Sequencing batch type hydrolytic acidification reaction device
By designing an integrated sequential batch hydrolysis and acidification reaction device, the problems of filler blockage and high operating costs in traditional devices are solved, and efficient hydrolysis and acidification treatment and low-cost operation are achieved.
Patent Information
- Application Number
- CN202421179100.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing hydrolysis and acidification process devices have problems such as filler blockage, toxic substances inhibit biofilm growth and high construction and operation costs.
A sequential batch hydrolysis and acidification reaction device is designed, integrating the functions of water inlet, reaction, precipitation, drainage and sludge discharge. It adopts a conical mud bucket and a reactor set up in parallel to avoid the use of combined fillers.
It effectively solves the problem of filler blockage, improves the hydrolysis and acidification treatment effect, reduces operation and maintenance costs, and is suitable for high-concentration organic wastewater and low-B/C ratio industrial wastewater.
Smart Images
Figure CN222498853U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to a sequencing batch hydrolysis acidification reaction device. Background Art
[0002] At present, most hydrolysis and acidification process devices adopt the form of "combined fillers filled in the hydrolysis and acidification tank + flow pusher stirring". The suspended organic solids and difficult-to-biodegrade macromolecules in the sewage are hydrolyzed into soluble organic matter and easily biodegradable small molecules under the action of anaerobic or facultative bacteria attached to and growing on the combined fillers during the hydrolysis and acidification stages. This treatment process improves the biodegradability of sewage and can reduce the treatment load of the subsequent aerobic stage. It has been widely used in high-concentration organic wastewater or industrial wastewater treatment projects.
[0003] However, in actual engineering applications, the following problems exist: first, the high concentration of suspended solids in the influent blocks the composite packing and affects the amount of biological carriers in the packing; second, the entry of toxic and hazardous substances seriously inhibits the growth of biofilm on the composite packing; third, the amount of biofilm on the composite packing is limited, the construction investment of the composite packing is high, and the operating and maintenance costs are high.
[0004] Therefore, a sequencing batch hydrolysis acidification reaction device is urgently needed to solve the above problems. Utility Model Content
[0005] The utility model aims to provide a sequencing batch hydrolysis acidification reaction device, which does not need to be provided with a combined filler, and can fundamentally solve the clogging problem of the traditional hydrolysis acidification combined filler. The reaction device integrates the functions of water intake, reaction, precipitation, drainage and sludge discharge, is suitable for high-concentration organic wastewater or low B / C ratio industrial wastewater, and can maintain a higher biological carrier concentration inside the system, thereby improving the hydrolysis acidification treatment effect.
[0006] To achieve the above-mentioned purpose, the utility model provides a sequencing batch hydrolysis acidification reaction device, comprising at least one reactor arranged in parallel, the reactor comprising a tank body, a water inlet unit and a stirring unit are arranged on the top of the tank body, the water inlet unit comprises a water inlet pipe connected to the tank body, the stirring unit comprises a stirring shaft penetrating the top of the tank body and extending into the lower part of the tank body and a stirring paddle arranged at the lower end of the stirring shaft, a conical mud hopper is arranged at the bottom of the tank body, a mud discharge unit is arranged at the bottom of the conical mud hopper, the mud discharge unit comprises a mud discharge pipe connected to the conical mud hopper, a water outlet unit is arranged on the side of the tank body, the water outlet unit comprises a plurality of water outlet pipes, and the plurality of water outlet pipes are arranged at intervals on the tank body along the vertical direction and are connected to the tank body.
[0007] Compared with the conventional hydrolysis and acidification reaction device including a combined filler and a stirrer, the sequencing batch hydrolysis and acidification reaction device of the utility model has the following beneficial effects:
[0008] (1) A conical mud hopper is provided at the bottom of the tank body of the reactor of the utility model, which can improve the residual sludge concentration effect, and the concentrated sludge has a high solid content, thereby improving the sludge discharge efficiency. A sludge discharge unit is provided at the bottom of the conical mud hopper, and the sludge discharge amount can be controlled by controlling the sludge discharge control valve in the sludge discharge unit. Specifically, the concentration of the activated sludge in the reactor tank body can be quickly increased by reducing or not removing the residual sludge in the conical mud hopper to resist the inhibitory effect of high-concentration or toxic wastewater, thereby improving the hydrolysis and acidification treatment capacity. Therefore, the reaction device of the utility model does not need to be provided with a combined filler, thereby fundamentally solving the problem of filler clogging, and is suitable for high-concentration organic wastewater or low B / C ratio industrial wastewater.
