Device for pretreating high-concentration pharmaceutical wastewater by aerobic microorganisms and high-concentration pharmaceutical wastewater treatment system

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a device for pretreating high-concentration pharmaceutical wastewater by aerobic microorganisms and a high-concentration pharmaceutical wastewater treatment system. The device comprises a tank body, a concrete base is arranged at the bottom of the tank body, an aeration stirring device is arranged in the tank body, the aeration stirring device is connected with an air bellow, the air bellow is arranged on the concrete base, and the air bellow is connected with an aeration fan outside the tank body through an aeration pipeline; an ultrasonic liquid level sensor is arranged at the top of the side wall of the tank body, a spraying device is arranged below the ultrasonic liquid level sensor, and the spraying device is electrically connected with the ultrasonic liquid level sensor; a dissolved oxygen sensor is arranged on the side wall of the tank body; a liquid inlet is formed in the bottom of the side wall of the tank body, and a liquid outlet is formed in the top of the side wall of the tank body. The aeration stirring device is adopted, aeration can be carried out in the stirring process, and then the utilization rate of dissolved oxygen is increased, so that degradation of COD in the high-concentration pharmaceutical wastewater by aerobic microorganisms can be accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a device for pretreating high-concentration pharmaceutical wastewater with aerobic microorganisms and a high-concentration pharmaceutical wastewater treatment system comprising the device. Background Art

[0002] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and shall not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in this field.

[0003] Due to the low utilization rate of raw materials and low purity of extraction in the current pharmaceutical industry production process, a large amount of highly toxic and difficult-to-degrade organic matter remains in pharmaceutical wastewater, which is bound to cause serious pollution to the environment. The toxic substances in pharmaceutical wastewater seriously endanger the survival of aquatic plants and animals, and some even inhibit the growth of bacteria, causing the self-purification ability of the water body to weaken, exacerbating the harm. Its specific characteristics are as follows: complex water quality components, high content of pollutants in wastewater, high COD value, many toxic and harmful substances, many biologically difficult to degrade substances, high salt content, very high chroma, and large amount of high-concentration waste mother liquor (150-850m 3 / t product). Pharmaceutical wastewater has strong biological toxicity and biodegradability. Its long-term presence in the environment will cause the emergence of resistance genes in the environment. Therefore, pharmaceutical wastewater must be effectively treated.

[0004] The traditional treatment method for pharmaceutical wastewater is to use physical and chemical methods, such as electrocatalytic oxidation, Fenton oxidation, iron-carbon micro-electrolysis, etc. This type of treatment method not only has high operating costs, but also produces a large amount of sludge during operation, causing secondary pollution. In addition, the pre-treated wastewater still needs to enter the anaerobic system to further reduce COD. Due to the influence of salt and toxic organic matter, the load of the anaerobic reactor is generally low. When the sewage quality fluctuates, it will also affect the anaerobic system, resulting in an increase in effluent COD.

[0005] The method of using aerobic microorganisms to mineralize high-concentration organic matter in pharmaceutical wastewater has attracted widespread attention from scientists. However, the aerobic microbial treatment device for high-concentration pharmaceutical wastewater disclosed in the prior art has low efficiency in COD degradation and cannot adjust the degradation method in time according to the pollution situation of the pharmaceutical wastewater. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a device for pretreating high-concentration pharmaceutical wastewater with aerobic microorganisms and a high-concentration pharmaceutical wastewater treatment system comprising the device.

[0007] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0008] The first aspect of the utility model provides a device for pretreating high-concentration pharmaceutical wastewater with aerobic microorganisms, comprising:

[0009] A tank body, wherein a concrete base is provided at the bottom of the tank body, an aeration and stirring device is provided in the tank body, the aeration and stirring device is connected to a bellows, the bellows is provided on the concrete base, and the bellows is connected to an aeration fan outside the tank body through an aeration pipe; an ultrasonic liquid level sensor is provided at the top of the side wall of the tank body, a spray device is provided below the ultrasonic liquid level sensor, and the spray device is electrically connected to the ultrasonic liquid level sensor; a dissolved oxygen sensor is provided on the side wall of the tank body; a liquid inlet is provided at the bottom of the side wall of the tank body, and a liquid outlet is provided at the top of the side wall of the tank body.

[0010] The second aspect of the utility model provides a high-concentration pharmaceutical wastewater treatment system, including the above-mentioned device for pretreating high-concentration pharmaceutical wastewater with aerobic microorganisms.

