CN212293221U

CN212293221U - Medical wastewater treatment system

Info

Publication number: CN212293221U
Application number: CN202020724432.8U
Authority: CN
Inventors: 王强; 段伟
Original assignee: Shenzhen Reamem Membrane Technology Co ltd
Current assignee: Shenzhen Reamem Membrane Technology Co ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2021-01-05
Anticipated expiration: 2030-05-06

Abstract

The utility model discloses a medical wastewater treatment system, including a plurality of processing ponds and gas recovery pipeline, set up sterilizer and the aspiration pump that sets up along the direction of gas flow in gas recovery pipeline gas outlet one end, each processing pond top pass through the valve with gas recovery pipeline connects. The utility model discloses combine traditional preliminary treatment technology, adopt MBR main part to handle and ozone virus killing technology to through intelligent sensor and thing networking, realize safe and reliable's sewage treatment system.

Description

Medical wastewater treatment system

Technical Field

The utility model relates to a complete set of equipment for medical wastewater treatment.

Background

Unlike conventional domestic sewage, medical wastewater contains a large amount of pathogenic microorganisms, and thus although biochemical property of the wastewater is good, biological safety of the wastewater is another problem that cannot be ignored, and thus cannot be treated by a conventional treatment method.

When the existing treatment system is used for treating medical wastewater, the adopted treatment method is to utilize the traditional biochemical treatment process and carry out sealing treatment on the main treatment unit, so that the aim of preventing toxic gas from diffusing is achieved, but under the action of the pressure of the wastewater, the waste gas in the treatment unit can cause leakage, so that a serious safety problem is caused.

Particularly, the recent world wide epidemic diseases have been abused, and medical wastewater generated by many infected people can easily infect other healthy people through aerosol and fecal oral transmission ways if the medical wastewater is not treated properly, so that how to provide a medical wastewater treatment system which has relatively low production requirements and can be put into application quickly is a technical problem to be solved in the industry.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the safety performance of medical wastewater treatment equipment is relatively low in the prior art, the utility model provides a medical wastewater treatment system.

The utility model provides a medical wastewater treatment system, including a plurality of processing ponds and gas recovery pipeline, set up sterilizer and the aspiration pump that sets up along the gas flow direction in gas recovery pipeline gas outlet one end, each processing pond top pass through the valve with gas recovery pipeline connects.

Preferably, the medical wastewater treatment system further comprises a sludge discharge pipeline and a chlorine dioxide generator arranged at an outlet of the sludge discharge pipeline, and the bottom of each treatment tank is connected with the sludge discharge pipeline through a valve.

In one embodiment, the treatment tank comprises a pretreatment tank, a grating, an anoxic tank, an aerobic tank, an MBR membrane tank and a water production tank which are connected in sequence, and an ozone generator is arranged in the water production tank.

Furthermore, a membrane permeation liquid pump and a water quality sensor which are connected in sequence are arranged on a water outlet pipeline of the MBR membrane tank, and the water outlet pipeline of the MBR membrane tank is respectively connected with a first three-way valve which is connected with the water production tank and the anoxic tank.

Further, the membrane permeation liquid pump is connected with the MBR membrane tank through a second three-way valve arranged on a water outlet pipeline, the water production tank is connected with the second three-way valve through a backwashing pump, a pressure sensor is arranged between the membrane permeation liquid pump and the second three-way valve, and a flow sensor is arranged between the first three-way valve and the water quality sensor.

Further, the device also comprises an ambient temperature sensor and a heater arranged in the water production tank.

And the device further comprises a dosing pump and a dosing tank which are connected between the backwashing pump and the second three-way valve.

In one embodiment, the pretreatment tank is a flocculation sedimentation tank, or the pretreatment tank comprises a three-grid septic tank and a flocculation sedimentation tank.

Further, the aerobic tank is connected with an aeration fan, and a dissolved oxygen sensor is arranged in the aerobic tank; and the MBR membrane tank flows back to the anoxic tank and/or the aerobic tank through a sludge reflux pump.

