An assembled upflow medium filter device

Abstract

The invention discloses an assembled upflow medium filter device, comprising a box, a baffle plate is arranged in the inner cavity of the box, the baffle plate divides the inner cavity of the box into a primary treatment chamber and a secondary treatment chamber, the water inlet side of the box is connected to a water inlet pipe, and the water outlet side of the box is connected to a water outlet pipe; a slag separation component and an upflow medium filter are arranged in the secondary treatment chamber, the slag separation component comprises a slag separation outer frame, an oil absorption rod and a slag separation fence, the slag separation fence is suspended and fixed in the box from top to bottom, the slag separation outer frame is arranged on the side of the slag separation fence close to the baffle plate, the oil absorption rod is surrounded by the slag separation outer frame, the upflow medium filter is arranged between the slag separation fence and the water outlet side of the box, and the upflow medium filter is composed of a medium filter frame and a medium filler. The device can achieve runoff control, retention and storage of surface water, reduce peak flow, reduce non-point source pollution, improve the water quality standard of outlet water, and recycle rainwater, and has low maintenance cost.

Description

Technical Field

[0001] The invention relates to the technical field of rainwater or sewage treatment, and in particular to an assembled upflow medium filtering device for rainwater or sewage treatment. Background Art

[0002] my country is experiencing rapid urbanization, and while urban development has achieved remarkable success, it also presents challenges such as high development intensity and an abundance of hard-surfaced pavements. In particular, the construction of building roofs, roads, and ground surfaces has resulted in excessive hardening of the underlying surface, altering the city's natural ecological foundation and hydrological characteristics. Over 70% of rainfall is discharged as runoff, leading to flooding after heavy rain and subsequent drought in cities. This has led to deteriorating water ecology, water resource shortages, water pollution, and a lack of water security, severely impacting people's livelihoods and the smooth operation of cities. The country strongly advocates the development of sponge cities, which naturally store, infiltrate, and purify water. Through sponge city development, 70% of rainfall can be absorbed and utilized locally, addressing issues such as urban waterlogging, rainwater collection and utilization, and the treatment of black and odorous water bodies.

[0003] Existing rainwater or sewage treatment systems are limited in scope, inconvenient to assemble, and have poor functionality. They are not ideal for storing and purifying rainwater or sewage, and are cumbersome to maintain and clean, resulting in high ongoing maintenance costs. Therefore, to strengthen urban stormwater runoff source control and urban rainfall surface pollution control, and to improve the quality of urban water environments, it is necessary to develop a multifunctional filtration and treatment system that is widely applicable, easy to assemble and maintain, and can effectively store and purify rainwater or sewage. Summary of the Invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide an assembled upflow medium filtration device, which utilizes the synergistic effects of gravity sedimentation, oil and slag separation, and medium filtration, combined with the characteristics of the upflow structure, to form an integrated modular retention system, and at the same time has a passive self-cleaning backwash function, which minimizes the subsequent maintenance cost of the device, and can achieve runoff control, retention and storage of surface water, reduce peak flow, reduce non-point source pollution, improve effluent water quality standards, and rainwater recycling and utilization.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] The filter press of the invention is connected with the filter press of ...

[0007] Furthermore, the height difference between the top of the baffle and the top inner wall of the box body is 80 cm, and the height difference between the top of the slag barrier and the top inner wall of the box body is 25 cm.

[0008] Furthermore, the slag separation outer frame is a PP, aluminum alloy or stainless steel frame, and the top of the slag separation outer frame is a hinged structure, so that the top of the slag separation outer frame can be opened or closed, and the oil absorption rod can be taken in and out.

[0009] Furthermore, the bottom end of the slag partition railing is 30 cm lower than the top end of the baffle, and the bottom end of the slag partition outer frame is 10 cm lower than the top end of the baffle.

[0010] Furthermore, there are multiple oil-absorbing rods, which are arranged vertically on the slag separation frame, and the oil-absorbing rods can float up and down with the change of water level.

[0011] Furthermore, the media filter frame is a PP, aluminum alloy or stainless steel frame, and the media filter frame is a rectangular fence structure. The top of the media filter frame has two doors, and the doors can be opened to take out and put in the media filler.

[0012] Furthermore, the bottom of the medium filter frame is 10 cm higher than the bottom end of the slag barrier.

[0013] Furthermore, the top of the media filter frame is flush with the lowest end of the pipe wall of the water outlet pipe.

