Sewage treatment bioreactor

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment bioreactor which comprises a shell, a stirring component arranged at the top in the shell, an aeration component and a gas collection component arranged in the shell, a sludge pump fixedly mounted on one side of the bottom of the shell, and a circulating component fixedly connected to the output end of the sludge pump; the gas collection assembly comprises a first gas collection frame, a first gas conveying pipe is fixedly connected to the first gas collection frame, a through hole is formed in the first gas conveying pipe, and a second gas collection frame is arranged at the top of the first gas collection frame. The device has the beneficial effects that when the device is used, the mixing effect of sewage and aeration bubbles is improved, so that the aeration treatment effect is improved; the biogas generated by the anaerobic reaction and the gas generated by the aeration treatment can be separately discharged, and the biogas can be collected for subsequent utilization, so that the potential safety hazard caused by discharging the biogas along with the aerated gas is avoided, and meanwhile, the pollution caused by directly discharging the biogas is avoided.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment bioreactor. Background Technology

[0002] Wastewater treatment bioreactors are devices that utilize the metabolic activity of microorganisms to convert organic pollutants in wastewater into harmless substances, thereby achieving wastewater purification. They are generally classified into anaerobic bioreactors, aerated bioreactors, and biofilm reactors. Biofilm reactors utilize microorganisms attaching to the surface of packing materials to form a biofilm structure. The packing materials provide a carrier for the microorganisms to grow, metabolize, and decompose organic pollutants in the water. When wastewater flows through the biofilm, the organic pollutants are adsorbed and decomposed by the microorganisms in the biofilm, thus purifying the wastewater. Anaerobic bioreactors utilize anaerobic microorganisms to decompose organic matter into biogas, water, and other harmless substances under anaerobic conditions. Aerated bioreactors integrate biological oxidation and suspended solids retention. By filling a filter bed with a certain amount of filter media, microorganisms attach and grow on the surface of the filter media to form a biofilm. Wastewater flows through the filter bed from top to bottom or bottom to top. Under the retention effect of the filter media and the decomposition effect of the biofilm, organic pollutants and ammonia nitrogen in the wastewater are removed. Simultaneously, aeration provides the dissolved oxygen needed by the microorganisms, promoting their metabolic activity.

[0003] A bioreactor and wastewater treatment system disclosed in Chinese Patent CN215886527U divides the reactor body into a top aerobic zone and a bottom anaerobic zone. Multiple guide tubes are distributed in the top aerobic zone. Sludge is introduced into the guide tubes from the bottom inlet using aerators below and exited from the top outlet, forming an internal circulation within the top aerobic zone. An external circulation pipeline circulates granular sludge from the bottom anaerobic zone to the top aerobic zone, forming an external circulation. Through reactor structure optimization, a reactor type suitable for aerobic granular sludge is provided, enabling continuous wastewater treatment with aerobic granular sludge, achieving the effect of intermittent wastewater treatment, and fully utilizing the high-efficiency treatment capacity of granular sludge.

[0004] However, compared with existing technologies and comparative solutions, it can be seen that this bioreactor still has the following problems in actual use:

[0005] In the process of treating wastewater, the sludge in the wastewater undergoes anaerobic reaction in the anaerobic zone at the bottom of the bioreactor, which produces biogas. The biogas bubbles produced rise and are discharged together with the bubbles produced by aeration. On the one hand, this causes energy waste, and on the other hand, the direct mixing of biogas with the aeration gas causes environmental pollution. Furthermore, since biogas is a flammable and explosive gas, its discharge along with the aeration gas poses certain safety hazards. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a wastewater treatment bioreactor.

[0007] The purpose of this utility model is achieved through the following technical solution: a wastewater treatment bioreactor, including a shell, a stirring assembly is provided at the top inside the shell, an aeration assembly and an air collection assembly are provided inside the shell, a sludge pump is fixedly installed on one side of the bottom of the shell, and a circulation assembly is fixedly connected to the output end of the sludge pump.

