A double-layer double-flow water distribution device and anaerobic reactor
By using a double-layer and double-flow water distribution device in the anaerobic reactor, the reflux liquid is mixed with wastewater and evenly distributed into the reactor, the problem that anaerobic reactors in the prior art is difficult to achieve uniform water distribution, which improves the treatment efficiency and effect and reduces costs.
Patent Information
- Application Number
- CN202421367748.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-14
AI Technical Summary
In the prior art, when anaerobic reactors treat high organic wastewater concentration and low flow rate, it is difficult to achieve uniform water distribution, resulting in severe sludge settlement, many dead zones for water distribution, and an increase in invalid volume, affecting the treatment effect and efficiency, and increasing the treatment cost.
A double-layer double-flow water distribution device is adopted, which includes a water distributor, a nozzle and a flange blind plate. The reflux liquid is mixed with the waste water through the water distributor, and the mixed liquid is evenly distributed into the anaerobic reactor through the inclined nozzle to avoid the formation of a dead zone for water distributing.
The uniform water distribution in the anaerobic reactor is achieved, the efficiency and effect of organic wastewater treatment is improved, equipment costs and operating energy consumption is reduced, and manpower and material consumption is reduced.
Smart Images
Figure CN222729600U_ABST
Abstract
Description
[Technical field]
[0001] The utility model belongs to the technical field of water distribution devices, and in particular relates to a double-layer double-flow water distribution device and an anaerobic reactor. [Background technology]
[0002] When treating organic wastewater, anaerobic microorganisms are usually used to adsorb and decompose organic matter in the wastewater. While completing the purification of organic wastewater, biogas can also be produced. This reaction is usually carried out in an anaerobic reactor. The more fully the mud and water in the anaerobic reactor are mixed, the more fully the anaerobic microorganisms adsorb and decompose organic matter, and the better the treatment effect of organic wastewater. Whether the mud and water can be fully mixed is related to whether the water distribution of the anaerobic reactor is uniform. At present, when treating organic wastewater, the organic wastewater concentration is high and the flow rate is small, while the anaerobic reactor has a large volume and bottom area, making it difficult to distribute water evenly, resulting in serious sludge sedimentation and more dead zones in the water distribution in the anaerobic reactor, and the increase of the invalid volume in the anaerobic reactor, thereby affecting the treatment effect and efficiency of organic wastewater.
[0003] In the prior art, an external water pump is usually installed in the anaerobic reactor to increase the water flow pressure and speed, and then a water distribution pipe is installed to ensure uniform water distribution, uniform mixing of mud and water, and reduce the dead zone of water distribution in the anaerobic reactor. However, this method requires a separate water pump, and the water pump needs to circulate, and the energy consumption of the overall equipment operation is high; secondly, the installation of a complex water distribution pipeline will also increase the risk of blockage of the water distribution pipe. Once the water distribution pipe is blocked, it needs to be shut down and emptied before it can be cleared and restored. The clearing process is complicated, which will also cause the treatment cost of the anaerobic reactor to increase; in addition, the installation of a complex water distribution pipeline and an external water pump will further increase the size of the equipment, and the water distribution pipeline also needs to be separately provided with a cold-proof insulation layer, which will further increase the equipment cost and increase the overall treatment cost of organic wastewater. [Utility Model Content]
[0004] The utility model provides a double-layer double-flow water distributor to solve the technical problems of poor wastewater treatment effect, low treatment efficiency and high treatment cost caused by uneven water distribution in the prior art. The utility model also provides an anaerobic reactor. The utility model provides a double-layer double-flow water distributor.
[0005] The technical solution of a double-layer double-flow water distribution device provided by the utility model is:
[0006] A double-layer double-flow water distribution device, the water distribution device includes a water distributor, the water distributor includes a water distributor bottom plate, a water distributor side wall and a water distributor head, a wastewater inlet pipe is provided near the bottom of the water distributor side wall, a reflux liquid outlet pipe is provided on the top of the water distributor head, the top of the reflux outlet pipe is used to connect the reflux pipe, at least two layers of nozzles are provided on the water distributor side wall, the nozzles are arranged above the wastewater inlet pipe, the nozzles are arranged downwardly inclined, and the nozzles of adjacent two layers are staggered, and a flange blind plate is provided at the bottom of the water distributor, and the flange blind plate is used to fix the water distributor on the bottom plate of the anaerobic reactor.
