CN219279597U - Multistage disinfection pretreatment device for domestic sewage of marine isolation ward - Google Patents
Multistage disinfection pretreatment device for domestic sewage of marine isolation ward Download PDFInfo
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- CN219279597U CN219279597U CN202223406027.XU CN202223406027U CN219279597U CN 219279597 U CN219279597 U CN 219279597U CN 202223406027 U CN202223406027 U CN 202223406027U CN 219279597 U CN219279597 U CN 219279597U
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Abstract
The utility model relates to a multistage disinfection pretreatment device for domestic sewage in an isolation ward of a ship, which comprises a collection cabinet, wherein the bottom of the collection cabinet is connected with a domestic sewage pipeline through a vacuum pump and a vacuum container tank, and the domestic sewage generated in the isolation ward of the ship is automatically conveyed to the collection cabinet by the vacuum pump; the upper part of the chlorination cabinet is connected with a seawater inlet pipe through an electrolytic tank by an electromagnetic valve, and is used for automatically introducing seawater into the electrolytic tank for electrolysis to generate hypochlorous acid and then entering the chlorination cabinet; the lower part is connected with the collection cabinet through a ball valve and the ozone cabinet through an electric valve respectively through a circulating stirring pump, and is used for fully mixing the sewage in the collection cabinet and the chlorination cabinet, and the circulating stirring pump transfers the sewage from the chlorination cabinet to the ozone cabinet; an ozone generator is arranged on the ozone cabinet and connected with a zeolite aeration disc in the ozone cabinet, and is used for introducing ozone into sewage in the ozone cabinet; the bottom is connected with a main pipeline of the ship sewage system through a discharge pump and a one-way valve, and sewage is discharged to the main pipeline of the ship sewage system through an exhaust pump.
Description
Technical Field
The utility model relates to a sewage treatment device for ship isolation ward production, in particular to a multistage disinfection pretreatment device for domestic sewage produced by the ship isolation ward.
Background
The mature sewage disinfection treatment method at present mainly comprises three methods of a chlorination disinfection method, an ultraviolet disinfection method and an ozone disinfection method. The principle of chlorination is that hypochlorous acid generated by chlorine in water is easy to permeate into bacteria via cell walls, inhibit and destroy various enzyme systems in bacteria, oxidize bacteria to kill bacteria, and achieve the aim of disinfection. Its advantages are high disinfecting power, continuous disinfecting action of residual chlorine, secondary pollution, and corrosion of pipeline caused by excessive chlorine. The principle of ultraviolet disinfection is that the ultraviolet spectrum wavelength is in the range of 490 nm-140 nm, which has the characteristic of sterilizing ability, and the nuclear protein of bacteria absorbs the energy of the ultraviolet spectrum to denature and cause metabolic disorder, lose the reproductive capacity, thereby playing the role of disinfection. The method has the advantages that the equipment is simple, and the sterilization process is nontoxic and harmless; the disadvantage is that the water treatment device has no continuous sterilization capability, and has a requirement on the clarity of water quality when being used for water treatment, otherwise, ultraviolet light cannot penetrate the water body to achieve the sterilization effect. The principle of ozone disinfection is that ozone and water are subjected to oxidation-reduction reaction, and generated hydroxyl (OH) can decompose organic substances, microorganisms and germs in the water. The device has the advantages of wide application range, no influence of parameters such as temperature, PH value and the like, no secondary pollution, and capability of automatically decomposing residual ozone into oxygen; but has the disadvantage of not having a continuous sterilization capability. The prior equipment adopting the single disinfection treatment technology in the market generally has a series of problems of incomplete disinfection, short residence time, poor original sewage treatment capability and the like, and is difficult to meet the requirement of thoroughly pre-disinfecting domestic sewage which is generated in an isolation ward and carries infectious disease viruses during the running of a ship.
