Integrated water treatment plant

Abstract

The application relates to the technical field of sewage treatment, and provides an integrated water treatment equipment which comprises a shell, suspended filter material, a filter assembly and a rotating impeller, the inside of the shell is provided with a water inlet area, a sedimentation area, a water production area and a sludge discharge area, the water inlet area and the water production area are arranged side by side at the top of the sedimentation area, the sludge discharge area is located at the bottom of the sedimentation area, and the water inlet area, the water production area and the sludge discharge area are respectively communicated with the sedimentation area; the suspended filter material is arranged at the top in the sedimentation area and is located below the water production area; the filter assembly is arranged in the water production area; and the rotating impeller is rotatably arranged in the sedimentation area and is located below the suspended filter material. The application has the advantages of compact equipment structure, reduced land occupation, improved filtering precision and sedimentation efficiency and low energy consumption.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to an integrated water treatment device. Background Technology

[0002] Existing wastewater treatment systems typically consist of multiple independent treatment tanks (such as reaction tanks and sedimentation tanks), which are connected by pumps and complex pipelines. This results in a complex system structure, large footprint, high energy consumption, and low treatment efficiency. Summary of the Invention

[0003] The purpose of this application is to provide an integrated water treatment device that aims to solve the problems of complex structure, large footprint, high energy consumption, and low treatment efficiency in existing sewage treatment systems.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: This application provides an integrated water treatment device, including: The shell has an internal water inlet zone, a sedimentation zone, a product water zone, and a sludge discharge zone. The water inlet zone and the product water zone are arranged side by side at the top of the sedimentation zone, and the sludge discharge zone is located at the bottom of the sedimentation zone. The water inlet zone, the product water zone, and the sludge discharge zone are all connected to the sedimentation zone. Suspended filter media is disposed at the top of the sedimentation zone and below the product water zone; The filter assembly is located within the water production area; A rotating impeller is rotatably disposed within the sedimentation zone and located below the suspended filter media.

[0005] In the aforementioned technical solution, by integrating the inlet zone, sedimentation zone, product water zone, and sludge discharge zone into the same housing and rationally arranging them into a connected structure where the inlet and product water zones are located side-by-side at the top of the sedimentation zone and the sludge discharge zone is located at the bottom of the sedimentation zone, the number of pumps and complex pipeline connections required in traditional wastewater treatment systems are reduced. This effectively simplifies the overall structure and reduces equipment energy consumption and floor space. Simultaneously, the rotating impeller within the sedimentation zone creates a circulating flow field during operation, promoting rapid collision, adhesion, and formation of high-density macro-flocs from fine sludge particles in the raw water. This accelerates the sedimentation process, improves sedimentation efficiency, and propels the settled sludge towards the sludge discharge zone for automatic sludge discharge. Combined with the suspended filter media at the top of the sedimentation zone for initial interception and filtration, and the secondary deep filtration by the filter components in the product water zone, a multi-stage synergistic purification mechanism is formed. This not only significantly improves solid-liquid separation efficiency and sludge concentration but also ensures stable and compliant effluent quality.

[0006] In some embodiments, an inlet channel is provided between the inlet zone and the sedimentation zone, extending circumferentially along the rotating impeller. The inlet channel has an inlet communicating with the inlet zone and an outlet communicating with the sedimentation zone. The outlet faces the suspended filter media, and the inlet direction of the inlet channel is opposite to the rotation direction of the rotating impeller.

[0007] In the above technical solution, the rotating impeller carries the suspended filter media with top contamination to the outlet area of ​​the inlet channel, where it is counter-flushed by the raw water flowing in from the inlet channel. This achieves automatic cleaning of the filter media, improves its filtration performance, and avoids frequent replacements. The contaminants detached from the washout mix with sludge particles in the raw water, and under the action of the impeller's flow field, the formation and growth of flocs are accelerated, significantly improving sedimentation efficiency. This design not only eliminates the need for an additional backwashing device, further simplifying the structure and reducing operation and maintenance costs, but also improves overall water treatment efficiency and resource utilization efficiency.

[0008] In some embodiments, the interior of the housing is provided with a first guide plate and a second guide plate, which are disposed between the water inlet area and the sedimentation area and are staggered relative to each other in the height direction of the housing to form the water inlet channel between the first guide plate and the second guide plate.

[0009] In the above technical solution, a slit-type arc-shaped water inlet channel with directional flow guidance function is cleverly constructed by setting a first guide plate and a second guide plate that are staggered in the height direction of the shell between the water inlet zone and the sedimentation zone. This structure effectively achieves uniform flow guidance of raw water, precisely controls the direction of water inlet flow, making it opposite to the rotation direction of the rotating impeller and facing the suspended filter media area, thereby providing a stable flushing water flow for the self-cleaning of the filter media. At the same time, this flow guidance structure does not require additional pipes or power units, as it is integrated inside the shell, further simplifying the equipment structure and improving the rationality of water flow organization and the stability of the treatment process.

[0010] In some embodiments, a third guide plate arranged laterally is provided in the water inlet area. The third guide plate has a connecting side and a free side. The connecting side is connected to the side wall of the housing, and the free side is lower than the connecting side.

