Pretreatment device for wastewater generated in semi-coke production

Abstract

The utility model belongs to the technical field of wastewater treatment, and particularly relates to a pretreatment device for wastewater generated in semi-coke production, which comprises a treatment tank, a separation layer is fixedly connected in the treatment tank and divides the internal space of the treatment tank into an upper cavity and a lower cavity, a liquid inlet end is mounted on the upper side wall of the upper cavity, and a liquid outlet end is mounted on the lower side wall of the lower cavity. An adding end is mounted on the upper side wall of the lower cavity; heavy oil, light oil and a water phase in waste water are separated in the upper cavity through the oil-liquid separation assembly, waste water and emulsified oil are separated in the lower cavity, pretreatment of the waste water is completed, and automatic detection and oil absorption of an oil-water layer can be achieved through cooperation of the first oil-water interface measurement sensor and the second oil-water interface measurement sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a pretreatment device for wastewater generated by producing blue carbon. Background Art

[0002] Due to the incomplete oxidation of coal during the production of semi-coke, the semi-coke wastewater contains a large amount of coal tar and low-molecular organic matter. The composition of semi-coke wastewater is complex, mainly containing coal tar substances, such as methanol, ethanol, formic acid, acetic acid, benzene, toluene, xylene, trimethylbenzene, phenolic substances, etc., and contains a large number of cyclic organic compounds and ammonia nitrogen. The dry storage temperature in coke production is about 1000℃, while the dry storage temperature in semi-coke production is low (about 700℃). Therefore, there are a large number of pollutants in semi-coke wastewater that have not been oxidized by high temperature, and their concentration is about 10 times higher than that of coking wastewater. If these sewage is discharged directly into rivers, lakes and rivers, it will pollute the environment, and the ammonia and phenolic gases in the sewage are easy to volatilize into the atmospheric environment, affecting the air quality. The tar in semi-coke wastewater includes heavy oil, light oil and emulsified oil.

[0003] In the commonly used semi-coke wastewater pretreatment system, the commonly used oil-water separation devices are oil scrapers and oil separators, and some use sedimentation and stratification methods to separate oil and water. These methods take a long time to wait for oil-water separation, and ultimately can only simply remove heavy oil and part of light oil in the water, while the emulsified oil in the water cannot be treated thoroughly;

[0004] The existing Chinese patent with announcement number CN218403774U discloses a pretreatment device for wastewater generated by the production of blue coke, which relates to the field of wastewater treatment technology. It includes a base, a separation cylinder, a stirring assembly, a connecting channel and an emulsified oil separation tank; the separation cylinder is installed above the base, and a stirring assembly is arranged in the separation cylinder, the lower end of the emulsified oil separation tank is coplanar with the lower end of the base, the upper end of the emulsified oil separation tank is at the same height as the upper end of the separation cylinder, and the lower end of the separation cylinder and the upper end of the emulsified oil separation tank are connected by a connecting channel on one side close to each other.