[0008] The gas collection assembly includes a first gas collection frame, a first gas supply pipe fixedly connected to the first gas collection frame, a through hole opened on the first gas supply pipe, a second gas collection frame provided on the top of the first gas collection frame, and a second gas supply pipe and a third gas supply pipe fixedly connected to the second gas collection frame.

[0009] The circulation assembly includes a three-way connector with a two-way regulating valve. The three-way connector has a flange connecting a sewage pipe and a circulation pipe. The end of the three-way connector away from the sewage pipe and the circulation pipe is fixedly connected to the output end of the sludge pump.

[0010] Preferably, an air outlet pipe is fixedly connected to the top of the outer casing, a first connecting pipe is fixedly connected to one side of the outer casing, the end of the circulation pipe away from the tee connector is fixedly connected to the first connecting pipe, a water outlet pipe is fixedly connected to the top of the outer casing away from the air outlet pipe, a water inlet pipe is fixedly connected to the bottom of the outer casing away from the air outlet pipe, a second connecting pipe, a connecting frame and a support leg are fixedly connected to the bottom of the outer casing, the sludge pump is fixedly installed on the connecting frame, and the second connecting pipe is fixedly connected to the input end of the sludge pump.

[0011] Preferably, the stirring assembly includes a driving component, which is fixedly mounted on the housing. The output end of the driving component is fixedly connected to a driving gear, which meshes with a driven gear. The driven gear meshes with a gear ring, which is fixedly connected to the top inside the housing. The bottom of the driven gear is fixedly connected to a connecting shaft, and a stirring rod is fixedly connected to the connecting shaft.

[0012] Preferably, the aeration component includes an air inlet pipe, which is fixedly connected to the outer shell. One end of the air inlet pipe is fixedly connected to an air distribution pipe, and an aeration head is provided on the air distribution pipe. The number of aeration heads is multiple and they are evenly distributed on the air distribution pipe.

[0013] Preferably, the horizontal height of the middle part of the first gas collecting frame is higher than the horizontal height of the two ends of the first gas collecting frame, the shape of the second gas collecting frame is the same as the shape of the first gas collecting frame, and the position of the through hole corresponds to the position of the second gas collecting frame.

[0014] Preferably, there are multiple first gas collection frames, and a first gas supply pipe is fixedly connected between adjacent first gas collection frames. There are also multiple second gas collection frames, which are distributed alternately with the multiple first gas collection frames, and a second gas supply pipe is fixedly connected between adjacent second gas collection frames.

[0015] Preferably, the third gas supply pipe flange is connected to the middle of the second gas supply pipe, and the end of the third gas supply pipe away from the second gas supply pipe is located on the outside of the top of the housing.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This wastewater treatment bioreactor improves the mixing effect between wastewater and aeration bubbles during use, thereby enhancing the aeration treatment effect. Furthermore, the biogas produced by the anaerobic reaction and the gas produced by the aeration treatment can be discharged separately. The biogas can be collected for subsequent use, avoiding the safety hazards caused by biogas being discharged along with the aeration gas, and also preventing pollution caused by direct discharge of biogas.

[0018] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 3 This is a cross-sectional structural diagram of the outer shell of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the stirring assembly of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the aeration component of this utility model;

[0025] Figure 6 This is a schematic diagram of the gas collection component of this utility model;

[0026] Figure 7 This is a cross-sectional view of the gas collection component of this utility model;

[0027] Figure 8 This utility model Figure 7 Enlarged structural diagram at point A;

[0028] Figure 9 This is a schematic diagram of the structure of the circulation component of this utility model.