[0011] In the above technical solution, by installing a downward-sloping third guide plate in the inlet area, the raw water can smoothly slide down the guide plate into the sedimentation zone. This structure effectively buffers and dissipates energy, and evenly distributes water, preventing high-speed water inflow from impacting internal components or causing localized blockages in the inlet channel, thus reducing the risk of clogging. Simultaneously, the stable water flow is more conducive to creating synergistic hydraulic conditions with the downstream inlet channel formed by the first and second guide plates and the rotating impeller, ensuring the flushing effect of the suspended filter media and the sludge flocculation efficiency. This design is simple in structure, requires no additional energy consumption, and further improves the stability, reliability, and long-term anti-clogging performance of the equipment.

[0012] In some embodiments, the filtration assembly includes a plurality of filtration units arranged side by side in the water production zone.

[0013] In the above technical solution, by setting up multiple filtration units in the water production area, not only is the overall filtration throughput and treatment stability significantly improved, but the operating load of individual units is also effectively reduced, clogging is delayed, and service life is extended. Furthermore, even if some units require maintenance or replacement, the remaining units can still ensure continuous water production, guaranteeing that the effluent water quality consistently meets standards.

[0014] In some embodiments, the filtration unit includes a water collection box, multiple filters, multiple backwash main pipes, a water collection pipe, and a control valve. Each filter is installed through the water collection box along the height direction of the housing, and each filter has a filter inlet at its bottom and a filter outlet at its top. The filter inlet is connected to the sedimentation zone, and the filter outlet is connected to the product water zone. Each filter is connected to the water collection box via the backwash main pipe, which extends along the height direction. The filter assembly also includes a backwash pump, which is connected to the water collection box via the water collection pipe, and the control valve is located in the water collection pipe.

[0015] In the above technical solution, the filtration unit integrates a water collection box, multiple vertically inserted filters, a backwash main pipe, a water collection pipe, and control valves, forming a self-cleaning system with zoned control in conjunction with a backwash pump. During backwashing, purified water from the production water zone flows through the water collection box and backwash main pipe to flush the filters from top to bottom, restoring their filtration performance. Backwash wastewater simultaneously flushes the suspended filter media below, carrying detached pollutants into the sedimentation zone, where the rotating impeller promotes sludge flocculation and efficient sedimentation. The control valves allow for flexible opening and closing of the backwashing operation of each unit, supporting parallel cleaning of multiple units and enabling maintenance without shutting down the system. This design not only significantly extends the service life of the filter components and suspended filter media, avoiding frequent replacements, but also fully utilizes the equipment's self-produced purified water for cleaning, improving water resource utilization efficiency and enhancing sludge treatment efficiency.

[0016] In some embodiments, the filtration unit further includes a plurality of backwash branch pipes, each of the backwash main pipes being connected to the corresponding filter via the backwash branch pipe. Each backwash branch pipe has a first end and a second end, the first end being connected to the backwash main pipe and the second end being connected to the filter, with the first end being higher than the second end.

[0017] In the above technical solution, by setting the backwash branch pipe horizontally inclined downward, the height difference and pipeline turning are used to guide the backwash water flow to form a top-down swirling flow field when entering the filter, which enhances the ability to flush and remove pollutants inside the filter media and improves the uniformity and thoroughness of backwashing.

[0018] In some embodiments, a filter screen is provided between the filter inlet and the suspended filter media.

[0019] In the above technical solution, by setting a filter screen between the filter inlet and the suspended filter media, the suspended filter media is effectively prevented from floating into the filter interior due to water flow disturbance or impeller action, thus avoiding the risk of blockage and ensuring the long-term stable operation and deep filtration efficiency of the filter.

[0020] In some embodiments, a sludge collecting plate is provided in the sedimentation zone, the sludge collecting plate is located at the bottom of the rotating impeller and is connected to the sludge discharge zone.

[0021] In the above technical solution, by setting a sludge collecting plate at the bottom of the rotating impeller and connected to the sludge discharge zone in the sedimentation zone, the settled sludge can be collected. Under the push of the bottom flow field generated by the rotating impeller, the sludge can automatically slide along the surface of the sludge collecting plate and be concentrated and introduced into the sludge discharge zone, thereby achieving efficient and continuous automatic sludge discharge.

[0022] In some embodiments, a sludge concentration detector is provided in the sedimentation zone, and the sludge concentration detector is located at the bottom of the suspended filter media.

[0023] In the above technical solution, by setting a sludge concentration detector in the sedimentation zone, the sludge concentration in the bottom area of ​​the suspended filter media can be monitored in real time, thereby preventing sludge from accumulating and agglomerating under the filter media, avoiding clogging of the filter media pores, affecting water flow distribution and filtration performance, avoiding frequent replacement, and reducing maintenance costs.

[0024] In some embodiments, a water quality sensor is provided in the water production area.

[0025] In the above technical solution, water quality sensors are installed in the water production area to monitor the quality of the treated effluent in real time, ensuring that the effluent quality meets the standards.

[0026] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the integrated water treatment equipment provided in the embodiments of this application; Figure 2 This is a schematic diagram of the internal structure of the integrated water treatment equipment provided in the embodiments of this application; Figure 3 A schematic diagram of the structure of the first and second guide vanes provided in the embodiments of this application from one perspective; Figure 4 A structural schematic diagram of the first and second guide vanes provided in an embodiment of this application, from yet another perspective. Figure 5 This is a schematic diagram of the structure of the filtering component provided in the embodiments of this application; Figure 6 This is a schematic diagram of the structure of the filtering unit provided in an embodiment of this application from one perspective; Figure 7 This is another structural schematic diagram of the filtering unit provided in the embodiments of this application.