[0005] In view of the above and existing related technologies, the inventor believes that there are often the following defects: the device manually observes the oil-water separation layer and controls the corresponding suction pipe to lift and lower the oil, which is relatively inconvenient to use. Therefore, in view of the above problems, a pretreatment device for wastewater generated by the production of blue carbon is proposed. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model proposes a pretreatment device for wastewater generated by the production of blue carbon.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the utility model described in the pretreatment device of the wastewater produced by the production of blue carbon comprises a treatment tank, the interior of the treatment tank is fixedly connected with a partition layer, the partition layer divides the internal space of the treatment tank into an upper cavity and a lower cavity, the upper side wall of the upper cavity is equipped with a liquid inlet end, the upper side wall of the lower cavity is equipped with an addition end, the treatment tank is equipped with an oil-liquid separation component, and the oil-liquid separation component comprises an oil-water interface measurement sensor 1, an oil-water interface measurement sensor 2, and an oil discharge sensor. The oil drain pipe 1 and the oil drain pipe 2 are respectively installed on the top of the treatment tank, the bottom end of the oil drain pipe 1 extends into the upper cavity, the bottom end of the oil drain pipe 2 extends into the lower cavity through the partition layer, a sewage discharge end with a valve is installed at the bottom of the treatment tank, and the side walls of the upper cavity and the lower cavity are fixedly connected with a U-shaped pipe, and A solenoid valve is installed on the U-shaped tube. The wastewater generated in the production of blue coke is introduced into the upper cavity from the liquid inlet end. The operation of the driver 2 drives the stirring blade to stir, which accelerates the stratification effect of the heavy oil and light oil and the water phase in the wastewater. After stirring for a period of time, the wastewater no longer shakes, and a clear oil-water stratification phenomenon appears. The oil-water level is detected by the oil-water interface measurement sensor 1, and the driver 1 is controlled to run. The driver 1 drives the lead screw to rotate, so that the bottom end of the oil discharge pipe 1 moves to the oil-water level, and then the oil is pumped out through the pump body. After completion, the solenoid valve is opened to allow the remaining The wastewater enters the lower cavity through the U-shaped tube, and flocculants are added through the adding end, and stirred again through the mixing component for a period of time, so that the flocculants can quickly destroy the stability of the emulsified oil droplets and make them rise above the liquid surface. Then, after standing for a period of time, the oil-water interface measurement sensor 2 is used to detect the oil-water level, and the bottom end of the oil discharge pipe 2 is controlled to move to the oil-water level to extract the emulsified oil. Finally, the sewage discharge end is opened to discharge the wastewater, and the wastewater can be sent to the next process by connecting the connecting pipe to the sewage discharge end to complete the pretreatment of the wastewater.

[0008] Preferably, the oil drain pipe 1 and the oil drain pipe 2 are respectively connected to the pump body through pipelines.

[0009] Preferably, the top ends of the oil drain pipe 1 and the oil drain pipe 2 are fixedly connected with a connecting frame, one end of the connecting frame is fixedly connected with a guide rod, and the guide rod passes through the processing tank.

[0010] Preferably, the other end of the connecting frame is fixedly connected to a driver 1, and the oil-water interface measurement sensor 1 and the oil-water interface measurement sensor 2 are electrically connected to the driver 1 respectively. The driving end of the driver 1 passes through the connecting frame and is fixedly connected to a screw, and the screw is threadedly connected to the processing tank. The screw is driven to rotate by the driver 1 to adjust the bottom end height of the oil drain pipe 1 or the oil drain pipe 2.

[0011] Preferably, two sensor mounting ports are respectively installed on the top of the treatment tank corresponding to the oil-water interface measuring sensor 1 and the oil-water interface measuring sensor 2, one of which is detachably connected to the oil-water interface measuring sensor 1 by screw fastening or threaded connection, and the bottom of the other sensor mounting port is fixedly connected to a maintenance pipe, and the bottom end of the maintenance pipe passes through and is fixedly connected to the partition layer.

[0012] Preferably, another sensor mounting port is internally detachably connected with an extension frame, and the detachable connection is by screw fastening or threaded connection, and the bottom end of the extension frame is fixedly connected to the oil-water interface measuring sensor 2, and the inspection pipe connects the sensor mounting port with the lower cavity while isolating the upper cavity, and the oil-water interface measuring sensor 2 can be easily taken out from the outside of the processing tank by disassembling the extension frame, which is convenient for inspection.

[0013] Preferably, a mixing assembly is installed inside the processing tank, and the mixing assembly includes a second driver, and the second driver is fixedly installed on the top of the processing tank. The driving end of the second driver is fixedly connected to a stirring rod, and the stirring rod passes through the partition layer. A sealing ring is provided at the intersection of the stirring rod and the partition layer for sealing, and a plurality of stirring blades are fixedly connected to the surface of the stirring rod from top to bottom.

[0014] Preferably, a scraper is fixedly connected to the bottom of the stirring rod, and the scraper fits the inner wall of the treatment tank in the corresponding area.

[0015] The utility model is beneficial in that:

[0016] 1. The utility model separates the heavy oil and light oil from the water phase in the wastewater in the upper cavity through the oil-liquid separation component, and separates the wastewater and emulsified oil in the lower cavity, thereby completing the pretreatment of the wastewater. In addition, the oil-water interface measurement sensor 1 and the oil-water interface measurement sensor 2 cooperate to realize automatic detection of the oil-water level and oil absorption.