[0029] In the diagram: 1. Outer shell; 101. Air outlet pipe; 102. First connecting pipe; 103. Water outlet pipe; 104. Water inlet pipe; 105. Second connecting pipe; 106. Connecting frame; 107. Support leg; 2. Mixing assembly; 201. Driving component; 202. Drive gear; 203. Driven gear; 204. Gear ring; 205. Connecting shaft; 206. Mixing rod; 3. Aeration assembly; 301. Air inlet pipe; 302. Air distribution pipe; 303. Aeration head; 4. Air collection assembly; 401. First air collection frame; 402. First air delivery pipe; 403. Through hole; 404. Second air collection frame; 405. Second air delivery pipe; 406. Third air delivery pipe; 5. Sludge pump; 6. Circulation assembly; 601. T-joint; 602. Two-way regulating valve; 603. Sewage discharge pipe; 604. Circulation pipe. Detailed Implementation

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, in part of which will be obvious from the description or may be learned by practice of the invention.

[0032] like Figures 1 to 2 As shown, a wastewater treatment bioreactor includes an outer shell 1. A stirring assembly 2 is arranged at the top inside the outer shell 1. An aeration assembly 3 and an air collection assembly 4 are arranged inside the outer shell 1. The air collection assembly 4 is located in the middle inside the outer shell 1, and the aeration assembly 3 is located above the air collection assembly 4. The interior of the outer shell 1 is divided into two parts by the air collection assembly 4. The area above the air collection assembly 4 is an aeration reaction area, and the area below the air collection assembly 4 is an anaerobic reaction area. A sludge pump 5 is fixedly installed on one side of the bottom of the outer shell 1, and a circulation assembly 6 is fixedly connected to the output end of the sludge pump 5.

[0033] like Figure 2 and Figure 3As shown, an air outlet pipe 101 is fixedly connected to the top of the outer casing 1, a first connecting pipe 102 is fixedly connected to one side of the outer casing 1, a water outlet pipe 103 is fixedly connected to the top of the outer casing 1 on the side away from the air outlet pipe 101, a water inlet pipe 104 is fixedly connected to the bottom of the outer casing 1 on the side away from the air outlet pipe 101, a second connecting pipe 105, a connecting frame 106 and a support leg 107 are fixedly connected to the bottom of the outer casing 1, and the sludge pump 5 is fixedly installed on the connecting frame 106, and the second connecting pipe 105 is fixedly connected to the input end of the sludge pump 5.

[0034] like Figure 2 and Figure 4 As shown, the stirring assembly 2 includes a driving component 201, a driving gear 202, a driven gear 203, a gear ring 204, a connecting shaft 205, and a stirring rod 206. The driving component 201 is fixedly mounted on the housing 1. The output end of the driving component 201 is fixedly connected to the driving gear 202. The driving gear 202 meshes with the driven gear 203. A support plate is fixedly connected to the bottom of the driving gear 202. The driven gear 203 is slidably connected to the support plate. The driven gear 203 meshes with the gear ring 204. The gear ring 204 is fixedly connected to the top inside the housing 1. The bottom of the driven gear 203 is fixedly connected to the connecting shaft 205. The stirring rod 206 is fixedly connected to the connecting shaft 205.

[0035] like Figure 2 and Figure 5 As shown, the aeration component 3 includes an air inlet pipe 301, an air distribution pipe 302, and an aeration head 303. The air inlet pipe 301 is fixedly connected to the outer shell 1. One end of the air inlet pipe 301 is fixedly connected to the air distribution pipe 302. An aeration head 303 is provided on the air distribution pipe 302. There are multiple aeration heads 303, which are evenly distributed on the air distribution pipe 302.