[0009] (2) The sequencing batch hydrolysis and acidification reaction device of the utility model includes at least one reactor arranged in parallel, and the reactor is provided with a water inlet unit, a stirring unit, a water outlet unit and a mud discharge unit. Therefore, a single reactor integrates the functions of water inlet, reaction, precipitation, water discharge and mud discharge, saving construction investment and operation and maintenance costs; the reactors arranged in parallel make the hydrolysis and acidification reaction device of the utility model in a continuous operation state, accelerating the sewage hydrolysis and acidification treatment process.
[0010] (3) The water outlet unit of the utility model includes a plurality of water outlet pipes connected to the side of the tank body, and the plurality of water outlet pipes are arranged at intervals in the vertical direction. Different water filling ratios can be controlled by water outlet pipes of different heights to adapt to sewage treatment with different pollution degrees, thereby improving the practicality of the sequencing batch hydrolysis acidification reaction device of the utility model.
[0011] As a preferred technical solution, the angle between the side slope of the conical mud bucket and the horizontal plane is 60°.
[0012] As a preferred technical solution, the stirring unit also includes a stirring motor, which is arranged above the top of the tank body and connected to the upper end of the stirring shaft.
[0013] As a preferred technical solution, a liquid level gauge is also provided on the top of the tank body.
[0014] As a preferred technical solution, an exhaust unit is further provided on the top of the tank body, and the exhaust unit includes an exhaust pipe connected to the top of the tank body.
[0015] As a preferred technical solution, a water inlet control valve is provided on the water inlet pipe, and a water outlet control valve is provided on the water outlet pipe.
[0016] As a preferred technical solution, a mud discharge control valve is provided on the mud discharge pipe.
[0017] As a preferred technical solution, the water inlet unit also includes a water inlet main pipe, and the output end of the water inlet main pipe is connected to the water inlet pipe.
[0018] As a preferred technical solution, the water outlet unit further includes a water outlet main pipe, and the water outlet main pipe is connected to the output end of the water outlet pipe.
[0019] As a preferred technical solution, the mud discharge unit further includes a mud discharge main pipe, which is connected to the output end of the mud discharge pipe, and a mud discharge flow meter is provided on the mud discharge main pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 Schematic diagram of a sequential batch hydrolysis acidification reaction device according to an embodiment of the utility model
[0021] Explanation of component symbols: 100-reactor, 10-tank body, 11-water inlet unit, 111-water inlet pipe, 112-water inlet control valve, 113-water inlet main pipe, 12-stirring unit, 121-stirring motor, 122-stirring shaft, 123-stirring paddle, 13-conical mud bucket, 14-mud discharge unit, 141-mud discharge pipe, 142-mud discharge control valve, 143-mud discharge main pipe, 144-mud discharge flowmeter, 15-water outlet unit, 151-water outlet pipe, 152-water outlet control valve, 153-water outlet main pipe, 16-exhaust unit, 161-exhaust pipe, 162-exhaust main pipe, liquid level meter 17. DETAILED DESCRIPTION
[0022] In order to better illustrate the purpose, technical solution and beneficial effects of the utility model, the utility model will be further described below in conjunction with the accompanying drawings. It should be noted that the embodiments described below are only part of the embodiments of the utility model, not all of them.
[0023] The terms "include", "comprising", etc. used herein indicate the presence of the features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components. All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.
[0024] In this document, unless otherwise specified, directional terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device, element or component referred to must have a specific orientation, be constructed or operate in a specific orientation. It should be understood that when the absolute position of the described object changes, the relative positional relationship they represent may also change accordingly. Therefore, these directional terms cannot be understood as limiting the present invention.