Patent publication number CN209259846U discloses a double-water tank medical sewage disinfection system, and this patent is used for disinfection treatment of domestic sewage that isolation ward of boats and ships produced mainly has following disadvantages:
the disinfection cabinet body is internally provided with no stirring equipment, the introduced disinfection liquid cannot uniformly react with sewage in the cabinet body, and the sewage is easy to perform anaerobic reaction in the cabinet body; the flowing of sewage adopts a self-flowing mode, when the inflow fluctuates, the residence time of the sewage in the disinfection cabinet can not be ensured, and the disinfection and the sterilization are not thorough.
Disclosure of Invention
The utility model aims to provide a multistage disinfection pretreatment device for domestic sewage generated in an isolation ward of a ship, which can disinfect and sterilize the domestic sewage generated in the isolation ward in advance before entering a ship sewage discharge system, and avoid infectious disease bacteria-carrying sewage from directly flowing into the whole sewage system to cause infectious disease spread.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: a multistage disinfection pretreatment device for marine isolation ward domestic sewage, comprising:
the bottom of the collecting cabinet is connected with a domestic sewage pipeline through a vacuum pump and a vacuum container tank, and domestic sewage generated in an isolation ward of a ship is automatically conveyed to the collecting cabinet by the vacuum pump;
the upper part of the chlorination cabinet is connected with a seawater inlet pipe through an electrolytic tank by an electromagnetic valve, and is used for automatically introducing seawater into the electrolytic tank for electrolysis to generate hypochlorous acid and then entering the chlorination cabinet; the lower part is connected with the collection cabinet through a ball valve and the ozone cabinet through an electric valve respectively through a circulating stirring pump, and is used for fully mixing the sewage in the collection cabinet and the chlorination cabinet, and the circulating stirring pump transfers the sewage from the chlorination cabinet to the ozone cabinet;
an ozone cabinet is provided with an ozone generator, and the ozone generator is connected with a zeolite aeration disc in the ozone cabinet and is used for introducing ozone into sewage in the ozone cabinet; the bottom is connected with a main pipeline of the ship sewage system through a discharge pump and a one-way valve, and sewage is discharged to the main pipeline of the ship sewage system through an exhaust pump.
Further, the upper part of the ozone cabinet is connected with the electrolytic tank through the ozone reducer and the hydrogen diluter.
Further, the electrolyzer is provided with a ventilation device at the top of the outlet to dilute the hydrogen produced by electrolysis, preventing its concentration from reaching the explosion limit.
Further, an ozone reduction net is arranged at the gas discharge position at the top of the ozone cabinet body and is used for reducing redundant ozone.
Further, the domestic sewage generated by the ship isolation ward comprises fecal water, washing ash water and medical wastewater.
Further, the concentration of hypochlorous acid generated by the electrolysis of seawater in the electrolytic tank can enable the effective chlorine concentration of the chlorination cabinet to be not lower than 300mg/L.
Further, the concentration of ozone provided by the ozone generator to the ozone cabinet is not lower than 50mg/L.
The beneficial effects of the utility model are as follows:
the multistage disinfection pretreatment device for the domestic sewage of the isolation ward of the ship provided by the utility model adopts a disinfection means combining chlorination disinfection and ozone disinfection, and solves the problems that ozone disinfection has no continuous sterilization capability, corrosion is caused by excessive hypochlorous acid addition, and the like. The multistage disinfection treatment technology adopted by the utility model has the following advantages:
(1) Hypochlorous acid is prepared by adopting a seawater electrolysis mode according to local conditions, and chlorine-containing tablets such as bleaching powder and the like do not need to be added regularly, so that the process can be started and stopped at any time;
(2) The sewage is thoroughly sterilized through two-stage disinfection treatment, and the removal rate of the treated raw sewage, such as escherichia coli, is more than or equal to 99.99%;
(3) Through the interlocking control of the circulating stirring pump, the liquid level sensor and the electric valve, the residence time of sewage in each disinfection cabinet can be ensured, and the related specification requirements are met;
(4) By controlling the electrolytic tank, the electromagnetic valve, the ozone generator and other devices, the secondary pollution caused by adding excessive oxidant such as hypochlorous acid into the sewage is avoided.