[0036] like Figure 2 , Figures 6 to 8As shown, the gas collection assembly 4 includes a first gas collection frame 401, a first gas delivery pipe 402, a through hole 403, a second gas collection frame 404, a second gas delivery pipe 405, and a third gas delivery pipe 406. The horizontal height of the middle part of the first gas collection frame 401 is higher than the horizontal height of both ends of the first gas collection frame 401. The first gas delivery pipe 402 is fixedly connected to the first gas collection frame 401. There are multiple first gas collection frames 401, which are linearly arrayed and their horizontal height gradually decreases from the middle to the sides. The first gas delivery pipe 402 is fixedly connected between adjacent first gas collection frames 401, and a through hole 403 is provided on the first gas delivery pipe 402. The top of the first gas collection frame 401... A second gas collecting frame 404 is provided, the shape of which is the same as that of the first gas collecting frame 401. The position of the through hole 403 corresponds to the position of the second gas collecting frame 404. A second gas supply pipe 405 and a third gas supply pipe 406 are fixedly connected to the second gas collecting frame 404. There are multiple second gas collecting frames 404, and multiple second gas collecting frames 404 and multiple first gas collecting frames 401 are distributed alternately. The second gas supply pipe 405 is fixedly connected between adjacent second gas collecting frames 404. The third gas supply pipe 406 is flanged and connected to the middle of the second gas supply pipe 405. The end of the third gas supply pipe 406 away from the second gas supply pipe 405 is located on the outside of the top of the outer casing 1.

[0037] like Figure 1 , Figure 2 and Figure 9 As shown, the circulation assembly 6 includes a three-way connector 601, a two-way regulating valve 602, a sewage pipe 603, and a circulation pipe 604. The two-way regulating valve 602 is installed on the three-way connector 601. The sewage pipe 603 and the circulation pipe 604 are connected to the flange on the three-way connector 601. The end of the three-way connector 601 away from the sewage pipe 603 and the circulation pipe 604 is fixedly connected to the output end of the sludge pump 5. The end of the circulation pipe 604 away from the three-way connector 601 is fixedly connected to the first connecting pipe 102.

[0038] The work process is as follows:

[0039] S1. When in use, the wastewater to be treated is added into the outer shell 1 through the inlet pipe 104. The sludge in the wastewater falls below the gas collection component 4 in the outer shell 1 due to gravity and is first treated by anaerobic reaction.

[0040] S2. The biogas bubbles produced by the anaerobic reaction rise due to buoyancy and are blocked and collected by the first gas collection frame 401 and the second gas collection frame 404. The biogas in the first gas collection frame 401 enters the second gas collection frame 404 through the through hole 403 along the first gas delivery pipe 402. The biogas in the second gas collection frame 404 is discharged from the third gas delivery pipe 406 along the second gas delivery pipe 405.

[0041] S3. Adjust the two-way regulating valve 602 to connect the circulation pipe 604 and the output end of the sludge pump 5. Start the sludge pump 5. The sludge pump 5 draws out sludge from the bottom of the outer shell 1 through the second connecting pipe 105. The sludge enters the outer shell 1 from the first connecting pipe 102 through the sludge pump 5, the three-way connector 601 and the circulation pipe 604.

[0042] S4. Compressed air enters the air distribution pipe 302 from the air inlet pipe 301, and then enters the aeration reaction zone above the air collection component 4 in the outer shell 1 from the aeration head 303 to carry out aeration reaction treatment on the sludge and sewage in the aeration reaction zone. The gas generated by the aeration treatment is discharged from the air outlet pipe 101.

[0043] S5. At the same time, the drive unit 201 is started. The drive unit 201 drives the driven gear 203 through the drive gear 202. The driven gear 203 drives the stirring rod 206 to rotate through the connecting shaft 205. This stirs the sewage and sludge in the aeration reaction zone above the gas collection component 4 in the outer shell 1, improves the mixing effect of sewage and aeration bubbles, and thus improves the aeration treatment effect.

[0044] S6. The biogas produced by the anaerobic reaction and the gas produced by the aeration treatment can be discharged separately. The biogas can be collected for subsequent use, avoiding the safety hazards caused by biogas being discharged together with the aeration gas, and also avoiding pollution caused by direct discharge of biogas.

[0045] S7. Untreated sludge slides back into the anaerobic reaction zone below the gas collection assembly 4 due to gravity from the gap between the second gas collection frame 404 and the first gas collection frame 401. The treated wastewater is discharged from the outlet pipe 103.

