Partitioned sewage treatment device

Abstract

The invention discloses a partitioned sewage treatment device, and belongs to the field of sewage treatment. The partitioned sewage treatment device comprises a reaction region, a gas collection region, a separation region, a partition plate and a water conveying pipe, the gas collection area is communicated with the reaction area to collect gas generated in the reaction area, the separation area is separated from the reaction area and the gas collection area through the partition plate, the reaction area transfers mud-water mixed liquid to the separation area through the water conveying pipe, the separation area comprises a separation area and a gas channel, and the gas channel is communicated with the separation area. The separation area is located at the bottom of the separation area, and the gas channel is communicated with the separation area and the gas collection area. According to the partitioned sewage treatment device, biogas in each partition can be uniformly and directly discharged into the gas space of the gas collection region, so that the interference of the biogas on the mud-water separation process in the separation region is reduced, and the escape efficiency of the biogas in the separation region is improved.

Description

Technical Field

[0001] The invention belongs to the field of sewage treatment, and in particular relates to a partitioned sewage treatment device. Background Art

[0002] The beer industry produces high carbon dioxide and methane emissions in the fermentation, packaging and other process and wastewater treatment links. In the treatment of beer wastewater, firstly, it is necessary to adopt advanced wastewater treatment technology with small footprint, low operating energy consumption and low drug consumption; secondly, it is necessary to fully realize wastewater resource utilization, reduce the overall energy consumption and carbon emissions of the brewery through energy recovery, and maximize economic and environmental benefits.

[0003] Anaerobic process is the key link in the treatment of brewery wastewater. Currently, the commonly used anaerobic processes mainly include upflow anaerobic sludge reactor (UASB), fully mixed biogas internal circulation anaerobic tank, and IC anaerobic reactor. The structure of anaerobic three-phase separator is diverse, but the basic components include sludge bed, sludge suspension layer, sedimentation zone and three-phase separator body.

[0004] The three-phase separator is the core component of the anaerobic reactor. It directly affects the separation effect of gas, liquid and solid in the reactor and can be used for high-concentration wastewater treatment projects, such as aquaculture wastewater, slaughter wastewater, pharmaceutical wastewater, chemical wastewater, food wastewater and other high-concentration organic wastewater. Among them, the three-phase separator body is usually composed of a gas collecting chamber, a sedimentation area and a reflux seam. The gas collecting chamber is located at the top and is used to collect biogas; the sedimentation area is used to precipitate the solid particles rising with the water flow and slide down along the inclined wall back to the reaction area; the reflux seam is responsible for the reflux of sludge.

[0005] Traditional anaerobic reactors are basically fully mixed integrated reactors. The reaction zone and the three-phase separator are in the same space, and their positional relationship is up and down. The three-phase separator is located above the reaction zone. The three-phase separator is limited by the narrow slit flow rate, and the mud-water separation effect is easily affected by gas production and rising flow rate, which can easily lead to sludge loss.

[0006] In actual operation, the traditional three-phase separator still has some defects that need to be improved. Summary of the invention

[0007] The present invention provides a zoned sewage treatment device, which can discharge the biogas of each zone directly into the gas space of the gas collection area, reduce the interference of biogas on the mud-water separation process in the sorting area, and improve the escape efficiency of biogas in the sorting area.

[0008] In order to achieve the above object, the present invention adopts the following technical scheme:

[0009] The present invention provides a partitioned sewage treatment device, comprising a reaction zone, a gas collection zone, a separation zone, a partition plate and a water delivery pipe;

[0010] The gas collection zone is connected to the reaction zone to collect the gas generated in the reaction zone. The separation zone is separated from the reaction zone and the gas collection zone by the partition. The reaction zone transfers the mud-water mixture to the separation zone through the water pipe. The separation zone includes a separation zone and a gas channel. The separation zone is located at the bottom of the separation zone. The gas channel connects the separation zone and the gas collection zone.

[0011] In some embodiments, the separation zone further includes a sedimentation zone, which is located above the separation zone. The sedimentation zone is connected to the reaction zone through the water pipe, and the sludge separated from the sedimentation zone slides into the separation zone.

