CN215480404U - Marine domestic sewage vacuum collection processing apparatus - Google Patents

Abstract

The utility model relates to a vacuum collection and treatment device for marine domestic sewage, which comprises an adjusting tank, an aerobic MBR tank and a clean water tank which are sequentially communicated, wherein air inlets of the adjusting tank and the aerobic MBR tank are respectively connected with an aeration system, a sewage inlet of the adjusting tank is connected with a vacuum collection system, a sewage outlet of the adjusting tank is connected with a sewage inlet of the aerobic MBR tank through a sewage lifting system, an immersed flat membrane module is arranged in the aerobic MBR tank, a water outlet of the immersed flat membrane module is connected with a clean water inlet of the clean water tank through a clean water suction system, a clean water outlet of the clean water tank is connected with a clean water discharge system, and the vacuum collection system, the sewage lifting system, the clean water suction system, the clean water discharge system and the aeration system are all connected with an electrical control system. The utility model has the advantages that the vacuum collection system can increase the fluidity of sewage and reduce the blockage of the pipeline, thereby reducing the maintenance cost, and meanwhile, the vacuum collection system collects and treats domestic sewage and grey water and plays a positive role in protecting the water environment.

Description

Marine domestic sewage vacuum collection processing apparatus

Technical Field

The utility model belongs to the technical field of ship pollution equipment and water treatment, and particularly relates to a vacuum collection and treatment device for marine domestic sewage, which is suitable for treating the domestic sewage and grey water generated on a ship, and the treated water can be directly discharged to the outside of a ship board, so that the adverse effect of the marine sewage on the water environment can be greatly relieved.

Background

It is understood that marine sanitary sewage refers to any form of toilet and urinal effluents and other waste products; the effluent of a wash basin, a bath tub and all the drainage holes in a medical room (a pharmacy, a ward and the like); a discharge containing a living animal; or other waste water mixed with the above defined effluent. "Grey water" refers to discharged wash water, kitchen sink water, shower water, laundry water, bath water, and wash water, among others. The marine domestic sewage treatment technology is anti-pollution equipment which is arranged for preventing domestic sewage generated by ships and ocean platforms from polluting sailing water areas, and is vital to protecting ocean environment and maintaining ocean ecological balance.

The requirements for the discharge control of ship domestic sewage are increasingly improved along with the increasing protection consciousness of people on the water environment both abroad and domestically. With the development of anti-pollution regulations and the development requirement of 'green ships', the demand for treating the grey water on the ships is higher and higher. The existing ship domestic sewage treatment technology in China still has some problems, such as low ship grey water treatment efficiency, large size, poor impact load resistance, unstable treatment effect and short service life of matching parts. Through search and discovery, Chinese patent with publication number CN210394091U discloses a novel marine domestic sewage treatment device, which solves the problems with a small floor area, but in the actual use process, the sewage and grey water collecting pipelines in the marine domestic sewage treatment system are distributed over the whole ship body and are far away from treatment systems such as an adjusting tank, so that the sewage flow speed is slow and the blockage is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of overcoming the defects of the prior art and provides an efficient and reliable vacuum collection and treatment device for marine domestic sewage, which is suitable for all cargo ships, passenger ships in non-special sea areas and passenger ships in non-domestic inland rivers and can treat the marine domestic sewage and the grey water, and the effluent index meets the requirement.

In order to solve the technical problems, the utility model provides a vacuum collection and treatment device for marine domestic sewage, which comprises an adjusting tank, an aerobic MBR tank and a clean water tank which are sequentially communicated, wherein air inlets of the adjusting tank and the aerobic MBR tank are connected with an aeration system, a sewage inlet of the adjusting tank is connected with a vacuum collection system, a sewage outlet of the adjusting tank is connected with a sewage inlet of the aerobic MBR tank through a sewage lifting system, an immersed flat-plate membrane module is arranged in the aerobic MBR tank, a water outlet of the immersed flat-plate membrane module is connected with a clean water inlet of the clean water tank through a clean water suction system, the immersed flat-plate membrane module is provided with a membrane cleaning port, the membrane cleaning port is connected with an online membrane module cleaning system, a clean water outlet of the clean water tank is connected with a clean water discharge system, and the vacuum collection system, the sewage lifting system, the clean water suction system, the vacuum collection system, the clean water suction system and the clean water discharge system are sequentially communicated with the clean water tank, The clear water discharge system and the aeration system are connected with the electric control system.

