CN211813775U - A medical wastewater purification device - Google Patents

Abstract

The utility model discloses a device for purifying medical waste water, which relates to the technical field of medical devices, so as to solve the shortcoming of the prior art that suspended solids in the medical waste water are directly filtered by a filtering mechanism without precipitation, which is easy to cause blockage of the filtering mechanism; Tank, sedimentation tank and disinfection tank, the sedimentation tank is provided with a large mesh fence and a small mesh fence, the upper right part of the small mesh fence is provided with a communication port, the disinfection tank is provided with a stirring mechanism and a liquid chlorine port, and the disinfection tank is provided with a drainage outlet below The inner wall of the sedimentation tank is provided with a water inlet pipe, which is fixed on the inner wall of the sedimentation tank in a spiral shape. The injection port of the flocculant is connected with the sedimentation tank through the sewage collection tank. By implementing the technical solution, the suspended matter in the medical wastewater can be precipitated and then filtered, the service life of the filtering mechanism can be prolonged, and the problem that the existing filtering mechanism is easy to be difficult to clean can be solved.

Description

A medical wastewater purification device

technical field

The utility model relates to the technical field of medical equipment, and more particularly to a medical waste water purification device.

Background technique

Hospital wastewater is mainly a variety of toxic, harmful and bacterial wastewater produced by medical institutions during the operation process. The quality of the water varies with the nature, scale and region of different hospitals. The source and composition are complex, mainly composed of wastewater discharged from diagnosis and treatment rooms, wards, pathological dissection rooms, radiology rooms, X-ray photography rooms and operating rooms, as well as a small amount of office and washing wastewater. Hospital wastewater contains a large number of pathogenic bacteria, viruses and chemical agents, which have the characteristics of pollution, acute infection and latent infection; the main pollutants contained in medical wastewater are: pathogens, organic solvents, acids, alkalis, organic matter, floating matter As well as suspended solids, radioactive pollutants, etc., the total amount of bacteria in the untreated raw sewage is more than 8 to 10/mL; hospital wastewater is one of the main sources of toxicity risks in the water environment, and its toxic pollutants enter the aquatic ecology. Potential negative effects on balance and drinking water sources. The State Environmental Protection Administration and the State Administration of Quality and Alkalinity Inspection and Quarantine jointly issued the pollutant discharge standard for medical institutions "Water Pollution Discharge Standard for Medical Institutions" (GB18466-2005) in July 2005. The waste gas, sludge and other pollutants put forward the requirements for comprehensive control, and emphasize the disinfection effect of pathogen-containing sewage.

The patent with the application number CN201720008904.8 discloses an environmental protection purification device for medical waste water, which includes a sewage collection tank, a sedimentation tank and a disinfection tank. The sewage collection tank includes a sewage removal port and a water inlet, and the water inlet passes through the sewage collection port. The tank is connected with the sedimentation tank, the sedimentation tank is provided with a large mesh fence, a small mesh fence and a cover, and the upper right side of the small mesh fence is provided with a communication port, and the communication port is fixed between the sedimentation tank and the disinfection tank, The top of the disinfection tank is fixed with a motor and a water outlet is fixed on the right side of the liquid chlorine port, the lower part of the motor is connected with a rotating shaft, a blade is fixed on the rotating shaft, and the water outlet is provided with a valve. This technical solution can realize the treatment of medical wastewater at the source, first filtering, then precipitation, and finally sterilizing. However, this technical solution still has the following shortcomings: the suspended solids in the medical wastewater are directly filtered through the large mesh fence and the small mesh fence without precipitation. The large net fence and the small net fence are blocked, which is difficult to clean; on the other hand, it affects the fluidity of the sewage and causes secondary pollution.

Utility model content

In view of the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a medical waste water purification device, which can realize the precipitation of the suspended solids in the medical waste water before filtering, so as to avoid clogging the filtering mechanism.

The utility model specifically adopts the following technical solutions in order to achieve the above-mentioned purpose:

A device for purifying medical waste water, comprising a sewage collection tank, a sedimentation tank and a disinfection tank, a sewage removal port is arranged under the sewage collection tank, the sewage collection tank is arranged under a sedimentation tank, and a large net is arranged on the sedimentation tank Fence, small net fence and cover, the upper part of the right side of the small net fence is provided with a communication port, the communication port is arranged between the sedimentation tank and the disinfection tank, the disinfection tank is provided with a stirring mechanism and a liquid chlorine port, and the bottom of the disinfection tank is provided with a communication port. A water outlet and a valve arranged on the water outlet are arranged on the side, and a water inlet pipe is arranged around the inner wall of the sedimentation tank. The water inlet pipe is spirally fixed on the inner wall of the sedimentation tank. A plurality of water spray ports are arranged on one side of the inner wall of the tank, and a flocculant injection port is arranged at the bottom of the sedimentation tank, and the flocculant injection port is communicated with the sedimentation tank through the sewage collecting tank.

