Fluidized bed device for removing high ammonia nitrogen in coking wastewater

Abstract

The utility model belongs to the technical field of wastewater treatment, and particularly relates to a fluidized bed device for removing high ammonia nitrogen in coking wastewater, which comprises a wastewater treatment box and a biochemical treatment box, chemical reagents or microbiological treatment bacteria are added into the biochemical treatment box, the microbiological treatment bacteria adopt facultative bacteria, and the bacteria are high in ammonia nitrogen tolerance concentration and high in ammonia nitrogen tolerance concentration. The biochemical treatment box has specificity for treating benzene ring compounds, and the wastewater treatment box is communicated with the biochemical treatment box through a pipeline; according to the utility model, the waste water is heated or cooled through the heater or by introducing cooling water into the spiral cooling water pipe, so that the heat preservation regulation of the waste water is realized, the development of chemical agents and the reproduction of microorganisms are facilitated, and the heat preservation effect of the biochemical treatment box is improved through carrying out heat preservation on the biochemical treatment box through the constant-temperature box compared with the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a fluidized bed device for removing high ammonia nitrogen from coking wastewater. Background Art

[0002] Coking wastewater is wastewater containing a large amount of aromatic, condensed-ring and heterocyclic compounds generated in the process of coal-to-coke, coal gas purification and coking product recovery. It has the characteristics of large discharge volume, high salt concentration and high hardness. It is a high-salt organic wastewater that is difficult to biodegrade.

[0003] In order to improve the treatment effect of coking wastewater, more chemical agents are often needed to be added during the pretreatment process. However, the effect of chemical agents is affected by the wastewater temperature. If the wastewater temperature is not appropriate, the efficacy of chemical agents is difficult to fully exert, which reduces the efficiency of wastewater treatment and purification. In addition, temperature is an important factor limiting bacterial reproduction. If the wastewater temperature is too high in the aerobic tank, the sludge activity will deteriorate sharply, increasing the difficulty of discharge.

[0004] The existing Chinese patent with the announcement number CN219297285U discloses a thermostatic device for biochemical treatment of coking wastewater, which belongs to the technical field of wastewater treatment equipment. The thermostatic device for biochemical treatment of coking wastewater is provided with a thermostatic treatment box between the wastewater treatment box and the biochemical treatment box, and a first temperature sensor, a first filter layer, and a heating device are provided inside the thermostatic treatment box. The first temperature sensor is provided on the side close to the wastewater treatment box, the first filter layer is provided in the middle of the thermostatic treatment box, and the heating device is provided on the side away from the wastewater treatment box, so as to adjust the temperature of the wastewater in the box, limit the reproduction of bacteria in the wastewater, and thus achieve efficient and stable treatment of the wastewater.

[0005] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: the biochemical treatment box and the constant temperature treatment box of the device are separately arranged, and the thermal insulation effect of the biochemical treatment box itself is relatively general, and the temperature needs to be frequently adjusted by the heating device and the cooling sleeve, which relatively increases the cost and needs to be improved; therefore, in view of the above-mentioned problems, a fluidized bed device for removing high ammonia nitrogen from coking wastewater 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 fluidized bed device for removing high ammonia nitrogen from coking wastewater.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the fluidized bed device for removing high ammonia nitrogen from coking wastewater described in the utility model comprises a wastewater treatment box and a biochemical treatment box, the interior of the biochemical treatment box is added with chemical reagents or microbial treatment bacteria, the microbial treatment bacteria adopt facultative anaerobic bacteria, the strain is tolerant to high ammonia nitrogen concentration, and has specificity for treating benzene ring compounds, the wastewater treatment box and the biochemical treatment box are connected by a pipeline, and a valve is installed on the pipeline, and a temperature regulating component is installed on the outside of the biochemical treatment box, and the temperature regulating component comprises a constant temperature box, a spiral cooling water pipe, a heater and a temperature The sensor, both ends of the threaded cooling water pipe are respectively connected with the input pipe and the output pipe of the cooling water, the constant temperature box is fixedly installed on the outside of the biochemical treatment box, the spiral cooling water pipe is fixedly installed on the inside of the biochemical treatment box, and the two ends of the spiral cooling water pipe pass through the biochemical treatment box and the constant temperature box respectively, and the heater is fixedly installed on the lower side wall of the biochemical treatment box. When in use, the coking wastewater is passed from the wastewater treatment box into the inside of the biochemical treatment box, the wastewater below the biochemical treatment box is extracted by a water pump and transported to the top through a circulation pipe to form a circulating flow, so that the wastewater inside the biochemical treatment box flows and mixes the cold and hot evenly, and the overall temperature remains consistent.