[0011] The beneficial effects of the utility model are:

[0012] (1) The aeration stirring device is used in the aerobic microbial pretreatment device for high-concentration pharmaceutical wastewater provided by the utility model, and aeration can be performed during the stirring process, thereby improving the utilization rate of dissolved oxygen, thereby accelerating the degradation of COD in the concentrated pharmaceutical wastewater by aerobic microorganisms. Since the pressure of the liquid increases with the increase of the depth of the liquid, the liquid pressure will affect the aeration effect of the aeration hole. In order to ensure a uniform aeration effect, the aeration holes of different liquid depths have different sizes. The greater the depth of the liquid, the larger the aeration hole.

[0013] (2) During the use of the device for aerobic microbial pretreatment of high-concentration pharmaceutical wastewater provided by the utility model, abundant foam will be generated on the surface of the wastewater. The presence of foam will hinder gas transmission, stirring and sedimentation, thereby affecting the efficiency of sewage treatment. Therefore, an ultrasonic sensor is provided in the utility model. When the foam escapes to the ultrasonic sensor warning position, the ultrasonic sensor communicates with the spray device, and then the spray device will start automatically to eliminate the foam, thereby accelerating the degradation of COD in the concentrated pharmaceutical wastewater by aerobic microorganisms.

[0014] (3) Since the composition of pharmaceutical wastewater is complex and changeable, when the metabolic activity of microorganisms is inhibited by toxic wastewater, the rate of dissolved oxygen consumption in the tank decreases, and the generated biological heat decreases, resulting in a significant increase in dissolved oxygen and a decrease in temperature. At this time, when the dissolved oxygen sensor detects a significant increase in dissolved oxygen, and the temperature sensor simultaneously detects a significant drop in temperature, the treatment plan needs to be adjusted in time. At this time, the water inlet to the reactor should be reduced or stopped, and the water inlet flow rate can be continued to be increased when the temperature and dissolved oxygen are restored. Therefore, the device for aerobic microbial pretreatment of high-concentration pharmaceutical wastewater provided by the utility model can serve as a warning, and the method of degrading pharmaceutical wastewater can be adjusted in time according to the changes in the dissolved oxygen sensor and the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0016] Figure 1 This is a schematic diagram of the structure of the device for pretreating high-concentration pharmaceutical wastewater with aerobic microorganisms provided in Example 1 of the utility model;

[0017] Among them, 1-tank body, 2-concrete base, 3-stirring rod, 4-first stirring paddle, 5-second stirring paddle, 6-third stirring paddle, 7-bellows, 8-aeration pipe, 9-aeration interface, 10-ultrasonic liquid level sensor, 11-spraying device, 12-liquid inlet, 13-liquid outlet, 14-temperature sensor, 15-pH sensor, 16-dissolved oxygen sensor, 17-manhole, 18-motor and 19 motor bracket. DETAILED DESCRIPTION

[0018] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0020] A first typical embodiment of the utility model provides a device for pretreating high-concentration pharmaceutical wastewater with aerobic microorganisms, comprising:

[0021] A tank body, wherein a concrete base is provided at the bottom of the tank body, an aeration and stirring device is provided in the tank body, the aeration and stirring device is connected to a bellows, the bellows is provided on the concrete base, and the bellows is connected to an aeration fan outside the tank body through an aeration pipe; an ultrasonic liquid level sensor is provided at the top of the side wall of the tank body, a spray device is provided below the ultrasonic liquid level sensor, and the spray device is electrically connected to the ultrasonic liquid level sensor; a dissolved oxygen sensor is provided on the side wall of the tank body; a liquid inlet is provided at the bottom of the side wall of the tank body, and a liquid outlet is provided at the top of the side wall of the tank body.

[0022] In one or more embodiments, the aeration and stirring device includes a stirring rod, and the stirring rod is sequentially connected to a first stirring paddle, a second stirring paddle, and a third stirring paddle from top to bottom.

[0023] Preferably, the stirring rod, the first stirring paddle, the first stirring paddle and the third stirring paddle are all hollow, and the gas passages of the first stirring paddle, the second stirring paddle and the third stirring paddle are all connected to the gas passage of the stirring rod.

[0024] Further preferably, the gas passage of the stirring rod is connected to the bellows.

[0025] Preferably, aeration holes are provided at the bottom of the first stirring paddle, the second stirring paddle and the third stirring paddle.

[0026] Further preferably, since the pressure of the liquid increases with the increase of the depth of the liquid, in order to ensure a uniform aeration effect, the diameter of the aeration holes of the third agitator is greater than the diameter of the aeration holes of the second agitator and greater than the diameter of the aeration holes of the first agitator.

[0027] In one or more embodiments, a motor is disposed on the top of the tank body, and an output shaft of the motor is connected to the aeration and stirring device.