The working principle of the basic scheme of the utility model is as follows: when the medical wastewater is treated by the above structure, the medical wastewater is sprayed into the sedimentation tank through a plurality of water spray ports on the water inlet pipe, and the flocculant injection port is provided at the bottom of the sedimentation tank. The flocculant is injected into the sedimentation tank through the flocculant injection port, and the suspended particles in the wastewater are destabilized by the flocculation sedimentation method. That is, it is separated from the water phase and precipitated under the action of gravity, so as to remove a large amount of suspended solids in the medical wastewater, and a large amount of suspended solids are deposited into the sewage gathering tank by gravity, and then discharged through the decontamination outlet set under the sewage gathering tank; A large amount of suspended solids will not be filtered by the large mesh fence and the small mesh fence, which can avoid the problem of clogging the large mesh fence and the small mesh fence, and will not affect the fluidity of the sewage and the problem of secondary pollution. The technical solution can realize the precipitation and then filter the suspended solids in the medical wastewater, and can remove a large amount of suspended solids in the filtered medical wastewater without blocking the filtering mechanism, prolonging the service life of the filtering mechanism, and solving the problem that the existing filtering mechanism is easy to Causes problems that are difficult to clean up, and has good practicability.

In addition, the medical wastewater filtered by the large mesh fence and the small mesh fence enters the disinfection tank through the communication port, and is disinfected and sterilized by the liquid chlorine introduced into the disinfection tank; and a stirring mechanism is set in the disinfection tank. The wastewater is fully contacted for thorough disinfection and sterilization, and finally the filtered and sterilized water is discharged through the drain.

Further, a spiral nozzle is provided at one end of the flocculant injection port extending into the sedimentation tank. The spraying direction of the spiral nozzle is upward, and the spray angle can range from 50° to 70°, which can make the medical wastewater sprayed out through multiple water nozzles fully contact with the flocculant sprayed from the spiral nozzle, and fully contact and react through flocculation and sedimentation. The medical wastewater can be directly deposited into the sewage collection tank without being filtered by the large mesh fence and the small mesh fence, and the water inlet pipe is fixed on the inner wall of the sedimentation tank, and the precipitated flocs will not be entangled in the water inlet pipe. On, practicality is good.

Further, each of the plurality of water jets is provided with an inclined downward chamfer R, and 30°<&<70°. So that the sewage sprayed from multiple water nozzles can react with the flocculant along the inclined downward chamfer first, and then pass through the large mesh fence and the small mesh fence to filter, and the water nozzles of different heights can be set with different inclined chamfers. The controllable realization of the reaction position of the sprayed medical sewage and the flocculant, and the control of the precipitation position of the precipitated floc.

Further, the large mesh fence has a double-layer structure and is horizontally fixed on the upper part of the sedimentation tank. The suspended solids that have not been reacted by the flocculant can be filtered through the double-layer structure of the large mesh fence to ensure the removal effect of the suspended solids in the medical wastewater.

Further, the small mesh fence is a hemispherical structure, and the network port of the small mesh fence is smaller than that of the large mesh fence. The small mesh fence of the hemispherical structure arranged on the upper end of the sedimentation tank can increase the filtering area of the filtering mechanism, further filter the medical wastewater, and improve the filtering effect.

Further, the sewage collection tank is an inverted conical structure and is buried underground. The sewage removal port is arranged at the bottom of the sewage gathering tank, so that the flocs deposited in the sewage collecting tank can slide to the bottom of the sewage collecting tank due to the action of gravity, and be discharged through the sewage removal port.

Further, the stirring mechanism includes a driving motor, a stirring shaft and a screw blade arranged on the stirring shaft, one end of the stirring shaft is connected with the output shaft of the driving motor through a coupling, and the other end of the stirring shaft extends into the disinfection tank. The driving motor drives the stirring shaft to rotate and drives the spiral blade arranged on the stirring shaft to rotate, so that the liquid chlorine introduced into the disinfection tank is fully contacted and reacted with the medical waste water, and the disinfection and sterilization are carried out thoroughly; The wavy blade stirs better.