Preferably, the system further comprises a controller and a wireless transceiver, the wireless transceiver transmits detection results of all sensors in the medical wastewater treatment system to a mobile terminal of a user, receives an instruction input by the user of the mobile terminal, and the controller controls any pump and any valve in the medical wastewater treatment system according to the instruction.

The utility model discloses combine traditional preliminary treatment technology, adopt MBR technology to handle to a series of intelligent sensor have been arranged at each processing unit, realize going out water quality of water safety up to standard, the purpose of mud and abandonment safety emission. In addition, the system adopts a highly automated control system, so that manual operation is reduced to the greatest extent, and the risk of virus infection is reduced. Based on the technical scheme of the utility model for the play water quality of water of handling back medical waste water is higher, and the poisonous and harmful gas that whole processing procedure can not produce, the solid waste who discharges simultaneously has also carried out disinfection treatment.

Drawings

The invention is explained in more detail below with reference to exemplary embodiments and the accompanying drawings, in which:

fig. 1 is a flow chart of the invention for electing the master communication module.

Detailed Description

The principles and embodiments of the present invention are described in detail below with reference to the accompanying drawings.

As shown in figure 1, the utility model discloses a medical wastewater treatment system specifically has pretreatment tank 1, oxygen deficiency pond 3, good oxygen pond 4, MBR membrane cisterna 5 and product water tank 6 including a plurality of treatment ponds that connect in order, wherein pretreatment tank 1 and oxygen deficiency pond between be equipped with grid 2, will thick suspended solid through mechanical grid damps down, the solid debris that damps down will be through unified emission after the disinfection is handled.

The aforesaid preliminary treatment pond 1, the oxygen deficiency pond 3, good oxygen pond 4, MBR membrane cisterna 5 all is confined processing unit, these confined processing unit top tops are equipped with the gas recovery pipeline, preliminary treatment pond 1, the oxygen deficiency pond 3, good oxygen pond 4, MBR membrane cisterna 5's top is respectively through pipeline and valve and gas recovery tube coupling, still be equipped with sterilizer 9 and aspiration pump 10 in gas recovery pipeline gas outlet one end, gas (waste gas) from each processing pond extraction goes up carry out the bacterial treatment back through sterilizer 9 under the effect of aspiration pump earlier, discharge through the pipeline of aspiration pump 10 rear end again, the sterilizer of this embodiment adopts ultraviolet sterilizer.

In addition, the bottom of the pretreatment tank 1, the anoxic tank 3, the aerobic tank 4 and the MBR membrane tank 5 is provided with a sludge discharge pipeline, the bottom of the pretreatment tank 1, the anoxic tank 3, the bottom of the aerobic tank 4 and the bottom of the MBR membrane tank 5 are respectively connected with the sludge discharge pipeline through a pipeline and a valve, a chlorine dioxide generator 8 is arranged at the outlet of the sludge discharge pipeline to sterilize and disinfect the solid waste discharged by each treatment tank, and then the solid waste without bacteria and viruses is discharged from the outlet of the sludge discharge pipeline.

The raw water will treat pretreatment tank 1 of level sensor 12 through at first, and in this embodiment, pretreatment tank 1 divide into two kinds, and when the raw water through pretreatment tank 1 does not contain excrement and urine, pretreatment tank 1 adopts the flocculation and precipitation pond, and when the raw water through pretreatment tank 1 contains excrement and urine, pretreatment tank 1 includes three format septic tanks and flocculation and precipitation pond. In addition, in practical application, a person skilled in the art can select a proper composition unit of the pretreatment tank according to the actual wastewater components of the medical wastewater.

The pretreated effluent water passes through a grating 2, coarse suspended matters are cut off through a mechanical grating, and the cut-off solid impurities are subjected to sterilization treatment and then are uniformly discharged.

The effluent filtered by the grating 2 enters a closed anaerobic tank 3, a closed aerobic tank 4 (aeration tank) and a closed MBR membrane tank 5, and the gas generated in the wastewater treatment process of each closed treatment tank is collected uniformly, sucked by a suction pump 10, sterilized by an ultraviolet sterilizer and then mixed with the produced water of a water production tank 6 for discharge.

