Medical wastewater purification device
Technical Field
The utility model relates to the technical field of medical equipment, more specifically relates to a medical wastewater purification device.
Background
The hospital wastewater is mainly various toxic and harmful bacteria wastewater generated in the operation process of medical institutions, the water quality of the wastewater varies with the properties and scale of different hospitals and the regions where the hospitals are located, the daily sewage discharge amount of each sickbed is about 200-plus-1000L, the sources and components of the wastewater are complex, the wastewater mainly comprises the wastewater discharged from diagnosis and treatment rooms, sickrooms, pathological anatomy rooms, radiation rooms, X-ray photography rooms, operating rooms and the like, and a small amount of wastewater discharged from offices, washes and the like is also contained. The hospital wastewater contains a large amount of pathogenic bacteria, viruses and chemical agents and has the characteristics of pollution, acute infection and latent infection; the main pollutants contained in medical wastewater are: pathogens, organic solvents, acids, alkalis, organic matters, floating matters, suspended matters, radioactive pollutants and the like, wherein the total bacteria content in untreated raw sewage is more than 8-10/mL; hospital wastewater is one of the main sources of toxic risks in water environments, and toxic pollutants enter aquatic ecological balance and drinking water sources to cause potential negative effects. The national ministry of environmental protection and quality alkalinity inspection and quarantine jointly release the medical institution pollutant discharge standard of 'medical institution water pollution discharge standard' (GB18466-2005) in 7 months in 2005, the standard puts forward the requirements of comprehensive control on pollutants such as medical institution sewage, waste gas generated by sewage treatment stations, sludge and the like, and emphasizes the disinfection effect on the sewage containing pathogens.
The application number is CN 201720008904.8's patent discloses a medical waste water environmental protection purifier, including gathering dirty pond, settling tank and disinfection pond, gather dirty pond including scrubbing mouth and water inlet, the water inlet passes and gathers dirty pond and link to each other with the settling tank, be equipped with big net fence, little net fence and lid on the settling tank, the right side upper portion of little net fence is equipped with the intercommunication mouth, the intercommunication mouth is fixed between settling tank and disinfection pond, the fixed motor and the liquid chlorine mouth right side that is equipped with in top of disinfection pond are fixed with the outlet, the sub-unit connection of motor has the pivot, be fixed with the blade in the pivot, the outlet is equipped with the valve. The technical scheme can realize that the medical wastewater is treated at the source, filtered, precipitated and sterilized, but the technical scheme still has the following defects: suspended matters in the medical wastewater are directly filtered through the large net fence and the small net fence without being precipitated, so that the large net fence and the small net fence are blocked and difficult to clean; secondly, the fluidity of the sewage after the sewage is recycled is influenced, and secondary pollution is caused.
SUMMERY OF THE UTILITY MODEL
In view of the above the not enough of prior art, the utility model aims to provide a medical wastewater purification device can realize that the suspended solid in the medical wastewater deposits earlier and then filters, avoids blockking up filtering mechanism.
The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:
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 disinfection pond below is provided with the outlet and sets up the valve on the outlet, around being equipped with the inlet channel on the settling tank inner wall, the inlet channel is the heliciform and fixes on the inner wall of settling tank, the inlet channel is provided with a plurality of water jet on one side of keeping away from settling tank inner wall, the settling tank bottom is equipped with flocculating agent injection port, flocculating agent injection port passes and gathers dirty pond and settling tank intercommunication.
The utility model discloses basic scheme's theory of operation does: when the structure is adopted to treat the medical wastewater, the medical wastewater is sprayed into the settling tank through the plurality of water spraying ports on the water inlet pipeline, the bottom of the settling tank is provided with a flocculating agent injection port, a flocculating agent is injected into the settling tank through the flocculating agent injection port, the suspended particles in the wastewater lose stability through a flocculation precipitation method, the particles are mutually coagulated to increase the particles to form a flocculating body, and the flocculating body grows to a certain volume and then is separated from a water phase under the action of gravity for precipitation, so that a large amount of suspended matters in the medical wastewater are removed, and are precipitated into the sewage collecting tank through the action of gravity and discharged through a sewage removing port arranged below the sewage collecting tank; therefore, a large amount of suspended matters in the medical wastewater cannot be filtered by the large net fence and the small net fence, the problem of blockage of the large net fence and the small net fence can be avoided, and the problems of influence on the flowability of sewage and secondary pollution can be avoided; this technical scheme can realize that the suspended solid in the medical waste water deposits earlier and then filters, can detach a large amount of suspended solids in the filterable medical waste water to block up filtering mechanism, prolong filtering mechanism's life, and solve current filtering mechanism and cause the problem that is difficult to the clearance easily, the practicality is good.
