Anti-blocking water distribution spray head and water distributor for sewage treatment

Abstract

The utility model discloses an anti-blocking water distribution spray head and a water distributor for sewage treatment, and relates to the technical field of water distributors. The bottom of the flow guide groove and the top of the longitudinal water conveying pipeline are fixedly arranged or limited; the input end of the connecting sleeve is fixedly connected to the bottom of the longitudinal water conveying pipeline, and the connecting sleeve is provided with at least two output ends; the transverse water distribution pipeline is fixedly connected to any output end of the connecting sleeve; the water distribution branch pipes are arranged on the surface of the transverse water distribution pipeline in parallel along the water flow direction; the water distribution nozzles are fixedly mounted on the upper surfaces of the water distribution branch pipes and are arranged from sparse to dense along the water flow direction; each water distribution spray head comprises a water outlet part and a water retaining part, sewage is distributed to the transverse water distribution pipelines through the connecting sleeves and then conveyed to the spray heads through the water distribution branch pipes, and a multi-layer water distribution network is formed; the water distribution nozzles are arranged from sparse to dense along the water flow direction, and the distribution of the transverse water distribution pipelines and the water distribution branch pipes is combined, so that sewage is uniformly diffused at the bottom of the reaction tank, and the treatment efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of water distributor technology, specifically relating to an anti-clogging water distributor nozzle and a water distributor for sewage treatment. Background Technology

[0002] In wastewater treatment, wastewater needs to be evenly introduced into the biological reactor to ensure treatment effectiveness. The water distribution device is an important component of the biological reactor.

[0003] Traditional water distribution devices include top-chamber distribution and pipe distribution. In practical use, in traditional wastewater treatment methods, wastewater enters the reaction tank directly from the top or side. However, when using activated sludge / biofilm processes to treat wastewater, direct entry from the top or side can easily lead to uneven wastewater distribution, affecting treatment efficiency. The impact force of the wastewater entering is also relatively large, which is not conducive to the full utilization of pollutants in the influent by the sludge and may damage the existing biofilm or sediment in the tank. Some wastewater and sludge may remain on the upper layer after entering the reaction tank due to buoyancy, making it difficult to mix fully with the wastewater at the bottom, resulting in poor treatment effect.

[0004] At this point, a water distributor is needed to input the sewage from the bottom of the pool to distribute the sewage evenly. However, during long-term use, due to the special environment of sewage treatment, most of the water distributor is submerged in the sewage. Although most of the sludge in the sewage is adsorbed by the biofilm, a small amount of sludge is still suspended in the sewage and eventually accumulates on the surface of the water distributor and at the nozzles, which obstructs the water output of the water distributor and affects the water output efficiency.

[0005] A search revealed that invention CN113371830A discloses a high-efficiency anti-clogging water distribution device for an anaerobic reactor, comprising a water storage base, an inlet pipe fixedly connected to the upper surface of the water storage base, a cavity ring fixedly connected to the upper surface of the water storage base, a fixing plate sleeved on the outer wall of the inlet pipe, and an electromagnet mechanism installed on the upper surface of the fixing plate. While the device incorporates a scraper internally to prevent clogging, it lacks anti-clogging components at the external outlet. Therefore, when applied to wastewater treatment environments, it fails to address the problem of sludge accumulation at the nozzle leading to reduced water output, and thus cannot be effectively used in wastewater treatment. Summary of the Invention

[0006] To address the problem that existing water distributors cannot function effectively in wastewater treatment ponds with high levels of suspended sludge, and that sludge easily clogs the outlet, this invention proposes an anti-clogging water distribution nozzle and a water distributor for wastewater treatment to solve the aforementioned issues.

[0007] A water distributor for wastewater treatment includes a longitudinal water conveyance pipe;

[0008] A flow guide channel, the bottom of which is fixedly or limited to the top of the longitudinal water conveyance pipe;

[0009] A connecting sleeve, wherein the input end of the connecting sleeve is fixedly connected to the bottom of the longitudinal water conveyance pipe, and the connecting sleeve is provided with at least two output ends;

[0010] A horizontal water distribution pipe, which is fixedly connected to any output end of the connecting sleeve;

[0011] A water distribution branch pipe is arranged parallel to the surface of the transverse water distribution pipe along the water flow direction.