[0017] 2. The utility model drives the stirring blade to stir by the second driver, accelerates the stratification effect of the heavy oil and light oil and the water phase in the heavy wastewater in the upper cavity, and makes the flocculant and the wastewater fully mixed in the lower cavity, quickly destroying the stability of the emulsified oil droplets. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a cross-sectional view of the treatment tank of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the oil-liquid separation component of the utility model;

[0022] Figure 4 It is a schematic diagram of the expanded structure of the oil-water interface measurement sensor 1 and the oil-water interface measurement sensor 2 of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the hybrid component of the utility model.

[0024] In the figure: 1. treatment tank; 2. partition layer; 3. upper cavity; 4. lower cavity; 5. liquid inlet end; 6. addition end; 7. oil-liquid separation component; 71. oil-water interface measurement sensor 1; 72. oil-water interface measurement sensor 2; 73. oil drain pipe 1; 74. oil drain pipe 2; 75. connecting frame; 76. guide rod; 77. screw; 8. sewage discharge end; 9. U-shaped pipe; 10. solenoid valve; 11. driver 1; 12. sensor installation port; 13. maintenance pipe; 14. extension frame; 15. mixing component; 151. driver 2; 152. stirring rod; 153. stirring blade; 154. scraper. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0026] See also Figure 1-4As shown, a pretreatment device for wastewater generated by the production of blue carbon comprises a treatment tank 1, a partition layer 2 is fixedly connected to the interior of the treatment tank 1, the partition layer 2 divides the internal space of the treatment tank 1 into an upper cavity 3 and a lower cavity 4, the upper side wall of the upper cavity 3 is provided with a liquid inlet end 5, the upper side wall of the lower cavity 4 is provided with an addition end 6, an oil-liquid separation component 7 is installed on the treatment tank 1, the oil-liquid separation component 7 comprises an oil-water interface measurement sensor 1 71, an oil-water interface measurement sensor 2 72, an oil discharge pipe 1 73 and an oil discharge pipe 2 74, and the intersection of the oil discharge pipe 2 74 and the partition layer 2 is provided with The sealing ring is used for sealing, the oil-water interface measurement sensor 1 71 is installed inside the upper cavity 3, the oil-water interface measurement sensor 2 72 is installed inside the lower cavity 4, the oil drain pipe 1 73 and the oil drain pipe 2 74 are respectively installed on the top of the processing tank 1, the bottom end of the oil drain pipe 1 73 extends to the upper cavity 3, the bottom end of the oil drain pipe 2 74 passes through the partition layer 2 and extends to the lower cavity 4, the bottom of the processing tank 1 is installed with a sewage discharge end 8 with a valve, the side walls of the upper cavity 3 and the lower cavity 4 are fixedly connected with a U-shaped tube 9, and the U-shaped tube 9 is installed with a solenoid valve 10. The generated wastewater is introduced into the upper cavity 3 from the liquid inlet end 5, and the operating driver 151 drives the stirring blade 153 to stir, so as to accelerate the stratification effect of the heavy oil and light oil and the water phase in the wastewater. After stirring for a period of time, the wastewater no longer shakes, and a clear oil-water stratification phenomenon appears. The oil-water level is detected by the oil-water interface measurement sensor 71, and the driver 11 is controlled to run. The driver 11 drives the screw 77 to rotate, so that the bottom end of the oil discharge pipe 73 moves to the oil-water level, and then the oil is pumped out through the pump body. After completion, the solenoid valve 10 is opened to allow the remaining wastewater to Enter the lower cavity 4 through the U-shaped tube 9, add flocculant through the adding end 6, and stir again through the mixing component 15 for a period of time, so that the flocculant can quickly destroy the stability of the emulsified oil droplets and make them rise above the liquid surface. Then, after standing for a period of time, the oil-water level is detected by the oil-water interface measurement sensor 2 72, and the bottom end of the oil discharge pipe 2 74 is controlled to move to the oil-water level to extract the emulsified oil. Finally, the sewage discharge end 8 is opened to discharge the wastewater, and the wastewater can be sent to the next process by connecting the connecting pipe to the sewage discharge end 8 to complete the pretreatment of the wastewater.

[0027] The oil discharge pipe 1 73 and the oil discharge pipe 2 74 are respectively connected to the pump body through pipelines.