[0008] Preferably, a U-shaped flow pipe is fixedly connected to the side wall of the biochemical treatment box, a sensor interface is installed on the lower side wall of the flow pipe, and the temperature sensor is fixedly installed at the sensor interface. The temperature of the wastewater is detected by the temperature sensor. When the temperature of the wastewater is too high or too low, the wastewater can be heated or cooled by a heater or by introducing cooling water into the spiral cooling water pipe to achieve thermal insulation regulation of the wastewater, which is convenient for the development of chemical agents and the reproduction of microorganisms. The biochemical treatment box is insulated by a constant temperature box, which improves the thermal insulation effect of the biochemical treatment box compared with the prior art.

[0009] Preferably, a water pump is fixedly connected to the center of the circulation pipe, and wastewater below the biochemical treatment box is extracted by the water pump and transported to the upper part through the circulation pipe to form a circulating flow.

[0010] Preferably, a mixing assembly is installed inside the biochemical treatment box, and the mixing assembly includes an annular outer shell and an inner shell, the outer shell and the inner shell are rotatably connected, one side of the outer shell is fixedly connected to a water inlet pipe, and the other end of the water inlet pipe is fixedly connected to the upper end of the circulation pipe.

[0011] Preferably, the bottom of the inner shell is provided with a plurality of water outlet holes which are opened obliquely in a ring shape.

[0012] Preferably, the side wall of the inner shell is annular and fixedly connected with a plurality of blades. The wastewater transported by the circulation pipeline enters the interior of the outer shell and the inner shell through the water inlet pipe, and drives the inner shell to rotate by cooperating with the blades, so that the wastewater is rotated and sprayed back from the water outlet to the interior of the biochemical treatment box, so that the wastewater is evenly dispersed, and the chemical reagents or microbial treatment bacteria are fully in contact with the wastewater, thereby improving the treatment effect of the coking wastewater.

[0013] Preferably, a rotating shaft is fixedly connected to the inner center of the inner shell, and both ends of the rotating shaft are rotatably connected to the biochemical treatment box.

[0014] Preferably, a plurality of stirring blades are fixedly connected to the side wall of the rotating shaft from top to bottom, and the inner shell drives the rotating shaft to rotate. Through the cooperation between the rotating shaft and the stirring blades, the stirring blades stir and mix the wastewater, further improving the mixing effect of chemical reagents or microbial treatment bacteria and wastewater.

[0015] Preferably, a liquid inlet is fixedly connected to the top of the biochemical treatment box, and a liquid outlet is fixedly connected to the lower side wall of the biochemical treatment box. The liquid inlet and the liquid outlet respectively penetrate the constant temperature box and extend to the outside, and a valve is installed on the liquid outlet. The liquid outlet is connected to other treatment tanks through a pipeline to facilitate subsequent treatment and recovery.

