Umbrella-shaped curved surface filter plate assembly for high-concentration suspended solids

Abstract

The utility model discloses an umbrella-shaped curved surface filter plate assembly for high-concentration suspended solids, which comprises a filter assembly body, a support plate, side walls extending to two sides and surrounding umbrella-shaped curved surface filter plates are mounted in the filter assembly body, and a plurality of groups of umbrella-shaped curved surface filter plates are uniformly mounted on the side walls of the filter assembly body. A sewage inlet assembly is installed in the wastewater pool body, one end of the sewage inlet assembly flows to a first circle of umbrella-shaped curved surface filter plate along a sewage pipe after actual water inflow, the filter assembly body comprises a filter assembly base, a first circle of filter umbrella-shaped blocks are arranged on the inner wall of one side of the filter assembly base, and a second circle of filter umbrella-shaped blocks are arranged on the inner wall of the other side of the filter assembly base. A supporting block is integrally formed on the filtering assembly base. Compared with the prior art, a plurality of groups of curved surface filter plate structures which are not completely the same and the design of the flow guide pipes are used, so that a good synergistic effect is achieved, and the shock resistance and the stability of filtering of the high suspended matters are also improved.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically for industries involving high-concentration suspended solids (SS) such as leachate from domestic waste, papermaking wastewater, pig farm wastewater, and manure wastewater. The invention relates to a filter assembly for treating high-concentration suspended solids in wastewater. Background Technology

[0002] The first step in wastewater treatment is usually the removal of suspended solids (SS), which is achieved through physical filtration and chemical flocculation sedimentation. However, in reality, for wastewater with high concentrations of SS, ordinary screens or grids are often insufficient for effective removal in a single step. If SS is not removed at the source, it can easily clog downstream pipes, pumps, anaerobic systems, and aeration systems, affecting pump operation, aeration efficiency, and ultimately, the final wastewater quality.

[0003] When high-concentration suspended solids (SS) wastewater enters the equalization tank, taking municipal solid waste leachate as an example, the common SS concentration is around 2000 mg / L, generally not exceeding 5000 mg / L. The high concentration of SS in the wastewater easily clogs the screen outlet. Furthermore, due to the high fluidity of SS, sludge easily accumulates in the dead corners or on the inner walls of the pipes after prolonged use. If not cleaned regularly, these deposited SS particles can easily clog the water pumps. In actual engineering projects, one pump is used and one is kept on standby at the equalization tank outlet. The pumps often need to be disassembled every 1-2 days to clean the clogged internal structures. Therefore, it is essential to solve the SS clogging problem at the front end of the wastewater treatment process; otherwise, the entire wastewater treatment system will operate extremely unstablely.

[0004] Therefore, in view of the problems that exist in practice with the above-mentioned high-concentration suspended solids wastewater, it is necessary to provide a new wastewater treatment enhanced filtration component based on the results of engineering tests.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a high-concentration suspended solids umbrella-shaped curved surface filter plate assembly, which can solve the problems mentioned in the background art.

[0007] To achieve the above object, the technical solution provided by a specific embodiment of the present utility model is as follows: A high-concentration suspended solid umbrella-shaped curved filter plate assembly, including a filter assembly body, a support plate, side walls extending to both sides, and a surrounding umbrella-shaped curved filter plate are installed inside the filter assembly body. Multiple groups of umbrella-shaped curved filter plates are evenly installed on the side walls of the filter assembly body. A sewage inlet component is installed inside the waste water tank body. After actual water inlet at one end of the sewage inlet component, it flows along the sewage pipe to the first circle of umbrella-shaped curved filter plates;

[0008] Preferably, the filter assembly body includes a filter assembly base. There is a first circle of filter umbrella-shaped blocks (successively the second circle of umbrella-shaped blocks, the third circle of umbrella-shaped blocks) on one inner wall of the filter assembly base. The filter assembly base is integrally formed with a support block. The filter umbrella-shaped blocks are located above the support block. The support block is provided with a first circle of umbrella-shaped curved filter plates, successively the second circle of umbrella-shaped curved filter plates, the third circle of umbrella-shaped curved filter plates, etc. And the vertical height (H1) of the first circle of umbrella-shaped curved filter plates, the vertical height (H2) of the second circle of umbrella-shaped curved filter plates to the vertical height (H3) of the third circle of umbrella-shaped curved filter plates increase successively, that is, H1 < H2 < H3 < … < H N, The horizontal spacing between the first to third umbrella-shaped curved filter plates increases non-uniformly in turn.

