Integrated horizontal pipe sedimentation and ex-situ deep pond purification system

Abstract

The utility model belongs to a sewage treatment device, and particularly relates to an integrated horizontal pipe sedimentation and ex-situ deep pond purification system. A settling and filtering unit is constructed by adopting a horizontal pipe with a sludge discharge hole, a filter screen, a sludge storage tank and the like, a biochemical unit with an aeration function, a contact oxidation film and a biological floating bed is utilized, and a structural design of a water distribution channel, a settling unit and the biochemical unit which are annularly arranged is adopted. The problems that in the prior art, the effect of carrying and treating silt in sewage is poor, and the equipment utilization rate is low are effectively solved. The device has the advantages that physical turbidity removal and water purification can be combined, the water quality index and the sensory quality of a water body can be improved, landscapes can be beautified, and silt and organic matter carried by river water and initial rainwater can be effectively treated.

Description

Technical Field

[0001] The utility model belongs to a sewage treatment device, in particular to an integrated horizontal pipe sedimentation and ectopic deep pond purification system. Background Art

[0002] The prevention and control of river water is a necessary condition for improving the ecological environment. River water often serves as a receiving water body for domestic and industrial sewage discharge. When the self-purification capacity of river water is exceeded, it will lead to serious pollution of river water. During the rainy season, rainwater erosion will cause a large amount of sediment in the river water, reducing the transparency of the river water and even blocking the river.

[0003] The current technologies used to treat river water pollution are: source control, interception, and pipelining → sewage treatment plants, which have the disadvantages of long processing time, complex treatment methods, and requiring a lot of manpower and material resources.

[0004] The patent document with patent number 202322555313.0 discloses a biochemical filtration integrated river water treatment device, including a filter unit closely arranged in sequence, a first unit, i.e., a fixed microbial carrier unit, and a second biochemical treatment unit; the second biochemical treatment unit is a combination of membrane-forming or re-fixed microbial carrier balls, and an aeration device is provided at the bottom of the second biochemical treatment unit; the filler can be the same fixed microbial carrier balls or hanging wire fillers or honeycomb filler carriers as the first unit. The water flow is aligned with the filter unit, and then passes through the first unit and the second unit in sequence to reduce the COD, BOD, etc. in the water body. The above-mentioned prior art does not require sewage interception and pipe engineering, which greatly reduces the amount of engineering, has a simple treatment method and high efficiency, and can effectively remove ammonia nitrogen and organic matter in the water body by inoculating microorganisms and intermittent aeration. However, the way in which the filter unit is provided with a filter screen can only have a good interception effect on suspended matter, and cannot achieve an ideal treatment effect on the silt entrainment in sewage. In addition, when the water quality is good, the equipment is idle and cannot be fully utilized.

[0005] The applicant has not found any document identical or similar to the present application in the domestic patent database. Summary of the invention

[0006] The utility model aims to provide an integrated horizontal pipe sedimentation and ectopic deep pond purification system, which adopts a filtering unit composed of a horizontal pipe with a mud discharge hole, a filter screen, a mud storage tank and other technical structures, and uses a biochemical unit with aeration, a contact oxide film and a biological floating bed; combines physical turbidity removal with water purification, which can not only improve water quality indicators and water sensory quality, but also beautify the landscape; the initial rainwater in the rainy season can flow into the device by itself to purify the initial rainwater, and realize the treatment of river water, sediment and organic matter carried by the initial rainwater.

[0007] The overall technical concept of the utility model is:

[0008] Integrated horizontal tube sedimentation and ex situ deep pond purification system, including filtration unit and biochemical unit, including:

[0009] A. A water distribution channel is arranged in an annular shape and can be used to accommodate and / or collect river channels and / or precipitation. The material output of the water distribution channel is connected to the material input end of the sedimentation unit through a filter screen arranged at intervals on the inner side thereof. The sedimentation unit includes a horizontal pipe extending in the axial direction and arranged at intervals in the radial direction. Mud discharge holes are arranged at intervals along the axial direction on the lower side wall of the horizontal pipe. Mud discharge channels are formed between adjacent horizontal pipes. The end plate openings at both ends of the horizontal pipe are respectively connected to the material input end and the material output end of the sedimentation unit. A mud storage tank for storing mud discharged from the horizontal pipe is provided at the bottom of the sedimentation unit. The material output end of the sedimentation unit is connected to the material input end of the biochemical unit through the water collection area and the first outlet pipe;

[0010] B. The biochemical unit includes a pond, a biological floating bed that can float on the liquid surface of the pond and contains aquatic plants, a contact oxide film located on the side wall of the pond, an aeration device located in the middle of the pond, and ponds on the upper and lower sides of the aeration device forming an aerobic zone and an anaerobic zone respectively. The material output of the biochemical unit is discharged to the outside through the second outlet pipe.