[0014] Furthermore, a drainage filter located below the end of the upflow medium filter is installed on the water outlet side of the box.

[0015] Furthermore, the medium filler in the medium filter frame is ecological porous fiber cotton.

[0016] Furthermore, a maintenance manhole is provided on the top of the box body, and a maintenance cover can be provided on the maintenance manhole; when performing maintenance, the maintenance cover is opened and the maintenance personnel can inspect the device through the maintenance manhole.

[0017] Beneficial effects of the present invention:

[0018] This assembled upflow media filter device adopts a dual-chamber separation design. The primary treatment chamber's main function is primary sedimentation, which uses gravity to precipitate and intercept large particles of impurities or garbage in the water to reduce interference with subsequent treatment processes and media clogging problems. At the same time, the primary treatment chamber can also reduce the water flow rate to a certain extent to prevent scouring of structures. The slag separator in the secondary treatment chamber can absorb and intercept most large particles of debris, oil, and grease. The upflow media filter in the secondary treatment chamber is assembled from high-performance adsorption media. As the water level continues to rise, the water flows through the media filler in the form of upflow, thereby filtering out the pollutants and settling them. The water eventually flows out of the outlet pipe and enters the downstream water body or subsequent facilities. When heavy rain occurs or the water volume is large, the water pressure from top to bottom backwashes the upflow media filter, flushing out the impurities adsorbed on it, realizing an automatic backwash function.

[0019] The assembled upflow medium filtration device is based on the characteristics of a dual-chamber structure. It utilizes the synergistic effects of gravity sedimentation, oil and slag separation, and medium filtration, combined with the characteristics of the upflow structure to form an integrated modular retention system. It also has a passive self-cleaning backwash function to minimize the subsequent maintenance costs of the device. It can achieve the goals of runoff control, retention and storage of surface water, reduce peak flood flow, reduce non-point source pollution, improve effluent water quality standards, and recycle rainwater.

[0020] The assembled upflow medium filtration device has the functions of small scale and large processing capacity. Its unique upflow medium filtration technology and self-cleaning backwashing technology make the system processing process extremely efficient, achieving the maximum possible reduction in project cost and maintenance costs while ensuring the storage capacity and effluent water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of an assembled upflow medium filter device of the present invention.

[0022] Figure 2 for Figure 1 Top view of .

[0023] In the figure, 1-box; 11-primary treatment chamber; 12-secondary treatment chamber; 13-manhole; 2-baffle; 3-water inlet pipe; 4-water outlet pipe; 5-slag separator frame; 6-oil absorption rod; 7-slag separator baffle; 8-upflow medium filter; 81-medium filter frame; 82-medium filler; 9-drainage filter. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0025] like Figure 1 and Figure 2 The preferred embodiment of an assembled upflow medium filter device shown in the figure includes a housing 1 with dimensions of 1.2m x 1.2m x 1.5m (length x width x height). A baffle 2, vertically mounted on the bottom of the housing, is disposed within the interior of the housing 1. The baffle 2 divides the interior of the housing 1 into a primary treatment chamber 11 and a secondary treatment chamber 12, which are interconnected. The water inlet side of the housing 1 is connected to an inlet pipe 3 communicating with the primary treatment chamber 11, while the water outlet side of the housing 1 is connected to an outlet pipe 4 communicating with the secondary treatment chamber 12.

[0026] Among them, a slag separator assembly and an upflow medium filter 8 are provided in the secondary treatment chamber 12. The slag separator assembly includes a slag separator outer frame 5, an oil suction rod 6 and a slag separator baffle 7. The slag separator baffle 7 is suspended and fixed in the box body 1. The slag separator outer frame 5 is arranged on the side of the slag separator baffle 7 close to the baffle 2. The slag separator outer frame 5 is a rectangular hollow structure, and the oil suction rod 6 is enclosed in the slag separator outer frame 5. The top of the slag separator outer frame 5 is designed as a hinged structure with a top-opening door, that is, its top is hinged to the vertical side by a hinge. The top of the slag separator outer frame 5 can be opened or closed to realize the removal and placement of the oil suction rod 6; there are multiple oil suction rods 6, and the multiple oil suction rods 6 are arranged vertically in the slag separator outer frame 5. At the same time, the oil suction rods 6 can float up and down with changes in the water level. The bottom end of the slag separator baffle 7 and the bottom end of the slag separator outer frame 5 are both lower than the top of the baffle 2. The upflow media filter 8 is disposed between the slag barrier 7 and the water outlet side of the housing 1. The upflow media filter 8 is composed of a media filter frame 81 and a media filler 82 filled in the media filter frame 81. The outlet pipe 4 is higher than the media filter frame 81. In this embodiment, the media filler 82 is ecological porous fiber cotton. The media filter frame 81 is a rectangular fence structure, and the top of the media filter frame 81 has two doors hinged to the top of the media filter frame 81. The doors are opened to allow access to the ecological porous fiber cotton filler.