[0012] Water distribution nozzles are fixedly installed on the upper surface of the water distribution branch pipe, and the water distribution nozzles are arranged from sparse to dense along the water flow direction;

[0013] A clog-resistant water distribution nozzle includes a water outlet and a water blocking part, and also includes a limiting rope, wherein the water outlet and the water blocking part are movably connected by the limiting rope.

[0014] Wastewater is diverted through connecting sleeves to multiple transverse distribution pipes, and then transported to individual nozzles via branch pipes, forming a multi-layered water distribution network. The nozzles are arranged from sparse to dense along the water flow direction. Combined with the distribution of transverse distribution pipes and branch pipes, this ensures uniform diffusion of wastewater at the bottom of the reaction tank, improving treatment efficiency.

[0015] Start-up phase: Wastewater enters the longitudinal water conveyance pipeline through the diversion channel, large particulate impurities are intercepted by the grid, and the wastewater after preliminary filtration flows to the connecting sleeve.

[0016] Water distribution stage: Wastewater is distributed to multiple horizontal water distribution pipes through connecting sleeves, and then transported to the nozzles through water distribution branch pipes.

[0017] The nozzle is dynamically adjusted. At low flow rates, the magnetic force counteracts the impact of the water flow, the nozzle is half-open, and the water flow is released slowly in a scattering mode to avoid impacting the biofilm at the bottom of the pool.

[0018] When designing the flow rate: the water flow impact force completely overcomes the magnetic force, the nozzles are fully open, and the diversion block guides the water flow to evenly cover the bottom of the reaction tank, eliminating dead water zones.

[0019] Stop phase: After the water supply stops, the impact force of the water flow disappears, and the magnetic force instantly pulls the water outlet back into the groove, completely sealing the nozzle. The hydrostatic pressure assists in the sealing, preventing external sludge from flowing back into the nozzle.

[0020] The bottom of the water-blocking part is provided with a groove, and the bottom of the groove is provided with a diversion block. The surface of the diversion block is arc-shaped, and a limit ring is sleeved on the outer surface of the top edge of the water outlet part.

[0021] When the water distribution nozzle is in the closed state, the water outlet extends into the groove at the bottom of the water blocking part until the edge of the water outlet at the top of the water outlet contacts the surface of the diverter block.

[0022] When the water distributor is not in operation, the water outlet is connected to the water baffle via a limiting rope, and the first and second magnets attract each other due to their opposite magnetic poles. The magnetic force pulls the water outlet into the groove of the water baffle, completely sealing the water outlet and preventing sludge and impurities in the sewage from entering the nozzle, thus avoiding blockage.

[0023] The design of the limiting rope and limiting ring restricts the movement range of the water outlet, ensuring stable operation of the nozzle when it is turned on, while preventing parts from falling off.

[0024] When water flows into the sprinkler head through the longitudinal water delivery pipe, the impact force of the water flow acts on the outlet section. When the impact force exceeds the attraction force of the magnet, the outlet section is pushed open, the sprinkler head opens, and the sewage is sprayed evenly. The arc surface of the diverter block guides the water flow to disperse, reducing local resistance and further reducing the risk of clogging.

[0025] The diversion block includes a fixed column and a first magnet. The first magnet is fixedly sleeved on the surface of the fixed column. A second magnet is installed at the top of the inner surface of the water outlet. The magnetic poles of the second magnet and the first magnet are opposite at the contact point.

[0026] The magnet is made of corrosion-resistant materials, such as neodymium iron boron coating, to ensure long-term stable operation in sewage environments. The parameters of magnetic force and water flow impact force are matched by calculation to ensure that the nozzle can reliably open and close within the set flow range.

[0027] The limiting ring includes a frustum portion and a ring portion. The ring portion is fixedly connected to the lower surface of the bottom end of the frustum portion. A through hole is opened in the center of the frustum portion. The edge of the upper surface of the top end of the frustum portion is rounded. The two ends of the limiting rope are fixedly connected to the lower surface of the bottom end of the water-blocking part and the lower surface of the bottom end of the limiting ring, respectively.

[0028] The top surface edge of the water-blocking part is rounded, and the shape of the groove corresponds to the limiting ring.

[0029] When the nozzle is closed, there is no water flow impact. The attraction between the first and second magnets inside the nozzle pulls the water outlet into the groove of the water-blocking part, forming a physical seal. The static pressure at the bottom of the water enhances the sealing effect and prevents sludge from seeping into the nozzle.