Further, the stirring shaft is provided with a hollow cavity, the screw blade is provided with several through holes communicating with the hollow cavity, and the liquid chlorine port is arranged on the upper end of the stirring shaft. The liquid chlorine is introduced into the hollow cavity of the stirring shaft through the liquid chlorine port set on the stirring shaft, and during the stirring process of the driving motor driving the stirring shaft, the liquid chlorine in the hollow cavity passes through several channels on the screw blade due to the centrifugal force. The hole flows into the disinfection tank, and fully contacts and reacts with the medical wastewater in the disinfection tank to achieve the effect of rapid disinfection and sterilization.

As mentioned above, the beneficial effects of the present utility model are as follows:

1. The water inlet pipe of the present utility model is arranged around the inner wall of the sedimentation tank, and the medical wastewater first reacts with the flocculant in the sedimentation tank, so that the suspended particles in the wastewater lose the stability through the flocculation sedimentation method, and the colloidal particles coagulate each other so that the The particles increase to form flocs, and after the flocs grow to a certain volume, they are separated from the water phase and precipitated under the action of gravity, thereby removing a large amount of suspended solids in the medical wastewater, and a large amount of suspended solids are deposited into the sewage pool by gravity. It is discharged through the decontamination outlet set under the sewage gathering tank; therefore, a large amount of suspended solids in the medical wastewater will not be filtered by the large mesh fence and the small mesh fence, which can avoid the problem of clogging the large mesh fence and the small mesh fence. It will not affect the fluidity of sewage and cause secondary pollution.

2. The TCM wastewater of the present utility model is sprayed into the sedimentation tank through a plurality of water nozzles on the water inlet pipe; and the flocculant injection port is provided with a spiral nozzle at one end extending into the sedimentation tank, which can make it spray through the multiple water nozzles. The discharged medical wastewater is fully contacted with the flocculant sprayed by the spiral nozzle, and is fully reflected by flocculation and sedimentation, so that the medical wastewater can be directly deposited into the sewage gathering tank without being filtered by the large mesh fence and the small mesh fence, reducing the need for large meshes. Filter loads for fences and small mesh fences.

3. In the present utility model, a plurality of water spouting openings are provided with inclined downward chamfers &, and 30 ° <& < 70 °, so that the sewage ejected from the multiple water spouting openings can be inclined downward along the chamfering angle First react with the flocculant and then filter through the large mesh fence and the small mesh fence, and the water jets of different heights can be set with different inclined chamfers, which can control the reaction position of the injected medical sewage and the flocculant, and control the The settling position of the settled flocs.

Description of drawings

Fig. 1 is the sectional schematic diagram of a kind of medical waste water purification device of the present utility model;

Figure 2 is a schematic diagram of a water inlet pipeline in a medical wastewater purification device of the present invention.

Reference numerals: 01-pollution tank, 02-settling tank, 03-disinfection tank, 04-decontamination port, 05-large mesh fence, 06-small mesh fence, 07-cover, 08-connecting port, 09-stirring Mechanism, 10-liquid chlorine port, 11-drainage port, 12-valve, 13-water inlet pipe, 14-water spray port, 15-flocculant injection port, 16-spiral nozzle, 17-drive motor, 18-stirring shaft , 19-spiral blade, 20-through hole.

Detailed ways

For those skilled in the art to better understand the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and the following embodiments.

Please refer to FIG. 1 and FIG. 2 , this embodiment provides a medical wastewater purification device, including a sewage collection tank 01, a sedimentation tank 02 and a disinfection tank 03, a cover 07 is buckled above the sedimentation tank 02, and the sewage collection tank 01 is provided with Below the sedimentation tank 02, and the sewage gathering tank 01 is an inverted conical structure and buried in the ground, the sewage gathering tank 01 is provided with a decontamination outlet 04, and the decontamination outlet 04 is arranged at the bottom of the sewage gathering tank 01, so that sedimentation in The sewage discharge in the sewage collecting tank 01 can slide to the bottom of the sewage collecting tank 01 due to the action of gravity, and be discharged through the sewage removal port 04 .