[0029] The following are the labeling elements in the figure: 1. Shell; 11. Inlet Zone; 12. Sedimentation Zone; 13. Product Water Zone; 14. Sludge Discharge Zone; 2. Suspended filter media; 3. Filter assembly; 31. Filter unit; 311. Water collection box; 312. Filter; 3121. Filter inlet; 3122. Filter outlet; 313. Backwash main pipe; 314. Water collection pipe; 315. Control valve; 316. Mounting base plate; 317. Positioning hole; 318. Backwash branch pipe; 3181, First end; 3182, Second end; 4, Rotating impeller; 5, Motor; 6, Drive gear; 7. Driven gear; 8. Drive belt; 9. Water inlet channel; 91. Water inlet; 92. Water outlet; 101. First guide vane; 102. Second guide vane; 1021. Bend; 103. First baffle; 104. First side plate; 105. Third guide plate; 1051. Connecting side; 1052. Free side; 106. Second side plate; 107. Mud collection plate; 108. Second partition plate. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0031] In the description of the embodiments of this application, it should be understood that the terms "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0033] In the embodiments of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0034] In existing wastewater treatment technologies, conventional treatment systems typically employ a decentralized layout, including independently located influent equalization tanks, primary sedimentation tanks, biological reaction tanks, secondary sedimentation tanks, and other treatment tanks. These tanks rely on multi-stage pumps and complex pipelines for water transport and sludge return. Such systems are structurally complex, occupy a large area, consume high energy, and have low treatment efficiency.

[0035] To address the aforementioned technical problems, this application provides an integrated water treatment device. By integrating the inlet zone, sedimentation zone, product water zone, and sludge discharge zone into a single housing, and rationally arranging them in a connected structure where the inlet and product water zones are positioned side-by-side at the top of the sedimentation zone, and the sludge discharge zone is located at the bottom of the sedimentation zone, this reduces the number of pumps and complex piping connections required in traditional wastewater treatment systems, effectively simplifying the overall structure and lowering energy consumption and floor space. Simultaneously, the rotating impeller within the sedimentation zone creates a circulating flow field during operation, promoting rapid collision, adhesion, and formation of high-density macro-flocs from fine sludge particles in the raw water, accelerating the sedimentation process, improving sedimentation efficiency, and driving the settled sludge towards the sludge discharge zone for automatic sludge discharge. Combined with the suspended filter media at the top of the sedimentation zone for initial interception and filtration, and the secondary deep filtration by the filter components in the product water zone, a multi-stage synergistic purification mechanism is established. This not only significantly improves solid-liquid separation efficiency and sludge concentration but also ensures stable and compliant effluent quality.

[0036] In some embodiments, refer to Figure 1 and Figure 2 As shown in the figure, this application provides an integrated water treatment device, including: a shell 1, suspended filter media 2, a filter assembly 3, and a rotating impeller 4. The shell 1 has an inlet zone 11, a sedimentation zone 12, a product water zone 13, and a sludge discharge zone 14 inside. The inlet zone 11 and the product water zone 13 are arranged side-by-side at the top of the sedimentation zone 12, and the sludge discharge zone 14 is located at the bottom of the sedimentation zone 12. The inlet zone 11, the product water zone 13, and the sludge discharge zone 14 are all connected to the sedimentation zone 12. The suspended filter media 2 is disposed at the top of the sedimentation zone 12 and below the product water zone 13. The filter assembly 3 is disposed within the product water zone 13. The rotating impeller 4 is rotatably disposed within the sedimentation zone 12 and below the suspended filter media 2.

[0037] The housing 1, serving as the outer shell of the entire equipment, can be a sealed square or cylindrical box structure. Internally, it can be divided by partitions and other components to form interconnected inlet water zone 11, sedimentation zone 12, product water zone 13, and sludge discharge zone 14. The inlet water zone 11 is located at the top of the sedimentation zone 12, facilitating the flow of raw water from top to bottom and reducing energy loss. The product water zone 13 is arranged side-by-side with the inlet water zone 11 at the top of the sedimentation zone 12, ensuring that the purified water, filtered by the suspended filter media 2 and filter assembly 3, remains above the housing 1 while the sludge settles, improving water intake convenience and sludge settling efficiency. The sludge discharge zone 14 is located at the bottom of the sedimentation zone 12, facilitating sludge collection. The interconnected functional areas of the housing 1 eliminate the need for piping, simplifying the equipment structure, effectively reducing the floor space required, and enhancing structural compactness.

[0038] In some embodiments, the housing 1 may be made of materials such as aluminum alloy, carbon steel, or stainless steel.

[0039] In some embodiments, the top of the housing 1 may be provided with a water inlet communicating with the water inlet area 11 for supplying untreated raw water.

[0040] Suspended filter media 2 is filled in the area near the top of the sedimentation zone 12 and is located below the product water zone 13, for the initial filtration of raw water flowing into the sedimentation zone 12 from the inlet zone 11.

[0041] In some embodiments, the suspended filter media 2 can be a lightweight porous material, such as polyethylene (PE), polypropylene (PP), etc., with a density slightly less than that of water, and can remain suspended under the action of water flow.