[0016] The utility model is beneficial in that:

[0017] 1. The utility model uses a water pump to extract wastewater from the bottom of the biochemical treatment box and transports it to the top through a circulation pipe to form a circulating flow, so that the wastewater inside the biochemical treatment box flows and mixes hot and cold evenly, and the overall temperature remains consistent. The wastewater is heated or cooled by a heater or by introducing cooling water into a spiral cooling water pipe to achieve thermal insulation regulation of the wastewater, which is convenient for the chemical agents to function and the microorganisms to reproduce. The biochemical treatment box is insulated by a constant temperature box, which improves the thermal insulation effect of the biochemical treatment box compared to the prior art.

[0018] 2. The utility model drives the inner shell to rotate by the wastewater pushing the blades, so that the wastewater is rotated and sprayed back from the water outlet to the inside of the biochemical treatment box, so that the wastewater is evenly dispersed, and the chemical reagents or microbial treatment bacteria are fully in contact with the wastewater, thereby improving the treatment effect of the coking wastewater, and the stirring blades rotate synchronously to stir and mix the wastewater, further improving the mixing effect of the chemical reagents or microbial treatment bacteria and the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the thermostatic box of the utility model;

[0022] Figure 3 This is a cross-sectional view of the biochemical treatment box of the utility model;

[0023] Figure 4 For this utility model Figure 3 A structural diagram of ;

[0024] Figure 5 It is a cross-sectional view of the outer shell of the utility model.

[0025] In the figure: 1. Wastewater treatment tank; 2. Biochemical treatment tank; 3. Temperature adjustment component; 31. Constant temperature box; 32. Spiral cooling water pipe; 33. Heater; 34. Temperature sensor; 4. Flow pipe; 5. Sensor interface; 6. Water pump; 7. Mixing component; 71. Outer shell; 72. Inner shell; 73. Water inlet pipe; 74. Water outlet; 75. Blade; 76. Rotating shaft; 77. Stirring blade; 8. Liquid inlet end; 9. Liquid outlet end. DETAILED DESCRIPTION

[0026] 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.

[0027] Example 1: Please refer to Figure 1-4As shown, a fluidized bed device for removing high ammonia nitrogen from coking wastewater includes a wastewater treatment box 1 and a biochemical treatment box 2. Chemical reagents or microbial treatment bacteria are added to the interior of the biochemical treatment box 2. The microbial treatment bacteria adopt facultative oxobacteria. The strain is tolerant to high ammonia nitrogen concentration and has specificity for treating benzene ring compounds. The wastewater treatment box 1 and the biochemical treatment box 2 are connected by a pipeline, and a valve is installed on the pipeline. A temperature adjustment component 3 is installed outside the biochemical treatment box 2. The temperature adjustment component 3 includes a constant temperature box 31, a spiral cooling water pipe 32, a heater 33 and a temperature sensor 34. The two ends of the threaded cooling water pipe are respectively connected There are cooling water input pipes and output pipes, a constant temperature box 31 is fixedly installed on the outside of the biochemical treatment box 2, a spiral cooling water pipe 32 is fixedly installed inside the biochemical treatment box 2, and both ends of the spiral cooling water pipe 32 respectively penetrate the biochemical treatment box 2 and the constant temperature box 31, and a heater 33 is fixedly installed on the lower side wall of the biochemical treatment box 2. When in use, coking wastewater is passed from the wastewater treatment box 1 into the interior of the biochemical treatment box 2, and the wastewater below the biochemical treatment box 2 is extracted by the water pump 6 and transported to the top through the circulation pipe 4 to form a circulating flow, so that the wastewater inside the biochemical treatment box 2 flows and mixes the cold and hot evenly, and the overall temperature remains consistent.

[0028] A U-shaped circulation pipe 4 is fixedly connected to the side wall of the biochemical treatment box 2, and a sensor interface 5 is installed on the lower side wall of the circulation pipe 4. A temperature sensor 34 is fixedly installed at the sensor interface 5. The temperature of the wastewater is detected by the temperature sensor 34. When the temperature of the wastewater is too high or too low, cooling water can be introduced through the heater 33 or into the spiral cooling water pipe 32 to heat or cool the wastewater, thereby achieving thermal insulation regulation of the wastewater, which is convenient for the development of chemical agents and the reproduction of microorganisms. The biochemical treatment box 2 is insulated by the constant temperature box 31, which improves the thermal insulation effect of the biochemical treatment box 2 compared with the prior art.