[0012] Furthermore, a gas gap is formed on the partition between the precipitation zone and the gas collection zone, and the gas generated in the precipitation zone enters the gas collection zone through the gas gap.

[0013] In some embodiments, the separation zone and the gas collection zone are separated by a partition, and a gap is formed between an inner wall of the partition and the separation zone, and the gap includes the gas channel.

[0014] Preferably, the partitioned sewage treatment device comprises an air guide plate, a gap passage is formed between the inner wall of the air guide plate and the inner wall of the partition plate, and the gap passage is connected to the gas channel.

[0015] Furthermore, the sedimentation zone includes an inclined tube filler, the separation zone includes a baffle, the inclined tube filler is arranged above the baffle, one end of the baffle surrounds the inclined tube filler, and the other end of the baffle is funnel-shaped to collect sediment sludge.

[0016] Furthermore, a backwash pipe is installed below the inclined tube packing, and the backwash pipe is used to clean the inclined tube packing.

[0017] In some embodiments, a gas stripping reflux pipe is provided in the separation zone, and the gas reflux pipe connects the separation zone and the reaction zone to transfer the sludge in the separation zone to the reaction zone.

[0018] In some embodiments, the tank body further comprises a tank body, wherein an open area is formed at the upper portion of the tank body, and an observation hole is formed at the top of the tank body.

[0019] Furthermore, a sealing cover is movably installed outside the observation hole.

[0020] The beneficial effects of the present invention compared with the prior art are:

[0021] A partitioned sewage treatment device proposed in the present invention can disassemble the traditional three-phase integrated separator into a gas collection area for collecting biogas, a reaction area for treating sewage and a sorting area for separating mud and water. The sewage treatment device is divided into several independent partitions by partitions. The biogas of each partition is uniformly and directly discharged into the gas space of the gas collection area to complete separation and collection, so that biogas is collected at the front end to the greatest extent, reducing the interference of biogas on the mud and water separation process in the sorting area.

[0022] The present invention proposes a zoned sewage treatment device, in which a gas channel is arranged in a sorting zone. The gas channel connects the separation zone and the gas collecting zone at the bottom of the sorting zone, provides a discharge path for the bottom gas, improves the escape efficiency of biogas in the sorting zone, and at the same time prevents the biogas from interfering with the sludge settled in the sorting zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0024] Figure 1 A partial structural cross-sectional view of a zoned sewage treatment device provided by an embodiment of the present invention;

[0025] Figure 2 A cross-sectional view of the overall structure of a zoned sewage treatment device provided by an embodiment of the present invention;

[0026] Figure 3 A partial structural cross-sectional view from another direction of the partitioned sewage treatment device provided by an embodiment of the present invention.

[0027] The reference numerals in the figures are:

[0028] 1. Reaction zone; 11. First reaction tank; 12. Second reaction tank;

[0029] 2. Sorting area;

[0030] 21. Separation zone; 211. Mud slide;

[0031] 22. Gas channel;

[0032] 23. Sedimentation zone; 231. Inclined tube packing; 232. Backwashing pipe; 233. First sedimentation zone; 234. Second sedimentation zone;

[0033] 24. Gas lift reflux pipe; 241. Gas lift reflux main pipe;

[0034] 3. Gas gathering area; 31. First gas gathering area; 32. Second gas gathering area;

[0035] 4. Partition;

[0036] 5. air guide plate; 51. gap passage;

[0037] 6. Tank body; 61. Open area; 62. Sealing plate; 63. Observation hole; 64. Sealing cover;

[0038] 7. Aeration and stirring pipe;

[0039] 8. Sampling port; 81. Water outlet weir;

[0040] 9. Sludge. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without carrying out creative work are within the scope of protection of this application.

[0042] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0043] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0044] In the description of the present application, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present application.