The device of the utility model collects sewage in a vacuum mode, adopts an integrated membrane bioreactor technology for sewage treatment, removes organic matters in the sewage through biological treatment, intercepts heat-resistant escherichia coli and suspended matters through a membrane separation technology, and can simultaneously collect and treat domestic sewage and grey water generated by ships, so that the effluent index meets the requirements of regulations.

Furthermore, the vacuum collection system comprises a vacuum pump and a vacuum pressure container, wherein an inlet of the vacuum pump is connected with the vacuum pressure container, and an outlet of the vacuum pump is connected with a sewage inlet of the regulating tank through a pipeline.

Furthermore, a vacuum pressure switch and a vacuum pressure gauge are arranged on a connecting pipeline between the vacuum pressure container and the vacuum pump.

Furthermore, the vacuum collection system comprises a first vacuum pump and a second vacuum pump which are arranged in parallel, the inlet of the first vacuum pump is connected with the outlet of the vacuum pressure container through a first ball valve, the outlet of the first vacuum pump is connected with the sewage inlet of the adjusting tank through a third ball valve, the inlet of the second vacuum pump is connected with the outlet of the vacuum pressure container through a second ball valve, and the outlet of the second vacuum pump is connected with the sewage inlet of the adjusting tank through a fourth ball valve.

Furthermore, a first vacuum pressure switch is arranged on a pipeline between the first ball valve and the vacuum pressure container, a second vacuum pressure switch is arranged on a pipeline between the second ball valve and the vacuum pressure container, and the pipeline between the first ball valve and the vacuum pressure container and the pipeline between the second ball valve and the vacuum pressure container are both connected with a vacuum pressure gauge.

In the structure, the valve members and the flexible joints are arranged at the front and the rear of the vacuum pressure pump, so that the vacuum pressure pump is convenient to overhaul and maintain and has a damping function.

Further, the regulating tank is also provided with a grey water inlet; flushing water openings are formed in the bottoms of the regulating tank and the aerobic MBR tank; the top parts of the regulating tank and the aerobic MBR tank are communicated with the ventilation port; overflow ports are arranged at the upper parts of the aerobic MBR tank and the clean water tank; be provided with stainless steel grid in the equalizing basin, can effectively hold back the solid particle thing that the diameter is greater than 3mm, effectively organize the influence of large granule solid matter to the membrane module.

Furthermore, the sewage lifting system comprises a lifting pump, wherein an inlet of the lifting pump is connected with a sewage outlet of the regulating tank through a pipeline, an outlet of the lifting pump is connected with a sewage inlet of the aerobic MBR tank through a pipeline, a fifth ball valve is arranged on the pipeline between the regulating tank and the lifting pump, and a first flow meter and a sixth ball valve are arranged on the pipeline between the lifting pump and the aerobic MBR tank.

Like this, the bottom of equalizing basin is linked together through promoting pipeline and good oxygen MBR pond, is equipped with elevator pump and flowmeter on the elevator pipeline, can import good oxygen MBR pond with the sewage of equalizing basin bottom through the elevator pump, and convenient operation is swift.

Further, clear water pumping system includes the self priming pump, the import of self priming pump passes through the pipeline and links to each other with the delivery port of the dull and stereotyped membrane module of submergence formula in the good oxygen MBR pond, and the export passes through the pipeline and links to each other with the clean water pond be provided with the seventh ball valve on the pipeline between submergence formula dull and stereotyped membrane module and the self priming pump be provided with eighth ball valve and second flowmeter on the pipeline between self priming pump and the clean water pond.

In the structure, the water outlet of the immersed flat membrane module in the aerobic MBR tank is communicated with the clean water inlet of the clean water tank through a pipeline, the pipeline is provided with a self-priming pump and a flowmeter, the clean water treated by the membrane module is conveyed to the clean water tank through the self-priming pump, and the operation is convenient and rapid.