[0042] The filter assembly 3 is located in the water production zone 13 and can perform secondary deep filtration (such as membrane filtration, sand filtration, etc.) on the supernatant after preliminary purification to ensure that the effluent water quality meets the standards.

[0043] In some embodiments, a top cover for opening and closing the water production zone 13 may be provided on the top of the housing 1. During equipment operation, the top cover is in the closed state; when water needs to be drawn or the internal filter components 3 and suspended filter media 2 need to be replaced or maintained, the top cover can be opened.

[0044] The rotating impeller 4 is rotatably installed within the sedimentation zone 12, located below the suspended filter media 2, and can simultaneously perform agitation and sludge scraping functions. Specifically, when the rotating impeller 4 is running, it can create a circulating flow field within the sedimentation zone 12, promoting the rapid collision, adhesion, and formation of high-density macro-flocs by fine sludge particles in the raw water, accelerating the sedimentation process and improving sedimentation efficiency. In addition, the flow field at the bottom of the impeller can also push the settled sludge to migrate towards the sludge discharge zone 14, achieving automatic sludge discharge and improving solid-liquid separation efficiency and sludge concentration effect.

[0045] In some embodiments, the rotating impeller 4 can be a vertical rotating impeller, and the rotating impeller 4 can be driven to rotate by a motor 5. As an example, such as... Figure 1 and Figure 2 As shown, the motor 5 can be located inside the housing 1 at the lower right corner. The shaft of the motor 5 can pass through one side wall of the housing 1 along the width direction Y to the outside, for mounting the drive gear 6. The shaft of the rotating impeller 4 is arranged horizontally, and one end of it passes through one side wall of the housing 1 along the width direction Y to the outside, for mounting the driven gear 7. The drive gear 6 and the driven gear 7 are connected by a transmission belt 8. When the motor 5 rotates, it drives the drive gear 6 to rotate, and drives the driven gear 7 to rotate via the transmission belt 8, thereby driving the rotating impeller 4 to rotate.

[0046] In some embodiments, a sludge discharge pipe connected to the sludge discharge area 14 may be provided at the bottom of the housing 1, and an auger may also be provided in the sludge discharge area 14 to improve sludge discharge efficiency.

[0047] The operation of the integrated water treatment equipment provided in the embodiments of this application is described below, which generally includes: Raw water flows from the inlet zone 11 into the sedimentation zone 12, and is initially purified by the suspended filter media 2. The resulting supernatant enters the product water zone 13, and is further filtered by the filter assembly 3 to obtain purified water. In addition, the rotating impeller 4 in the sedimentation zone 12 rotates to promote the settling of flocs and guides the deposited sludge to the sludge discharge zone 14. The sludge discharge zone 14 can periodically or continuously discharge concentrated sludge.

[0048] Therefore, the integrated water treatment equipment provided in this application improves structural compactness and reduces equipment footprint through integrated zoning design, and improves filtration accuracy through multi-stage filtration design and sludge settling efficiency through rotating impeller 4. The equipment in this application features compact structure, high operating efficiency, and low energy consumption.

[0049] In some embodiments, refer to Figures 2 to 4 As shown, an inlet channel 9 is provided between the inlet zone 11 and the sedimentation zone 12, extending circumferentially along the rotating impeller 4. The inlet channel 9 has an inlet 91 connecting the inlet zone 11 and an outlet 92 connecting the sedimentation zone 12. The outlet 92 faces the suspended filter media 2, and the inlet direction of the inlet channel 9 is opposite to the rotation direction of the rotating impeller 4.

[0050] The inlet channel 9 is located at the bottom of the inlet zone 11 and connects to the sedimentation zone 12. The inlet channel 9 extends circumferentially around the rotating impeller 4, meaning it is distributed around the periphery of the impeller; that is, the shape of the inlet channel 9 is an arc adapted to the circumference of the rotating impeller 4 to achieve a flow guiding function. The inlet direction of the inlet channel 9 refers to the direction of water flow from the inlet 91 to the outlet 92, and this direction is opposite to the rotation direction of the rotating impeller 4. This creates a counter-current flow field, ensuring that the raw water discharged through the outlet 92 can flush the filter media. For example, if the rotation direction of the rotating impeller 4 is clockwise, then the inlet direction of the inlet channel 9 is counterclockwise.

[0051] During operation, the rotating impeller 4 can drive the suspended filter media 2 with pollutants attached to the top of the sedimentation zone 12 to move towards the outlet 92 area of ​​the inlet channel 9. At this time, the raw water is sprayed out from the inlet channel 9 in the opposite direction to the rotation direction of the impeller, which reverses the flow and washes the suspended filter media 2 brought to the outlet 92 area. The washing action removes the dirt trapped on the surface of the filter media and improves the filtration performance. The washed filter media floats up again due to its own buoyancy and the disturbance of the water flow. The sludge particles washed down mix with the sludge in the raw water, and in the circulation flow induced by the impeller, the particles collide, flocculate and increase in size, which accelerates the sedimentation.

[0052] Therefore, this embodiment of the application achieves self-cleaning of the suspended filter media 2 by cooperating with the rotating impeller 4 and the water inlet channel 9 and utilizing raw water, which can extend its service life, avoid frequent replacement, and improve sedimentation efficiency. This design not only eliminates the need for an additional backwashing device, further simplifying the structure and reducing operation and maintenance costs, but also improves the overall water treatment efficiency and resource utilization efficiency.