[0011] The specific technical concepts of the utility model include:

[0012] In order to rationally utilize land, save floor space and facilitate material transportation, the preferred technical implementation method is that the water distribution channel, sedimentation unit, and catchment area are concentric ring structures with the pond of the biochemical unit as the center.

[0013] In order to realize backwashing of the horizontal pipe and prevent debris from clogging the horizontal pipe and affecting the use effect, a flushing pipe is also included, and the water outlet end of the flushing pipe opens in the cavity formed by the horizontal pipe and the end plate.

[0014] The filter screens are spaced apart along the distribution channel mainly to facilitate filtering of debris in the water in the distribution channel. In order to effectively and stably treat the water and meet load requirements, the preferred technical implementation method is that the filter screens are spaced apart at equal angles along the inner side of the distribution channel.

[0015] The biological floating bed is based on aquatic plants, uses the principle of soilless cultivation technology, uses polymer materials as carriers and matrices, applies the symbiotic relationship between species, and makes full use of the spatial niche and nutritional niche of the water body, thereby establishing an efficient artificial ecosystem to reduce the pollution load in the water body. Its main function is to use the principle of ecological engineering to degrade the content of COD, nitrogen and phosphorus in the water. It greatly improves the transparency of the water body, effectively improves water quality indicators, effectively inhibits the growth of algae, transfers the nutrients of the water body, and reduces the stench and eutrophication of the water body caused by the closure or lack of self-circulation. In order to meet the effect of the ecological floating bed and the needs of landscape beautification, the preferred technical implementation means is that the ratio of the area of ​​the biological floating bed to the pond area of ​​the biochemical unit is 50% to 70%, and the aquatic plants planted thereon are one of water celery, duckweed, windmill grass, and calamus or a combination thereof.

[0016] The contact oxide film is composed of a supporting skeleton and biological fillers. The biological filler is a material used for water treatment, mainly used in sewage treatment, as a carrier for microbial biofilm. Provide space for microorganisms to grow and reproduce: through its special structure and large specific surface area, the biological filler can provide enough space for microorganisms to grow and reproduce. Through its special structure, the biological filler can improve the distribution of water vapor, thereby improving the effect of water treatment. It has the characteristics of large specific surface area, light weight, high strength, corrosion resistance, stable performance, and various types. In order to meet the use effect and facilitate installation, the preferred technical implementation means is that the biological filler is selected from one of the hanging fillers, suspended fillers, fixed bed fillers, flat plate fillers, or a combination thereof. Because it belongs to the prior art, the applicant will not repeat its detailed structure.

[0017] The function of the biochemical unit is equivalent to the functional unit of the AO treatment process, which further degrades impurities such as nitrogen and phosphorus in the sewage. In order to meet the needs of its functional realization, the preferred technical implementation method is that the distance between the aeration device and the bottom of the pond of the biochemical unit is 1 to 3 meters.

[0018] The main function of the distribution channel is to collect river or rainwater, which can be achieved through collection pipes and collection channels. In order to reduce power input and facilitate the collection of initial rainwater, the preferred technical implementation method is that the top of the distribution channel is not higher than the ground surface.

[0019] In order to collect water from the river, the preferred technical implementation method is that the two ends of the water inlet pipe are connected to the river and the water distribution channel respectively, and whether pumping is required can be flexibly determined according to the height difference between the two ends of the water inlet pipe and the transportation distance.

[0020] In order to improve the sedimentation efficiency, the preferred technical implementation means is that the mud discharge holes are symmetrically distributed along the axial direction and are opened at intervals along the axial direction on the lower side wall of the horizontal pipe.

[0021] In the description of the present invention, the terms "output", "input", "axial", "radial", "lower", "bottom", "inner", "middle" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of simplifying the description of the present invention, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are only used to describe the difference, and cannot be understood as implying importance.

[0022] The technical progress achieved by the utility model is:

[0023] 1. The utility model has a concentric ring structure as a whole. First, it can effectively save space and the equipment layout is compact. Second, due to the short material transportation distance, the process flow is shortened compared with the existing technology, which effectively improves the sewage treatment efficiency. Third, the filter units are arranged at intervals along the circumference of the distribution channel, which is more conducive to achieving uniform and stable treatment effects and reducing system load requirements.