Further, a water inlet pipe 13 is arranged around the inner wall of the sedimentation tank 02, and the water inlet pipe 13 is welded on the inner wall of the sedimentation tank 02 in a spiral shape. Port 14, the bottom of the sedimentation tank 02 is provided with a flocculant injection port 15, the flocculant injection port 15 communicates with the sedimentation tank 02 through the fouling tank 01, and the flocculant is injected into the sedimentation tank 02 through the flocculant injection port 15. The flocculation precipitation method makes the suspended particles in the wastewater lose the stability, and the colloidal particles coagulate each other so that the particles increase and form flocs. After the flocs grow to a certain volume, they will separate from the water phase and precipitate under the action of gravity, thereby removing medical wastewater. A large amount of suspended solids are deposited in the sewage gathering tank 01 by gravity, and are discharged through the decontamination port 04 set below the sewage gathering tank 01; therefore, a large amount of suspended solids in the medical wastewater will not pass through the filter mechanism. It can avoid the problem of clogging the filter mechanism, and will not affect the fluidity of the sewage and the problem of secondary pollution.

Specifically, one end of the flocculant injection port 15 extending into the sedimentation tank 02 is provided with a spiral nozzle 16, the spraying direction of the spiral nozzle 16 is upward, and the spray angle range can be 50°-70°, which can make the spray out through the plurality of water spray ports 14. The treated medical wastewater is fully contacted with the flocculant sprayed from the spiral nozzle 16, and is fully contacted and reacted through flocculation and precipitation.

Further, the sedimentation tank 02 is provided with a filtering mechanism, and the filtering mechanism includes a large mesh fence 05 and a small mesh fence 06. The large mesh fence 05 is a double-layer structure and is horizontally fixed on the upper part of the sedimentation tank 02. The suspended solids can be filtered through the large mesh fence 05 with double-layer structure to ensure the removal effect of suspended solids in medical wastewater.

In addition, the small mesh fence 06 has a hemispherical structure, and the network port of the small mesh fence 06 is smaller than that of the large mesh fence 05 . The small mesh fence 06 of the hemispherical structure arranged on the upper end of the sedimentation tank 02 can increase the filtering area of the filtering mechanism, further filter the medical waste water, and improve the filtering effect. The technical solution can realize the precipitation and then filter the suspended solids in the medical wastewater, and can remove a large amount of suspended solids in the filtered medical wastewater without blocking the filtering mechanism, prolonging the service life of the filtering mechanism, and solving the problem that the existing filtering mechanism is easy to cause Difficult to clean up problems, good practicality.

Further, a plurality of water jets 14 are provided with chamfers that are inclined downward, and 30° < ≤ 70°. Specifically, the angles of the chamfers of the water jets 14 are set according to the different heights of the water jets 14, so that The sewage sprayed from the plurality of water jets 14 can first react with the flocculant along the inclined downward chamfer, and then be filtered through the large mesh fence 05 and the small mesh fence 06, and the water jets 14 of different heights can be set with different inclinations. Chamfering can control the reaction position of the injected medical sewage and the flocculant, and control the precipitation position of the precipitated flocs.

Further, the upper part of the right side of the small mesh fence 06 is provided with a communication port 08, the communication port 08 is arranged between the sedimentation tank 02 and the disinfection tank 03, the disinfection tank 03 is provided with a stirring mechanism 09 and a liquid chlorine port 10, and the disinfection tank 03 The bottom is provided with a drain 11 and a valve 12 arranged on the drain 11. The medical wastewater filtered through the large mesh fence 05 and the small mesh fence 06 enters the disinfection tank 03 through the communication port 08, and passes through the disinfection tank 03. The liquid chlorine is disinfected and sterilized; and a stirring mechanism 09 is set in the disinfection tank 03, and the liquid chlorine is fully contacted with the medical waste water through the stirring mechanism 09 to carry out thorough disinfection and sterilization, and finally the water after filtration and sterilization is discharged through the drain port 11.

Specifically, the stirring mechanism 09 includes a driving motor 17, a stirring shaft 18 and a screw blade 19 arranged on the stirring shaft 18. The upper end of the stirring shaft 18 is connected to the output shaft of the driving motor 17 through a coupling, and the lower end of the stirring shaft 18 extends to the In the tank 03, the working principle of the stirring mechanism 09 is as follows: the driving motor 17 drives the stirring shaft 18 to rotate and drives the spiral blade 19 arranged on the stirring shaft 18 to rotate, so that the liquid chlorine introduced into the disinfection tank 03 is fully contacted with the medical wastewater. reaction, and conduct thorough disinfection and sterilization; the provided spiral blade 19 has a better stirring effect than the wave-shaped blade in the prior art.

In addition, the stirring shaft 18 is provided with a hollow cavity, and the screw blade 19 is provided with several through holes 20 communicating with the hollow cavity. The chlorine port 10 is passed into the hollow cavity of the stirring shaft 18, and during the stirring process of the driving motor 17 driving the stirring shaft 18, the liquid chlorine in the hollow cavity flows into the disinfection through the several through holes 20 on the screw blade 19 due to the centrifugal force. In the tank 03, and fully contact and react with the medical wastewater in the disinfection tank 03, so as to achieve the effect of rapid disinfection and sterilization.