[0029] A water pump 6 is fixedly connected to the center of the circulation pipe 4 , and the wastewater below the biochemical treatment box 2 is extracted by the water pump 6 and transported to the upper part through the circulation pipe 4 to form a circulating flow.

[0030] Example 2: For comparison with Example 1, please refer to Figure 5 As shown, the utility model provides another embodiment, a mixing assembly 7 is installed inside the biochemical treatment box 2, and the mixing assembly 7 includes an annular outer shell 71 and an inner shell 72, the outer shell 71 and the inner shell 72 are rotatably connected, one side of the outer shell 71 is fixedly connected to a water inlet pipe 73, and the other end of the water inlet pipe 73 is fixedly connected to the upper end of the circulation pipe 4.

[0031] The bottom of the inner shell 72 is provided with a plurality of water outlet holes 74 which are opened obliquely in a ring shape.

[0032] The side wall of the inner shell 72 is annular and fixedly connected with a plurality of blades 75. The wastewater transported by the circulation pipe 4 enters the outer shell 71 and the inner shell 72 through the water inlet pipe 73, and promotes the inner shell 72 to rotate by cooperating with the blades 75, so that the wastewater is rotated and sprayed back from the water outlet 74 to the interior of the biochemical treatment box 2, so that the wastewater is evenly dispersed, so that the chemical reagents or microbial treatment bacteria are fully in contact with the wastewater, and the treatment effect of the coking wastewater is improved.

[0033] A rotating shaft 76 is fixedly connected to the inner center of the inner shell 72 , and both ends of the rotating shaft 76 are rotatably connected to the biochemical treatment box 2 .

[0034] A plurality of stirring blades 77 are fixedly connected to the side wall of the rotating shaft 76 from top to bottom, and the inner shell 72 drives the rotating shaft 76 to rotate. Through the cooperation between the rotating shaft 76 and the stirring blades 77, the stirring blades 77 stir and mix the wastewater, further improving the mixing effect of chemical reagents or microbial treatment bacteria and wastewater.

[0035] A liquid inlet 8 is fixedly connected to the top of the biochemical treatment box 2, and a liquid outlet 9 is fixedly connected to the lower side wall of the biochemical treatment box 2. The liquid inlet 8 and the liquid outlet 9 respectively penetrate the constant temperature box 31 and extend to the outside, and a valve is installed on the liquid outlet 9. The liquid outlet 9 is connected to other treatment tanks through a pipeline to facilitate subsequent treatment and recovery.

[0036] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation 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 order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0037] 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.

[0038] Working principle: when in use, coking wastewater is passed from the wastewater treatment box 1 into the interior of the biochemical treatment box 2, and the wastewater below the biochemical treatment box 2 is extracted by the water pump 6 and transported to the top through the circulation pipe 4 to form a circulating flow, so that the wastewater inside the biochemical treatment box 2 flows and mixes the cold and hot evenly, and the overall temperature remains consistent. The temperature of the wastewater is detected by the temperature sensor 34. When the temperature of the wastewater is too high or too low, cooling water can be introduced through the heater 33 or into the spiral cooling water pipe 32 to heat or cool the wastewater, thereby achieving thermal insulation regulation of the wastewater, which is convenient for the chemical agents to function and the microorganisms to reproduce, and the biochemical treatment box 2 is insulated by the constant temperature box 31. Compared with the prior art, the thermal insulation effect of the biochemical treatment box 2 is improved.