[0025] Please refer to Figure 1 The utility model provides a sequencing batch hydrolysis acidification reaction device, including at least one reactor 100 arranged in parallel. The reactor 100 includes a tank body 10, a water inlet unit 11 and a stirring unit 12 are arranged on the top of the tank body 10, a conical mud hopper 13 is arranged at the bottom of the tank body 10, a mud discharge unit 14 is arranged at the bottom of the conical mud hopper 13, and a water outlet unit 15 is arranged on the side of the tank body 10. The sequencing batch hydrolysis acidification reaction device of the utility model includes at least one reactor 100 arranged in parallel, and the reactor 100 includes a water inlet unit 11, a stirring unit 12, a mud discharge unit 14 and a water outlet unit 15. For a single reactor, the functions of water inlet, reaction, precipitation, water discharge and mud discharge are integrated, which belongs to intermittent operation; for at least one reactor arranged in parallel, the reactors take turns and complete the four stages of water inlet, reaction, precipitation, water discharge and mud discharge in sequence, so that the hydrolysis acidification reaction device of the utility model belongs to continuous operation.
[0026] The water inlet unit 11 is used to input the sewage to be treated into the tank body 10 for treatment. The water inlet unit 11 includes a water inlet pipe 111, and a water inlet control valve 112 is also provided on the water inlet pipe 111. The inflow of sewage is controlled by controlling the opening and closing of the water inlet control valve 112, so that the sewage can be better hydrolyzed and acidified. The water inlet unit 11 also includes a water inlet main pipe 113, the output end of the water inlet main pipe 113 is connected to the input end of the water inlet pipe 112, and the output end of the water inlet pipe 112 is connected to the top of the tank body 10. During the water inlet process, the water inlet control valve is first opened, and the sewage to be treated enters the water inlet pipe 112 through the water inlet main pipe 111, and then enters the tank body 10 for treatment.
[0027] The stirring unit 12 includes a stirring motor 121, a stirring shaft 122 and a stirring paddle 123. The stirring shaft 122 passes through the top of the tank body 10 and extends into the bottom of the tank body 10. The stirring paddle 123 is fixedly arranged at the lower end of the stirring shaft 122. The stirring motor 121 is arranged above the top of the tank body 10 and connected to the upper end of the stirring shaft 122. During the water intake and hydrolysis acidification reaction process, the stirring motor 121 is turned on. Under the power of the stirring motor 121, the stirring shaft 122 is driven to rotate, and then the stirring paddle 123 fixedly arranged at the lower end of the stirring shaft 122 is driven to rotate, so that the sewage and the activated sludge are better mixed and reacted during the hydrolysis acidification process to improve the hydrolysis acidification effect.
[0028] The conical mud hopper 13 is located at the bottom of the tank body 10 and is used for sedimentation and concentration of the activated sludge. The conical mud hopper 13 and the tank body 10 are an integrally formed structure, and the side slope of the conical mud hopper 13 forms an angle of 60° with the horizontal plane. The setting of this angle can further improve the activated sludge concentration effect and the solid content of the concentrated sludge, thereby improving the sludge discharge efficiency.
[0029] The mud discharge unit 14 is used to discharge the sludge inside the tank body 10. The mud discharge unit 14 includes a mud discharge pipe 141, which is connected to the conical mud bucket 13. In this embodiment, the mud discharge pipe 141 is connected to the bottom of the conical mud bucket 13, so that the mud discharge process is smoother. A mud discharge control valve 142 is also provided on the mud discharge pipe 141. The mud discharge control valve 142 is opened or closed to control the amount of activated sludge discharged, thereby meeting different treatment requirements of sewage with different concentrations. The mud discharge unit 14 also includes a mud discharge main pipe 143, which is connected to the output end of the mud discharge pipe 141. During the sludge discharge process, the sludge discharge control valve 142 is first opened, and the sludge in the conical sludge hopper 13 enters the sludge discharge pipe 141 under the action of gravity, and then enters the sludge discharge main pipe 143 connected thereto from the output end of the sludge discharge pipe 121, and continues to be output to the next step of processing through the sludge discharge main pipe 143. A sludge discharge flowmeter 144 is also provided on the sludge discharge main pipe 143, and the sludge discharge volume can be obtained through the sludge discharge flowmeter 144.