[0045] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In view of the following description, these and other features of the present specification, as well as the operation and function of the related elements of the structure, and the economy of the combination and manufacture of the parts can be significantly improved. Reference is made to the accompanying drawings, all of which form a part of this specification. However, it should be clearly understood that the drawings are for illustration and description purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0047] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0048] The traditional anaerobic reactor is basically a fully mixed integrated reactor. The reaction zone and the three-phase separator are in the same space, and the position relationship is up and down. The three-phase separator is located above the reaction zone. The three-phase separator is limited by the narrow slit flow rate. The mud-water separation effect is easily disturbed by gas production and rising flow rate, which can easily lead to sludge loss. The design of the anaerobic three-phase separator is a complex process that requires comprehensive consideration of multiple factors. In practical applications, flexible adjustments and optimized designs should be made according to specific circumstances to achieve the best treatment effect and operational stability. At the same time, regular maintenance and overhaul are also important measures to ensure the normal operation of the three-phase separator.

[0049] Traditional three-phase separators still have some defects in actual operation: over time, sediment may accumulate inside the separator, causing fouling and blockage; if the gas flow rate is too fast, liquid may be brought into the gas outlet; the gas flow rate affects the sedimentation of sludge and the clarification and separation of liquid; solid particles may not be effectively settled due to improper design of the sedimentation zone; and corrosion of the separator will also seriously affect its service life.

[0050] The partitioned sewage treatment device proposed in the present invention can discharge the biogas of each partition directly into the gas space of the gas collection area 3, reduce the interference of biogas on the mud-water separation process in the sorting area 2, and improve the escape efficiency of biogas in the sorting area 2.

[0051] In order to achieve the above effects, two reaction zones are used as an example. Figure 1 to Figure 3As shown, the present invention provides a partitioned sewage treatment device, including a reaction zone 1, a gas collection zone 3, a separation zone 2, a partition 4 and a water pipe, the gas collection zone 3 is connected to the reaction zone 1, the separation zone 2 is separated from the reaction zone 1 and the gas collection zone 3 by the partition 4, the reaction zone 1 transfers the mud-water mixture to the separation zone 2 through the water pipe, the separation zone 2 includes a separation zone 21 and a gas channel 22, the separation zone 21 is located at the bottom of the separation zone 2, and the gas channel 22 connects the separation zone 21 and the gas collection zone 3.

[0052] A partitioned sewage treatment device proposed in the present invention can disassemble the traditional three-phase integrated separator into a gas collection area 3 for collecting biogas, a reaction area 1 for treating sewage and a separation area 2 for separating mud and water. The sewage treatment device is divided into several independent partitions by a partition 4. The biogas of each partition is directly discharged into the gas space of the gas collection area 3 to complete separation and collection. Biogas collection is performed at the front end to the greatest extent, thereby reducing the interference of biogas on the mud and water separation process in the separation area 2.

[0053] The present invention proposes a zoned sewage treatment device, in which a gas channel 22 is arranged in the sorting zone 2. The gas channel connects the separation zone and the gas collecting zone at the bottom of the sorting zone, provides a discharge path for the bottom gas, improves the escape efficiency of biogas in the sorting zone, and at the same time prevents the biogas from interfering with the sludge settled in the sorting zone.

[0054] It should be noted that the gas channel 22 is used to guide the biogas generated by the deposited sludge 9 at the bottom of the gas collecting area 3 to the gas collecting area 3, so as to prevent the biogas generated at the bottom from affecting the settling sludge 9. Therefore, the gas channel 22 can have various forms. For example, a connecting pipe is set to help the biogas to be quickly discharged. For example, in another embodiment, a groove and a waterproof plate can be opened on the partition 4, and the rapid discharge of biogas can be achieved through the passage formed by the waterproof plate and the groove.

[0055] It should also be noted that the above embodiments are described by taking an example in which a sorting area 2 is provided with two reaction areas 1, namely a first reaction pool 11 and a second reaction pool 12. In other implementations, a sorting area 2 can also be provided with one reaction area 1, three reaction areas 1, or four reaction areas 1. For example, a reaction area 1 can also be provided with two sorting areas 2, three sorting areas 2, and so on. Accordingly, the gas collection area 3 and the partition 4 can be adaptively adjusted to achieve the coordinated operation of multiple sorting areas 2 and multiple reaction areas 1. Similarly, the above embodiments are described by taking an example in which the gas collection area 3 includes a first gas collection area 31 and a second gas collection area 32. In other embodiments, the number of gas collection areas 3 can also be changed. Similarly, similarly, the above embodiments are described by taking an example in which the precipitation area 23 includes a first precipitation area 233 and a second precipitation area 234. In other embodiments, the number of precipitation areas 23 can also be changed.