[0009] [[ID=⑧]]Preferably, the high-concentration suspended solid umbrella-shaped curved filter plate assembly includes side walls extending and opening on both sides. One end of the side walls extending and opening on both sides is fixedly connected to the filter assembly base, and the other two ends are fixedly connected to one end of the umbrella-shaped curved filter plate. The included angle formed by the side walls extending and opening on both sides is preferably between 90° and 150°.

[0010] Preferably, when the leachate is selected as the influent according to the experimental parameters and the SS is less than 5000 mg / L, the relationship between the influent flow rate Q and the umbrella-shaped curved surface height (H1) is: Q / H1 = (12.98 - 30), where the unit of Q is 3 m 2 / h, the unit of H1 is m, and the ratio result is

[0011] Preferably, the horizontal spacings of the multi-layer umbrella-shaped curved filter plates are C1L1, C2L2, C3L3, etc. until (C N L N ), (C1L1) : (C2L2) : (C3L3) : (C N L N = 1 : 2 2 : 3 2 : N 2 .

[0012] Preferably, the vertical heights of the first, second, and third umbrella-shaped curved surface filter plates are respectively the vertical heights of the first ring of umbrella-shaped curved surface filter plates (H1), the second ring of umbrella-shaped curved surface filter plates (H2), the third ring of umbrella-shaped curved surface filter plates (H3), and the vertical heights of the sequentially arranged umbrella-shaped curved surface filter plates (H...). N Starting from the first umbrella-shaped curved filter plate, the height of the curved filter plate gradually increases, with the following relationship: H2:H1=H3:H2=H N H n-1 = (1.3-1.5).

[0013] Preferably, the pore diameters of the first, second, and third rings of umbrella-shaped curved filter plates are Φ1, Φ2, Φ3, etc., respectively. Up to Φn, the pore size is Φ1>Φ2>Φ3>…>Φn, where Φ n =35 (1-20%) n-1 +a, where n is a natural number, a takes values ​​from 1 to 5, and the value of a is an empirical value that should be adjusted according to the actual situation. The unit is mm.

[0014] Preferably, the support block has an umbrella-shaped area formed by the first ring of umbrella-shaped curved filter plates, the support plate, and the side walls extending on both sides, with a sewage pipe inlet at a certain angle. The sewage flows directly to the first ring of umbrella-shaped curved filter plates. The angle (α) between the sewage pipe inlet and the horizontal line is preferably between 30° and 60°.

[0015] The outstanding effect of this invention is that the umbrella-shaped curved filter plate, with its varying heights, spacing, and pore sizes, significantly improves the separation efficiency of high-concentration suspended solids wastewater. Simultaneously, the invention employs a flow-guiding pipeline design, allowing the mixed liquid containing floating matter, sludge, plastics, and wastewater to have a larger contact area, shorter contact time, and lower head loss compared to traditional filters after colliding with the first ring of umbrella-shaped curved filter plates. This optimizes hydraulic conditions and reduces the sedimentation effect of high-concentration suspended solids at the bottom of the tank, enabling suspended solids or particles in the mixed liquid to aggregate, compress, and sink along the flow-guiding plates after contacting the first ring of filter plates.

[0016] Similarly, after passing through the first ring of umbrella-shaped curved filter plates, the high-concentration suspended solids wastewater primarily removes large particles of suspended solids (SS), resulting in a significant initial decrease in SS content. Upon entering the second ring of umbrella-shaped curved filter plates, the remaining smaller suspended solids are further intercepted. At this point, the interception resistance increases compared to the first ring, and so on, gradually reducing the amount of suspended solids in the wastewater. The structural design of this invention significantly accelerates the flow of wastewater through each ring of filter plates, improving the solid-liquid separation effect. It also helps protect the pump from blockage and the microbial community within the subsequent reactor, minimizing filtration clogging. Furthermore, this invention utilizes multiple sets of slightly different curved filter plate structures and a flow guide design, achieving a good synergistic effect and enhancing the impact resistance and stability of high-suspended solids filtration.

[0017] In summary, the structural design of this invention conforms to the principles of fluid mechanics, has excellent solid-liquid separation effect, strong resistance to the impact of high suspended solids, and effectively alleviates the problem of clogging in the equalization tank and subsequent biological treatment tank, thus having high value for field application.

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a side view of the present invention.

[0021] Figure 3 This is a schematic diagram of the side height of the filter plate of this utility model.

[0022] Figure 4 The three views of this utility model are shown below.