[0030] The water outlet unit 15 is used to discharge the clean water processed in the reactor 100 to the outside of the tank body. The water outlet unit 15 includes a plurality of water outlet pipes 151, which are arranged at intervals in the vertical direction on the tank body 10 and are connected to the tank body 10, that is, each water outlet pipe 151 is at a different height on the tank body 10. A water outlet control valve 152 is also provided on the water outlet pipe 151, and different water filling ratios are controlled by opening the water outlet control valves 152 on the water outlet pipes 151 at different heights, and the water filling ratio specifically refers to the ratio of the sewage inlet volume to the total effective volume of the reactor. In the present utility model, the water filling ratio of the reactor can be 60% to 80%. Specifically, the water outlet control valve 152 with the highest opening height is used to drain water, and more mixed liquid remains in the tank body 10, so a low water filling ratio can be achieved; the water outlet control valve 152 with the lowest opening height is used to drain water, and less mixed liquid remains in the tank body 10, so a high water filling ratio can be achieved. When the pollutant concentration of the inlet sewage is high, a low filling ratio is used, and when the pollutant concentration of the inlet sewage is low, a high filling ratio is used. Such a setting can meet the sewage treatment of different pollution concentrations, and improves the scope of application of the reaction device of the utility model. In this embodiment, there are 4 outlet pipes 151, and the 4 outlet pipes 151 are arranged at intervals in the vertical direction, and are all connected to the tank body 10. The 4 outlet pipes 151 are each independently provided with an outlet control valve 152 to meet the needs of controlling different drainage volumes. The water outlet unit 15 also includes an outlet main pipe 153, and the outlet main pipe 153 is connected to the output end of the outlet pipe 151. During the drainage process, the outlet control valve 152 is first opened, and the upper layer of clean water inside the tank body 10 enters the outlet main pipe 153 from the outlet pipe 151, and is output to the next step of treatment through the outlet main pipe 153.
[0031] An exhaust unit 16 is also provided at the top of the tank body 10, and the exhaust unit 16 is used to discharge the waste gas generated by the hydrolysis and acidification reaction inside the tank body 10 to the biological deodorization system outside the reaction device. The exhaust unit 16 includes an exhaust pipe 161 connected to the top of the tank body 10, and an exhaust main pipe 162 is provided at the output end of the exhaust pipe 161, and the output end of the exhaust main pipe 162 is connected to the biological deodorization system (not shown in the figure). The gas in the tank body 10 enters the exhaust main pipe 162 through the exhaust pipe 161, and is then transported to the biological deodorization system for treatment through the exhaust main pipe 162.
[0032] A liquid level meter 17 is also provided on the top of the tank body 10 to monitor the liquid level inside the tank body 10. In this embodiment, the liquid level meter 17 may be an ultrasonic level meter, which can accurately control the single water intake and sludge discharge, and control the sludge concentration in the reactor 100 by reducing or increasing the discharge.
[0033] Please continue to refer to Figure 1In this embodiment, there are four reactors 100, which are respectively the first reactor (not marked in the figure), the second reactor (not marked in the figure), the third reactor (not marked in the figure) and the fourth reactor (not marked in the figure) from left to right. Based on this, the sequencing batch hydrolysis acidification reaction device of the present invention is described in detail.
[0034] (1) The first reactor is in the water inlet stage, the water inlet control valve 112 is opened, and the sewage enters the tank body 10. At this time, the stirring motor 121 is in operation, the water outlet control valve 152 and the sludge discharge control valve 142 are in the closed state, and the liquid level meter 17 monitors that the mixed liquid inside the tank body 10 reaches the specified liquid level, and then the water inlet control valve 112 is closed. The water inlet stage lasts for about 2 hours. At the same time, the sewage in this process is fully mixed with the bottom precipitated activated sludge under the stirring action of the stirring unit 12, and a biological reaction occurs. After the water inlet stage of the first reactor is completed, it enters the reaction stage.
[0035] (2) The second reactor is in the reaction stage, the water inlet control valve 112, the water outlet control valve 152 and the sludge discharge control valve 142 are all in the closed state, and the stirring motor 121 is continuously operated to make the mixed liquid undergo hydrolysis and acidification reaction. The reaction stage lasts for about 4 hours. Under the stirring action of the stirring motor 121, the sewage and the activated sludge are fully mixed, and a biological reaction occurs. After the reaction stage of the second reactor is completed, it enters the precipitation stage.
[0036] (3) The third reactor is in the sedimentation stage, and the water inlet control valve 112, the water outlet control valve 152, the mud discharge control valve 142 and the stirring motor 121 are all in the closed state. In this process, the suspended sludge inside the third reactor is gradually stratified to achieve mud and water separation, and the supernatant is located at the top. The sludge is deposited in the conical mud bucket at the bottom of the reactor through squeezing and concentration. The sedimentation stage lasts about 1 hour. After the sedimentation stage of the third reactor is completed, it enters the water discharge and mud discharge stage.