[0053] In some embodiments, refer to Figures 2 to 4 As shown, the interior of the shell 1 is provided with a first guide plate 101 and a second guide plate 102. The first guide plate 101 and the second guide plate 102 are located between the water inlet area 11 and the sedimentation area 12, and are staggered relative to each other in the height direction Z of the shell 1, so as to form a water inlet channel 9 between the first guide plate 101 and the second guide plate 102.

[0054] For example, the interior of the housing 1 is provided with a first partition 103, which is vertically disposed between the water inlet zone 11 and the water production zone 13. The upper side of the first partition 103 is connected to the top wall of the housing 1. The first guide plate 101 and the second guide plate 102 are arc-shaped to match the circumference of the rotating impeller 4. The first guide plate 101 is disposed above the second guide plate 102. One end of the first guide plate 101 is connected to the lower side of the first partition 103, and one end of the second guide plate 102 is connected to the lower side of the first partition 103. On the side wall of the housing 1 of the first partition 103, which is the right side wall of the housing 1 along the length direction X, the other end of the first guide plate 101 and the other end of the second guide plate 102 extend towards each other, thereby constructing a slit-type water inlet channel 9 with directional flow guidance function between the two guide plates. This structure can achieve uniform guidance of raw water and precisely control the direction of water inlet flow, making it opposite to the rotation direction of the rotating impeller 4 and facing the area of ​​suspended filter media 2, thereby providing a stable flushing water flow for the self-cleaning of the filter media. At the same time, this flow guidance structure does not require additional pipes or power devices and is integrated inside the housing 1, further simplifying the equipment structure and improving the rationality of water flow organization and the stability of the treatment process.

[0055] In some embodiments, refer to Figure 3 and Figure 4 As shown, the second guide plate 102 has a bent portion 1021 at one end connected to the right side wall of the housing 1. The bent portion 1021 is located at the inlet 91 of the water inlet channel 9 and together with the arc-shaped water inlet channel 9, forms a water trap structure. This embodiment utilizes the principle of liquid sealing to construct a stable hydraulic barrier at the inlet 91 of the water inlet channel 9, effectively preventing the suspended filter media 2 in the sedimentation zone 12 from flowing back into the water inlet zone 11 due to water flow disturbance, thus avoiding blockage of the water inlet channel 9.

[0056] In some embodiments, refer to Figures 2 to 4 As shown, one side of the first guide plate 101 and the second guide plate 102 are connected to the first side plate 104, which is located on the front side of the housing 1 along the width direction Y. The other side of the first guide plate 101 and the second guide plate 102 are connected to the rear side wall of the housing 1 along the width direction Y, thereby forming a water inlet channel 9 between the housing 1, the two guide plates and the first side plate 104.

[0057] In some embodiments, refer to Figure 2 As shown, a third guide plate 105 is arranged horizontally in the water inlet area 11. The third guide plate 105 has a connecting side 1051 and a free side 1052. The connecting side 1051 is connected to the side wall of the shell 1, and the free side 1052 is lower than the connecting side 1051.

[0058] The third guide plate 105 has a connecting side 1051 and a free side 1052. The connecting side 1051 is fixedly connected to the right side wall of the shell 1 along the length direction X, and the free side 1052 extends downward and is lower than the connecting side 1051, making the third guide plate 105 an overall inclined downward plate structure. After the raw water enters the water inlet 11 from the water inlet at the top of the shell 1, it first impacts the upper surface of the third guide plate 105 and slides smoothly down its inclined surface, and then enters the sedimentation zone 12 through the water inlet channel 9 below. This structure allows the raw water to slide smoothly down the guide plate into the sedimentation zone 12, effectively buffering and dissipating energy, and uniformly distributing water, avoiding high-speed water inlet from impacting internal components or causing local blockage at the water inlet channel 9, thus reducing the risk of blockage. At the same time, the stable water flow is more conducive to forming synergistic hydraulic conditions with the downstream water inlet channel 9 composed of the first guide plate 101 and the second guide plate 102 and the rotating impeller 4, ensuring the flushing effect of the suspended filter media 2 and the sludge flocculation efficiency. The design is simple in structure and requires no additional energy consumption, further improving the stability, reliability and long-term anti-clogging performance of the equipment.

[0059] In some embodiments, refer to Figure 2 As shown, a second side plate 106 is provided on one side of the third guide plate 105. The second side plate 106 is located on the front side of the housing 1 along the width direction Y. The other side of the third guide plate 105 is connected to the rear side wall of the housing 1 along the width direction Y, thereby forming a guide channel between the housing 1, the guide plate and the second side plate 106.

[0060] In some embodiments, the water inlet zone 11 is connected to a dosing pump (not shown in the figure), and a mixer (not shown in the figure) is provided in the water inlet zone 11, with the mixer located above the third guide plate 105.