[0030] When the nozzle is open, wastewater enters the spray head through the longitudinal water supply pipe, and the water flow impacts the outlet. When the impact force exceeds the magnetic attraction and the static pressure at the bottom of the water, the outlet is pushed open, the spray head opens, and the water flow impacts the diverting block. The diverting block has an arc-shaped surface, which evenly disperses the water flow. The inner surface of the groove and the outer surface of the limiting ring form a flow channel, creating a high-speed water flow that washes over the longitudinal water supply pipe and the lower surface of the spray head, cleaning up accumulated sludge and achieving self-cleaning.

[0031] It also includes an upper fixing component and a bottom fixing component. The upper fixing component is fixedly connected to the outer surface of the guide channel, and the bottom fixing component is located at the bottom of the water distribution branch pipe.

[0032] The bottom of the guide channel is funnel-shaped, and an inlet is provided on the side of the guide channel; a grid is provided at the inlet; the bottom of the guide channel is funnel-shaped, and after the sewage enters through the inlet, it is intercepted and broken by the grid, and the preliminarily filtered sewage enters the longitudinal water conveyance pipeline.

[0033] When the water flow rate is low, the magnetic force between the magnets and the static pressure at the bottom of the water still dominate. The nozzle is partially open, the water blocking part is only slightly displaced, the water is sprayed at a low flow rate, and the diverter guides the water flow to form a scattering.

[0034] When the water flow reaches the design flow rate, the water flow impact force, magnetic force, and static pressure at the bottom of the water reach equilibrium, the water-blocking part is fully opened, the nozzle enters the maximum flow state, the water flow impacts the diversion block, the surface of the diversion block is arc-shaped, which evenly disperses the water flow, and the inner surface of the groove and the outer surface of the limiting ring are used to form a flow channel, forming a high-speed water flow to flush the longitudinal water delivery pipe and the lower surface of the nozzle, cleaning up the accumulated sludge and achieving self-cleaning.

[0035] When the water supply is stopped, the water flow is interrupted, the water flow impact force disappears, and the magnetic force takes over again. When the water part rebounds rapidly into the groove in the longitudinal direction under the magnetic force and the static pressure at the bottom of the water, the nozzle is completely sealed.

[0036] When the water distribution branch pipe is long, the water pressure received by the water distribution nozzles at the far end may not be sufficient to counteract the magnetic force and hydrostatic pressure, causing the far-end water distribution nozzles to fail to open normally. In this case, it is necessary to ensure that the inside of the pipe is full or to replace it with a water pump with one of higher power to ensure that the water pressure at the far end is sufficient to open the nozzles.

[0037] This water distributor is particularly suitable for the following underwater environments:

[0038] Biofilm reactors, such as MBBR and BAF, enhance biofilm activity through uniform water distribution.

[0039] Activated sludge processes, such as AAO and AAOAO, achieve efficient pollutant removal by uniformly distributing water in an anaerobic tank.

[0040] Anaerobic digester: Prevents sludge deposition and increases methane production.

[0041] Wastewater treatment plants with high suspended solids: such as those treating wastewater from papermaking and food processing, effectively addressing impurities such as fibers and oils.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. Improve wastewater treatment efficiency

[0044] Uniform water distribution: The arrangement of nozzles from sparse to dense, combined with the distribution of horizontal pipes, ensures that the sewage is evenly diffused on the bottom of the water, increases the contact area with the biofilm, and improves the degradation efficiency of organic matter.

[0045] To prevent short-circuiting: The water distributor distributes water from the bottom of the pool, pushing the sewage to flow upwards and mixing it thoroughly with the sludge in the pool, preventing the sewage from flowing directly out of the surface and causing short-circuiting.

[0046] 2. Enhanced anti-clogging and durability

[0047] Dual anti-clogging design: The nozzle interior uses magnetic sealing and a flow guide grid to completely intercept sludge and impurities, preventing suspended sludge from clogging the nozzle.

[0048] Corrosion-resistant materials: The magnets are made of nickel-plated neodymium iron boron, and the pipes and nozzles are made of stainless steel or engineering plastics to adapt to the corrosive underwater environment.

[0049] 3. Reduce operation and maintenance costs

[0050] Self-cleaning function: When the nozzle is turned on, the high-speed water flow washes the lower surface of the water outlet and part of the water distribution branch pipe, reducing the frequency of manual cleaning.

[0051] Modular maintenance: The nozzles and water distribution branches can be quickly disassembled, facilitating underwater equipment maintenance and reducing maintenance difficulty.

[0052] 4. Energy conservation and environmental protection

[0053] No external power dependence: It works by using only water power and magnetic force, without the need for additional energy consumption.

