Bioreactor system for treating high-ammonia-nitrogen printing and dyeing wastewater

Abstract

The utility model relates to a bioreactor system for treating high ammonia nitrogen printing and dyeing wastewater, which comprises a biological reaction tank and a sedimentation tank connected with the biological reaction tank through a pipeline, a plurality of V-shaped partition plates are arranged in the biological reaction tank, the biological reaction tank is transversely and averagely divided into three reaction areas by the V-shaped partition plates, a plurality of filter plates are arranged in the sedimentation tank, and the filter plates are arranged in the sedimentation tank. The settling pond is vertically and uniformly divided into three settling areas by the filter plates, a settling barrel is arranged in each settling area, the three settling barrels are distributed in a step shape from top to bottom and are sequentially connected through a pipeline, the bottom of each settling barrel is arranged to be a V-shaped bottom, zigzag lines are arranged on the surface of each V-shaped bottom, and a plurality of through holes are uniformly formed among the zigzag lines; the precipitation effect and the filtering capacity are enhanced, and suspended solids and impurities in the wastewater are effectively separated. Meanwhile, precipitated particles are effectively prevented from suspending again, the water body is kept clear, and the follow-up treatment burden is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a bioreactor system for treating high-ammonia nitrogen printing and dyeing wastewater. Background Art

[0002] Printing and dyeing wastewater is a highly polluted industrial wastewater with a high ammonia nitrogen content. Direct discharge will cause serious harm to the environment. At present, the removal methods for high ammonia nitrogen printing and dyeing wastewater mainly include physical methods, chemical methods and biological methods. Among them, the biological method has attracted widespread attention due to its advantages such as high treatment efficiency, low cost and environmental friendliness. However, traditional biological treatment technology still has some problems in treating wastewater with high ammonia nitrogen concentration. For example, the patent with announcement number CN212712945U discloses a high ammonia nitrogen wastewater treatment system. Although the treatment process of high ammonia nitrogen wastewater has been improved, it is unable to effectively separate suspended matter and fine particles in high ammonia nitrogen wastewater, which can easily affect the water quality and cause the discharged water quality to be substandard. Utility Model Content

[0003] (1) Technical problems solved

[0004] In light of the limitations of existing bioreactor systems, this utility model aims to provide a bioreactor system for treating high-ammonia nitrogen printing and dyeing wastewater. By arranging the settling barrels in three settling zones in a stepped pattern, this system enhances the settling effect and filtration capacity, ensuring effective separation of suspended matter and impurities in the wastewater. Furthermore, the through-holes and zigzag pattern design effectively prevent the resuspension of settled particles, maintaining water clarity and reducing the burden of subsequent treatment.

[0005] (2) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bioreactor system for treating high-ammonia nitrogen printing and dyeing wastewater, comprising a bioreactor tank and a sedimentation tank connected to the bioreactor tank pipeline, a plurality of "V"-shaped partitions are arranged in the bioreactor tank, the "V"-shaped partitions divide the bioreactor tank into three reaction zones in the horizontal direction, the "V"-shaped partitions are provided with serrated patterns on the surface of each reaction zone, a biological culture dish is fixedly connected to the inner wall of each reaction zone, a through hole is provided at the bottom of each "V"-shaped partition, and a check valve is provided at each through hole. A water outlet is provided on the right side of the reaction pool, and the water outlet is fixedly connected to the sedimentation tank through a pipe. It is characterized in that a number of filter plates are provided in the sedimentation tank, and the filter plates divide the sedimentation tank vertically into three sedimentation areas. A sedimentation barrel is provided in each sedimentation area, and the three sedimentation barrels are distributed in a stepped manner from top to bottom and are connected by pipes in sequence. The bottom of each sedimentation barrel is provided with a "V"-shaped bottom, and the surface of the "V"-shaped bottom is provided with serrated patterns and a number of through holes are evenly provided between the serrated patterns. A water outlet pipe is fixedly connected to the right side of the bottom of the sedimentation tank, and a sewage pipe is fixedly connected to the bottom of the sedimentation tank.