The aerobic tank 4 (aeration tank) is internally provided with a liquid level sensor 42 and a dissolved oxygen sensor 43, and a user or a controller for realizing automatic control can control the liquid level of the whole medical wastewater treatment system through the liquid level sensor 42 so as to ensure that the system maintains a relatively stable liquid level. The aerobic tank 4 is connected with an aeration fan 41, the dissolved oxygen sensor 43 is associated with the aeration fan 41, and a user can control the opening and closing of the aeration fan 41 according to the detection result of the dissolved oxygen sensor 43. Or the controller automatically controls the opening and closing of the aeration fan 41 according to the detection result of the dissolved oxygen sensor 43, the dissolved oxygen concentration of the general aeration tank is maintained between 2.5 and 3.5mg/L, and the start and stop of the aeration fan are intelligently controlled by the dissolved oxygen sensor, so that the oxygen quantity required by the biochemistry of the system can be maintained, the energy consumption can be reduced, and the operation cost can be saved.

A liquid level sensor 58 is arranged in the MBR membrane tank 5, a pipeline is arranged on the top of the MBR membrane tank 5 and flows back to the anoxic tank 3 and/or the aerobic tank 4 through a sludge return pump 54 arranged on the pipeline, and the specific flow back to which biochemical tank can be flexibly adjusted according to the actual operation condition.

A second three-way valve is arranged on a water outlet pipeline of the MBR membrane pool 5, a first port of the first three-way valve is connected with the water outlet pipeline of the MBR membrane pool 5, a pressure sensor 55, a membrane permeation liquid pump 52, a water quality sensor 56 and a flow sensor 57 are sequentially connected with a second port of the first three-way valve through pipelines, and a pipeline with a backwashing pump 53 and a water outlet of the water production tank 6 is connected with a third port of the first three-way valve to form a backwashing loop from the water production tank 6 to the MBR membrane pool.

The first port of second three-way valve is connected behind flow sensor 57, and the second port of second three-way valve passes through pipe connection to the oxygen deficiency pond 3, forms a return circuit of MBR membrane cisterna 5 to oxygen deficiency pond 3, and the third port of second three-way valve is connected to producing water tank 6.

The system produced water passing through the MBR membrane tank 5 is pumped by the membrane permeation liquid pump 52, a user or a controller judges whether the water quality (COD, TOC, TP, TN, NH 4-N) reaches the standard or not by the detection result of the water quality sensor 56, if the water quality reaches the standard, the third port of the second three-way valve is controlled to be opened so that the treated water enters the water production tank 6, and the treated water is discharged after being disinfected by the ozone disinfector 62 arranged in the water production tank. If the water quality does not reach the standard, the second port of the second three-way valve is opened to make the water flow back to the anaerobic tank 3 for retreatment.

The pressure sensor 55 and the flow sensor 57 on the MBR water production pipeline can be used for a user or a controller to judge the operation condition of the MBR membrane 59 in the MBR membrane tank 5, judge whether the MBR membrane 59 is polluted and blocked, and judge whether the MBR membrane 59 needs to be cleaned.

In addition, when the MBR membrane tank 5 normally produces water, backwashing is required to be carried out at intervals, and the produced water in the water production tank 6 can be utilized to carry out reverse cleaning through the backwashing pump 53.

The medical wastewater treatment system is also provided with a dosing tank 7, the dosing tank 7 is connected to a pipeline between the backwashing pump 53 and the second three-way valve through a dosing pump 71, and when the detection pressure of the pressure sensor 55 is greater than or equal to a preset pressure threshold value, a user or a controller adds the liquid medicine of the dosing tank 7 into the water production tank 6 through the dosing pump 71 for soaking and flushing. The controller may run a preset program, and automatically activate the chemical cleaning step when the pressure detected by the pressure sensor 55 is equal to or higher than a preset pressure threshold, and inject the chemical agent in the chemical feed tank 7 into the MBR membrane tank 5 by the chemical feed pump 71 during the chemical cleaning, and perform the soaking cleaning according to the concentration and time set by the program.