[0028] A connecting frame 75 is fixedly connected to the top of the oil drain pipe 1 73 and the oil drain pipe 2 74 , and a guide rod 76 is fixedly connected to one end of the connecting frame 75 , and the guide rod 76 passes through the processing tank 1 .

[0029] The other end of the connecting frame 75 is fixedly connected to a driver 11, and the oil-water interface measuring sensor 1 71 and the oil-water interface measuring sensor 2 72 are electrically connected to the driver 11 respectively. The driving end of the driver 11 passes through the connecting frame 75 and is fixedly connected to a lead screw 77, and the lead screw 77 is threadedly connected to the processing tank 1. The lead screw 77 is driven to rotate by the driver 11 to adjust the bottom end height of the oil drain pipe 1 73 or the oil drain pipe 2 74.

[0030] Two sensor mounting ports 12 are installed at the top of the processing tank 1 corresponding to the oil-water interface measuring sensor 1 71 and the oil-water interface measuring sensor 2 72, respectively. One of the sensor mounting ports 12 is detachably connected to the oil-water interface measuring sensor 1 71, and the detachable connection method is screw fastening or threaded connection. The bottom of the other sensor mounting port 12 is fixedly connected to a maintenance pipe 13, and the bottom end of the maintenance pipe 13 passes through and is fixedly connected to the partition layer 2.

[0031] Another sensor mounting port 12 is internally detachably connected with an extension frame 14, and the detachable connection method is screw fastening or threaded connection, and the bottom end of the extension frame 14 is fixedly connected to the oil-water interface measurement sensor 2 72. The inspection pipe 13 connects the sensor mounting port 12 with the lower cavity 4 while isolating the upper cavity 3. By disassembling the extension frame 14, the oil-water interface measurement sensor 2 72 can be easily taken out from the outside of the processing tank 1, which is convenient for maintenance. Example

[0032] For comparison with Example 1, please refer to Figure 5 As shown, the utility model provides another embodiment, a mixing assembly 15 is installed inside the treatment tank 1, and the mixing assembly 15 includes a second driver 151, and the second driver 151 is fixedly installed on the top of the treatment tank 1, and the driving end of the second driver 151 is fixedly connected with a stirring rod 152, and the stirring rod 152 passes through the partition layer 2, and a sealing ring is provided at the intersection of the stirring rod 152 and the partition layer 2 for sealing, and a plurality of groups of stirring blades 153 are fixedly connected to the surface of the stirring rod 152 from top to bottom, and the stirring blades 153 are driven to rotate by the second driver 151 to stir the wastewater.

[0033] The bottom of the stirring rod 152 is fixedly connected with a scraper 154, which fits the inner wall of the treatment tank 1 in the corresponding area. When discharging wastewater, the scraper 154 is driven by the driver 151 to rotate to clean the inner wall below the treatment tank 1 to reduce residual dirt.

[0034] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and according to the actual situation, a suitable controller should be selected to electrically connect with the driver 11, the driver 2 151, the pump body, the solenoid valve 10, the oil-water interface measurement sensor 1 71 and the oil-water interface measurement sensor 2 72 to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the working order. The detailed connection means are well known in the art. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0035] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art.