[0007] Preferably, the diameters of the through holes decrease from top to bottom, which means that the diameter of the through hole at the "V"-shaped bottom of the uppermost sedimentation barrel is the largest, and the wastewater undergoes preliminary solid-liquid separation at the "V"-shaped bottom of the sedimentation barrel. The through hole diameter of the sedimentation barrel in the middle layer is smaller than the through hole diameter of the uppermost sedimentation barrel, which can further achieve solid-liquid separation. The through hole diameter of the sedimentation barrel in the bottom layer is smaller than the through hole diameter of the sedimentation barrel in the middle layer, and the sedimentation barrels are distributed in a stepped manner. The wastewater flows from the uppermost sedimentation barrel to the middle and lower sedimentation barrels in turn, and solid-liquid separation is gradually performed. The separated water finally enters the water storage tank through the right outlet, while the sediment and particulate matter enter the recovery tank through the sewage pipe.

[0008] Preferably, each reaction zone is provided with a microporous aeration head, each aeration head is connected to a multi-way control valve, and the other end of the multi-way control valve is fixedly connected to an oxygen device. The organisms in the biological culture dishes in each reaction zone here are different, representing different reaction stages, from left to right, they are the ammoniation stage, nitrification stage and denitrification stage. Each stage uses corresponding organisms to carry out precise reactions, and different organisms require different oxygen conditions. Therefore, they need to be individually controlled by a multi-way control valve to ensure that the organisms in each reaction stage can obtain the most appropriate oxygen supply. The reactions carried out in each reaction stage are known existing technologies and do not require additional separate explanation.

[0009] Preferably, a heating device is fixed to the bottom of each reaction zone, and a temperature sensor and a dissolved oxygen sensor are fixedly connected to the inner wall of each reaction zone. The temperature sensor and the dissolved oxygen sensor will monitor the temperature and oxygen status in each reaction zone in real time and feed back to the terminal. When it is detected that the temperature and oxygen do not meet the requirements of biological growth, the terminal control system will control the heating device to heat and provide temperature support for biological growth. When the oxygen amount is not sufficient, the terminal control system will control the multi-way control valve to increase oxygen input to the corresponding area to provide oxygen support for biological growth.

[0010] Preferably, a first valve is fixedly connected to the connection between the sewage pipe and the sedimentation tank, the other end of the sewage pipe is fixedly connected to the recovery box, and a return pipe is fixedly connected to the bottom of the recovery box.

[0011] Preferably, the bottom of each reaction zone is fixedly connected to a sewage pipe, and a second valve is fixed at the connection between the sewage pipe and each reaction zone. The other end of the sewage pipe is fixedly connected to a recovery box. The second valve here does not remain open all the time. The terminal control device can regularly control the opening of the second valve according to the set time, and regularly discharge the precipitates and particles generated in each reaction zone in the bioreactor into the recovery box for recycling and treatment.

[0012] Preferably, the check valve, the multi-way control valve, the first valve, the second valve, the heating device, the temperature sensor and the dissolved oxygen sensor are respectively connected to the terminal control device. It should be noted that the connection method between the terminal control device and the check valve, the multi-way control valve, the first valve, the second valve, the heating device, the temperature sensor and the dissolved oxygen sensor is the existing technology, so it will not be introduced in detail. At the same time, the recovery and treatment of pollutants such as sediment in the recovery box belongs to the existing technology and no further explanation is needed.

[0013] (3) Beneficial effects

[0014] (1) The filter plate is used to vertically divide the wastewater into three sedimentation zones, and the sedimentation barrels are arranged in a stepped pattern, which enhances the sedimentation effect and filtration capacity. The "V" shape and zigzag pattern on the bottom of the sedimentation barrel further increase the sedimentation efficiency and ensure that the suspended matter and impurities in the wastewater are effectively separated.