Drawings
FIG. 1 is a system diagram of an apparatus employing a multi-stage sterilization pretreatment technique in accordance with the present utility model;
in the figure: 1-vacuum collection tank, 2-ball valve, 3-vacuum pump, 4-gate valve, 5-ball valve, 6-flowmeter, 7-collection cabinet, 8-solenoid valve, 9-chlorination cabinet high position, 10-chlorination cabinet middle position, 11-chlorination cabinet low position, 12-ball valve, 13-electrolytic tank, 14-chlorination cabinet, 15-circulation stirring pump, 16-hydrogen diluter, 17-ozone reducer, 18-zeolite aeration disc, 19-electric valve, 20-ozone generator, 21-ozone cabinet, 22-ozone cabinet high position, 23-ozone cabinet middle position, 24-ozone cabinet low position, 25-discharge pump, 26-check valve.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
As shown in figure 1, the multistage disinfection pretreatment device for the domestic sewage of the isolation ward for the ship provided by the utility model consists of three groups of cabinet bodies, namely a collection cabinet 7, a chlorination cabinet 14 and an ozone cabinet 21. Domestic sewage passes through the vacuum container tank 1 and the collection cabinet 7 is connected to the vacuum pump 3, the bottom of the chlorination cabinet 14 is connected with the bottom of the collection cabinet 7 through the ball valve 12 through the circulation stirring pump 15 respectively, and is connected with the bottom of the ozone cabinet 21 through the electric valve 19, the upper portion of the chlorination cabinet 14 is connected with a seawater inlet pipe through the electrolytic tank 13 through the electromagnetic valve 8, the flowmeter 6 and the ball valve 5, the ozone cabinet 21 is provided with the ozone generator 20, the ozone generator 20 is connected with the zeolite aeration disc 18 in the ozone cabinet 21, and the bottom of the ozone cabinet 21 is connected with a ship sewage system main pipeline through the discharge pump 25 and the one-way valve 26. The upper part of the ozone cabinet 21 is connected with the electrolytic tank 13 through the ozone reducer 17 and the hydrogen diluter 16.
The utility model relates to a working principle of a multistage disinfection pretreatment device for domestic sewage in an isolation ward for a ship, which comprises the following steps:
1) Domestic sewage generated in the ship isolation ward passes through the vacuum container tank 1 and is automatically conveyed to the collecting cabinet 7 by the vacuum pump 3, and the bottoms of the collecting cabinet 7 and the chlorination cabinet 14 are respectively provided with a vacuum pump 3.
2) The device mainly comprises the steps that when domestic sewage continuously enters the device and the liquid level reaches the low level 11 of the chlorination cabinet, the circulating stirring pump 15 is automatically started to intermittently run, and the sewage in the collection cabinet 7 and the chlorination cabinet 14 is fully mixed through the communication of the ball valve 12; simultaneously, the electromagnetic valve 8 is automatically opened, seawater is led into the electrolytic tank 13, hypochlorous acid is generated by electrolysis of the seawater and then enters the chlorination cabinet 14, and when the set time is reached, the electromagnetic valve 8 is automatically closed;
3) When the sewage liquid level reaches the middle position 10 of the chlorination cabinet, the circulating stirring pump 15 starts to continuously run, and when the chlorination cabinet is at the high position 9, the electric valve 19 is automatically opened, and the sewage subjected to chlorination and disinfection is transferred to the ozone cabinet 21;
4) When the liquid level reaches the middle position 23 of the ozone cabinet, the electric valve 19 is automatically closed, the ozone generator 20 is automatically operated, and ozone enters sewage through the zeolite aeration disc 18 for disinfection treatment. After 30 minutes of operation, the ozone generator 20 stops operating, and the exhaust pump 25 is started, so that sewage is discharged to the main pipeline of the ship sewage system, and the exhaust pump 25 stops operating until the liquid level reaches the low level 24 of the ozone cabinet;
5) When the liquid level of the ozone tank 21 is lower than the low level 24 of the ozone tank, the electric valve 19 is opened again to convey sewage from the chlorination tank 14 to the ozone tank 21. And so on until the sewage level in the chlorination tank 14 is below the low level 11 of the chlorination tank.