[0007] Furthermore, a flange blind plate is provided at the bottom of the water separator, and the flange blind plate is used to fix the water separator on the bottom plate of the anaerobic reactor.
[0008] Furthermore, the water distributor is a cylindrical barrel structure.
[0009] Furthermore, the nozzles are provided with two layers, namely, an upper layer of nozzles and a lower layer of nozzles, and the number of the upper layer of nozzles and the number of the lower layer of nozzles are the same, both of which are provided with 4 to 6.
[0010] Furthermore, the downward inclination angle of the nozzle ranges from 25° to 30°, and the length of the nozzle ranges from 200 to 250 mm.
[0011] Furthermore, the angle between the projections of the upper nozzle and the lower nozzle in the horizontal direction ranges from 30° to 45°.
[0012] Furthermore, the water distributor, the flange blind plate, the nozzle, the wastewater inlet pipe and the reflux liquid outlet pipe are all made of 304 stainless steel.
[0013] The beneficial effects are:
[0014] 1. When the water distribution device is working, the reflux liquid enters the water distributor vertically downward from the reflux liquid outlet pipe, and the wastewater enters the water distributor from the wastewater inlet pipe in a tangential direction and forms a swirling upward flow. The large-flow reflux liquid offsets the small-flow wastewater. The reflux liquid and the wastewater are fully mixed in the water distributor, and then discharged from the nozzles at different heights around the water distributor into the anaerobic reactor, so that the mixed liquid is distributed to different positions in the anaerobic reactor, avoiding the dead zone of water distribution caused by the large volume and bottom area of the anaerobic reactor, and realizing the uniform water distribution of the wastewater in the anaerobic reactor. The mixed liquid flowing out of the nozzle has a good flow state and a large spraying area, which is conducive to the formation of anaerobic sludge particles and helps to improve the treatment efficiency of the anaerobic reactor.
[0015] 2. The water distribution device has a simple structure and does not need to set up a separate water distribution pipeline. The flow channel is wide and not easy to be blocked. There is no need to frequently shut down for emptying, clearing and recovery work, which reduces the consumption of manpower and material resources, saves time and reduces equipment costs.
[0016] 3. After the water distribution device fixes the flange blind plate to the bottom plate of the anaerobic reactor through bolts, the installation of the equipment can be completed. The overall installation is convenient and simple, saving time.
[0017] 4. The water distributor, flange blind plate, nozzle, wastewater inlet pipe and reflux liquid outlet pipe are all made of 304 stainless steel, and the equipment has good corrosion resistance and long service life.
[0018] The technical solution of the anaerobic reactor provided by the utility model is:
[0019] An anaerobic reactor is provided with a water distribution device installed on the bottom plate of the anaerobic reactor. The water distribution device includes a water distributor. The water distributor is a cylindrical barrel structure. A wastewater inlet pipe is provided on the side wall of the water distributor near the bottom. A reflux liquid outlet pipe is provided on the top of the water distributor head. The top of the reflux outlet pipe is used to connect the reflux pipe. At least two layers of nozzles are also provided on the side wall of the water distributor. The nozzles are arranged above the wastewater inlet pipe. The nozzles are arranged downwardly tilted. The nozzles of two adjacent layers are arranged in a staggered manner. A flange blind plate is provided at the bottom of the water distributor. The flange blind plate is used to fix the water distributor on the bottom plate of the anaerobic reactor.
[0020] Furthermore, a flange blind plate is provided at the bottom of the water separator, and the flange blind plate is used to fix the water separator on the bottom plate of the anaerobic reactor.
[0021] Furthermore, the nozzles are provided with two layers, namely, an upper layer of nozzles and a lower layer of nozzles, and the number of the upper layer of nozzles and the number of the lower layer of nozzles are the same, both of which are provided with 4 to 6.
[0022] Furthermore, the downward inclination angle of the nozzle ranges from 25° to 30°, and the length of the nozzle ranges from 200 to 250 mm.
[0023] Furthermore, the angle between the projections of the upper nozzle and the lower nozzle in the horizontal direction ranges from 30° to 45°.