[0054] Reduce the use of chemical cleaning agents: The self-cleaning mechanism reduces dependence on chemical agents, which is in line with the concept of green wastewater treatment. Attached Figure Description

[0055] Figure 1 A schematic diagram of the installation of an anti-clogging water distribution nozzle and water distributor;

[0056] Figure 2 A schematic diagram of an anti-clogging water distribution nozzle and water distributor;

[0057] Figure 3 for Figure 2Enlarged view of section A in the middle;

[0058] Figure 4 A 3D view of the water distribution nozzles in the closed state;

[0059] Figure 5 A 3D view of the water distribution nozzle in operation;

[0060] Figure 6 This is a cross-sectional view of the water distribution nozzle in the closed state.

[0061] Figure 7 This is a cross-sectional view of the water distribution nozzle in its working state.

[0062] Figure 8 This is an exploded cross-sectional view of a water distribution nozzle;

[0063] Figure 9 for Figure 8 Enlarged view of section B.

[0064] In the picture:

[0065] 1. Upper fixing component; 2. Fixing hole; 3. Longitudinal water supply pipe; 4. Connecting sleeve; 5. Transverse water distribution pipe; 6. Bottom fixing component; 7. Water distribution nozzle; 701. Water outlet; 702. Water blocking part; 703. Diverting block; 704. Limiting rope; 705. Limiting ring; 8. Water distribution branch pipe; 9. Guide channel; 10. First magnet; 11. Second magnet; 12. Flow channel. Detailed Implementation

[0066] Example 1

[0067] like Figure 4-7 As shown, an anti-clogging water distribution nozzle 7 includes a water outlet 701 and a water blocking part 702, and also includes a limiting rope 704. The water outlet 701 and the water blocking part 702 are movably connected by the limiting rope 704.

[0068] The bottom of the water-blocking part 702 is provided with a groove, and a diverting block 703 is provided at the bottom of the groove. The surface of the diverting block 703 is arc-shaped, and a limiting ring 705 is sleeved on the outer surface of the top edge of the water outlet part 701.

[0069] When the water distribution nozzle 7 is in the closed state, the water outlet 701 extends into the groove at the bottom of the water blocking part 702 until the edge of the water outlet at the top of the water outlet 701 contacts the surface of the diverter block 703.

[0070] When the water distributor is not in operation, the water outlet 701 is connected to the water blocking part 702 via the limiting rope 704, and the first magnet 10 and the second magnet 11 attract each other due to their opposite magnetic poles. The magnetic force pulls the water outlet into the groove of the water blocking part, completely sealing the water outlet and preventing sludge and impurities in the sewage from entering the nozzle, thus avoiding blockage.

[0071] The design of the limiting rope 704 and the limiting ring 705 restricts the movement range of the water outlet, ensuring stable operation of the nozzle when it is open, while preventing parts from falling off.

[0072] When water flows into the nozzle through the longitudinal water supply pipe 3, the water flow impact force acts on the outlet section 701. When the impact force exceeds the attraction force of the magnet, the outlet section is pushed open, the nozzle opens, and the sewage is sprayed evenly. The arc surface of the diverter block 703 guides the water flow to disperse, reducing local resistance and further reducing the risk of clogging.

[0073] The diversion block 703 includes a fixed column and a first magnet 10. The first magnet 10 is fixedly sleeved on the surface of the fixed column. A second magnet 11 is installed at the top of the inner surface of the water outlet 701. The magnetic poles of the second magnet 11 and the first magnet 10 are opposite at the contact point.

[0074] The magnet is made of corrosion-resistant materials, such as neodymium iron boron coating, to ensure long-term stable operation in sewage environments. The parameters of magnetic force and water flow impact force are matched by calculation to ensure that the nozzle can reliably open and close within the set flow range.

[0075] The limiting ring 705 includes a frustum portion and an annular portion. The annular portion is fixedly connected to the lower surface of the bottom end of the frustum portion. A through hole is provided in the center of the frustum portion. The edge of the upper surface of the top end of the frustum portion is rounded. The two ends of the limiting rope 704 are fixedly connected to the lower surface of the bottom end of the water-blocking portion 702 and the lower surface of the bottom end of the limiting ring 705, respectively.

[0076] The top surface edge of the water-blocking part 702 is rounded, and the shape of the groove corresponds to that of the limiting ring 705.