[0023] Wherein: C1, the first ring of umbrella-shaped curved filter plates; C2, the second ring of umbrella-shaped curved filter plates; C3, the third ring of umbrella-shaped curved filter plates; H1, the vertical height of the first ring of umbrella-shaped curved filter plates; H2, the vertical height of the second ring of umbrella-shaped curved filter plates; H3, the vertical height of the third ring of umbrella-shaped curved filter plates, and so on; Φ1, the aperture of the first ring of umbrella-shaped curved filter plates; Φ2, the aperture of the second ring of umbrella-shaped curved filter plates; Φ3, the aperture of the third ring of umbrella-shaped curved filter plates, and so on; CILI, the distance between the dot and the first ring of umbrella-shaped filter plates; C2L2, the distance between the first and second rings of umbrella-shaped curved filter plates; C3L3, the distance between the second and third rings of umbrella-shaped curved filter plates. Detailed Implementation

[0024] This invention discloses a device for solid-liquid separation using multiple curved filter plates in wastewater pretreatment for high-concentration suspended solids (SS).

[0025] like Figure 1 As shown, a solid-liquid separation device with an umbrella-shaped multi-curved surface filter plate has a wastewater inlet pipe fixedly located at the upper end of the component. The wastewater enters the filter component from the left, with the wastewater inlet pipe at a 45° angle to the horizontal line, spreading outwards along the umbrella-shaped dot. Here, the inlet flow rate is Q = 10m³. 3 Taking / h as an example, the relationship between the influent flow rate Q and the height of the umbrella-shaped curved surface (H1) is: Q / H1=(12.98--30), where Q is in meters. 3 / h, H1 is in meters, and the ratio result is in meters. 2 The critical value H1 was calculated to be 0.33m based on field test data. This height is sufficient to meet a flow rate of Q=10m³ / h. 3 When the SS concentration is below 5000 mg / L, the wastewater will not overflow the first ring of umbrella-shaped curved filter plates.

[0026] The first large-particle-size (SS) filter is passed through the first ring of umbrella-shaped curved filter plates C1. The diameter (Φ1) is about 30-40 mm. In the experiment, 30%-60% of suspended solids can be removed. The characteristics of this layer of filtration are the lowest hydraulic resistance and the fastest flow rate. Taking landfill leachate as an example, the most common suspended solids are plastics, branches and leaves, metal pieces and paper pieces.

[0027] After passing through the second ring of umbrella-shaped curved filter plates C2, since Φ2 is about 20% smaller than Φ1, the resistance of the sewage containing suspended solids increases as it flows through the second ring of umbrella-shaped curved filter plates. However, L2L2 is greater than C1L1, and H2>H1. The result of this design is that the second filtration has sufficient hydraulic retention time, and the filtration rate is relatively slow. Taking domestic waste leachate as an example, this second layer of filtration mainly removes hair, medium-sized particles, coarse fibers, etc.

[0028] After passing through the third ring of umbrella-shaped curved filter plates C3, since Φ3 is about 20% smaller than Φ2, the resistance of sewage containing suspended solids is greater when flowing through the third ring of umbrella-shaped curved filter plates. However, L3L3 is greater than C2L2, and H3>H2. As a result of this design, the third filtration has a longer hydraulic retention time than the second filtration, and the filtration rate is relatively slower. Taking domestic waste leachate as an example, this third layer of filtration mainly removes hair, fine particulate matter, fine sand, etc.

[0029] This invention employs multiple sets of umbrella-shaped curved filter plates, significantly improving the separation efficiency of high-concentration suspended solids (SS). The booster pump inside the equalization tank after filtration is no longer frequently clogged. Furthermore, the diverse design of different sets of curved filter plates, varying spacing, and different pore sizes allows for a larger contact area between the wastewater and the filter plates after the upward flow of the mixture containing impurities, sludge, and particulate matter. This facilitates easier dispersion and filtration of suspended solids and fine flocs, reduces head loss, and optimizes hydraulic conditions. It also enhances solid-liquid separation during the entry of high-concentration SS wastewater into the equalization tank, enabling impurities, suspended solids, sludge flocs, or sand particles in the mixture to sink along the curved filter plates after contact, achieving rapid separation of wastewater and SS.