[0061] Coagulants such as polyaluminum chloride (PAC) and polyacrylamide (PAM) can be added to the inlet zone 11 via a dosing pump. The mixer moderately agitates the water flow at the initial stage of raw water entry, achieving water homogenization and rapid mixing of the chemicals, while preventing the deposition of heavy particles near the inlet. The agitated water then passes through a third, inclined guide plate 105 for buffering and guidance, forming a stable and uniform inlet flow pattern, effectively avoiding impact on the sedimentation zone 12 or blockage of the inlet channel 9. This synergistic "upper agitator, lower guide" structure not only enhances the equipment's adaptability to complex or fluctuating inlet water but also strengthens the stability and reliability of the overall treatment process.

[0062] In some embodiments, refer to Figure 2 , Figure 5 and Figure 6 As shown, the filter assembly 3 includes multiple filter units 31, which are arranged side by side in the water production zone 13.

[0063] This embodiment of the application, by setting multiple filtration units 31 within the water production zone 13, not only significantly improves the overall filtration throughput and treatment stability, but also effectively reduces the operating load of individual units, delays clogging, and extends service life. Furthermore, even if some units require maintenance or replacement, the remaining units can still ensure continuous water production, guaranteeing that the effluent water quality consistently meets standards.

[0064] In some embodiments, refer to Figure 6 and Figure 7 As shown, the filtration unit 31 includes a water collection box 311, multiple filters 312, multiple backwash main pipes 313, a water collection pipe 314, and a control valve 315. Each filter 312 is installed on the water collection box 311 along the height direction Z of the housing 1. The bottom of the filter 312 is provided with a filter inlet 3121, and the top of the filter 312 is provided with a filter outlet 3122. The filter inlet 3121 is connected to the sedimentation zone 12, and the filter outlet 3122 is connected to the product water zone 13. Each filter 312 is connected to the water collection box 311 via the backwash main pipe 313, which extends along the height direction Z. The filtration assembly 3 also includes a backwash pump (not shown in the figure), which is connected to the water collection box 311 via the water collection pipe 314. The control valve 315 is located in the water collection pipe 314.

[0065] As an example, the filter assembly 3 includes a mounting base 316 and multiple water collection covers. The mounting base 316 is connected between the side wall of the housing 1 and the first partition 103, thereby enclosing and forming a water production area 13. The multiple water collection covers are arranged side by side on the mounting base 316, thereby forming a water collection box 311 for multiple filter units 31. In addition, the mounting base 316 is provided with a positioning hole 317. The filter 312 passes through the water collection box 311, and the filter inlet 3121 communicates with the positioning hole 317, which is connected to the suspended filter media 2 area in the sedimentation area 12 below. Under the action of buoyancy and the rotation of the rotating impeller 4, the supernatant after preliminary filtration by sedimentation and suspended filter media 2 can enter the filter 312 through the filter inlet 3121 for secondary filtration. The filtered clean water flows into the water production area 13 through the filter outlet 3122.

[0066] Each backwash main pipe 313 corresponds to a filter 312, extending along the height direction Z, connecting the filter 312 to the water collection box 311, forming a backwash water flow channel. A water collection pipe 314 connects the backwash pump to the water collection box 311. A control valve 315 is located in the water collection pipe 314, used to independently start and stop the backwash process of each filter unit 31. The control valve 315 can be a solenoid valve or other valve body. The backwash pump uses the treated purified water from the production water zone 13 as the backwash water source to achieve backwashing.

[0067] Specifically, during backwashing, the backwash pump draws clean product water from the product water zone 13, which enters the collection box 311 through the collection pipe 314 and control valve 315. Then, it enters the filter 312 from bottom to top through the backwash main pipe 313, where the internal filter media (such as filter membranes and filter cartridges) are backwashed to remove and trap pollutants. The backwash wastewater is discharged from the bottom inlet of the filter 312 and falls directly onto the suspended filter media 2 below, which also plays an auxiliary role in rinsing the surface deposits. The detached particles carried in the backwash wastewater and the pollutants washed off by the suspended filter media 2 enter the sedimentation zone 12 together. Under the action of the circulating flow field generated by the rotating impeller 4, these high-concentration particles collide, flocculate, and adhere rapidly to form high-density macroflocculations, which accelerate sedimentation and are discharged to the sludge discharge zone 14, realizing the integrated closed-loop treatment of "backwashing, rinsing, flocculation, sedimentation, and sludge discharge" to avoid secondary pollution.

[0068] It is understood that, in this embodiment of the application, the backwashing start and stop of each filter unit 31 can be independently controlled by the control valve 315, supporting backwashing of single, multiple, or all units as needed. Cleaning can be performed in rotation without shutting down the system, ensuring continuous water production, improving backwashing efficiency, and reducing water and energy waste. Furthermore, using the equipment's own purified water as the backwash water source eliminates the need for external clean water or chemical cleaning agents, reducing operating costs. In addition, the backwash water ultimately flows back to the sedimentation zone 12 to participate in sludge flocculation, achieving internal recycling of water resources and pollutants.

[0069] Therefore, the embodiments of this application not only significantly extend the service life of the filter component 3 and the suspended filter media 2, avoiding frequent replacement, but also make full use of the equipment's self-produced purified water to complete the cleaning, improve water resource utilization efficiency, and enhance sludge treatment efficiency.

[0070] In some embodiments, refer to Figure 6 As shown, the filter unit 31 also includes multiple backwash branch pipes 318. Each backwash main pipe 313 is connected to the corresponding filter 312 through the backwash branch pipe 318. The backwash branch pipe 318 has a first end 3181 and a second end 3182. The first end 3181 is connected to the backwash main pipe 313, and the second end 3182 is connected to the filter 312. The first end 3181 is higher than the second end 3182.