[0024] 2. The horizontal pipe structural design in the sedimentation unit of the utility model conforms to the design concept of shallow sedimentation in horizontal sedimentation, that is, when the length L of the sedimentation tank and the horizontal flow velocity V in the tank remain unchanged, the shallower the tank body, the smaller the suspended particles that can be removed; the above structure firstly effectively increases the unit water flow area and the capacity for sedimentation; secondly, the end plates at both ends of the horizontal pipe are closed to form a static liquid area, and the particles will not be scoured and stirred during the falling process, which improves the sedimentation efficiency by at least 30% compared with the traditional inclined pipe (inclined plate) sedimentation tank; thirdly, the lower side wall of the horizontal pipe is symmetrically distributed along the axial direction and is provided with mud discharge holes at intervals along the axial direction, which improves the sedimentation efficiency by at least 20% compared with the single-sided sliding mud channel. Fourthly, the structural design of the flushing pipe can effectively realize the water flow to flush each mud discharge channel from top to bottom, thereby achieving effective dredging.

[0025] 3. The top of the water distribution channel is not higher than the ground surface, so that the initial rainwater can flow in easily when the utility model is used in the rainy season, without the need to set up a rainwater collection pool and a rainwater lifting pump station, effectively reducing investment costs and engineering workload.

[0026] 4. The utility model introduces an aeration device as the main technical structure of the biochemical unit on the basis of the traditional pit pond, and divides the biochemical unit into an anaerobic zone and an aerobic zone, which can not only improve the denitrification and phosphorus removal capabilities of the biochemical unit, but also alleviate the problem of the pit pond water odor in summer. Plants are set on the surface of the pit pond water body, which can be used as an ecological landscape. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings of the present utility model include:

[0028] Figure 1 It is a schematic diagram of the planar structure of the utility model.

[0029] Figure 2 for Figure 1 AA zoomed in view.

[0030] Figure 3 Schematic diagram of the horizontal tube structure.

[0031] Figure 4 for Figure 3 BB direction view.

[0032] The reference numerals in the accompanying drawings are as follows:

[0033] 1. Water inlet pipe; 2. Water distribution channel; 2A. Filter screen; 3. Sedimentation unit; 3A. Horizontal pipe; 3B. Mud discharge hole; 3C. Water collection area; 3D. Flushing pipe; 3E. First water outlet pipe; 4. Mud storage tank; 5. Biochemical unit; 5A. Biological floating bed; 5B. Contact oxide film; 5C. Aeration device; 5D. Anaerobic zone; 6. Second water outlet pipe.

[0034] The drawings of the present invention are drawn using the drawing method in the national standard for mechanical drawing. In order to clearly show the details in the drawings, the dimension lines and center lines in the drawings are omitted. The aquatic plants on the biological floating bed 5A are drawn schematically, and because the contact oxide film 5B is a mesh structure, a partial display method is adopted. DETAILED DESCRIPTION

[0035] The following is a further description of the embodiments of the utility model in conjunction with the accompanying drawings, but it is not intended to limit the utility model. The protection scope of the utility model shall be based on the content recorded in the claims, and any equivalent technical means replaced according to the specification shall not depart from the protection scope of the utility model.

[0036] Example

[0037] The overall structure of this embodiment is shown in the figure, which is an integrated horizontal pipe sedimentation and ex situ deep pond purification system, including a filtration unit 3 and a biochemical unit 5, wherein:

[0038] A. A water distribution channel 2 is arranged in an annular shape and can be used to accommodate and / or collect river channels and / or precipitation. The top surface of the water distribution channel 2 is not higher than the ground surface. The material output of the water distribution channel 2 is connected to the material input end of the sedimentation unit 3 through the filter screen 2A arranged at equal angles on the inner side thereof. The sedimentation unit 3 includes a horizontal pipe 3A extending axially and arranged at intervals in the radial direction. The lower side wall of the horizontal pipe 3A is axially spaced and axially symmetrically provided with mud discharge holes 3B. Mud discharge channels are formed between adjacent horizontal pipes 3A. The end plate openings at both ends of the horizontal pipe 3A are respectively connected to the material input end and the material output end of the sedimentation unit 3. A mud storage tank 4 for storing mud discharged from the horizontal pipe 3A is provided at the bottom of the sedimentation unit 3. The material output end of the sedimentation unit 3 is connected to the material input end of the biochemical unit 5 through the water collection area 3C and the first water outlet pipe 3E. The water distribution channel 2, the water collection channel 3C, and the mud storage tank 4 are reinforced concrete structures;

[0039] B. The biochemical unit 5 includes a pond, a biological floating bed 5A which can float on the liquid surface of the pond and contains aquatic plants, a contact oxidation film 5B located on the side wall of the pond, an aeration device 5C located in the middle of the pond, and the ponds on the upper and lower sides of the aeration device 5C respectively form an aerobic zone and an anaerobic zone 5D. The material output of the biochemical unit 5 is discharged to the outside through the second outlet pipe 6; the pond of the biochemical unit 5 adopts an earthen pond structure and is paved with a HDPE geomembrane for anti-seepage.