[0015] (2) By installing a "V"-shaped partition and biological culture dish in the bioreactor, the attachment and growth area of microorganisms in the reaction tank is increased, thereby improving the biodegradation efficiency. The microporous aeration head installed in each reaction zone can provide sufficient oxygen, promote the activity of microorganisms, and further improve the removal efficiency of ammonia nitrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall schematic diagram of the utility model

[0017] Figure 2 This is a top view of the bioreactor in this utility model

[0018] Figure 3 Schematic diagram of the sedimentation tank in this utility model

[0019] Figure 4 Schematic diagram of the "V"-shaped bottom of the sedimentation tank in this utility model

[0020] In the figure: 1-biological reaction tank, 101-reaction zone, 11-"V"-shaped partition, 12-biological culture dish, 13-through hole, 14-check valve, 15-water outlet, 16-microporous aeration head, 17-multi-way control valve, 18-oxygen device, 19-heating device, 191-temperature sensor, 192-dissolved oxygen sensor, 2-sedimentation tank, 200-sedimentation zone, 21-filter plate, 22-sedimentation barrel, 23-"V"-shaped bottom, 230-through hole, 4-sewage pipe, 41-first valve, 5-sewage pipe, 51-second valve, 6-recovery box, 61-reflux pipe. DETAILED DESCRIPTION

[0021] The following is a combination of the appended examples of the present invention Figure 1 -Attached Figure 4 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0022] Example 1: Figure 1As shown, the first specific embodiment of the present invention provides a bioreactor system for treating high-ammonia nitrogen printing and dyeing wastewater, including a bioreactor 1 and a sedimentation tank 2 connected to the bioreactor 1 through a pipeline. A plurality of "V"-shaped partitions 11 are provided in the bioreactor 1. The "V"-shaped partitions 11 divide the bioreactor 1 into three reaction zones 101 on an even basis. The surfaces of the "V"-shaped partitions 11 are provided with serrated patterns. A biological culture dish 12 is fixedly connected to the inner wall of each reaction zone 101. A through hole 13 is provided at the bottom of each "V"-shaped partition 11. A check valve 14 is provided at each through hole 13. A water outlet 15 is provided on the right side of the bioreactor 1. The water outlet 15 is connected to the sedimentation tank through a pipeline. The pool 2 is fixedly connected, and is characterized in that a number of filter plates 21 are arranged in the sedimentation tank 2, and the filter plates 21 divide the sedimentation tank 2 vertically into three sedimentation areas 200, and each sedimentation area 200 is provided with a sedimentation barrel 22, and the three sedimentation barrels 22 are distributed in a stepped manner from top to bottom and are connected by pipes in sequence. The bottom of each sedimentation barrel 22 is set to a "V"-shaped bottom 23, and the surface of the "V"-shaped bottom 23 is provided with serrated patterns and a number of through holes 230 are evenly arranged between the serrated patterns. The right side of the bottom of the sedimentation tank 2 is fixedly connected to a water outlet pipe 3, and the bottom of the sedimentation tank 2 is fixedly connected to a sewage pipe 4. The filter plate divides it vertically into three sedimentation areas, and the sedimentation barrels are arranged in a stepped distribution, which enhances the sedimentation effect and filtering capacity. The "V"-shaped design and zigzag pattern on the bottom of the sedimentation tank further enhances sedimentation efficiency, ensuring the effective separation of suspended solids and impurities in the wastewater. Furthermore, the installation of "V"-shaped baffles and biological culture dishes within the bioreactor increases the area for microbial attachment and growth, thereby improving biodegradation efficiency. Microporous aeration heads in each reaction zone provide ample oxygen, promoting microbial activity and further enhancing ammonia nitrogen removal efficiency.