[0039] The wastewater transported by the circulation pipe 4 enters the interior of the outer shell 71 and the inner shell 72 through the water inlet pipe 73, and promotes the rotation of the inner shell 72 through the cooperation with the blades 75, so that the wastewater is rotated and sprayed back from the water outlet 74 to the interior of the biochemical treatment box 2, so that the wastewater is evenly dispersed, so that the chemical reagents or microbial treatment bacteria are fully in contact with the wastewater, thereby improving the treatment effect of the coking wastewater, and the inner shell 72 drives the rotating shaft 76 to rotate, and through the cooperation of the rotating shaft 76 and the stirring blades 77, the stirring blades 77 stir and mix the wastewater, further improving the mixing effect of the chemical reagents or microbial treatment bacteria and the wastewater.

[0040] 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.

[0041] 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 fluidized bed device for removing high ammonia nitrogen from coking wastewater, comprising a wastewater treatment tank (1) and a biochemical treatment tank (2), wherein the wastewater treatment tank (1) and the biochemical treatment tank (2) are connected via a pipeline, and characterized in that: A temperature regulating assembly (3) is installed outside the biochemical treatment box (2), and the temperature regulating assembly (3) comprises a constant temperature box (31), a spiral cooling water pipe (32), a heater (33) and a temperature sensor (34). The constant temperature box (31) is fixedly installed outside the biochemical treatment box (2), the spiral cooling water pipe (32) is fixedly installed inside the biochemical treatment box (2), and both ends of the spiral cooling water pipe (32) respectively penetrate the biochemical treatment box (2) and the constant temperature box (31), and the heater (33) is fixedly installed on the lower side wall of the biochemical treatment box (2).

2. The fluidized bed device for removing high ammonia nitrogen from coking wastewater according to claim 1, characterized in that: A U-shaped flow pipe (4) is fixedly connected to the side wall of the biochemical treatment box (2), a sensor interface (5) is installed on the lower side wall of the flow pipe (4), and the temperature sensor (34) is fixedly installed at the sensor interface (5).

3. The fluidized bed device for removing high ammonia nitrogen from coking wastewater according to claim 2, characterized in that: A water pump (6) is fixedly connected to the center of the circulation pipe (4).

4. The fluidized bed device for removing high ammonia nitrogen from coking wastewater according to claim 2, characterized in that: A mixing assembly (7) is installed inside the biochemical treatment box (2), and the mixing assembly (7) comprises an annular outer shell (71) and an inner shell (72), the outer shell (71) and the inner shell (72) being rotatably connected, a water inlet pipe (73) being fixedly connected to one side of the outer shell (71), and the other end of the water inlet pipe (73) being fixedly connected to the upper end of the circulation pipe (4).

5. The fluidized bed device for removing high ammonia nitrogen from coking wastewater according to claim 4, characterized in that: The bottom of the inner shell (72) is provided with a plurality of water outlet holes (74) which are arranged in an annular shape and are opened at an angle.

6. The fluidized bed device for removing high ammonia nitrogen from coking wastewater according to claim 4, characterized in that: The side wall of the inner casing (72) is annular and fixedly connected to a plurality of blades (75).

7. The fluidized bed device for removing high ammonia nitrogen from coking wastewater according to claim 4, characterized in that: A rotating shaft (76) is fixedly connected at the inner center of the inner shell (72), and both ends of the rotating shaft (76) are rotatably connected to the biochemical treatment box (2).

8. The fluidized bed device for removing high ammonia nitrogen from coking wastewater according to claim 7, characterized in that: A plurality of stirring blades (77) are fixedly connected to the side wall of the rotating shaft (76) from top to bottom.

9. The fluidized bed device for removing high ammonia nitrogen from coking wastewater according to claim 1, characterized in that: The top of the biochemical treatment box (2) is fixedly connected to a liquid inlet (8), and the lower side wall of the biochemical treatment box (2) is fixedly connected to a liquid outlet (9), the liquid inlet (8) and the liquid outlet (9) respectively penetrate the constant temperature box (31) and extend to the outside, and a valve is installed on the liquid outlet (9).

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