[0030] Because the filter employs an umbrella-shaped curved surface design, calculated according to Stokes' formula, this invention's structural design accelerates the return of wastewater residue to the bottom of the support plate, improving solid-liquid separation and, to a certain extent, protecting the subsequent water pump from blockage. This, in turn, ensures the safety of subsequent pipelines and the biological treatment tank, minimizing clogging. Furthermore, this invention utilizes a wastewater pipe inlet guiding design, minimizing energy consumption between the wastewater and the curved filter plate, providing excellent synergy and buffering, and reducing wear on the umbrella-shaped curved filter plate, thereby extending the service life of the filtration assembly. In summary, this invention features a reasonable structure, excellent filtration effect, a certain degree of buffering capacity, and effectively alleviates the problem of equalization tank clogging. It is highly practical for high-concentration suspended solids (SS) wastewater and has genuine market demand in the future.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit and essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high concentration suspended solids umbrella curved surface filter plate assembly characterized by, Including filter assembly body, support plate, side wall and umbrella-shaped curved filter plate are installed in the filter assembly body, the side wall of the filter assembly body is uniformly provided with a plurality of umbrella-shaped curved filter plates, the wastewater pool body is provided with a sewage inlet assembly, after the actual water inlet, the sewage inlet assembly flows to the first circle umbrella-shaped curved filter plate along the sewage pipe.

2. A high concentration suspended solids umbrella-shaped curved filter plate assembly according to claim 1, wherein, The filter assembly body comprises a filter assembly base, a first circle of filter umbrella-shaped blocks is arranged on the inner wall of one side of the filter assembly base, the filter assembly base is integrally formed with a supporting block, the filter umbrella-shaped blocks are located above the supporting block, a first circle of umbrella-shaped curved filter plates (C1), a second circle of umbrella-shaped curved filter plates (C2) and a third circle of umbrella-shaped curved filter plates (C3) are arranged on the supporting block, and the vertical heights of the first circle of umbrella-shaped curved filter plates (H1), the second circle of umbrella-shaped curved filter plates (H2) and the third circle of umbrella-shaped curved filter plates (H3) are sequentially increased, that is, H1 , The horizontal spacing of the first to third umbrella-shaped curved filter plates is sequentially and non-uniformly increased.

3. A high concentration suspended solids umbrella-shaped curved filter plate assembly according to claim 2, wherein, The high-concentration suspended solids umbrella-shaped curved filter plate assembly includes two side walls extending to both sides, one end of the two side walls is fixedly connected to the filter assembly base, and the other two ends are fixedly connected to one end of the umbrella-shaped curved filter plate, and the two side walls extend to both sides.

4. A high concentration suspended solids umbrella-shaped curved filter plate assembly according to claim 3, wherein, The parameter selection is the relationship between the water flow Q and the vertical height (H1) of the first circle umbrella-shaped curved filter plate under the condition that the leachate inlet water and the suspended solids are less than 5000 mg / L: Q / H1=(12.98--30) where Q is in units of m 3 / h, H1 is in units of m, and the ratio is m 2 / h.

5. A high concentration suspended solids umbrella-shaped curved filter plate assembly according to claim 4, wherein, The horizontal spacing of the multiple sets of umbrella-shaped curved filter plates is, in sequence, the distance between the dot and the first ring of umbrella-shaped filter plates (C1L1), the distance between the first and second rings of umbrella-shaped curved filter plates (C2L2), the distance between the second and third rings of umbrella-shaped curved filter plates (C3L3), and so on up to (C... N L N ), (C1L1): (C2L2): (C3L3): (C N L N =1:2 2 3 2 :N 2 .

6. A high concentration suspended solids umbrella-shaped curved filter plate assembly according to claim 5, wherein, The vertical height of the first circle of umbrella-shaped curved filter plate (H1), the vertical height of the second circle of umbrella-shaped curved filter plate (H2), the vertical height of the third circle of umbrella-shaped curved filter plate (H3), and the vertical height of the umbrella-shaped curved filter plate (H N ) gradually increase, and the relationship is H2:H1=H3:H2=H N :H n-1 =(1.3-1.5).

7. A high concentration suspended solids umbrella-shaped curved filter plate assembly according to claim 6, wherein, The aperture of the first circle umbrella-shaped curved filter plate (Φ1), the aperture of the second circle umbrella-shaped curved filter plate (Φ2), the aperture of the third circle umbrella-shaped curved filter plate, and the aperture of the Nth circle umbrella-shaped curved filter plate are Φ1>Φ2>Φ3>…>Φn; where Φ n = 35 (1 - 20%) n-1 + a, n is a natural number, a has a value of 1-5, the value of a is an empirical value, which is adjusted according to the actual situation, unit: mm.

8. The high concentration suspended solids umbrella-shaped curved filter plate assembly of claim 1, wherein, The support block is provided with a first circle umbrella-shaped curved filter plate (C1), a support plate, a side wall extending to both sides, an umbrella-shaped area surrounded by the support plate, the support plate, and the side wall extending to both sides, a sewage pipe drainage inlet with a certain angle, and a sewage flow directly flowing to the first circle umbrella-shaped curved filter plate (C1). The angle (α) between the sewage pipe drainage inlet and the horizontal line is between 30° and 60°.

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