[0023] The diameters of the plurality of through holes 230 decrease from top to bottom. The design of the through holes that decrease step by step can achieve step-by-step filtration, which improves the clarity of the water step by step. Specifically, the upper through holes remove larger particles, which reduces the burden on the smaller through holes in the lower layer, avoids premature clogging of the lower through holes, and extends the service life of the filtration device. Step-by-step filtration effectively reduces the concentration of suspended matter, purifies the water layer by layer, significantly reduces the turbidity of the effluent, and greatly improves the water quality. In addition, the larger through holes in the upper layer remove large particles first, which reduces the impact of the water flow on the sediment in the lower layer and reduces the possibility of sediment resuspension. The step-by-step decreasing through hole structure reduces the drastic changes in the water flow, maintains the stability of the water flow, and avoids the sediment being disturbed and resuspended. By changing the size of the through holes step by step, the solid-liquid separation efficiency can be significantly improved, clogging and scaling can be prevented, the precipitation effect can be optimized, and the water flow distribution can be improved, thereby improving the treatment efficiency and effluent quality of high-ammonia nitrogen printing and dyeing wastewater.

[0024] Each reaction zone 101 is provided with a microporous aeration head 16, and each aeration head 16 is respectively connected to a multi-way control valve 17, and the other end of the multi-way control valve 17 is fixedly connected to an oxygen device 18. The microporous aeration heads are evenly arranged in each reaction zone to ensure that oxygen is evenly distributed throughout the reaction zone. The evenly distributed aeration heads can prevent the problem of insufficient oxygen in local areas, ensure that microorganisms in the entire reaction zone can obtain sufficient oxygen, and improve the wastewater treatment efficiency. In addition, the uniform distribution of oxygen can maintain the biological activity of the entire reaction zone, improve the degradation efficiency of ammonia nitrogen and organic matter, and ensure the uniformity of the wastewater treatment effect. In addition, the uniform oxygen supply of the microporous aeration head can promote the growth and reproduction of microorganisms, and the sufficient oxygen supply can enhance the degradation ability of aerobic microorganisms to ammonia nitrogen and organic matter, and improve the removal efficiency of pollutants in wastewater.

[0025] More importantly, high-ammonia nitrogen wastewater requires effective biological treatment to remove the ammonia nitrogen. For example, nitrifying bacteria require large amounts of oxygen to convert ammonia nitrogen into nitrates. Microporous aeration heads can provide sufficient oxygen to support the smooth progress of the nitrification process and improve the efficiency of ammonia nitrogen removal. A sufficient oxygen supply can accelerate the degradation of ammonia nitrogen, significantly reducing the ammonia nitrogen concentration in the wastewater and ensuring that the effluent water quality meets discharge standards.

[0026] A heating device 19 is fixed to the bottom of each reaction zone 101, and a temperature sensor 191 and a dissolved oxygen sensor 192 are fixedly connected to the inner wall of each reaction zone 101. The temperature of the reaction zone can be accurately controlled by the heating device 19, and the appropriate temperature can increase the metabolic rate of microorganisms and enhance their ability to decompose pollutants. Especially in the process of nitrification and denitrification, temperature has a significant effect on the activity of microorganisms. Increased temperature can accelerate the rate of chemical reactions, including the conversion of ammonia nitrogen and the decomposition of organic matter, and improve the overall wastewater treatment efficiency. The temperature sensor 191 can monitor the temperature of the reaction zone in real time and provide accurate data. By monitoring the temperature in real time, the working state of the heating device can be adjusted in time according to actual conditions to avoid the adverse effects of excessively high or low temperatures on wastewater treatment. In addition, the data from the temperature sensor can help to promptly discover and solve temperature anomalies, ensure the stable operation of the wastewater treatment system, and improve treatment efficiency.