[0027] The medium filler is made of ecological porous fiber cotton. Ecological porous fiber cotton is a non-toxic, non-polluting, and sterile inorganic fiber material. It is 100% natural mineral fiber and a 100% recyclable fiber product. It is a sponge material that integrates the functions of "infiltration, retention, storage, purification, use, and drainage" and has excellent sponge application effects. Its characteristics are as follows:

[0028] High water permeability: permeability coefficient 7.0mm / s;

[0029] High water retention: porosity 94%;

[0030] High purification: SS removal rate of 85%, beneficial to plant growth;

[0031] Strong water holding capacity: fast water holding and efficient water release;

[0032] High flexibility: can be cut to any size and laid as needed;

[0033] Strong compressive resistance: 50KPa;

[0034] Non-toxic: The product fiber is soluble and has EUCEB certificate.

[0035] The ecological porous fiber cotton used in the present invention meets the following standards: 1. No carcinogenic risk, the biological half-life of the fiber is less than 40 days, and it has EUCEB non-carcinogenic certification; 2. It has the "CQEF Ecological Porous Fiber Cotton Standard Conformity Certification" certificate issued by the China Building Materials Circulation Association (in compliance with the "T / CBMCA006-2018 Ecological Porous Fiber Cotton" standard); the ecological porous fiber cotton product density is ≥75kg / m3, the density load ratio is ≥0.6, the effective porosity is ≥94%, and the permeability coefficient is ≥0.7cm / s.

[0036] The specific dimensions are designed as follows: the height of the baffle 2 is 70 cm, meaning the height difference between the top of the baffle 2 and the top inner wall of the housing 1 is 80 cm; the distance between the baffle 2 and the water inlet side of the housing 1 is 30 cm; and the height difference between the top of the slag barrier 7 and the top inner wall of the housing 1 is 25 cm. The bottom of the slag barrier 7 is 30 cm lower than the top of the baffle 2, and the bottom of the slag barrier frame 5 is 10 cm lower than the top of the baffle 2. The bottoms of the slag barrier 7 and the slag barrier frame 5 are lower than the top of the baffle 2, creating a height difference. This ensures that water overflowing from the primary treatment chamber 11 can be adsorbed and retained by the slag barrier assembly when entering the secondary treatment chamber 12. The bottom of the media filter frame 81 is 10 cm higher than the bottom end of the slag barrier 7; the top of the media filter frame 81 is flush with the lowest end of the pipe wall of the outlet pipe 4; this design allows an upflow structure to be formed between the slag separator assembly and the upflow media filter. Under the water flow pressure entering the secondary treatment chamber, the upflow structure allows the water to flow from the bottom to the top through the bottom end of the upflow media filter 8, thus forming an upflow, so that the water flow can better and more effectively contact the media filler in the upflow media filter 8, thereby improving the filtering effect.

[0037] The housing 1 can be made of PP, stainless steel, or reinforced concrete; the slag separator frame 5 can be made of PP, aluminum alloy, or stainless steel; and the media filter frame 81 can also be made of PP, aluminum alloy, or stainless steel. The material selection for this device can be tailored to the application scenario and actual requirements. If the device is to be placed under a green belt, where the compressive load is low, the housing can be made of PP or stainless steel. This is lightweight, easy to install, and has simple pipe connections, preventing water leakage. If the device is to be placed under a roadway, where the load requirements are high, a reinforced concrete housing is recommended, which can be hoisted and installed on-site.