Furthermore, the aeration system comprises a vortex air pump, an air outlet of the vortex air pump is connected with an aeration device arranged in the regulating tank or the aerobic MBR tank through an aeration pipeline, and valve accessories such as a stop valve, a check valve, a pressure gauge and the like are arranged on the aeration pipeline.

In the structure, the aeration device is provided with two aeration devices, one aeration device is arranged in the regulating tank, and the other aeration device is arranged in the aerobic MBR tank. The aeration system supplies air sources for the regulating tank and the aerobic MBR tank, the aeration is introduced into the regulating tank to play a role in homogenizing and stirring, the aeration introduced into the aerobic MBR tank supplies oxygen for aerobic biological reaction, and the aeration holes of the aeration device are arranged towards the surface of the immersed flat membrane component so as to wash the surface of the membrane.

Further, the clean water discharging system comprises a clean water discharging pipeline and a discharging pump arranged on the clean water discharging pipeline.

In addition, at least one float switch is arranged in the regulating tank, the aerobic MBR tank and the clean water tank.

The utility model has the advantages that the convenient automatic vacuum collection system is adopted and matched with a marine sewage treatment system for use, the fluidity of sewage can be increased, the pipeline blockage is reduced, the maintenance cost is further reduced, and meanwhile, the domestic sewage and the grey water generated by the ship can be collected and treated simultaneously, the pollutants such as organic matters, escherichia coli, suspended matters and the like in the sewage can be effectively removed, so that the effluent index meets the latest international and domestic regulation requirements, and the utility model has a positive effect on the protection of the water environment. Meanwhile, the vacuum collection mode of the black water can effectively reduce the treatment water quantity of the device and the drift diameter of the ship pipeline, and a large amount of space is saved for the ship. The device has the advantages of small occupied area, high reliability, small system sludge discharge amount, low energy consumption and convenient operation and maintenance.

Drawings

FIG. 1 is a schematic flow chart of the system of the present invention.

In the figure: 1. the utility model has a structure schematic diagram.

In the figure: 1. a first vacuum pressure switch, 2, a second vacuum pressure switch, 3, a vacuum pressure gauge, 4, a first ball valve, 5, a second ball valve, 6, a third ball valve, 7, a fourth ball valve, 8, an adjusting tank super-high float switch, 9, an adjusting tank high float switch, 10, an adjusting tank low float switch, 11, a first gate valve, 12, a first stop check valve, 13, a fifth ball valve, 14, a second gate valve, 15, a first flowmeter, 16, a sixth ball valve, 17, a first stop valve, 18, a second stop valve, 19, a pressure gauge, 20, a first check valve, 21, a third stop valve, 22, a fourth stop valve, 23, an aerobic tank super-high float switch, 24, an aerobic MBR tank high float switch, 25, an aerobic tank low float switch, 26, an activated sludge sampling cock, 27, an MBR vacuum electrical contact point, 28, a fifth stop valve, 29. a seventh ball valve, 30, an eighth ball valve, 31, a second flowmeter, 32, a clean water pond ultrahigh floating ball switch, 33, a clean water pond high floating ball switch, 34, a clean water pond low floating ball switch, 35, an effluent sampling cock, 36, a ninth ball valve, 37, a second stop check valve and 38, a regulating pond sampling cock; A. the device comprises a vacuum pressure container, a first vacuum pump, a second vacuum pump, a regulating tank, an aerobic MBR tank, a lift pump, a vortex air pump, an H electric cabinet, a self-priming pump, a clean water tank, a discharge pump, a first aeration device, a second aeration device, an N immersed flat-plate membrane component, and a water tank.