[0028] In one or more embodiments, a pH sensor is disposed on the side wall of the tank body for monitoring the pH of high-concentration pharmaceutical wastewater to be treated in the tank body.

[0029] In one or more embodiments, a temperature sensor is disposed on the side wall of the tank body to monitor the temperature of the high-concentration pharmaceutical wastewater to be treated in the tank body.

[0030] In one or more embodiments, in order to facilitate maintenance and inspection of the tank body, a manhole is provided on the top of the tank body.

[0031] A second typical implementation of the present invention provides a high-concentration pharmaceutical wastewater treatment system, including the above-mentioned device for pretreating high-concentration pharmaceutical wastewater with aerobic microorganisms.

[0032] The present invention will be further described in detail below in conjunction with specific embodiments. It should be noted that the specific embodiments are intended to explain the present invention rather than to limit it.

[0033] Example 1

[0034] See also Figure 1 , a device for aerobic microbial pretreatment of high-concentration pharmaceutical wastewater, comprising:

[0035] A tank body 1 is provided with a concrete base 2 at the bottom of the tank body 1, an aeration stirring device is provided in the tank body 1, the aeration stirring device is connected to a bellows 7, the bellows 7 is provided on the concrete base 2, and the bellows 7 is connected to an aeration fan outside the tank body 1 through an aeration pipe 8; an ultrasonic liquid level sensor 10 is provided at the top of the side wall of the tank body 1, a spray device 11 is provided below the ultrasonic liquid level sensor 10, and the spray device 11 is electrically connected to the ultrasonic liquid level sensor 10; a dissolved oxygen sensor 16 is provided on the side wall of the tank body 1; a liquid inlet 12 is provided at the bottom of the side wall of the tank body 1, and a liquid outlet 13 is provided at the top of the side wall of the tank body.

[0036] Since the entire tank body 1 is large in size and has a large mass when filled with wastewater, it is placed on a concrete base 2 to ensure its stability and prevent it from collapsing.

[0037] The aeration stirring device includes a stirring rod 3, which is connected to a first stirring paddle 4, a second stirring paddle 5 and a third stirring paddle 6 in sequence from top to bottom. The stirring rod 3, the first stirring paddle 4, the first stirring paddle 5 and the third stirring paddle 6 are all hollow, and the gas passages of the first stirring paddle 4, the second stirring paddle 5 and the third stirring paddle 6 are all connected to the gas passage of the stirring rod 3. The gas passage of the stirring rod 3 is connected to the bellows 7. Aeration holes are provided at the bottom of the first stirring paddle 4, the second stirring paddle 5 and the third stirring paddle 6. An aeration interface 9 is provided at the bottom of the tank body 1, and an aeration pipe 8 is connected to an aeration fan outside the tank body through the aeration interface 9. The gas in the aeration fan outside the tank body enters the aeration pipe 8 through the aeration interface 9, and then enters the bellows 7. The gas in the bellows 7 is transmitted to the hollow first stirring paddle 4, the second stirring paddle 5 and the third stirring paddle 6 through the hollow stirring rod 3, and enters the tank body 1 through the aeration holes of the first stirring paddle 4, the second stirring paddle 5 and the third stirring paddle 6 to form dissolved oxygen for the degradation of high-concentration pharmaceutical wastewater. Since the pressure of the liquid increases with the depth of the liquid, in order to ensure a uniform aeration effect, the aeration hole diameter of the third stirring paddle> the aeration hole diameter of the second stirring paddle> the aeration hole diameter of the first stirring paddle. The aeration stirring device is used in the device for aerobic microorganism pretreatment of high-concentration pharmaceutical wastewater provided by the utility model, and aeration can be performed during the stirring process, thereby improving the utilization rate of dissolved oxygen, and thus accelerating the degradation of COD in the concentrated pharmaceutical wastewater by aerobic microorganisms.

[0038] A motor 18 is disposed on the top of the tank body 1, and the output shaft of the motor 18 is connected to the aeration stirring device. In order to further fix the motor 18, a motor bracket 19 is disposed on the top of the tank body 1, and the motor bracket 19 is connected to the motor 18 to fix the motor 18.

[0039] The spray device 11 is connected to the tank body 1, and the spray device 11 includes a spray rod and a spray hole, and the spray device 11 is connected to the water tank outside the tank body 1. Since abundant foam will be generated on the surface of the wastewater during the degradation of pharmaceutical wastewater, the presence of foam will hinder gas transmission, stirring and precipitation, thereby affecting the efficiency of sewage treatment, so an ultrasonic sensor 10 is provided in the utility model. When the foam escapes to the warning position of the ultrasonic sensor 10, the ultrasonic sensor 10 communicates with the spray device 11, and then the spray device 11 will start automatically to eliminate the foam, thereby accelerating the degradation of COD in the concentrated pharmaceutical wastewater by aerobic microorganisms.