In addition, the medical wastewater filtered by the large net fence and the small net fence enters the disinfection tank through the communication port and is disinfected and sterilized by liquid chlorine introduced into the disinfection tank; and set up rabbling mechanism in the disinfection pond, make liquid chlorine and medical wastewater fully contact through rabbling mechanism, carry out thorough disinfection and sterilization, the water rethread outlet discharge after filtering and sterilizing at last.
Furthermore, a spiral nozzle is arranged at one end of the flocculating agent injection port extending into the settling tank. The spiral nozzle sprays upwards, and the jet angle scope can be 50-70, can make the medical wastewater that sprays out through a plurality of water jet ports fully contact with the flocculating agent that the spiral nozzle sprays out to through the abundant contact reaction of flocculation and precipitation, medical wastewater can directly deposit to gathering in the dirty pond under the filterable condition of big net fence and little net fence, and the inlet channel is fixed on the inner wall of setting tank, and the flocculus of sediment can not twine on the inlet channel, and the practicality is good.
Further, a chamfer angle &whichis inclined downwards is arranged at each of the plurality of water spray openings, and the angle of 30 degrees < & <70 degrees. The sewage that makes a plurality of water jet spray out can follow the downward chamfer of slope earlier with the flocculating agent reaction after through big net fence and little net fence filtration, and the water jet of co-altitude can set up different slope chamfers, the realization of controllability sprays the medical sewage and the flocculating agent reaction position that come to the sediment position of control floccule.
Furthermore, the large net fence is of a double-layer structure and is horizontally fixed at the upper part of the settling tank. Suspended matters which are not reacted by the flocculating agent can be filtered by the double-layer structure of the large net fence, so that the effect of removing the suspended matters in the medical wastewater is ensured.
Furthermore, the small net fence is of a hemispherical structure, and the net opening of the small net fence is smaller than that of the large net fence. The small net fence with the hemispherical structure and arranged at the upper end of the settling tank can increase the filtering area of the filtering mechanism, and further filters medical wastewater to improve the filtering effect.
Furthermore, the sewage collecting pool is of an inverted conical structure and is buried underground. The decontamination opening is arranged at the bottom of the sewage collection tank, so that floccules precipitated in the sewage collection tank can slide to the bottom of the sewage collection tank under the action of gravity and are discharged through the decontamination opening.
Further, the stirring mechanism comprises a driving motor, a stirring shaft and a spiral blade arranged on the stirring shaft, wherein 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. The driving motor drives the stirring shaft to rotate so as to drive the spiral blade arranged on the stirring shaft to rotate, so that the liquid chlorine introduced into the disinfection tank is in full contact reaction with the medical wastewater, and thorough disinfection and sterilization are performed; compared with the wave-shaped blade in the prior art, the spiral blade has better stirring effect.
Furthermore, a hollow cavity is arranged in the stirring shaft, a plurality of through holes communicated with the hollow cavity are formed in the spiral blade, and the liquid chlorine port is formed in the upper end of the stirring shaft. Liquid chlorine lets in the hollow cavity of (mixing) shaft through setting up the liquid chlorine mouth on the (mixing) shaft to at driving motor drive (mixing) shaft stirring in-process, the liquid chlorine of hollow cavity flows into to the disinfection pond in through the several through-hole on the helical blade owing to the effect of centrifugal force, and with the abundant contact reaction of medical waste water in the disinfection pond, in order to reach quick disinfection's effect.
As mentioned above, the utility model has the following beneficial effects:
1. the utility model discloses the inlet channel is around establishing on the inner wall of setting tank, and medical waste water at first reacts with the flocculating agent in the setting tank to make the suspended particle in the waste water lose stability through the flocculation and precipitation method, the micelle looks mutual condensation makes the particle increase, forms the flocculating constituent, and the flocculating constituent is grown and is broken away from the aqueous phase under the action of gravity and deposit after certain volume, thereby removes a large amount of suspended solids in the medical waste water, and a large amount of suspended solids deposit to gather in the dirty pond through the action of gravity, and discharge through the scrubbing mouth that sets up below gathering the dirty pond; therefore, a large amount of suspended matters in the medical wastewater can not be filtered by the large net fence and the small net fence, the problem of blockage of the large net fence and the small net fence can be avoided, and the problems of the flowability of sewage and secondary pollution can not be influenced.
2. The medical wastewater in the utility model is sprayed into the settling tank through a plurality of water spray nozzles on the water inlet pipeline; and the flocculating agent injection port is provided with the spiral nozzle stretching into one end of the settling tank, so that the medical wastewater sprayed from the plurality of water spraying ports can be fully contacted with the flocculating agent sprayed from the spiral nozzle and is fully reflected through flocculation and precipitation, the medical wastewater can be directly precipitated into the sewage collecting tank under the condition that the medical wastewater is not filtered by the large net fence and the small net fence, and the filtering load of the large net fence and the small net fence is reduced.