[0046] S8. When it is necessary to clean up the sludge that has not been completely treated, adjust the two-way regulating valve 602 to connect the sewage pipe 603 and the output end of the sludge pump 5. Start the sludge pump 5 to discharge the sludge at the bottom of the casing 1 from the sewage pipe 603.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A wastewater treatment bioreactor, characterized in that: Includes a shell (1), a stirring assembly (2) is provided at the top inside the shell (1), an aeration assembly (3) and an air collection assembly (4) are provided inside the shell (1), a sludge pump (5) is fixedly installed on one side of the bottom of the shell (1), and a circulation assembly (6) is fixedly connected to the output end of the sludge pump (5). The gas collection assembly (4) includes a first gas collection frame (401), a first gas supply pipe (402) is fixedly connected to the first gas collection frame (401), a through hole (403) is opened on the first gas supply pipe (402), a second gas collection frame (404) is provided on the top of the first gas collection frame (401), and a second gas supply pipe (405) and a third gas supply pipe (406) are fixedly connected to the second gas collection frame (404). The circulation assembly (6) includes a three-way connector (601), on which a two-way regulating valve (602) is provided. A drain pipe (603) and a circulation pipe (604) are connected to the flange on the three-way connector (601). One end of the three-way connector (601) away from the drain pipe (603) and the circulation pipe (604) is fixedly connected to the output end of the sludge pump (5).

2. The wastewater treatment bioreactor according to claim 1, characterized in that: An air outlet pipe (101) is fixedly connected to the top of the outer shell (1), a first connecting pipe (102) is fixedly connected to one side of the outer shell (1), the end of the circulation pipe (604) away from the three-way connector (601) is fixedly connected to the first connecting pipe (102), a water outlet pipe (103) is fixedly connected to the top of the side of the outer shell (1) away from the air outlet pipe (101), a water inlet pipe (104) is fixedly connected to the bottom of the side of the outer shell (1) away from the air outlet pipe (101), a second connecting pipe (105), a connecting frame (106) and a support leg (107) are fixedly connected to the bottom of the outer shell (1), the sludge pump (5) is fixedly installed on the connecting frame (106), and the second connecting pipe (105) is fixedly connected to the input end of the sludge pump (5).

3. A wastewater treatment bioreactor according to claim 1, characterized in that: The stirring assembly (2) includes a driving component (201), which is fixedly mounted on the outer shell (1). The output end of the driving component (201) is fixedly connected to a driving gear (202), which meshes with a driven gear (203). The driven gear (203) meshes with a gear ring (204), which is fixedly connected to the top inside the outer shell (1). The bottom of the driven gear (203) is fixedly connected to a connecting shaft (205), and a stirring rod (206) is fixedly connected to the connecting shaft (205).

4. A wastewater treatment bioreactor according to claim 1, characterized in that: The aeration assembly (3) includes an air inlet pipe (301), which is fixedly connected to the outer shell (1). One end of the air inlet pipe (301) is fixedly connected to an air distribution pipe (302), and an aeration head (303) is provided on the air distribution pipe (302). There are multiple aeration heads (303) evenly distributed on the air distribution pipe (302).

5. A wastewater treatment bioreactor according to claim 1, characterized in that: The horizontal height of the middle part of the first gas collecting frame (401) is higher than the horizontal height of both ends of the first gas collecting frame (401). The shape of the second gas collecting frame (404) is the same as that of the first gas collecting frame (401). The position of the through hole (403) corresponds to the position of the second gas collecting frame (404).

6. A wastewater treatment bioreactor according to claim 1, characterized in that: There are multiple first gas collection frames (401), and the first gas delivery pipe (402) is fixedly connected between adjacent first gas collection frames (401). There are multiple second gas collection frames (404), and the multiple second gas collection frames (404) are distributed alternately with the multiple first gas collection frames (401). The second gas delivery pipe (405) is fixedly connected between adjacent second gas collection frames (404).

7. A wastewater treatment bioreactor according to claim 1, characterized in that: The third gas pipe (406) is flanged and connected to the middle of the second gas pipe (405). The end of the third gas pipe (406) away from the second gas pipe (405) is located on the outside of the top of the housing (1).

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