The medical wastewater treatment system is also provided with an ambient temperature sensor, a heater 61 is arranged in the water production tank 6, and a user or a controller can control the heater 61 to heat water in the water production tank 6 according to the detection result of the ambient temperature sensor. If the ambient temperature is lower than 15 ℃ in winter, if the water temperature of the water production tank 6 is lower, the water temperature is heated to 30 ℃ through the built-in heater 61, then chemical cleaning is carried out, and the cleaning effect is better.

Additionally, the utility model discloses a medical wastewater treatment system can also set up a wireless transceiver module, and this wireless transceiver module can be a part of controller, also can be independent and the controller, and the user can come to wireless transceiver module input instruction through mobile terminal such as cell-phone, ipad, computer, controls arbitrary pump and valve among the medical wastewater treatment system. Meanwhile, the wireless transceiver module can also send the detection results of all sensors in the medical wastewater treatment system to the mobile terminal of the user. For example, a medical wastewater treatment system automatically collects all water quality data and operation data and sends the data to a user, every 365 days is a complete data cycle, the collected data is comprehensively analyzed through an APP, and the operation parameters of main equipment of the system are optimized as follows: the operating frequency of the aeration fan of the aerobic tank, the aeration fan of the MBR membrane tank, the sludge reflux pump, the membrane permeation liquid pump and the like. The system optimization aims to reduce the energy consumption of the system to the maximum extent and reduce the pollution risk of the MBR membrane on the premise of realizing stable standard reaching of produced water and the like.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The medical wastewater treatment system comprises a plurality of treatment pools and is characterized by further comprising a gas recovery pipeline, a sterilizer (9) and an air pump (10), wherein the sterilizer (9) and the air pump (10) are arranged at one end of a gas outlet of the gas recovery pipeline along the gas flowing direction, and the top of each treatment pool is connected with the gas recovery pipeline through a valve.

2. The medical wastewater treatment system according to claim 1, further comprising a sludge discharge line, a chlorine dioxide generator (8) provided at an outlet of the sludge discharge line, and the bottom of each treatment tank is connected to the sludge discharge line through a valve.

3. The medical wastewater treatment system according to claim 1, wherein the treatment tank comprises a pretreatment tank (1), a grid (2), an anoxic tank (3), an aerobic tank (4), an MBR membrane tank (5) and a water production tank which are connected in sequence, and an ozone generator (63) is arranged in the water production tank (6).

4. The medical wastewater treatment system according to claim 3, wherein the water outlet pipeline of the MBR membrane tank (5) is provided with a membrane permeate pump (52) and a water quality sensor (56) which are connected in sequence, and the water outlet pipeline of the MBR membrane tank (5) is respectively connected with the water production tank (6) and the anoxic tank (3) by a first three-way valve.

5. The medical wastewater treatment system according to claim 4, wherein the membrane permeate pump (52) is connected to the MBR membrane tank (5) by a second three-way valve provided on the water outlet line, the water production tank (6) is connected to the second three-way valve by a backwash pump (53), a pressure sensor (55) is provided between the membrane permeate pump (52) and the second three-way valve, and a flow sensor (57) is provided between the first three-way valve and the water quality sensor (56).

6. The medical wastewater treatment system according to claim 5, further comprising an ambient temperature sensor and a heater (61) disposed in the water production tank (6).

7. The medical wastewater treatment system according to claim 5, further comprising a dosing pump (71) and a dosing tank (7) connected between the backwash pump (53) and the second three-way valve.

8. The medical wastewater treatment system according to claim 3, wherein the pretreatment tank (1) is a flocculation sedimentation tank, or the pretreatment tank (1) comprises a triple septic tank, a flocculation sedimentation tank.

9. The medical wastewater treatment system according to claim 3, wherein the aerobic tank (4) is connected to an aeration fan (41), and a dissolved oxygen sensor (43) is provided in the aerobic tank (4).

10. The medical wastewater treatment system of claim 3, further comprising a controller and a wireless transceiver, wherein the wireless transceiver transmits the detection results of all sensors in the medical wastewater treatment system to a mobile terminal of a user, receives instructions input by the user of the mobile terminal, and the controller controls any pump and valve in the medical wastewater treatment system according to the instructions.