Detailed Description

Example 1

The marine domestic sewage vacuum collection and treatment device provided by this embodiment, as shown in fig. 1, comprises a vacuum collection system, a regulation tank D, a sewage lifting system, an aerobic MBR tank E, a clean water suction system, a clean water tank J, and a clean water discharge system, which are sequentially connected, wherein air inlets of the regulation tank D and the aerobic MBR tank E are both connected with an aeration system, an outlet of the vacuum collection system is connected with a sewage inlet of the regulation tank D, a sewage outlet of the regulation tank D is connected with a sewage inlet of the aerobic MBR tank E through the sewage lifting system, an immersed flat membrane module N is arranged in the aerobic MBR tank E, a water outlet of the immersed flat membrane module N is connected with a clean water inlet of the clean water tank J through the clean water suction system, the immersed flat membrane module N has a membrane cleaning port, the membrane cleaning port is connected with the membrane module online cleaning system, and a clean water outlet of the clean water tank J is connected with the clean water discharge system, the vacuum collection system, the sewage lifting system, the clear water suction system, the clear water discharge system and the aeration system are all connected with an electrical control system (namely an electric cabinet H). The lower part of the regulating tank D is provided with a regulating tank sampling cock 38, and the lower part of the aerobic MBR tank E is provided with an activated sludge sampling cock 26.

The vacuum collection system is provided with two vacuum pipelines which are arranged in parallel and comprises a vacuum pressure container A, a first vacuum pump B, a second vacuum pump C, a first vacuum pressure switch 1, a second vacuum pressure switch 2, a vacuum pressure gauge 3, a first ball valve 4, a second ball valve 5, a third ball valve 6 and a fourth ball valve 7. The vacuum pump comprises a first vacuum pump B, an inlet of a second vacuum pump C is connected with a vacuum pressure container A through a pipeline respectively, an outlet of the second vacuum pump C is connected with a sewage inlet of a regulating pool D through a pipeline respectively, a first vacuum pressure switch 1 is arranged on the pipeline between the vacuum pressure container A and the first vacuum pump B, a first ball valve 4 is arranged on the pipeline between the vacuum pressure container A and the second vacuum pump C, a second vacuum pressure switch 2 and a second ball valve 5 are arranged on the pipeline between the vacuum pressure container A and the second vacuum pump C, a vacuum pressure gauge 3 is connected with the pipeline between the first ball valve 4 and the vacuum pressure container A and the pipeline between the second ball valve 5 and the vacuum pressure container A respectively, a third ball valve 6 is arranged on the pipeline between the first vacuum pump B and the regulating pool D, and a fourth ball valve 7 is arranged on the pipeline between the second vacuum pump C and the regulating pool D.

Aeration systems includes vortex air pump G, the aeration pipeline, valve accessories and first aeration equipment L and second aeration equipment M, vortex air pump G is connected to first check valve 20's import through second stop valve 18, the aeration pipeline connection of the export of first check valve 20 area pressure gauge 19 (the pressure gauge is purchased from Jiangsu telegauge limited company) connects first aeration equipment L and second aeration equipment M respectively through the aeration branch pipe, be equipped with fourth stop valve 22 on the aeration branch pipe of connecting first aeration equipment L, be equipped with third stop valve 21 on the aeration branch pipe of connecting second aeration equipment M, first aeration equipment L sets up in equalizing basin D, second aeration equipment M sets up in good oxygen MBR pond E.

The membrane module online cleaning system comprises a funnel, a dosing pipeline and a valve accessory, wherein the funnel is arranged at a membrane cleaning port, the membrane cleaning port is connected with the interior of a membrane cavity of the immersed flat membrane module N through the dosing pipeline, and a fifth stop valve 28 is arranged on the dosing pipeline. The clear water pumping system comprises a self-priming pump I, a second flow meter 31, a pipeline and valve accessories, a water outlet of the immersed flat membrane component N is connected with a water drainage pipeline, the water drainage pipeline is connected to a clear water tank J, and a seventh ball valve 29, an eighth ball valve 30 and the second flow meter 31 (the flow meter is purchased from Nanjing Yao Tang automated technology Co., Ltd.), the self-priming pump I and an electric contact vacuum pressure meter 27 (the electric contact vacuum pressure meter is purchased from Hongqi Meter Co., Ltd.) are arranged on the water drainage pipeline.