[0037] (4) The fourth reactor is in the water discharge and sludge discharge stage. The water inlet control valve 112 and the stirring motor 121 are both in the closed state. First, the water outlet control valve 152 is opened in sequence from high to low to discharge the supernatant. When the liquid level meter 17 detects that the liquid level has reached the set position, the water outlet control valve 152 is closed. Then the sludge discharge control valve 142 is opened to discharge the sludge. When the liquid level meter 17 detects that the liquid level has reached the set position, the sludge discharge control valve 142 is closed. The water discharge and sludge discharge stage lasts for about 1 hour. The activated sludge that has not been discharged is refluxed as sludge in the water inlet stage, thereby maintaining the sludge concentration inside the hydrolysis acidification reactor. After completing the water discharge and sludge discharge stage, the fourth reactor re-enters the water inlet stage.
[0038] (5) The odor generated during the whole process is transported to the biological deodorization system through the exhaust pipe 161 and the exhaust main pipe 162 for centralized treatment.
[0039] (6) A single reactor sequentially undergoes a water inlet stage, a reaction stage, a sedimentation stage, and a drainage and sludge discharge stage to form a cycle. The four hydrolysis and acidification reactors are in different stages, forming an overall continuously operating hydrolysis and acidification reaction device.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention is described in detail with reference to the preferred embodiments, it is not limited to those listed in the embodiments. Those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.
Claims
1. A sequencing batch hydrolysis and acidification reaction device, characterized in that: The invention comprises at least one reactor arranged in parallel, wherein the reactor comprises a tank body, a water inlet unit and a stirring unit are arranged on the top of the tank body, the water inlet unit comprises a water inlet pipe connected with the tank body, the stirring unit comprises a stirring shaft penetrating the top of the tank body and extending into the lower part of the tank body and a stirring paddle arranged at the lower end of the stirring shaft, a conical mud hopper is arranged at the bottom of the tank body, a mud discharge unit is arranged at the bottom of the conical mud hopper, the mud discharge unit comprises a mud discharge pipe connected with the conical mud hopper, a water outlet unit is arranged on the side of the tank body, the water outlet unit comprises a plurality of water outlet pipes, and the plurality of water outlet pipes are arranged at intervals on the tank body in the vertical direction and connected with the tank body.
2. The sequencing batch hydrolysis acidification reaction device according to claim 1, characterized in that: The angle between the side slope of the conical mud bucket and the horizontal plane is 60°.
3. The sequencing batch hydrolysis acidification reaction device according to claim 1, characterized in that: The stirring unit further comprises a stirring motor, which is arranged above the top of the tank body and connected to the upper end of the stirring shaft.
4. The sequencing batch hydrolysis acidification reaction device according to claim 1, characterized in that: A liquid level gauge is also provided on the top of the tank body.
5. The sequencing batch hydrolysis acidification reaction device according to claim 1, characterized in that: The top of the tank body is also provided with an exhaust unit, and the exhaust unit comprises an exhaust pipe communicated with the top of the tank body.
6. The sequencing batch hydrolysis acidification reaction device according to claim 1, characterized in that: The water inlet pipe is provided with a water inlet control valve, and the water outlet pipe is provided with a water outlet control valve.
7. The sequencing batch hydrolysis acidification reaction device according to claim 1, characterized in that: The mud discharge pipe is provided with a mud discharge control valve.
8. The sequencing batch hydrolysis acidification reaction device according to claim 1, characterized in that: The water inlet unit also includes a water inlet main pipe, and the output end of the water inlet main pipe is connected to the water inlet pipe.
9. The sequencing batch hydrolysis acidification reaction device according to claim 1, characterized in that: The water outlet unit further comprises a water outlet main pipe, and the water outlet main pipe is connected with the output end of the water outlet pipe.
10. The sequencing batch hydrolysis acidification reaction device according to claim 1, characterized in that: The mud discharge unit further comprises a mud discharge main pipe, which is communicated with the output end of the mud discharge pipe, and a mud discharge flow meter is also arranged on the mud discharge main pipe.