[0077] When the nozzle is closed, there is no water flow impact. The attraction between the first magnet 10 and the second magnet 11 inside the nozzle pulls the water outlet 701 into the groove of the water-blocking part 702, forming a physical seal. The static pressure at the bottom of the water enhances the sealing effect and prevents sludge from seeping into the nozzle.

[0078] When the nozzle is open, sewage enters the nozzle through the longitudinal water supply pipe 3, and the water flow impact force acts on the water outlet 701. When the impact force exceeds the magnetic attraction and the static pressure at the bottom of the water, the water outlet is pushed open, the nozzle opens, and the water flow impacts the diverting block 703. The surface of the diverting block 703 is arc-shaped, which evenly disperses the water flow. The inner surface of the groove and the outer surface of the limiting ring 705 cooperate to form a flow channel 12, forming a high-speed water flow to flush the longitudinal water supply pipe 3 and the lower surface of the nozzle, cleaning up the accumulated sludge and achieving self-cleaning.

[0079] It also includes an upper fixing member 1 and a bottom fixing member 6. The upper fixing member 1 is fixedly connected to the outer surface of the guide channel 9, and the bottom fixing member 6 is located at the bottom of the water distribution branch pipe 8.

[0080] When the water flow rate is low, the magnetic force between the magnets and the static pressure at the bottom of the water still dominate. The nozzle is partially open, the water blocking part is only slightly displaced, the water is sprayed at a low flow rate, and the diverter guides the water flow to form a scattering.

[0081] When the water flow reaches the design flow rate, the water flow impact force, magnetic force, and static pressure at the bottom of the water reach equilibrium, the water-blocking part is fully opened, the nozzle enters the maximum flow state, and the water flow impacts the diversion block 703. The surface of the diversion block 703 is arc-shaped, which evenly disperses the water flow. The inner surface of the groove and the outer surface of the limiting ring 705 are used to form the flow channel 12, forming a high-speed water flow to flush the longitudinal water conveyance pipe 3 and the lower surface of the nozzle, cleaning up the accumulated sludge and achieving self-cleaning.

[0082] When the water supply is stopped, the water flow is interrupted, the water flow impact force disappears, and the magnetic force takes over again. When the water part rebounds rapidly into the groove in the longitudinal direction under the magnetic force and the static pressure at the bottom of the water, the nozzle is completely sealed.

[0083] This water distributor is particularly suitable for the following underwater environments:

[0084] Biofilm reactors (such as MBBR and BAF): enhance biofilm activity through uniform water distribution.

[0085] Anaerobic digester: Prevents sludge deposition and increases methane production.

[0086] Wastewater treatment plants with high suspended solids: such as those treating wastewater from papermaking and food processing, effectively addressing impurities such as fibers and oils.

[0087] Example 2

[0088] like Figure 1-3 As shown, a water distributor for sewage treatment includes a longitudinal water conveyance pipe 3;

[0089] The bottom of the guide channel 9 is fixedly or limited to the top of the longitudinal water conveyance pipe 3;

[0090] Connecting sleeve 4, the input end of the connecting sleeve 4 is fixedly connected to the bottom of the longitudinal water conveyance pipe 3, and the connecting sleeve 4 is provided with at least two output ends;

[0091] A horizontal water distribution pipe 5 is fixedly connected to any output end of the connecting sleeve 4;

[0092] Water distribution branch pipe 8 is arranged parallel to the surface of the transverse water distribution pipe 5 along the water flow direction;

[0093] Water distribution nozzles 7 are fixedly installed on the upper surface of the water distribution branch pipe 8, and the water distribution nozzles 7 are arranged from sparse to dense along the water flow direction.

[0094] Wastewater is diverted through connecting sleeve 4 to multiple transverse water distribution pipes 5, and then transported to each nozzle via water distribution branch pipes 8, forming a multi-layer water distribution network. The water distribution nozzles 7 are arranged from sparse to dense along the water flow direction. Combined with the distribution of transverse water distribution pipes 5 and water distribution branch pipes 8, the wastewater is evenly diffused at the bottom of the reaction tank, improving treatment efficiency.

[0095] Start-up phase: Wastewater enters the longitudinal water conveyance pipe 3 through the diversion channel 9, where the grid intercepts large particles of impurities, and the pre-filtered wastewater flows to the connecting sleeve 4.

[0096] Water distribution stage: Wastewater is distributed to multiple horizontal water distribution pipes 5 via connecting sleeve 4, and then transported to water distribution nozzles 7 via water distribution branch pipes 8.