3. The utility model discloses well a plurality of water jet departments all are provided with the decurrent chamfer of slope &, and 30 < & <70 for sewage that a plurality of water jet spray come out can follow the decurrent chamfer of slope earlier with the flocculating agent reaction after filter through big net fence and little net fence, and the water jet of co-altitude can set up different slope chamfers, medical sewage and flocculating agent reaction position that the realization of controllability sprayed out, and the sedimentation position of the floccule of control sediment.
Drawings
FIG. 1 is a schematic sectional view of a medical wastewater purification apparatus according to the present invention;
fig. 2 is a schematic view of a water inlet pipe in the medical wastewater purification device of the utility model.
Reference numerals: 01-sewage gathering tank, 02-settling tank, 03-disinfection tank, 04-sewage removing port, 05-large net fence, 06-small net fence, 07-cover, 08-communicating port, 09-stirring mechanism, 10-liquid chlorine port, 11-water discharging port, 12-valve, 13-water inlet pipeline, 14-water spraying port, 15-flocculating agent injection port, 16-spiral nozzle, 17-driving motor, 18-stirring shaft, 19-spiral blade and 20-through hole.
Detailed Description
For a better understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and the following embodiments.
Referring to fig. 1 and 2, the present embodiment provides a medical wastewater purification apparatus, including a dirt collecting tank 01, a settling tank 02 and a disinfection tank 03, wherein a cover 07 is fastened above the settling tank 02, the dirt collecting tank 01 is disposed below the settling tank 02, the dirt collecting tank 01 is of an inverted cone-shaped structure and is buried underground, a dirt removing opening 04 is disposed below the dirt collecting tank 01, and the dirt removing opening 04 is disposed at the bottom of the dirt collecting tank 01, so that sewage discharged from the dirt collecting tank 01 can slide to the bottom of the dirt collecting tank 01 due to gravity and can be discharged through the dirt removing opening 04.
Furthermore, a water inlet pipeline 13 is wound on the inner wall of the settling tank 02, the water inlet pipeline 13 is welded on the inner wall of the settling tank 02 in a spiral shape, a plurality of water spray ports 14 are formed in one side, away from the inner wall of the settling tank 02, of the water inlet pipeline 13, a flocculating agent injection port 15 is formed in the bottom of the settling tank 02, the flocculating agent injection port 15 penetrates through the sewage collecting tank 01 to be communicated with the settling tank 02, flocculating agents are injected into the settling tank 02 through the flocculating agent injection port 15, suspended particles in the waste water lose stability through a flocculation precipitation method, colloidal particles are mutually coagulated to increase the particles to form flocculating constituents, the flocculating constituents grow to a certain volume and then separate from a water phase to precipitate under the action of gravity, so that a large amount of suspended matters in the medical waste water are removed, and the large amount of suspended matters are precipitated into the sewage collecting tank 01 under the action of gravity and discharged through a; therefore, a large amount of suspended matters in the medical wastewater cannot be filtered by the filtering mechanism, the problem that the filtering machine is blocked can be avoided, and the problems of the flowability of the sewage and secondary pollution cannot be influenced.
Specifically, a spiral nozzle 16 is arranged at one end of the flocculating agent injection port 15 extending into the settling tank 02, the spraying direction of the spiral nozzle 16 is upward, the spraying angle range can be 50-70 degrees, and the medical wastewater sprayed from the plurality of water spraying ports 14 can be fully contacted with the flocculating agent sprayed from the spiral nozzle 16 and fully contacted and reacted through flocculating and settling.
Further, be equipped with filtering mechanism on the setting tank 02, filtering mechanism includes big net fence 05 and little net fence 06, and big net fence 05 is bilayer structure, and the level is fixed in the upper portion of setting tank 02, and the suspended solid accessible bilayer structure's that does not pass through flocculating agent reaction big net fence 05 filters, guarantees the effect of getting rid of suspended solid in the medical waste water.
In addition, the small net fence 06 is of a hemispherical structure, and the net opening of the small net fence 06 is smaller than that of the large net fence 05. The little net bars fence 06 of the hemispherical structure who sets up in setting 02 upper end can increase filtering mechanism's filter area, further filters medical waste water, improves the filter effect. This technical scheme can realize that the suspended solid in the medical waste water deposits earlier and then filters, can detach a large amount of suspended solids in the filterable medical waste water to block up filtering mechanism, prolong filtering mechanism's life, and solve current filtering mechanism and cause the problem that is difficult to the clearance easily, the practicality is good.