[0024] Furthermore, the water distributor, the flange blind plate, the nozzle, the wastewater inlet pipe and the reflux liquid outlet pipe are all made of 304 stainless steel.
[0025] The beneficial effects are:
[0026] 1. When the water distribution device is working, the reflux liquid enters the water distributor vertically downward from the reflux liquid outlet pipe, and the wastewater enters the water distributor from the wastewater inlet pipe in a tangential direction and forms a swirling upward flow. The large-flow reflux liquid offsets the small-flow wastewater. The reflux liquid and the wastewater are fully mixed in the water distributor, and then discharged from the nozzles at different heights around the water distributor into the anaerobic reactor, so that the mixed liquid is distributed to different positions in the anaerobic reactor, avoiding the dead zone of water distribution caused by the large volume and bottom area of the anaerobic reactor, and realizing the uniform water distribution of the wastewater in the anaerobic reactor. The mixed liquid flowing out of the nozzle has a good flow state and a large spraying area, which is conducive to the formation of anaerobic sludge particles and helps to improve the treatment efficiency of the anaerobic reactor.
[0027] 2. The water distribution device has a simple structure and does not need to set up a separate water distribution pipeline. The flow channel is wide and not easy to be blocked. There is no need to frequently shut down for emptying, clearing and recovery work, which reduces the consumption of manpower and material resources, saves time and reduces equipment costs.
[0028] 3. After the water distribution device fixes the flange blind plate to the bottom plate of the anaerobic reactor through bolts, the installation of the equipment can be completed. The overall installation is convenient and simple, saving time.
[0029] 4. The water distributor, flange blind plate, nozzle, wastewater inlet pipe and reflux liquid outlet pipe are all made of 304 stainless steel. The equipment has good corrosion resistance and long service life.
Brief Description of the Drawings
[0030] Figure 1 It is a schematic diagram of the top view of the double-layer double-flow water distribution device of Example 1 provided by the utility model;
[0031] Figure 2 It is a schematic cross-sectional view of the double-layer double-flow water distribution device of Example 1 provided by the utility model;
[0032] 1. Wastewater inlet pipe; 2. Water distributor; 2-1. Upper nozzle; 2-2. Lower nozzle; 2-3. Water distributor head; 2-4. Reflux liquid outlet pipe; 2-5. Blind flange plate. [Specific implementation method]
[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings.
[0034] Specific embodiment 1 of a double-layer double-flow water distribution device provided by the utility model:
[0035] This embodiment provides a double-layer double-flow water distribution device, such as Figure 1 and Figure 2As shown, the water distribution device includes a water distributor, which includes a water distributor bottom plate, a water distributor side wall and a water distributor head. A flange blind plate is provided on the water distributor bottom plate, and the flange blind plate is used to fix the water distributor on the anaerobic reactor bottom plate. A wastewater inlet pipe is provided near the bottom of the water distributor side wall. A reflux liquid outlet pipe is provided on the top of the water distributor head, and a flange is provided on the top of the reflux outlet pipe, and the flange is used to connect the reflux pipe. Figure 1 , Figure 2 As shown, the water divider as a whole is a cylindrical barrel structure. The reflux liquid outlet pipe and the water divider are coaxially arranged. The wastewater inlet pipe is welded and fixed along the tangent direction of the side of the water divider. The flange blind plate is fixed to the bottom plate of the anaerobic reactor by bolts. A nozzle is also provided on the side wall of the water divider. The nozzle is arranged above the wastewater inlet pipe. The nozzle length ranges from 200 to 250 mm. The nozzle is tilted downward, and the inclination angle ranges from 25° to 30°. The nozzle is provided with two layers, namely the upper nozzle and the lower nozzle. The number of the upper nozzle and the lower nozzle is the same, both of which are set to 4 to 6. The upper nozzle and the lower nozzle are staggered. The angle between the upper nozzle and the lower nozzle in the horizontal direction ranges from 30° to 45°. The nozzle outlet flow rate is 0.5 to 1.0 m / s. As shown Figure 1 As shown, in this embodiment, 6 upper nozzles and 6 lower nozzles are provided, which are evenly spaced on the side wall of the water divider. The angle between the upper nozzles and the lower nozzles in the horizontal direction is 30°, the nozzle length is 250mm, and the downward tilt angle of the nozzle is 30°.