[0056] In order to construct a graded sedimentation system, the sorting zone 2 also includes a sedimentation zone 23, which is located above the separation zone 21. The sedimentation zone 23 is connected to the reaction zone 1 through the water pipe. The sludge 9 separated from the sedimentation zone 23 slides to the separation zone 21, and the mud-water mixture is now settled in the sedimentation zone 23 to achieve preliminary solid-liquid separation. During the natural sedimentation process of the reaction zone 1, the amount of mud in the liquid is greatly reduced, thereby improving the sedimentation efficiency and ensuring the stable operation of the sludge treatment device.

[0057] In order to improve the emission efficiency and emission amount of biogas, an air gap is formed on the partition 4 between the sedimentation area 23 and the gas collecting area 3. The biogas generated in the sedimentation area 23 is collected into the gas collecting area 3 through the air gap. There are two biogas channels, the upper and bottom channels, in the sorting area 2, which significantly improves the escape efficiency of biogas.

[0058] There are many ways to provide a gas channel in the separation zone 21, such as providing a connecting pipe to help quickly discharge the biogas. For example, in another embodiment, a groove and a waterproof plate can be provided on the partition 4 to quickly discharge the biogas through the passage formed by the waterproof plate and the groove. For example, Figure 1 As shown, the separation zone 21 is separated from the gas collection zone 3 by a partition 4, and a gap is formed between the inner wall of the partition 4 and the separation zone 21, and the gap includes the gas channel 22. The gas channel 22 is arranged on the inner wall of the partition 4, which has a simple structure and saves manufacturing costs.

[0059] The structure of the gas channel 22 can also be as follows: Figure 2The air guide plate 5 shown is implemented such that a gap passage 51 is formed between the inner wall of the air guide plate 5 and the inner wall of the partition 4, and the gap passage 51 is connected to the gas channel 22. The gap passage 51 is formed between the air guide plate 5 and the inner wall of the partition 4, thereby constructing a specific route for the gas flow and realizing the directionality of biogas escape.

[0060] Furthermore, in order to improve the mud-water separation efficiency of the sedimentation area 23, an inclined tube filler 231 is provided in the sedimentation area 23, and a mud slide plate 211 is provided in the separation area 21. The inclined tube filler 231 is provided above the mud slide plate 211. In this embodiment, in order to save space, the air guide plate 5 and the mud slide plate 211 are combined to form a baffle, and the mud slide plate 211 is provided between the air guide plate 5 and the inclined tube filler 231. One end of the baffle embraces the inclined tube filler 231, and the other end of the baffle is funnel-shaped to collect the precipitated sludge 9. The sludge 9 in the mud-water mixture improves the separation efficiency through the inclined tube filler 2331 and slides to the mud slide plate 211 and the air guide plate 5. The settled sludge 9 is still kept in a fully mixed state through the biogas. The high solid interception mud-water separation device composed of the inclined tube filler 231, the air guide plate 5 and the mud sliding plate 211 is not limited by the narrow slit flow rate of the traditional anaerobic reactor, has a high surface hydraulic load, and greatly improves the mud-water separation efficiency.

[0061] In order to prevent the inclined tube from being blocked by sludge, a backwash pipe 232 is installed below the inclined tube filler 231. The backwash pipe 232 is used to clean the inclined tube filler 231. A backwash system can be set to regularly clean the inclined tube filler 231 through the backwash pipe 232 to ensure the mud-water separation effect.

[0062] In order to fully realize the resource utilization of wastewater, a gas lift reflux pipe 24 is provided in the separation zone 2, and the gas reflux pipe connects the separation zone 21 and the reaction zone 1 to transfer the sludge 9 in the separation zone 21 to the reaction zone 1, so that the microorganisms in the sludge 9 can continue to participate in the decomposition of pollutants and maintain a sufficient microbial concentration in the reaction system. When there are multiple reaction zones 1, a gas lift reflux main pipe 241 merging multiple gas lift reflux pipes 24 is provided on the upper part of the separation zone 1, so as to facilitate the reflux of multiple reaction zones 1.