Further, the water spray ports 14 are provided with downward inclined chamfers and 30 degrees < & <70 degrees, and the chamfer angles of the water spray ports 14 are specifically set according to different heights of the water spray ports 14, so that sewage sprayed out of the water spray ports 14 can react with a flocculating agent along the downward inclined chamfers and then is filtered through the large net fence 05 and the small net fence 06, the water spray ports 14 at different heights can be provided with different inclined chamfers, the reaction positions of the sprayed medical sewage and the flocculating agent can be realized in a controllable manner, and the sedimentation positions of precipitated floccules can be controlled.
Further, a communication port 08 is formed in the upper portion of the right side of the small net fence 06, the communication port 08 is arranged between the settling tank 02 and the disinfection tank 03, a stirring mechanism 09 and a liquid chlorine port 10 are arranged on the disinfection tank 03, a water outlet 11 and a valve 12 arranged on the water outlet 11 are arranged below the disinfection tank 03, and medical wastewater filtered by the large net fence 05 and the small net fence 06 enters the disinfection tank 03 through the communication port 08 and is disinfected and sterilized through liquid chlorine introduced into the disinfection tank 03; and set up rabbling mechanism 09 in the disinfection pond 03, make liquid chlorine and medical wastewater fully contact through rabbling mechanism 09, carry out thorough disinfection and sterilization, the water rethread outlet 11 discharge after the last filtration sterilization.
Specifically, rabbling mechanism 09 includes driving motor 17, (mixing) shaft 18 and sets up spiral blade 19 on (mixing) shaft 18, and the output shaft of (mixing) shaft 18 upper end through shaft coupling and driving motor 17, in 18 lower extremes of (mixing) shaft extended to disinfection pond 03, the theory of operation of rabbling mechanism 09 was: the driving motor 17 drives the stirring shaft 18 to rotate so as to drive the spiral blade 19 arranged on the stirring shaft 18 to rotate, so that the liquid chlorine introduced into the disinfection tank 03 is in full contact reaction with the medical wastewater to carry out thorough disinfection and sterilization; the spiral blade 19 that sets up compares the wavy blade stirring effect among the prior art better.
In addition, be equipped with hollow chamber in the (mixing) shaft 18, and be provided with the through-hole 20 of several and hollow chamber intercommunication on the helical blade 19, liquid chlorine mouth 10 sets up in (mixing) shaft 18 upper end, liquid chlorine lets in the hollow intracavity of (mixing) shaft 18 through the liquid chlorine mouth 10 that sets up on (mixing) shaft 18, and at driving motor 17 drive (mixing) shaft 18 stirring in-process, liquid chlorine in the hollow intracavity flows into to disinfection pond 03 in through several through-hole 20 on the helical blade 19 owing to the effect of centrifugal force, and fully contact reaction with the medical wastewater in the disinfection pond 03, in order to reach quick disinfection's effect.
In this example, a plurality of water nozzles 14 on the medical wastewater inlet pipe 13 are sprayed into the sedimentation tank 02, the sprayed medical wastewater is in contact reaction with the flocculating agent sprayed by the spiral nozzle 16, the suspended particles in the wastewater lose stability by a flocculation sedimentation method, colloidal particles are mutually agglomerated to enlarge the particles to form a flocculating constituent, and the flocculating constituent grows to a certain volume and then is separated from the water phase under the action of gravity to be precipitated into the sewage collection tank 01 and is discharged from a sewage removal port 04 below the sewage collection tank 01; this technical scheme can realize that the suspended solid in the medical waste water deposits earlier and then filters, can detach a large amount of suspended solids in the filterable medical waste water to block up filtering mechanism, prolong filtering mechanism's life, and solve current filtering mechanism and cause the problem that is difficult to the clearance easily.
In addition, the medical wastewater precipitated by the flocculating agent has a great reduction of suspended matters, and the filtering load of the large net fence 05 and the small net fence 06 can be reduced; medical wastewater filtered by the large net fence 05 and the small net fence 06 enters the disinfection tank 03 through the communication port 08, and is disinfected and sterilized by liquid chlorine introduced into the disinfection tank 03; and a stirring mechanism 09 is arranged in the disinfection tank 03; specifically, the driving motor 17 drives the stirring shaft 18 to rotate so as to drive the spiral blade 19 arranged on the stirring shaft 18 to rotate, 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 spiral blade 19 along with the rotation of the stirring shaft 18, so that the liquid chlorine introduced into the disinfection tank 03 is in full contact reaction with the medical wastewater, the disinfection is performed thoroughly, and finally the water after the filtration and sterilization is discharged through the water outlet 11.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.