[0038] When water enters the upstream pipeline, the initial water volume is small, so it flows through the water inlet pipe 3 into the primary treatment chamber 11 of the tank 1 for initial sedimentation. When the water level rises and passes over the baffle 2, the water overflows into the secondary treatment chamber 12. During the flow, the oil absorption rod 6 in the slag separator assembly and the slag barrier 7 block and intercept the water, which absorbs and intercepts most of the large particles of debris, oil, and grease. It then settles again in the secondary treatment chamber 12 through gravity sedimentation. As the water level continues to rise, the water flows in the form of upflow into the upflow media filter 8. Under the filtering action of the media filler 82, the vast majority of pollutants (total phosphorus, SS, bacteria, etc.) in the water are removed and deposited at the bottom of the tank 1. The purified water is discharged through the outlet pipe 4. When heavy rain or heavy water flow occurs, the water level rises again and overflows. Some water overflows from the top of the slag barrier 7 and flows directly into the outlet pipe 4. At the same time, the water pressure from top to bottom flushes the upflow medium filter 8, flushing out impurities adsorbed on the upflow medium filter 8. The flushed impurities are deposited at the bottom of the box 1, realizing the automatic backwash function and regenerating the medium packing 82. When the water level drops, the entire system returns to the initial treatment process, and the cycle repeats.

[0039] A drain filter 9 is also installed on the water outlet side of the housing 1, located below the end of the upflow media filter 8. There may be a gap between the upflow media filter 8 and the side wall of the housing 1. To prevent a small amount of water from flowing out through the gap between the upflow media filter and the side wall of the housing without being filtered by the media filler, the drain filter 9 can be installed to prevent this part of the water from flowing out.

[0040] The top of the box of the assembled upflow medium filter device is provided with an inspection manhole 13, and an inspection cover can also be provided on the inspection manhole 13; when performing maintenance, the inspection cover is opened and the maintenance personnel can inspect the device through the inspection manhole 13.

[0041] This assembled upflow medium filter device has functions such as runoff control and pollutant reduction. According to the design scale of 1.2m×1.2m×1.5m, it can process 4L / s of sewage and store about 250L of sediment. At the same time, it has a high removal rate of pollutants in water, with a TSS removal rate of 85%, a copper, lead and zinc removal rate of 72-98%, a TP removal rate of more than 70%, an oil and grease removal rate of 90%, and a bacteria (E. coli) removal rate of 68%.

[0042] This assembled upflow medium filter device has a wide range of application scenarios and is suitable for municipal roads, residential areas, renovation of old communities, and commercial plazas. It can be placed at the end of rainwater and sewage pipe branches and at a certain distance on the main pipe. It is particularly suitable for collecting rainwater in drainage ditches in commercial plazas and residential areas. Placing it at the end of the drainage ditch can, on the one hand, retain and store rainwater, and on the other hand, purify rainwater and reduce non-point source pollution. At the same time, it also protects downstream pipelines, reduces pipeline loads, and increases pipeline service life.

[0043] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An assembled upflow medium filter device, Features: The filter press of the embodiment of the present invention is connected with the filter press of the present invention, and the filter press of the present invention is connected with the filter press of the present invention. The height difference between the top of the baffle and the top inner wall of the box body is 80 cm, and the height difference between the top of the slag barrier and the top inner wall of the box body is 25 cm; The bottom end of the slag separation fence is 30 cm lower than the top end of the baffle, and the bottom end of the slag separation outer frame is 10 cm lower than the top end of the baffle.

2. An assembled upflow medium filter device according to claim 1, Features: The slag separation outer frame is a PP, aluminum alloy or stainless steel frame, and the top of the slag separation outer frame is a hinged structure so that the slag separation outer frame can be opened or closed.

3. The assembled upflow medium filter device according to claim 1, Features: There are multiple oil absorbing rods, which are vertically arranged in the slag separation outer frame, and the oil absorbing rods can float up and down with the change of water level.

4. The assembled upflow medium filter device according to claim 1, Features: The medium filter frame is a PP, aluminum alloy or stainless steel frame, and is a rectangular fence structure. The top of the medium filter frame is provided with two doors, and the medium filler can be taken out and placed by opening the doors.

5. The assembled upflow medium filter device according to claim 1, Features: The bottom of the medium filter frame is 10 cm higher than the bottom end of the slag barrier.

6. The assembled upflow medium filter device according to claim 1, Features: The top of the medium filter frame is flush with the lowest end of the pipe wall of the water outlet pipe.

7. The assembled upflow medium filter device according to claim 1, Features: A drainage filter located below the end of the upflow medium filter is installed on the water outlet side of the box.

8. The assembled upflow medium filter device according to claim 1, Features: The medium filler is ecological porous fiber cotton.

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