Claims (7)
1. A multistage disinfection pretreatment device for marine isolation ward domestic sewage, comprising:
the bottom of the collecting cabinet is connected with a domestic sewage pipeline through a vacuum pump and a vacuum container tank, and domestic sewage generated in an isolation ward of a ship is automatically conveyed to the collecting cabinet by the vacuum pump;
the upper part of the chlorination cabinet is connected with a seawater inlet pipe through an electrolytic tank by an electromagnetic valve, and is used for automatically introducing seawater into the electrolytic tank for electrolysis to generate hypochlorous acid and then entering the chlorination cabinet; the lower part is connected with the collection cabinet through a ball valve and the ozone cabinet through an electric valve respectively through a circulating stirring pump, and is used for fully mixing the sewage in the collection cabinet and the chlorination cabinet, and the circulating stirring pump transfers the sewage from the chlorination cabinet to the ozone cabinet;
an ozone cabinet is provided with an ozone generator, and the ozone generator is connected with a zeolite aeration disc in the ozone cabinet and is used for introducing ozone into sewage in the ozone cabinet; the bottom is connected with a main pipeline of the ship sewage system through a discharge pump and a one-way valve, and sewage is discharged to the main pipeline of the ship sewage system through an exhaust pump.
2. The multistage disinfection pretreatment apparatus for marine isolation ward domestic sewage according to claim 1, wherein: the upper part of the ozone cabinet is connected with the electrolytic tank through the ozone reducer and the hydrogen diluter.
3. The multistage disinfection pretreatment apparatus for marine isolation ward domestic sewage according to claim 1, wherein: the electrolyzer is provided with a ventilation device at the top of the outlet to dilute the hydrogen produced by electrolysis and prevent its concentration from reaching the explosion limit.
4. The multistage disinfection pretreatment apparatus for marine isolation ward domestic sewage according to claim 1, wherein: an ozone reduction net is arranged at the gas discharge position at the top of the ozone cabinet body and is used for reducing redundant ozone.
5. The multistage disinfection pretreatment apparatus for marine isolation ward domestic sewage according to claim 1, wherein: domestic sewage generated by the ship isolation ward comprises fecal water, washing ash water and medical wastewater.
6. The multistage disinfection pretreatment apparatus for marine isolation ward domestic sewage according to claim 1, wherein: the concentration of hypochlorous acid generated by the electrolysis of seawater in the electrolytic tank can ensure that the effective chlorine concentration of the chlorine adding cabinet is not lower than 300mg/L.
7. The multistage disinfection pretreatment apparatus for marine isolation ward domestic sewage according to claim 1, wherein: the concentration of ozone provided by the ozone generator to the ozone cabinet is not lower than 50mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223406027.XU CN219279597U (en) | 2022-12-19 | 2022-12-19 | Multistage disinfection pretreatment device for domestic sewage of marine isolation ward |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223406027.XU CN219279597U (en) | 2022-12-19 | 2022-12-19 | Multistage disinfection pretreatment device for domestic sewage of marine isolation ward |
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| Publication Number | Publication Date |
|---|---|
| CN219279597U true CN219279597U (en) | 2023-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223406027.XU Active CN219279597U (en) | 2022-12-19 | 2022-12-19 | Multistage disinfection pretreatment device for domestic sewage of marine isolation ward |
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| Country | Link |
|---|---|
| CN (1) | CN219279597U (en) |
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2022
- 2022-12-19 CN CN202223406027.XU patent/CN219279597U/en active Active
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