[0071] Each filter 312's sidewall can be connected to the corresponding backwash main pipe 313 via one or more backwash branch pipes 318, with the first end 3181 of the backwash branch pipe 318 being higher than the second end 3182, forming a horizontally inclined downward guiding structure. This inclined guiding structure allows the backwash water flow to have a certain degree of gravity acceleration and directional guidance before entering the filter 312.

[0072] Backwash water is transported upward from the water collection box 311 through the backwash main pipe 313 and enters the first end 3181 at the high position. Then it flows into the filter 312 along the inclined downward backwash branch pipe 318. Due to the height difference and pipeline turning, the backwash water flow can be guided to form a swirling flow field from top to bottom when entering the filter 312, which enhances the ability to flush and remove pollutants inside the filter media and improves the uniformity and thoroughness of backwashing.

[0073] In some embodiments, the tilt angle of the backwash branch pipe 318 can be 10° to 30°. This tilt angle is the angle between the backwash branch pipe 318 and the horizontal direction.

[0074] Optionally, the tilt angle can be 15°.

[0075] In some embodiments, a filter screen (not shown) is provided between the filter inlet 3121 and the suspended filter media 2.

[0076] Specifically, the filter screen can cover the bottom of the positioning hole 317 of the mounting base plate 316, located between the bottom inlet of the filter 312 and the suspended filter media 2, allowing the supernatant to pass freely, but preventing the suspended filter media 2 from entering the interior of the filter 312.

[0077] Alternatively, the filter screen can be stainless steel wire mesh, engineering plastic grating, or perforated plate, etc.

[0078] This embodiment of the application, by setting a filter screen between the inlet of filter 312 and the suspended filter media 2, can effectively prevent the suspended filter media 2 from floating into the interior of filter 312 due to water flow disturbance or impeller action, avoiding the risk of clogging caused by this, and ensuring the long-term stable operation and deep filtration efficiency of filter 312. In addition, in conjunction with the backwashing structure, passive flushing of the filter screen can also be achieved, further enhancing the self-maintenance capability of the equipment. This design significantly improves the equipment's anti-clogging properties, operational continuity, and effluent water quality stability.

[0079] In some embodiments, refer to Figure 2 As shown, the first partition 103 has an extension portion extending beyond the mounting base plate 316 along the height direction Z. This extension portion can be enclosed with the side wall of the housing 1 and the mounting base plate 316 to form an area for placing the suspended filter media 2. This filter media area is located below the water production area 13.

[0080] In some embodiments, refer to Figure 2 As shown, a mud collecting plate 107 is provided in the sedimentation zone 12. The mud collecting plate 107 is located at the bottom of the rotating impeller 4 and is connected to the mud discharge zone 14.

[0081] A second baffle 108 is vertically arranged at the bottom left corner of the housing 1 to form a sludge discharge area 14 with a top opening between it and the housing 1. The sludge collecting plate 107 can be an inclined or arc-shaped guide plate adapted to the circumference of the rotating impeller 4, and one side of it can be connected to the top side of the second baffle 108.

[0082] The macro-flocculation formed by the interception of suspended filter media 2 and the flocculation promoted by the rotating impeller 4 settles to the bottom of the sedimentation zone 12 under gravity and falls onto the surface of the sludge collection plate 107. Driven by the bottom flow field generated by the rotating impeller 4, it automatically slides along the surface of the sludge collection plate 107 and is concentrated and guided into the sludge discharge zone 14, achieving efficient and continuous automatic sludge discharge. This structure effectively avoids sludge accumulation and caking at the bottom of the sedimentation zone 12, significantly improving the stability of solid-liquid separation. At the same time, the sludge collection plate 107, the rotating impeller 4, and the sludge discharge zone 14 form an integrated sludge discharge path of "sedimentation, collection, pushing, and discharge", eliminating the need for additional sludge scraping or suction devices, further simplifying the equipment structure and reducing energy consumption and maintenance costs.

[0083] In some embodiments, a sludge concentration detector (not shown in the figure) is provided in the sedimentation zone 12, and the sludge concentration detector is located at the bottom of the suspended filter media 2.

[0084] Optionally, the integrated water treatment equipment may also include a controller (not shown in the figure) mounted on the housing 1. The controller can be connected to components such as the motor 5, auger, control valve 315, backwash pump, and sludge concentration detector to achieve overall machine control. The controller can control the start / stop, rotation direction, and speed of the motor 5, thereby controlling the rotation of the impeller 4. The controller can also control the start / stop, rotation direction, and speed of the auger. Furthermore, the controller can control the on / off state of the control valve 315, the start / stop and speed of the backwash pump, etc.

[0085] The sludge concentration detector can monitor the sludge concentration in the bottom area of ​​the suspended filter media 2 in real time and feed it back to the controller. The controller compares it with the preset concentration. If the sludge concentration at this location is greater than the preset concentration, the flocs that have not settled in time will accumulate at the bottom of the suspended filter media 2, forming a sludge layer, which will hinder water flow, reduce filtration efficiency, and even cause the filter media to clump together. At this time, the controller can appropriately increase the speed of the rotating impeller 4 to enhance the disturbance, improve the settling efficiency, and allow the sludge to settle downwards, thereby reducing the accumulation of sludge at the top. In addition, the auger can be activated to discharge sludge in time to avoid excessive accumulation of sludge inside, until the detected sludge concentration is less than or equal to the preset concentration.

