 12. The collection box 9 can then be easily removed from the top of the support plate 11, allowing the bulky waste and solid waste collected inside the collection box 9 to be dumped.

[0028] The bottom end of the spring 94 rests against the top surface of the base plate 93, and the top end of the spring 94 rests against the bottom surface of the card plate 95.

[0029] The card plate 95 has side lever blocks 97 welded and fixed on both sides of its surface, which makes it convenient for operators to move the side lever blocks 97 down.

[0030] The card plate 95 has a circular hole through its surface that corresponds to the base rod 92, so that the card plate 95 can be smoothly fitted onto the base rod 92. It also allows the card plate 95 to rotate after sliding down, thereby rotating and removing the rectangular card block 96 from the bottom of the rectangular bottom groove 13, which facilitates the subsequent lateral disassembly of the collection box 9.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A marine sewage treatment device, characterised in that: include From left to right, the regulating tank (1), anaerobic tank (2), aerobic tank (3) and MBR tank (4) are connected by overflow pipes. The right side of the MBR tank (4) is connected to a sewage pump (6) through a pipe. The bottom inner side of the anaerobic tank (2), aerobic tank (3) and MBR tank (4) are all equipped with aeration pipes (51), and the aeration pipes (51) are connected to an air pump (5) through a pipe. The inner side of the anaerobic tank (2), aerobic tank (3) and MBR tank (4) are all equipped with online dissolved oxygen concentration sensors (71), and the online dissolved oxygen concentration sensors (71) are connected to the PLC control cabinet (7) above. An inclined filter frame (8) is provided on the top surface of the regulating tank (1), and a collection box (9) is installed on the left side surface of the regulating tank (1) relative to the bottom end of the inclined filter frame (8).

2. A marine sewage treatment device according to claim 1, characterised in that: The inclined filter frame (8) includes two support columns (81) fixed on the top surface of the regulating tank (1), an inclined filter plate (82) fixed between the two support columns (81), a strip-shaped notch (83) opened on the surface of the inclined filter plate (82), and multiple guide rollers (84) rotatably installed in the strip-shaped notch (83).

3. A marine sewage treatment device according to claim 1, characterised in that: A tray (11) is fixed on the left side surface of the regulating pool (1), and a collection box (9) is installed on the top surface of the tray (11).

4. A marine sewage treatment device according to claim 3, characterised in that: The bottom surface of the collection box (9) is fixed with a strip-shaped bottom slider (91), and the surface of the tray (11) is provided with a strip-shaped sliding opening (12) corresponding to the strip-shaped bottom slider (91). The strip-shaped bottom slider (91) slides into the strip-shaped sliding opening (12). A retaining plate (95) is movably installed on the bottom surface of the strip-shaped bottom slider (91), and the right end of the retaining plate (95) is stuck on the bottom surface of the tray (11).

5. A marine sewage treatment device according to claim 4, characterised in that: The bottom surface of the strip-shaped bottom slider (91) is fixed with a base rod (92), and the bottom surface of the base rod (92) is fixed with a base plate (93). The left end of the clamping plate (95) is movably sleeved on the surface of the base rod (92). A spring (94) is also sleeved between the surface of the base rod (92) and the clamping plate (95) and the base plate (93). A rectangular clamping block (96) is fixed at the top right end of the clamping plate (95), and a rectangular bottom groove (13) corresponding to the rectangular clamping block (96) is opened on the bottom surface of the support plate (11). The rectangular clamping block (96) is inserted into the rectangular bottom groove (13).

6. A marine sewage treatment device according to claim 5, characterised in that: The bottom end of the spring (94) abuts against the top surface of the base plate (93), and the top end of the spring (94) abuts against the bottom surface of the card plate (95).

7. A marine sewage treatment device according to claim 5, characterised in that: Side levers (97) are fixed on both sides of the card plate (95).

8. A marine sewage treatment device according to claim 5, characterised in that: The surface of the card plate (95) has a circular hole that corresponds to the base rod (92).

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