[0036] Working principle: the wastewater generated in the production of blue coke is introduced into the upper cavity 3 from the liquid inlet end 5, and the operating driver 151 drives the stirring blade 153 to stir, so as to accelerate the stratification effect of the heavy oil and light oil and the water phase in the wastewater. After stirring for a period of time, the wastewater no longer shakes, and a clear oil-water stratification phenomenon appears. The oil-water level is detected by the oil-water interface measurement sensor 71, and the driver 11 is controlled to run. The driver 11 drives the screw 77 to rotate, so that the bottom end of the oil discharge pipe 73 moves to the oil-water level, and then the oil is pumped through the pump body. After completion, the solenoid valve 10 is opened to make The remaining wastewater enters the lower cavity 4 through the U-shaped tube 9, and flocculants are added through the adding end 6, and stirred again through the mixing component 15 for a period of time, so that the flocculants can quickly destroy the stability of the emulsified oil droplets and make them rise above the liquid surface. Then, after standing for a period of time, the oil-water interface measurement sensor 2 72 is used to detect the oil-water layer level, and the bottom end of the oil discharge pipe 2 74 is controlled to move to the oil-water layer level to extract the emulsified oil. Finally, the sewage discharge end 8 is opened to discharge the wastewater, and the wastewater can be sent to the next process by connecting the connecting pipe to the sewage discharge end 8 to complete the pretreatment of the wastewater.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A pretreatment device for wastewater generated by the production of blue carbon, comprising a treatment tank (1), characterized in that: The interior of the treatment tank (1) is fixedly connected to a partition layer (2), the partition layer (2) divides the interior space of the treatment tank (1) into an upper cavity (3) and a lower cavity (4), the upper side wall of the upper cavity (3) is provided with a liquid inlet end (5), the upper side wall of the lower cavity (4) is provided with a liquid addition end (6), the treatment tank (1) is provided with an oil-liquid separation component (7), the oil-liquid separation component (7) comprises an oil-water interface measurement sensor 1 (71), an oil-water interface measurement sensor 2 (72), an oil discharge pipe 1 (73) and an oil discharge pipe 2 (74), the oil-water interface measurement sensor 1 (71) being provided at the bottom of the treatment tank (1). The oil-water interface measuring sensor 2 (72) is installed inside the upper cavity (3), the oil-water interface measuring sensor 2 (72) is installed inside the lower cavity (4), the oil drain pipe 1 (73) and the oil drain pipe 2 (74) are respectively installed through the top of the processing tank (1), the bottom end of the oil drain pipe 1 (73) extends into the upper cavity (3), the bottom end of the oil drain pipe 2 (74) penetrates the partition layer (2) and extends into the lower cavity (4), a sewage discharge end (8) with a valve is installed at the bottom of the processing tank (1), and the side walls of the upper cavity (3) and the lower cavity (4) are fixedly connected with a U-shaped tube (9), and a solenoid valve (10) is installed on the U-shaped tube (9).

2. The pretreatment device for wastewater generated by the production of blue carbon according to claim 1, characterized in that: The oil discharge pipe 1 (73) and the oil discharge pipe 2 (74) are respectively connected to the pump body through pipelines.

3. The pretreatment device for wastewater generated by the production of blue carbon according to claim 1, characterized in that: The top ends of the oil drain pipe 1 (73) and the oil drain pipe 2 (74) are fixedly connected to a connecting frame (75), one end of the connecting frame (75) is fixedly connected to a guide rod (76), and the guide rod (76) passes through the processing tank (1).

4. The pretreatment device for wastewater generated by the production of blue carbon according to claim 3, characterized in that: The other end of the connecting frame (75) is fixedly connected to a driver 1 (11), and the driving end of the driver 1 (11) passes through the connecting frame (75) and is fixedly connected to a lead screw (77), and the lead screw (77) is threadedly connected to the processing tank (1).

5. The pretreatment device for wastewater generated by the production of blue carbon according to claim 1, characterized in that: Two sensor mounting ports (12) are respectively installed at the top of the treatment tank (1) corresponding to the oil-water interface measurement sensor 1 (71) and the oil-water interface measurement sensor 2 (72), wherein one of the sensor mounting ports (12) is detachably connected to the oil-water interface measurement sensor 1 (71), and the bottom of the other sensor mounting port (12) is fixedly connected to a maintenance pipe (13), and the bottom end of the maintenance pipe (13) passes through and is fixedly connected to the partition layer (2).

6. The pretreatment device for wastewater generated by the production of blue carbon according to claim 5, characterized in that: An extension frame (14) is detachably connected to the interior of the other sensor installation opening (12), and the bottom end of the extension frame (14) is fixedly connected to the second oil-water interface measurement sensor (72).

7. The pretreatment device for wastewater generated by the production of blue carbon according to claim 1, characterized in that: A mixing assembly (15) is installed inside the processing tank (1), and the mixing assembly (15) comprises a second driver (151). The second driver (151) is fixedly installed on the top of the processing tank (1), and a driving end of the second driver (151) is fixedly connected to a stirring rod (152), and the stirring rod (152) passes through the partition layer (2), and a plurality of groups of stirring blades (153) are fixedly connected to the surface of the stirring rod (152) from top to bottom.

8. The pretreatment device for wastewater generated by the production of blue carbon according to claim 7, characterized in that: A scraper (154) is fixedly connected to the bottom of the stirring rod (152), and the scraper (154) fits against the inner wall of the treatment tank (1) in the corresponding area.

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