Baffling type modularized river channel inter-gravel purification zone structure

Abstract

The utility model discloses a baffling type modularized river channel inter-gravel purification zone structure which is arranged at the bottom of a river channel protection slope and comprises an inter-gravel purification zone module and a water distribution channel module. The water distribution channel module is fixed at the top of the river retaining wall, and river water firstly enters the water distribution channel module and then overflows into the inter-gravel purification zone module; the inter-gravel purification belt module comprises a shell, and the inner space of the shell is sequentially divided into a horizontal flow unit, a downward flow unit and an upward flow unit; each treatment unit is filled with a water treatment filter material; and the anti-scouring protection layer is fixed at the top end of the shell and is used for protecting the filter material in the whole inter-gravel purification zone module from being directly impacted by flood. The purification belt structure can provide a fixed living space for microorganisms, integrates multiple functions of filtration, adsorption, contact oxidation, biodegradation and the like at the same time, and is good in treatment effect, high in adaptability, easy and convenient to operate and maintain, small in sludge amount and short in modular construction period.

Description

Technical Field

[0001] The utility model belongs to the field of ecological engineering, and in particular relates to a baffled modular river channel gravel purification belt structure. Background Art

[0002] Traditional technologies for improving river water quality mainly include physical, chemical and biological methods. The physical method is to use sedimentation, filtration, aeration and other means to remove suspended matter, colloids and dissolved gases in the water, and improve the transparency and dissolved oxygen content of the water body. The chemical method is to use chemical reactions such as coagulation, oxidation and precipitation to remove organic matter, inorganic matter and microorganisms in the water, and reduce the color, turbidity and pollutant concentration of the water body. The biological method is to use the metabolism of aquatic plants, microorganisms and aquatic animals to remove organic matter, nitrogen, phosphorus and other nutrients in the water, and improve the biological water quality and ecological environment of the water body.

[0003] With the development of water conservancy projects and the emphasis on water environment protection, traditional river water quality improvement technology has been continuously improved and innovated, forming a relatively mature and systematic technical system. Traditional river water quality improvement technology has improved the water quality of rivers to a certain extent, but it also has some shortcomings and limitations, such as high energy consumption, high cost, large land occupation, secondary pollution, ecological damage, etc. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a baffled modular river gravel purification belt structure, which effectively removes BOD5, SS, ammonia nitrogen and total phosphorus in sewage through multiple functions such as filtration, adsorption, contact oxidation and biodegradation. It is suitable for the restoration of urban river and lake waterfront space, the improvement of river water quality with serious non-point source pollution and ecological degradation, and the determination and protection and restoration of river and lake ecological buffer zones. The purification belt structure is highly integrated, with low operating costs and high treatment efficiency.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A baffled modular river gravel purification belt structure, arranged at the bottom of the river slope protection, comprises a gravel purification belt module and a water distribution channel module;

[0007] The water distribution channel module is fixed on the top of the river retaining wall, and the river water first enters the water distribution channel module and then overflows into the gravel purification zone module;

[0008] The gravel purification belt module includes a shell, a first perforated water-permeable plate, a baffle, a perforated water-permeable pipe, an anti-scouring protective layer, a first water treatment filter material, a second water treatment filter material and a third water treatment filter material; wherein, the first perforated water-permeable plate and the baffle are arranged inside the shell, so as to divide the internal space of the shell into three parts: a horizontal flow unit, a downstream flow unit and an upstream flow unit in sequence; the horizontal flow unit and the downstream flow unit are separated by the first perforated water-permeable plate, and the downstream flow unit and the upstream flow unit are separated by the baffle; the perforated water-permeable pipe passes through the baffle, with one end located in the downstream flow unit and the other end located in the upstream flow unit, so as to realize water body communication between the downstream flow unit and the upstream flow unit; the first water treatment filter material is filled in the horizontal flow unit, the second water treatment filter material is filled in the downstream flow unit, and the third water treatment filter material is filled in the upstream unit; the anti-scouring protective layer is fixed on the top of the shell, and is used to protect the filter material inside the entire gravel purification belt module from direct impact of floods.

[0009] Furthermore, there are multiple inter-gravel purification belt modules.

[0010] Furthermore, the first water treatment filter material transitions from a gravel filter material with a particle size of 10 to 20 mm to a gravel filter material with a particle size of 6 to 10 mm along the water flow direction.

[0011] Furthermore, the second water treatment filter material and the third water treatment filter material are both biological filter materials with a particle size of 8 to 10 mm.

[0012] Furthermore, the second water treatment filter material and the third water treatment filter material are both selected from one or more of gravel, volcanic rock or ceramsite.

[0013] Furthermore, the anti-scour protection layer is made of gabion stone cage mesh.