In addition, the top of the regulating reservoir D is provided with a grey water inlet with a first gate valve 11; the top parts of the regulating tank D and the aerobic MBR tank E are communicated with a ventilation port through pipelines; overflow ports are arranged at the upper parts of the aerobic MBR tank E and the clean water tank J. Two sets of stainless steel grids are arranged in the adjusting tank D. Three float switches are sequentially arranged in the adjusting tank D from top to bottom, namely an adjusting tank ultrahigh-position float switch 8, an adjusting tank high-position float switch 9 and an adjusting tank low-position float switch 10, three float switches are sequentially arranged in the aerobic MBR tank E from top to bottom, namely an aerobic MBR tank ultrahigh-position float switch 23, an aerobic MBR tank high-position float switch 24 and an aerobic MBR tank low-position float switch 25, three float switches are sequentially arranged in the clean water tank J from top to bottom, namely a clean water tank ultrahigh-position float switch 32, a clean water tank high-position float switch 33 and a clean water tank low-position float switch 34.

The sewage lifting system comprises a lifting pump F, a first flowmeter 15, a lifting pipeline and a valve assembly, the bottom of the regulating tank D is communicated with the aerobic MBR tank E through the lifting pipeline, a fifth ball valve 13, the lifting pump F and a sixth ball valve 16 are sequentially arranged on the lifting pipeline, and the first flowmeter 15 is arranged on the lifting pipeline between the lifting pump F and the aerobic MBR tank E. The sludge discharge pipeline of the aerobic MBR tank E provided with the second gate valve 14 is also used as a flushing pipeline of the aerobic MBR tank E. The inlet line of the washing water equipped with the first shut-off check valve 12 is in communication with the conditioning tank D and the aerobic MBR tank E by means of valve operation. The sludge discharge in the regulating tank D and the aerobic MBR tank E can be realized through an emergency discharge pipeline, and the emergency discharge pipeline is provided with a first stop valve 17.

The clear water discharging system comprises a clear water discharging pipeline and a discharging pump K arranged on the clear water discharging pipeline. The bottom of the clean water tank J is provided with a clean water discharge pipeline, and the pipeline is sequentially provided with a water outlet sampling cock 35, a ninth ball valve 36, a discharge pump K and a second stop check valve 37.

Under the normal operation state, the first stop check valve 12, the second gate valve 14, the first stop valve 17, the fifth stop valve 28, the regulating reservoir sampling cock 38, the activated sludge sampling cock 26 and the effluent sampling cock 35 are normally closed, and other valve elements are normally open. The vortex air pump G is always in an operating state, the first vacuum pump B and the second vacuum pump C are automatically started and stopped according to the vacuum pressure set by the first vacuum pressure switch 1, the lifting pump F is automatically started and stopped according to the water level condition of the regulating reservoir D, the self-sucking pump I operates for 8 minutes and stops for 2 minutes, and the discharging pump K is automatically started and stopped according to the water level condition of the clean water reservoir J. The vortex air pump provides an air source for the uniform water quality of the regulating tank D, the biological aerobic treatment of the aerobic MBR tank E and the flushing of the surface of the diaphragm; the sewage is quantitatively pumped to an aerobic MBR tank E by a lifting pump F; the self-priming pump pumps the treated clean water from the interior of the immersed flat membrane component N and pumps the clean water to a clean water tank J; the drain pump K drains the water in the clean water tank to the outside.

The operation of the device comprises the following steps:

and S1, starting and stopping the first vacuum pump B and the second vacuum pump C according to the vacuum pressure condition of the system, starting according to the low vacuum pressure value set by the first vacuum pressure switch 1, and stopping according to the high vacuum pressure value. The vacuum pressure container A is used for increasing the vacuum volume of the pipeline, increasing the number of vacuum toilets which can be used simultaneously and preventing the vacuum pump from being started and stopped frequently. The vacuum collection system is provided with a low vacuum pressure alarm, which is activated when the vacuum pressure is lower than the set value of the second vacuum pressure switch 2.

And S2, enabling the black water to enter a regulating reservoir D in a vacuum collection mode, and enabling the grey water to enter the regulating reservoir D in a gravity collection mode. Through the control of a floating ball switch arranged in the regulating reservoir, when the liquid level of the regulating reservoir D reaches a high-level floating ball switch 9, the lifting pump F is started, and sewage is quantitatively pumped from the regulating reservoir D to the aerobic MBR reservoir E by operating a sixth ball valve 16 at the outlet of the lifting pump; when the liquid level of the regulating reservoir D is reduced to the low float switch 10, the lift pump F is stopped. The adjusting tank D is provided with an ultrahigh liquid level alarm, and when the liquid level rises to the float switch 8, the alarm is started.