[0063] The sludge 9 flows back to the reaction zone 1 through the air lift reflux pipe 24 , and the supernatant continues to pass upward through the inclined tube filler 231 and is collected at the outlet weir 81 above the inclined tube filler 231 for discharge.

[0064] In order to realize the visualization of the whole processing device, each reaction area is placed in a tank body 6, an open area 61 is opened on the upper part of the tank body 6, an observation hole 63 is opened on the top of the tank body 6, and a sealing plate 62 is provided in the open area 61 to keep the observation hole 63 in an open state, so as to monitor the reaction conditions in the reaction tank in real time.

[0065] When the mud-water separation device needs to be repaired or the inclined tube filler 231 needs to be replaced, it is only necessary to lower the liquid level appropriately and take it out through the observation hole 63 for replacement. The inclined tube filler can be replaced online without cleaning the tank or stopping production, and the operation is convenient.

[0066] When it is necessary to provide an anaerobic environment in the tank, the sealing cover 64 movably installed outside the observation hole 63 is used to seal the entire reaction tank to provide an anaerobic environment. Aeration stirring pipes are provided at the bottom of the reaction zone 1 and the separation zone 21. The aeration stirring pipes continuously inject air into the sewage to increase the content of dissolved oxygen in the water body and accelerate the decomposition and transformation of pollutants. A sampling port 8 is provided outside the tank body to detect the dynamic changes of chemical oxygen demand (COD), biochemical oxygen demand (BOD), ammonia nitrogen, suspended solids, etc., so as to facilitate real-time control of water quality changes.

[0067] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A zoned sewage treatment device, characterized in that: It includes reaction area, gas collection area, separation area, baffles and water pipes; The gas collection zone is connected to the reaction zone to collect the gas generated in the reaction zone. The separation zone is separated from the reaction zone and the gas collection zone by the partition. The reaction zone transfers the mud-water mixture to the separation zone through the water pipe. The separation zone includes a separation zone and a gas channel. The separation zone is located at the bottom of the separation zone. The gas channel connects the separation zone and the gas collection zone.

2. The zoned sewage treatment device according to claim 1, characterized in that: The separation zone also includes a sedimentation zone, which is located above the separation zone. The sedimentation zone is connected to the reaction zone through the water pipe, and the sludge separated from the sedimentation zone slides down to the separation zone.

3. The zoned sewage treatment device according to claim 2, characterized in that: A gas gap is formed on the partition between the precipitation zone and the gas collection zone, and the gas generated in the precipitation zone enters the gas collection zone through the gas gap.

4. The zoned sewage treatment device according to claim 1, characterized in that: The separation zone is separated from the gas collection zone by a partition plate, a gap is formed between the inner wall of the partition plate and the separation zone, and the gap includes the gas channel.

5. The zoned sewage treatment device according to claim 4 is characterized in that: The partitioned sewage treatment device comprises an air guide plate, a gap passage is formed between the inner wall of the air guide plate and the inner wall of the partition plate, and the gap passage is communicated with the gas channel.

6. The zoned sewage treatment device according to claim 2, characterized in that: The sedimentation zone includes an inclined tube filler, and the separation zone includes a baffle. The inclined tube filler is arranged above the baffle. One end of the baffle surrounds the inclined tube filler, and the other end of the baffle is funnel-shaped to collect sediment sludge.

7. The zoned sewage treatment device according to claim 6, characterized in that: A backwash pipe is installed below the inclined tube packing, and the backwash pipe is used to clean the inclined tube packing.

8. The zoned sewage treatment device according to claim 1, characterized in that: A gas stripping reflux pipe is provided in the separation zone, and the gas reflux pipe is connected with the separation zone and the reaction zone to transfer the sludge in the separation zone to the reaction zone.

9. The zoned sewage treatment device according to claim 1, characterized in that: The invention also comprises a tank body, wherein an open area is provided at the upper part of the tank body, and an observation hole is provided at the top end of the tank body.

10. The zoned sewage treatment device according to claim 9, characterized in that: A sealing cover is movably installed outside the observation hole.

Images