[0097] The nozzle is dynamically adjusted. At low flow rates, the magnetic force counteracts the impact of the water flow, the nozzle is half-open, and the water flow is released slowly in a scattering mode to avoid impacting the biofilm at the bottom of the pool.

[0098] When designing the flow rate: the water flow impact force completely overcomes the magnetic force, the nozzles are fully open, and the diverter block 703 guides the water flow to evenly cover the bottom of the reaction tank, eliminating dead water zones.

[0099] Stop phase: After the water supply stops, the impact force of the water flow disappears, and the magnetic force instantly pulls the water outlet 701 back into the groove, completely sealing the nozzle. The hydrostatic pressure assists in the sealing, preventing external sludge from flowing back into the nozzle.

[0100] Example 3

[0101] Based on Embodiment 1, a wastewater distributor is provided, wherein the bottom surface of the guide channel 9 is funnel-shaped, and an inlet is provided on the side of the guide channel 9; a grid is provided at the inlet; the bottom surface of the guide channel 9 is funnel-shaped, and after the wastewater enters through the inlet, it is intercepted and broken by the grid, and the preliminarily filtered wastewater enters the longitudinal water conveyance pipeline.

Claims

1. A clog resistant spreading jet, characterized by: It comprises a water outlet part (701) and a water blocking part (702), and a limiting rope (704), wherein the water outlet part (701) and the water blocking part (702) are movably connected by the limiting rope (704).

2. A clog resistant spreading jet according to claim 1, wherein: The bottom of the water blocking part (702) is provided with a groove, and the bottom of the groove is provided with a flow dividing block (703), the surface of the flow dividing block (703) is arc-shaped, and the outer surface of the top end edge of the water outlet part (701) is sleeved with a limiting ring (705). The water outlet part (701) extends into the groove at the bottom of the water blocking part (702) until the top end water outlet edge of the water outlet part (701) is in contact with the surface of the flow dividing block (703).

3. A clog resistant spreading jet according to claim 2, wherein: The flow dividing block (703) comprises a fixed column and a first magnet (10), the first magnet (10) is fixedly sleeved on the surface of the fixed column, the top end of the inner surface of the water outlet part (701) is provided with a second magnet (11), and the magnetic poles of the second magnet (11) and the first magnet (10) are opposite at the contact position.

4. A clog resistant spreading jet according to claim 3, wherein: The limiting ring (705) comprises a circular truncated cone part and a circular ring part, the circular ring part is fixedly connected to the bottom end lower surface of the circular truncated cone part, a through hole is formed in the center of the circular truncated cone part, the top end upper surface edge of the circular truncated cone part is a round corner, and the two ends of the limiting rope (704) are fixedly connected to the bottom end lower surface of the water blocking part (702) and the bottom end lower surface of the limiting ring (705) respectively.

5. A clog resistant spreading jet according to claim 3, wherein: The top end upper surface edge of the water blocking part (702) is a round corner, and the shape of the groove corresponds to the limiting ring (705).

6. A water distributor for sewage treatment, comprising the anti-clogging water distribution nozzle according to any one of claims 1-5, characterized in that: A longitudinal water conveying pipe (3); A flow guide groove (9) is fixedly arranged or limitingly arranged at the bottom of the longitudinal water conveying pipe (3); A connecting sleeve (4) is fixedly connected to the bottom of the longitudinal water conveying pipe (3) at the input end, and the connecting sleeve (4) is provided with at least two output ends; A transverse water distribution pipe (5) is fixedly connected to any output end of the connecting sleeve (4); A water distribution branch pipe (8) is arranged in parallel on the surface of the transverse water distribution pipe (5) along the water flow direction; A water distribution nozzle (7) is fixedly installed on the upper surface of the water distribution branch pipe (8), and the water distribution nozzle (7) is arranged from sparse to dense along the water flow direction.

7. The water distributor for sewage treatment according to claim 6, characterized in that: An upper fixing part (1) and a bottom fixing part (6) are further included, the upper fixing part (1) is fixedly connected to the outer surface of the flow guide groove (9), and the bottom fixing part (6) is located at the bottom of the water distribution branch pipe (8).

8. The water distributor for sewage treatment according to claim 7, characterized in that: The bottom surface of the flow guide groove (9) is funnel-shaped, and the side surface of the flow guide groove (9) is provided with a water inlet.

9. The water distributor for sewage treatment according to claim 8, characterized in that: A grid is arranged at the water inlet.

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