S2, filtering sewage by an immersed flat plate membrane module N after the sewage enters an aerobic MBR tank E, controlling by a float switch arranged in the aerobic MBR tank E, starting a self-priming pump I when the liquid level in the tank reaches a high-level float switch 24, operating in a mode of operating for 8 minutes and stopping for 2 minutes, pumping purified water from a membrane cavity of the membrane module, and conveying the purified water to a clean water tank J; when the liquid level is lower than the low float switch 25, the self-priming pump stops. The aerobic MBR tank E is provided with an ultrahigh liquid level alarm, and when the liquid level rises to the float switch 23, the alarm is started.

And S3, after the treated water enters the clean water tank J, when the liquid level in the tank reaches the high-level float switch 33, the discharge pump K is started, and when the liquid level is lower than the low-level float switch 34, the discharge pump is stopped. The clean water tank J is provided with an ultrahigh liquid level alarm, and when the liquid level rises to the float switch 32, the alarm is started.

In the step S1, a grid is arranged in the adjusting tank D, and aeration is introduced into the adjusting tank D, so that the adjusting tank D can effectively adjust the sewage entering the device, and effectively block large-particle solid pollutants.

In step S2, aeration is introduced into the aerobic MBR tank E to supply oxygen for aerobic biological reaction, and simultaneously, aeration holes of the second aeration device are arranged toward the surface of the submerged flat membrane module N to wash the membrane surface thereof.

In addition, when the equipment needs to be unpacked, maintained and cleaned, the first cut-off check valve 12 is opened, the sea (fresh) water from the pressure water tank on the ship enters each tank body and the pipeline, the flushing is carried out to remove the sludge adhered to the sea (fresh) water, then the second gate valve 14 and the first cut-off valve 17 are opened and opened respectively, the sixth ball valve 16 is closed, the lift pump F is opened, and the cleaned water is discharged from the emergency discharge port.

In addition, when the sludge in the aerobic MBR tank E is more, sludge discharging operation is required. When the sludge is discharged, firstly, the first vacuum pump B, the second vacuum pump C, the vortex air pump G, the self-sucking pump I and the lifting pump F are closed; and (3) after the mixture is statically precipitated for half an hour, opening the second gate valve 14 and the first stop valve 17, closing the sixth ball valve 16, opening the lifting pump F to discharge the sludge, and discharging the sludge in the aerobic MBR tank E through the discharge port.

The membrane module online cleaning system is generally started every 3 months to clean the immersed flat membrane module N once. When the membrane module is cleaned on line, the whole device is closed, the seventh ball valve 29 is closed, the fifth stop valve 28 is opened, the prepared cleaning agent is injected into the membrane cavity of the immersed flat-plate membrane module N through the membrane cleaning port, the fifth stop valve 28 is closed after the membrane module is soaked for 2-5 hours, the seventh ball valve 29 is opened, and the whole device can be recovered to normally operate.

The utility model adopts vacuum collection technology, biochemical technology and membrane separation technology, can collect and treat domestic sewage and grey water generated on ships, and is suitable for various passenger ships, cargo ships and ocean platforms. The discharged water after being treated by the device meets the requirements of the International maritime organization MEPC.227 (64) resolution (except section 4.2) and GB3552-2018 Ship Water pollutant discharge control Standard (except section 5.2.3), and can be directly discharged. The device has the advantages of compact structure, small occupied area, high automation degree, high processing efficiency, good stability, low failure rate and convenient operation and maintenance.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a marine domestic sewage vacuum collection processing apparatus, includes equalizing basin, good oxygen MBR pond and clean water basin that communicate in proper order, its characterized in that: the air inlet in equalizing basin, good oxygen MBR pond all links to each other with aeration systems, the sewage import and the vacuum collection system of equalizing basin link to each other, link to each other through sewage hoist system between the sewage export of equalizing basin and the sewage import in good oxygen MBR pond be provided with submergence formula flat membrane module in the good oxygen MBR pond, link to each other through clear water suction system between the delivery port of submergence formula flat membrane module and the clear water import of clean water basin, the clear water export of clean water basin links to each other with clear water discharge system, vacuum collection system, sewage hoist system, clear water suction system, clear water discharge system, aeration systems all link to each other with electrical control system.