[0040] The water distribution channel 2, the sedimentation unit 3 and the water collection area 3C are concentric ring structures with the pond of the biochemical unit 5 as the center.

[0041] It also includes a flushing pipe 3D, the water outlet end of which opens into the cavity formed by the horizontal pipe 3A and the end plate.

[0042] The area ratio of the biological floating bed 5A to the area of ​​the biochemical unit 5 is 50% to 70%, and the aquatic plants planted thereon are one of water celery, water hyacinth, windmill grass, and calamus, or a combination thereof.

[0043] The contact oxide film 5B is composed of a supporting skeleton and biological fillers, wherein the biological fillers are selected from one of hanging fillers, suspended fillers, fixed bed fillers, flat plate fillers or a combination thereof. As it belongs to the prior art, the applicant will not elaborate on its detailed structure.

[0044] The distance between the aeration device 5C and the bottom of the biochemical unit 5 is 1 to 3 meters.

[0045] Both ends of the water inlet pipe 1 are connected to the river and the water distribution channel 2 respectively.

Claims

1. An integrated horizontal pipe sedimentation and ex situ deep pond purification system, comprising a sedimentation unit (3) and a biochemical unit (5); characterized in that: A. A water distribution channel (2) is arranged in an annular shape and can be used to accommodate and / or collect river and / or precipitation. The material output of the water distribution channel (2) is connected to the material input end of the sedimentation unit (3) through a filter screen (2A) arranged at intervals on the inner side thereof. The sedimentation unit (3) comprises a horizontal pipe (3A) extending in the axial direction and arranged at intervals in the radial direction. The lower side wall of the horizontal pipe (3A) is provided with mud discharge holes (3B) at intervals along the axial direction. Mud discharge channels are formed between adjacent horizontal pipes (3A). The end plate openings at both ends of the horizontal pipe (3A) are respectively connected to the material input end and the material output end of the sedimentation unit (3). A mud storage tank (4) for storing mud discharged from the horizontal pipe (3A) is provided at the bottom of the sedimentation unit (3). The material output end of the sedimentation unit (3) is connected to the material input end of the biochemical unit (5) through a water collection area (3C) and a first water outlet pipe (3E); B. The biochemical unit (5) comprises a pond, a biological floating bed (5A) which can float on the surface of the pond liquid and contains aquatic plants, a contact oxidation film (5B) located on the side wall of the pond, an aeration device (5C) arranged in the middle of the pond, and the ponds on the upper and lower sides of the aeration device (5C) respectively form an aerobic zone and an anaerobic zone (5D). The material output of the biochemical unit (5) is discharged to the outside through a second outlet pipe (6).

2. The integrated horizontal pipe sedimentation and ex situ deep pond purification system according to claim 1 is characterized in that The water distribution channel (2), the sedimentation unit (3) and the water collection area (3C) are concentric ring structures with the pond of the biochemical unit (5) as the center.

3. The integrated horizontal pipe sedimentation and ex situ deep pond purification system according to claim 1 is characterized in that It also includes a flushing pipe (3D), the water outlet end of which opens into the cavity formed by the horizontal pipe (3A) and the end plate.

4. The integrated horizontal pipe sedimentation and ex situ deep pond purification system according to claim 2 is characterized in that The filter screens (2A) are arranged at equal angles along the inner side of the water distribution channel (2).

5. The integrated horizontal pipe sedimentation and ex situ deep pond purification system according to claim 1 is characterized in that The ratio of the area of ​​the biological floating bed (5A) to the area of ​​the pond of the biochemical unit (5) is 50% to 70%.

6. The integrated horizontal pipe sedimentation and ex situ deep pond purification system according to claim 1 is characterized in that The contact oxide film (5B) is composed of a supporting skeleton and biological fillers.

7. The integrated horizontal pipe sedimentation and ex situ deep pond purification system according to claim 1 is characterized in that The distance between the aeration device (5C) and the bottom of the pond of the biochemical unit (5) is 1 to 3 meters.

8. The integrated horizontal pipe sedimentation and ex situ deep pond purification system according to claim 1, 2 or 4, characterized in that The top of the water distribution channel (2) is not higher than the ground surface.

9. The integrated horizontal pipe sedimentation and ex situ deep pond purification system according to claim 8, characterized in that Both ends of the water inlet pipe (1) are respectively connected to the river and the water distribution channel (2).

10. The integrated horizontal pipe sedimentation and ex situ deep pond purification system according to claim 1, characterized in that The mud discharge holes (3B) are symmetrically distributed along the axial direction and are arranged at intervals along the axial direction on the lower side wall of the horizontal pipe (3A).

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