[0040] The side wall of the tank body 1 is provided with a pH sensor 15 for pH monitoring of the high-concentration pharmaceutical wastewater to be treated in the tank body. The side wall of the tank body 1 is provided with a temperature sensor 14 for monitoring the temperature of the high-concentration pharmaceutical wastewater to be treated in the tank body 1. In order to facilitate inspection and maintenance, the temperature sensor 14, the pH sensor 15 and the dissolved oxygen sensor 16 in this embodiment are all arranged at the bottom of the side wall of the tank body 1. Due to the complex and changeable composition of pharmaceutical wastewater, when the microbial metabolic activity is inhibited by toxic wastewater, the dissolved oxygen consumption rate in the tank 1 decreases, and the generated biological heat decreases, thereby showing the characteristics of a substantial increase in dissolved oxygen and a decrease in temperature. At this time, when the dissolved oxygen sensor 16 monitors a substantial increase in dissolved oxygen, and the temperature sensor 14 simultaneously monitors a substantial decrease in temperature, the treatment plan needs to be adjusted in time, and the reactor water inlet should be reduced or stopped at this time, and the water inlet flow rate should be continued to be increased when the temperature and dissolved oxygen are both restored. Therefore, the device for aerobic microorganism pretreatment of high-concentration pharmaceutical wastewater provided by the utility model can play a warning role, and the method for degrading pharmaceutical wastewater can be adjusted in time according to the changes of the dissolved oxygen sensor 16 and the temperature sensor 14.

[0041] In order to facilitate the maintenance and inspection of the tank body, a manhole 17 is provided on the top of the tank body 1.

[0042] Example 2

[0043] This embodiment provides a high-concentration pharmaceutical wastewater treatment system, including the device for aerobic microorganism pretreatment of high-concentration pharmaceutical wastewater in Example 1.

[0044] The wastewater treated by the aerobic microbial pretreatment device for high-concentration pharmaceutical wastewater enters the anaerobic tower and aeration tank in the high-concentration pharmaceutical wastewater treatment system to achieve complete mineralization and degradation of organic pollutants.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of them with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for aerobic microbial pretreatment of high-concentration pharmaceutical wastewater, characterized in that: include: A tank body, wherein a concrete base is provided at the bottom of the tank body, an aeration and stirring device is provided in the tank body, the aeration and stirring device is connected to a bellows, the bellows is provided on the concrete base, and the bellows is connected to an aeration fan outside the tank body through an aeration pipe; an ultrasonic liquid level sensor is provided at the top of the side wall of the tank body, a spray device is provided below the ultrasonic liquid level sensor, and the spray device is electrically connected to the ultrasonic liquid level sensor; a dissolved oxygen sensor is provided on the side wall of the tank body; a liquid inlet is provided at the bottom of the side wall of the tank body, and a liquid outlet is provided at the top of the side wall of the tank body.

2. The device according to claim 1, characterized in that The aeration stirring device comprises a stirring rod, and the stirring rod is connected to a first stirring paddle, a second stirring paddle and a third stirring paddle in sequence from top to bottom.

3. The device according to claim 2, characterized in that The stirring rod, the first stirring paddle, the first stirring paddle and the third stirring paddle are all hollow, and the gas passages of the first stirring paddle, the second stirring paddle and the third stirring paddle are all connected to the gas passage of the stirring rod; the gas passage of the stirring rod is connected to the bellows.

4. The device according to claim 2, characterized in that Aeration holes are arranged at the bottom of the first stirring paddle, the second stirring paddle and the third stirring paddle.

5. The device according to claim 4, characterized in that The diameter of the aeration holes of the third agitator is greater than the diameter of the aeration holes of the second agitator and greater than the diameter of the aeration holes of the first agitator.

6. The device according to claim 1, characterized in that A motor is arranged on the top of the tank body, and an output shaft of the motor is connected to the aeration and stirring device.

7. The device according to claim 1, characterized in that A pH sensor is arranged on the side wall of the tank.

8. The device according to claim 1, characterized in that The side wall of the tank body is provided with a temperature sensor.

9. The device according to claim 1, characterized in that A manhole is arranged on the top of the tank body.

10. A high-concentration pharmaceutical wastewater treatment system, characterized in that: A device for pretreating high-concentration pharmaceutical wastewater using aerobic microorganisms as described in any one of claims 1 to 9.

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