[0014] Furthermore, it also includes an overflow trough, which is fixed on the downstream side of the shell, and the water purified by the upstream flow unit flows out through the overflow trough and enters the river.

[0015] Furthermore, it also includes an anti-floating anchor rod fixed to the bottom of the shell body, which is used to fix the inter-gravel purification belt module in the river channel.

[0016] The beneficial effects of the utility model are as follows:

[0017] 1. The purification belt structure of the utility model can provide a fixed living space for microorganisms, and simultaneously integrate multiple functions such as filtration, adsorption, contact oxidation, and biodegradation. It has good treatment effect, strong adaptability, and strong impact resistance to water volume fluctuations.

[0018] 2. It has a wide range of applications and can treat water bodies with different degrees of pollution.

[0019] 3. Small footprint, low energy consumption, easy operation and maintenance, and small amount of sludge.

[0020] 4. The modular construction has a short construction period and the construction process has little disturbance to the river water quality;

[0021] 5. Modular facilities are low-carbon, environmentally friendly, and highly ecological. They can quickly repair rivers and restore water ecology, increase dissolved oxygen in water bodies, increase biodiversity, and create waterfront landscapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the baffled modular river gravel purification zone structure of the embodiment.

[0023] In the figure, there are gravel purification zone module 1, water distribution channel module 2, river bank protection 3, shell 1-1, first perforated water-permeable plate 1-2, baffle 1-3, perforated water-permeable pipe 1-4, anti-scour protection layer 1-5, first water treatment filter material 1-6, second water treatment filter material 1-7, third water treatment filter material 1-8, overflow trough 1-9, anti-floating anchor rod 1-10, river bank protection 3-1, and river retaining wall 3-2. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below based on the accompanying drawings and preferred embodiments, and the purpose and effects of the present invention will become more clear. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] like Figure 1 As shown, the river bank 3 is composed of a river slope protection 3-1 and a river retaining wall 3-2. The baffled modular river gravel purification zone structure of this embodiment is arranged at the bottom of the river slope protection 3-1, including a gravel purification zone module 1 and a water distribution channel module 2.

[0026] Among them, the water distribution channel module 2 is a quick-assembly structure of engineering plastics, fixed on the top of the river retaining wall 3-2. The river water enters the water distribution channel module 2 after being lifted by the upstream water-blocking dam or water pump, and then overflows from the water distribution channel module 2 into the gravel purification zone module 1; the river water passes through the water distribution channel module 2 and is evenly distributed to the gravel purification zone module 1.

[0027] The gravel purification belt module 1 is in the shape of a long cube, including a shell 1-1, a first perforated water-permeable plate 1-2, a baffle 1-3, a perforated water-permeable pipe 1-4, an anti-scour protective layer 1-5, a first water treatment filter material 1-6, a second water treatment filter material 1-7, a third water treatment filter material 1-8 and an overflow tank 1-9. Among them, the shell 1-1 is located outside and is made of PE polymer material, fiberglass or engineering plastics. The first perforated water-permeable plate 1-2 and the baffle 1-3 are arranged inside the shell 1-1, thereby dividing the internal space of the shell 1-1 from left to right into a horizontal flow unit, a downstream flow unit and an upstream flow unit. Among them, the horizontal flow unit and the downstream flow unit are separated by the first perforated water-permeable plate 1-2, and the downstream flow unit and the upstream flow unit are separated by the baffle 1-3. The upper opening of the first perforated water-permeable plate 1-2 realizes the water connection between the horizontal flow unit and the downstream flow unit; the perforated water-permeable pipe 1-4 passes through the baffle 1-3, one end of which is located in the downstream flow unit and the other end is located in the upstream flow unit, realizing the water connection between the downstream flow unit and the upstream flow unit. The first water treatment filter material 1-6 is filled in the horizontal flow unit, the second water treatment filter material 1-7 is filled in the downstream flow unit, and the third water treatment filter material 1-8 is filled in the upstream flow unit, and the first water treatment filter material 1-6 transitions from a gravel filter material with a particle size of 10 to 20 mm to a gravel filter material with a particle size of 6 to 10 mm along the water flow direction, thereby realizing step-by-step filtration of the river water. The second water treatment filter material 1-7 and the third water treatment filter material 1-8 are both biological filter materials with a particle size of 8 to 10 mm, preferably gravel, volcanic rock, ceramsite and other water treatment filter materials.

[0028] The anti-scour protection layer 1-5 is fixed on the top of the shell 1-1 to protect the filter material inside the entire gravel purification zone module 1 from direct impact by floods. The anti-scour protection layer 1-5 is preferably made of gabion stone cages. The overflow trough 1-9 is fixed on the downstream side of the shell 1-1, and the water purified by the upstream flow unit flows out through the overflow trough 1-9 and enters the river channel.