[0027] A first valve 41 is fixedly connected to the connection between the sewage pipe 4 and the sedimentation tank 2, and the other end of the sewage pipe 4 is fixedly connected to the recovery tank 6. A return pipe 61 is fixedly connected to the bottom of the recovery tank 6. The first valve 41 is located at the connection between the sewage pipe 4 and the sedimentation tank 2, which can achieve precise control of wastewater discharge. By adjusting the switch of the valve, the flow rate and discharge time of the wastewater can be controlled to ensure that the wastewater is discharged according to the set conditions and avoid excessive or insufficient discharge. Accurate drainage control can effectively reduce the risk of pollution to the surrounding environment, ensure that the discharge complies with environmental protection laws and standards, and protect the safety of the surrounding ecological environment. In addition, by connecting the sewage pipe 4 to the recovery tank 6, some of the treated wastewater can be guided to the recovery tank for secondary use or further treatment. The return pipe 6 is used to guide the treated water in the recovery tank back to the system to achieve the recycling of water resources. By recycling and reusing treated water, the demand for fresh water resources can be reduced, the water consumption in the production process can be reduced, and it is in line with the environmental protection concept of sustainable development.

[0028] The bottom of each reaction zone 101 is fixedly connected to a sewage pipe 5, and a second valve 51 is fixed at the connection between the sewage pipe 5 and each reaction zone 101. The other end of the sewage pipe 5 is fixedly connected to a recovery tank 6. Similarly, the second valve 51 can achieve precise control of wastewater discharge to ensure that the wastewater is discharged according to the set conditions. At the same time, through the recovery tank 6 and corresponding treatment facilities, water resources can be recycled, reducing the demand for fresh water and reducing water resource consumption in the production process.

[0029] The check valve 14, multi-way control valve 17, first valve 41, second valve 51, heater 19, temperature sensor 191, and dissolved oxygen sensor 192 are each connected to the terminal control device. Each component connected to the terminal control device enables real-time monitoring of key parameters during the treatment process, such as temperature and dissolved oxygen concentration. The terminal control device can automatically adjust the operating status of equipment such as the heater 19 and multi-way control valve 17 based on data provided by the sensors, optimizing various wastewater treatment parameters to improve treatment efficiency and reduce energy consumption. The connection between the check valve 14, first valve 41, and second valve 51 enables precise control of flow and discharge during the wastewater treatment process, ensuring the flow direction and treatment effectiveness of the wastewater. The linkage between the heater 19 and temperature sensor 191 enables precise control of the reaction temperature, ensuring stable reaction conditions during the treatment process and improving treatment efficiency and reaction rate.

[0030] Working principle: When in use, high ammonia nitrogen printing and dyeing wastewater enters the bioreactor 1 from the leftmost side of the bioreactor 1, and the microporous aeration head 16 is opened to provide the oxygen required in the reaction zone. The wastewater first reacts with the organisms in the leftmost reaction zone. Subsequently, the check valve 14 is opened through the terminal system control, so that the reacted wastewater can enter the next reaction zone through the through hole 13 at the bottom of the "V"-shaped partition 11 and react with the organisms in the next reaction zone. After the wastewater reacts through each reaction zone in the bioreactor in turn, it enters the sedimentation tank 2 from the rightmost outlet 15. The wastewater entering the sedimentation tank 2 first enters the uppermost sedimentation barrel 22. When the wastewater contacts the "V"-shaped bottom 23, the water in the wastewater passes through several The dry through hole 230 flows downward through the filter plate 21 and enters the middle layer, while the suspended matter and particles in the wastewater cannot pass through the through hole 230, but are concentrated through the zigzag pattern and the "V"-shaped bottom and enter the sedimentation barrel 22 in the middle layer. The sedimentation barrel 22 in the middle layer performs another solid-liquid separation on the incoming wastewater. Finally, the wastewater reaches the sedimentation barrel 22 in the bottom layer for another solid-liquid separation. At this time, the separated water will enter the water storage tank through the outlet pipe 3. Subsequently, the first valve 41 is opened by controlling the terminal system, and the suspended matter and particles separated from the wastewater enter the recovery box 6 through the sewage pipe 4. The recovery box 6 recycles the suspended matter and particles and returns them to the bioreactor 1 through the reflux pipe 61 for further processing.