[0086] Therefore, in this embodiment, when the sludge concentration is detected to be too high, the controller can be activated in a timely manner to adjust the rotation speed of the impeller 4 and initiate sludge discharge strategies, effectively preventing sludge from accumulating and agglomerating under the filter media, thus avoiding clogging of the filter media pores and affecting water flow distribution and filtration performance. This design not only ensures the long-term stable adsorption and retention effect of the suspended filter media 2, but also improves the intelligence and self-adaptive capabilities of the entire machine, significantly enhancing the stability and reliability of the equipment.

[0087] In some embodiments, a water quality sensor (not shown) is provided in the water production zone 13.

[0088] The water quality sensor can detect water quality parameters within the production water zone 13, including turbidity, chemical oxygen demand (COD), pH, and conductivity. Specific configurations can be tailored to individual needs.

[0089] The water quality sensor can be connected to the controller to feed back the detected water quality parameters. The controller compares these parameters with preset values ​​to determine whether the water quality meets the standards. For example, if the turbidity of the water is greater than the preset turbidity, it indicates that the water quality does not meet the standards. In this case, the rotation speed of the impeller 4 can be appropriately increased to enhance the flocculation flow field, accelerate the collision of fine particles to form macro-flocs, improve sedimentation efficiency, and strengthen solid-liquid separation, thereby reducing impurities entering the production water zone 13. Furthermore, the sludge discharge frequency of the screw conveyor can be increased or the sludge discharge time can be extended to avoid sludge backflow and affecting water quality. In addition, the backwashing frequency of the backwash pump can be increased or the backwashing time can be extended to improve the throughput and filtration accuracy, avoid water quality deterioration caused by filter element clogging, and thus ensure that the effluent water quality meets the standards.

[0090] The above are merely preferred embodiments of this application and are not intended to limit the embodiments of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. An integrated water treatment device, characterized in that, include: The shell has an internal water inlet zone, a sedimentation zone, a product water zone, and a sludge discharge zone. The water inlet zone and the product water zone are arranged side by side at the top of the sedimentation zone, and the sludge discharge zone is located at the bottom of the sedimentation zone. The water inlet zone, the product water zone, and the sludge discharge zone are all connected to the sedimentation zone. Suspended filter media is disposed at the top of the sedimentation zone and below the product water zone; The filter assembly is located within the water production area; A rotating impeller is rotatably disposed within the sedimentation zone and located below the suspended filter media.

2. The integrated water treatment equipment according to claim 1, characterized in that, A water inlet channel is provided between the water inlet zone and the sedimentation zone, extending circumferentially along the rotating impeller. The water inlet channel has an inlet connecting the water inlet zone and an outlet connecting the sedimentation zone. The outlet faces the suspended filter media, and the water inlet direction of the water inlet channel is opposite to the rotation direction of the rotating impeller.

3. The integrated water treatment equipment according to claim 2, characterized in that, The shell is provided with a first guide plate and a second guide plate inside. The first guide plate and the second guide plate are located between the water inlet area and the sedimentation area, and are staggered relative to each other in the height direction of the shell to form the water inlet channel between the first guide plate and the second guide plate.

4. The integrated water treatment equipment according to claim 1, characterized in that, The water inlet area is provided with a third guide plate arranged horizontally. The third guide plate has a connecting side and a free side. The connecting side is connected to the side wall of the shell, and the free side is lower than the connecting side.

5. The integrated water treatment equipment according to any one of claims 1 to 4, characterized in that, The filtration assembly includes multiple filtration units, which are arranged side by side in the water production area.

6. The integrated water treatment equipment according to claim 5, characterized in that, The filtration unit includes a water collection box, multiple filters, multiple backwash main pipes, a water collection pipe, and a control valve. Each filter is installed through the water collection box along the height direction of the housing, and each filter has a filter inlet at the bottom and a filter outlet at the top. The filter inlet is connected to the sedimentation zone, and the filter outlet is connected to the product water zone. Each filter is connected to the water collection box via the backwash main pipe, which extends along the height direction. The filter assembly also includes a backwash pump, which is connected to the water collection box via the water collection pipe, and the control valve is located in the water collection pipe.

7. The integrated water treatment equipment according to claim 6, characterized in that, The filtration unit also includes multiple backwash branch pipes, each of the backwash main pipes being connected to the corresponding filter via the backwash branch pipe. Each backwash branch pipe has a first end and a second end, the first end being connected to the backwash main pipe and the second end being connected to the filter, with the first end being higher than the second end.

8. The integrated water treatment equipment according to claim 6, characterized in that, A filter screen is provided between the filter inlet and the suspended filter media.

9. The integrated water treatment equipment according to any one of claims 1 to 4, characterized in that, The sedimentation zone is equipped with a sludge collecting plate, which is located at the bottom of the rotating impeller and connected to the sludge discharge zone.

10. The integrated water treatment equipment according to any one of claims 1 to 4, characterized in that, The sedimentation zone is equipped with a sludge concentration detector, which is located at the bottom of the suspended filter media. And / or, a water quality sensor is provided in the water production area.

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