[0029] The baffled modular river gravel purification belt structure of this embodiment can be placed on the outer side of the downstream river retaining wall 3-2 of the river that needs to be purified by a crane. The river water is lifted by the upstream water-blocking weir or water pump into the water distribution channel module 2. The water distribution channel module 2 is used in conjunction with multiple gravel purification belt modules 1. The water distribution channel module 2 evenly distributes the river water to each gravel purification belt module 1. The water flow direction in the module is horizontal flow, vertical downward flow and vertical upward flow, respectively, and purification is achieved in the filter material in a baffled manner. The gravel purification belt module 1 uses a modular structure as a container, and the upstream river water is connected at one end of the container. After being treated by the gravel purification belt, water purification and dissolved oxygen improvement are achieved. It can be centrally arranged in the river beach or fragmented according to actual needs. The treatment process of a single inter-gravel purification zone module 1 is as follows: river water first enters the horizontal flow unit for treatment through the anti-scour protection layer 1-5, then enters the downstream flow unit through the first perforated permeable plate 1-2, and after being treated in the downstream flow unit, it is collected through the perforated permeable pipe 1-4 and enters the upstream flow unit. The river water treated in the upstream flow unit finally overflows into the river channel through the overflow trough 1-9.

[0030] In order to ensure that the inter-gravel purification zone module 1 can be stably fixed in the river channel, an anti-floating anchor rod 1-10 can be provided at the bottom of the shell 1-1, and the inter-gravel purification zone module 1 can be fixed to the beach by the anti-floating anchor rod 1-10.

[0031] Preferably, the water-facing side of the inter-gravel purification zone module 1 can be protected from the impact of river water under large water volume by setting up reinforced concrete retaining walls or ecological revetments such as pine piles.

[0032] Those skilled in the art can understand that the above are only preferred examples of the utility model and are not intended to limit the utility model. Although the utility model is described in detail with reference to the above examples, those skilled in the art can still modify the technical solutions recorded in the above examples or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A baffled modular river gravel purification zone structure, It is characterized in that It is set at the bottom of the river bank, including the gravel purification zone module and the water distribution channel module; The water distribution channel module is fixed on the top of the river retaining wall, and the river water first enters the water distribution channel module and then overflows into the gravel purification zone module; The gravel purification belt module includes a shell, a first perforated water-permeable plate, a baffle, a perforated water-permeable pipe, an anti-scouring protective layer, a first water treatment filter material, a second water treatment filter material and a third water treatment filter material; wherein, the first perforated water-permeable plate and the baffle are arranged inside the shell, so as to divide the internal space of the shell into three parts: a horizontal flow unit, a downstream flow unit and an upstream flow unit in sequence; the horizontal flow unit and the downstream flow unit are separated by the first perforated water-permeable plate, and the downstream flow unit and the upstream flow unit are separated by the baffle; the perforated water-permeable pipe passes through the baffle, with one end located in the downstream flow unit and the other end located in the upstream flow unit, so as to realize water body communication between the downstream flow unit and the upstream flow unit; the first water treatment filter material is filled in the horizontal flow unit, the second water treatment filter material is filled in the downstream flow unit, and the third water treatment filter material is filled in the upstream unit; the anti-scouring protective layer is fixed on the top of the shell, and is used to protect the filter material inside the entire gravel purification belt module from direct impact of floods.

2. The baffled modular river gravel purification zone structure according to claim 1, It is characterized in that There are multiple inter-gravel purification belt modules.

3. The baffled modular river gravel purification zone structure according to claim 1, It is characterized in that The first water treatment filter material transitions from a gravel filter material with a particle size of 10 to 20 mm to a gravel filter material with a particle size of 6 to 10 mm along the water flow direction.

4. The baffled modular river gravel purification zone structure according to claim 1, It is characterized in that The second water treatment filter material and the third water treatment filter material are both biological filter materials with a particle size of 8 to 10 mm.

5. The baffled modular river gravel purification zone structure according to claim 4, It is characterized in that The second water treatment filter material and the third water treatment filter material are both selected from one or more of gravel, volcanic rock or ceramsite.

6. The baffled modular river gravel purification zone structure according to claim 1, It is characterized in that The anti-scour protection layer is made of gabion stone cage mesh.

7. The baffled modular river gravel purification zone structure according to claim 1, It is characterized in that It also includes an overflow trough, which is fixed on the downstream side of the shell. Water purified by the upstream flow unit flows out through the overflow trough and enters the river.

8. The baffled modular river gravel purification zone structure according to claim 1, It is characterized in that It also includes an anti-floating anchor rod fixed on the bottom of the shell body and used for fixing the inter-gravel purification belt module in the river channel.

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