[0031] The sediment and particles produced by the long-term reaction in the bioreactor 1 are periodically controlled by the terminal control device to open the second valve 51. After the second valve 51 is opened, the sediment and particles at the bottom of each reaction zone can enter the recovery box 6 through its corresponding discharge pipe 5. The recovery box 6 recovers the suspended matter and particles and returns them to the bioreactor 1 through the reflux pipe 61 for further processing.

Claims

1. A bioreactor system for treating high-ammonia nitrogen printing and dyeing wastewater, comprising a bioreactor (1) and a sedimentation tank (2) connected to the bioreactor (1) via a pipeline, wherein a plurality of V-shaped partitions (11) are provided in the bioreactor (1), wherein the V-shaped partitions (11) divide the bioreactor (1) into three reaction zones (101) in a horizontal direction, wherein the surfaces of the V-shaped partitions (11) are provided with serrated patterns, wherein the inner walls of each reaction zone (101) are fixedly connected to a biological culture dish (12), wherein the bottom of each V-shaped partition (11) is provided with a through hole (13), wherein each through hole (13) is provided with a check valve (14), wherein a water outlet (15) is provided on the right side of the bioreactor (1), wherein the water outlet (15) is fixedly connected to the sedimentation tank (2) via a pipeline, wherein: A plurality of filter plates (21) are provided in the sedimentation tank (2), and the filter plates (21) vertically divide the sedimentation tank (2) into three sedimentation areas (200). A sedimentation barrel (22) is provided in each sedimentation area (200). The three sedimentation barrels (22) are distributed in a stepped manner from top to bottom and are sequentially connected by pipes. The bottom of each sedimentation barrel (22) is provided with a "V"-shaped bottom (23). The surface of the "V"-shaped bottom (23) is provided with serrated patterns, and a plurality of through holes (230) are evenly provided between the serrated patterns. A water outlet pipe (3) is fixedly connected to the right side of the bottom of the sedimentation tank (2), and a sewage discharge pipe (4) is fixedly connected to the bottom of the sedimentation tank (2).

2. A bioreactor system for treating high-ammonia nitrogen printing and dyeing wastewater according to claim 1, characterized in that: The diameters of the plurality of through holes (230) decrease sequentially from top to bottom.

3. A bioreactor system for treating high-ammonia nitrogen printing and dyeing wastewater according to claim 1, characterized in that: A microporous aeration head (16) is provided in each reaction zone (101), and each aeration head (16) is connected to a multi-way control valve (17). The other end of the multi-way control valve (17) is fixedly connected to an oxygen device (18).

4. A bioreactor system for treating high-ammonia nitrogen printing and dyeing wastewater according to claim 1, characterized in that: A heating device (19) is fixed to the bottom of each reaction zone (101), and a temperature sensor (191) and a dissolved oxygen sensor (192) are fixedly connected to the surface of each biological culture dish (12).

5. A bioreactor system for treating high-ammonia nitrogen printing and dyeing wastewater according to claim 1, characterized in that: The bottom of each reaction zone (101) is fixedly connected to a sewage pipe (5), a second valve (51) is fixed at the connection between the sewage pipe (5) and each reaction zone (101), and the other end of the sewage pipe (5) is fixedly connected to a recovery box (6).

6. A bioreactor system for treating high-ammonia nitrogen printing and dyeing wastewater according to claim 5, characterized in that: A first valve (41) is fixedly connected to the connection between the sewage pipe (4) and the sedimentation tank (2), the other end of the sewage pipe (4) is fixedly connected to the recovery box (6), and a return pipe (61) is fixedly connected to the bottom of the recovery box (6).

7. A bioreactor system for treating high-ammonia nitrogen printing and dyeing wastewater according to claim 1, characterized in that: The check valve (14), the multi-way control valve (17), the first valve (41), the second valve (51), the heating device (19), the temperature sensor (191) and the dissolved oxygen sensor (192) are respectively connected to the terminal control device.

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