2. The vacuum collection and treatment device for the domestic sewage of the ship according to claim 1, characterized in that: the vacuum collection system comprises a vacuum pump and a vacuum pressure container, wherein the inlet of the vacuum pump is connected with the vacuum pressure container, and the outlet of the vacuum pump is connected with the sewage inlet of the regulating tank through a pipeline.

3. The vacuum collection and treatment device for the domestic sewage of the ship according to claim 2, characterized in that: and a vacuum pressure switch and a vacuum pressure gauge are arranged on a connecting pipeline between the vacuum pressure container and the vacuum pump.

4. The vacuum collection and treatment device for the domestic sewage of the ship according to claim 3, characterized in that: the vacuum collecting system comprises a first vacuum pump and a second vacuum pump which are arranged in parallel, the inlet of the first vacuum pump is connected with the outlet of the vacuum pressure container through a first ball valve, the outlet of the first vacuum pump is connected with the sewage inlet of the regulating tank through a third ball valve, the inlet of the second vacuum pump is connected with the outlet of the vacuum pressure container through a second ball valve, and the outlet of the second vacuum pump is connected with the sewage inlet of the regulating tank through a fourth ball valve.

5. The vacuum collection and treatment device for the domestic sewage of the ship according to claim 4, characterized in that: a first vacuum pressure switch is arranged on a pipeline between the first ball valve and the vacuum pressure container, a second vacuum pressure switch is arranged on a pipeline between the second ball valve and the vacuum pressure container, and the pipeline between the first ball valve and the vacuum pressure container and the pipeline between the second ball valve and the vacuum pressure container are both connected with a vacuum pressure gauge.

6. The vacuum collection and treatment device for the domestic sewage of the ship according to claim 1, characterized in that: the regulating tank is also provided with a grey water inlet; flushing water openings are formed in the bottoms of the regulating tank and the aerobic MBR tank; the top parts of the regulating tank and the aerobic MBR tank are communicated with the ventilation port; overflow ports are arranged at the upper parts of the aerobic MBR tank and the clean water tank; and a stainless steel grating is arranged in the regulating tank.

7. The vacuum collection and treatment device for the domestic sewage of the ship according to claim 1, characterized in that: the sewage lifting system comprises a lifting pump, wherein the inlet of the lifting pump is connected with the sewage outlet of the regulating tank through a pipeline, the outlet of the lifting pump is connected with the sewage inlet of the aerobic MBR tank through a pipeline, a fifth ball valve is arranged on the pipeline between the regulating tank and the lifting pump, and a first flow meter and a sixth ball valve are arranged on the pipeline between the lifting pump and the aerobic MBR tank.

8. The vacuum collection and treatment device for the domestic sewage of the ship according to claim 1, characterized in that: the clear water pumping system comprises a self-priming pump, wherein the inlet of the self-priming pump is connected with the water outlet of an immersed flat membrane component in the aerobic MBR tank through a pipeline, the outlet of the self-priming pump is connected with a clear water tank through a pipeline, a seventh ball valve is arranged on the pipeline between the immersed flat membrane component and the self-priming pump, and an eighth ball valve and a second flow meter are arranged on the pipeline between the self-priming pump and the clear water tank.

9. The vacuum collection and treatment device for the domestic sewage of the ship according to claim 1, characterized in that: the aeration system comprises a vortex air pump, an air outlet of the vortex air pump is connected with an aeration device arranged in the regulating tank or the aerobic MBR tank through an aeration pipeline, and a stop valve, a check valve and a pressure gauge are arranged on the aeration pipeline.

10. The vacuum collection and treatment device for the domestic sewage of the ship according to claim 1, characterized in that: the clear water discharging system comprises a clear water discharging pipeline and a discharging pump arranged on the clear water discharging pipeline.

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