[0036] In this embodiment, the water divider, the blind flange, the nozzle, the wastewater inlet pipe and the reflux liquid outlet pipe are all made of 304 stainless steel. In other embodiments, the water divider, the blind flange, the nozzle, the wastewater inlet pipe and the reflux liquid outlet pipe can also be made of glass fiber reinforced plastics.
[0037] When the water distribution device is working, the treated organic wastewater enters the water distributor from the reflux liquid outlet pipe to be mixed with the untreated organic wastewater. In this embodiment, the normal flow of the reflux liquid is ensured by a low-speed submersible reflux device. Usually, the reflux liquid flow rate is greater than or equal to the wastewater flow rate. Generally, the flow rate ratio of wastewater to reflux liquid is 1:1-10, and the residual pressure of the wastewater entering the water distributor is 0.5-1 meter higher than the reflux liquid pressure. The reflux liquid enters the water distributor vertically downward from the reflux liquid outlet pipe, and the wastewater enters the water distributor from the wastewater inlet pipe. The pipe enters the water distributor in a tangential direction and forms a swirling upward flow. The large-flow reflux liquid offsets the small-flow wastewater. The reflux liquid and the wastewater are fully mixed in the water distributor and then discharged from the surrounding upper and lower nozzles into the anaerobic reactor. Due to the different heights and pressures of the upper and lower nozzles, the mixed liquid flow can be distributed to different positions in the anaerobic reactor, avoiding the dead zone of water distribution due to the large volume and bottom area of the anaerobic reactor, and realizing uniform water distribution of the wastewater in the anaerobic reactor.
[0038] Specific embodiment 2 of a double-layer double-flow water distribution device provided by the utility model:
[0039] The only difference between this embodiment and Embodiment 1 is that the nozzles are arranged in three layers. In other embodiments, the nozzles may also be arranged in four layers, five layers or more layers. The specific number of nozzle layers is determined according to the size of the anaerobic reactor and the size of the water distribution device.
Claims
1. A double-layer double-flow water distribution device, characterized in that: The water distribution device includes a water distributor, which includes a water distributor bottom plate, a water distributor side wall and a water distributor head. A wastewater inlet pipe is provided near the bottom of the water distributor side wall, a reflux liquid outlet pipe is provided on the top of the water distributor head, and the top of the reflux outlet pipe is used to connect the reflux pipe. At least two layers of nozzles are also provided on the water distributor side wall. The nozzles are arranged above the wastewater inlet pipe, the nozzles are arranged downwardly, and the nozzles of adjacent two layers are arranged alternately. A flange blind plate is provided at the bottom of the water distributor, and the flange blind plate is used to fix the water distributor on the bottom plate of the anaerobic reactor.
2. The double-layer double-flow water distribution device according to claim 1 is characterized in that: A blind flange plate is arranged on the bottom plate of the water separator, and the blind flange plate is used to fix the water separator on the bottom plate of the anaerobic reactor.
3. The double-layer double-flow water distribution device according to claim 1 is characterized in that: The water distributor is a cylindrical barrel structure.
4. The double-layer double-flow water distribution device according to any one of claims 1 to 3, characterized in that: The nozzles are arranged in two layers, namely, an upper layer of nozzles and a lower layer of nozzles. The number of the upper layer of nozzles and the number of the lower layer of nozzles are the same, both of which are arranged in 4 to 6 layers.
5. The double-layer double-flow water distribution device according to claim 4 is characterized in that: The downward inclination angle of the nozzle ranges from 25° to 30°, and the length of the nozzle ranges from 200 to 250 mm.
6. The double-layer double-flow water distribution device according to claim 5 is characterized in that: The angle between the horizontal projections of the upper nozzle and the lower nozzle ranges from 30° to 45°.
7. The double-layer double-flow water distribution device according to claim 1 is characterized in that: The water distributor, flange blind plate, nozzle, wastewater inlet pipe and reflux liquid outlet pipe are all made of 304 stainless steel.
8. An anaerobic reactor, characterized in that: A water distribution device is installed on the bottom plate of the anaerobic reactor, and the water distribution device is a double-layer double-flow water distribution device as described in any one of claims 1-7.