In this example, a plurality of water spray ports 14 on the medical wastewater inlet pipe 13 are sprayed into the sedimentation tank 02, and the sprayed medical wastewater is contacted and reacted with the flocculant sprayed by the spiral nozzle 16, and the flocculation sedimentation method is used to suspend the wastewater in the wastewater. The particles lose their stability, and the colloidal particles agglomerate with each other, causing the particles to increase to form flocs. After the flocs grow to a certain volume, they are separated from the water phase under the action of gravity and precipitate into the sewage collection tank 01, from the bottom of the sewage collection tank 01. The decontamination port 04 is discharged; this technical solution can realize the precipitation of the suspended solids in the medical waste water and then filter, can remove a large amount of suspended solids in the filtered medical waste water, and will not block the filter mechanism, prolong the service life of the filter mechanism, and Solve the problem that the existing filter mechanism is easy to cause difficult cleaning.

In addition, the suspended solids of the medical waste water after being precipitated by the flocculant are greatly reduced, which can reduce the filtration load of the large mesh fence 05 and the small mesh fence 06; the medical waste water filtered by the large mesh fence 05 and the small mesh fence 06 passes through the communication port 08 Enter into the disinfection tank 03, and carry out disinfection and sterilization by the liquid chlorine introduced in the disinfection tank 03; and a stirring mechanism 09 is provided in the disinfection tank 03; The spiral blade 19 above rotates, and the liquid chlorine introduced into the hollow cavity of the stirring shaft 18 is sprayed into the disinfection tank 03 through the through hole 20 on the screw blade 19 with the rotation of the stirring shaft 18, so as to pass into the disinfection tank 03. The liquid chlorine of the filtrate is fully contacted and reacted with the medical wastewater to carry out thorough disinfection and sterilization, and finally the water after filtration and sterilization is discharged through the drainage port 11.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. The patent protection scope of the present utility model is subject to the claims. Equivalent structural changes should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a medical wastewater purification device, is including gathering dirty pond, settling tank and disinfection pond, it is provided with the scrubbing mouth to gather dirty pond below, it sets up in the settling tank below to gather dirty pond, be equipped with big net fence, little net fence and lid on the settling tank, little net fence right side upper portion is provided with the intercommunication mouth, the intercommunication mouth sets up between settling tank and disinfection pond, be provided with rabbling mechanism and liquid chlorine mouth on the disinfection pond, and disinfect pond below and be provided with the outlet and set up the valve in the outlet, its characterized in that: the improved sewage treatment device is characterized in that a water inlet pipeline is wound on the inner wall of the settling tank and fixed on the inner wall of the settling tank in a spiral manner, a plurality of water spray nozzles are arranged on one side, away from the inner wall of the settling tank, of the water inlet pipeline, a flocculating agent injection port is arranged at the bottom of the settling tank, and the flocculating agent injection port penetrates through the sewage collecting tank and is communicated with the settling tank.

2. The medical wastewater purification apparatus according to claim 1, wherein: and a spiral nozzle is arranged at one end of the flocculating agent injection port extending into the settling tank.

3. The medical wastewater purification apparatus according to claim 1, wherein: and the water spray openings are all provided with downward inclined chamfers, and the angle of 30 degrees < & <70 degrees.

4. The medical wastewater purification apparatus according to any one of claims 1 to 3, wherein: the large net fence is of a double-layer structure and is horizontally fixed at the upper part of the settling tank.

5. The medical wastewater purification apparatus according to any one of claims 1 to 3, wherein: the small net fence is of a hemispherical structure, and the net port of the small net fence is smaller than that of the large net fence.

6. The medical wastewater purification apparatus according to claim 1, wherein: the sewage collecting pool is of an inverted conical structure and is buried underground.

7. The medical wastewater purification apparatus according to claim 1, wherein: the stirring mechanism comprises a driving motor, a stirring shaft and a spiral blade arranged on the stirring shaft, one end of the stirring shaft is connected with an output shaft of the driving motor through a coupler, and the other end of the stirring shaft extends into the disinfection tank.

8. The medical wastewater purification apparatus according to claim 7, wherein: the stirring shaft is internally provided with a hollow cavity, the spiral blades are provided with a plurality of through holes communicated with the hollow cavity, and the liquid chlorine port is arranged at the upper end of the stirring shaft.

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