Rain sewage interception treatment device

Abstract

The utility model discloses a rain sewage interception treatment device which comprises a shell, a primary interception cabin, a main body purification cabin and a slow filtration and repurification cabin are sequentially arranged in the shell, the primary interception cabin is communicated with the main body purification cabin, and the main body purification cabin is communicated with the slow filtration and repurification cabin. The device can be arranged at a rainwater discharge port of a river channel, and rainwater sewage discharged from the rainwater discharge port sequentially passes through the primary interception cabin and the main body purification cabin, finally passes through the slow filtration re-purification cabin and then is discharged into the river channel. The overall structure of the rain sewage interception treatment device disclosed by the utility model can realize purification treatment on sewage in a limited volume, is convenient to arrange, is favorable for being arranged at positions with limited spaces, such as a rain sewage discharge port, can effectively reduce pollutants discharged from the rain sewage discharge port, and can effectively solve the pollution problem of a temporary discharge port.

Description

Technical Field

[0001] The utility model belongs to the technical field of rainwater and sewage treatment, and relates to a rainwater and sewage interception and treatment device. Background Art

[0002] The main sources of pollutants such as ammonia nitrogen, total phosphorus and COD are domestic wastewater and initial rainwater. Among them, domestic wastewater accounts for a large proportion of water ecological environment pollution. Studies have shown that the pollution caused by the mixture of rainwater and wastewater accounts for about 80% of the overall domestic sewage pollution. Domestic wastewater directly enters the river through the pipe outlet and returns to the river to cause pollution. Therefore, how to quickly and effectively solve the problem of sewage outflow from the river drainage hole is urgently needed.

[0003] According to existing surveys, the types of outlets in the river are mainly enterprise sewage outlets and domestic sewage outlets, most of which are rainwater and sewage outlets. The problem of external outlets has seriously affected the water quality of the river and has greatly restricted the restoration of the river and water ecology. Therefore, how to use a simple, efficient and convenient outlet purification interception device to improve the existing predicament is of great practical significance. Utility Model Content

[0004] The utility model aims to provide a rainwater and sewage interception and treatment device.

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

[0006] A rainwater and sewage interception and treatment device comprises a shell, in which a primary interception chamber, a main purification chamber and a slow filtration and re-purification chamber are sequentially arranged, the primary interception chamber is connected to the main purification chamber, and the main purification chamber is connected to the slow filtration and re-purification chamber.

[0007] Optionally, the primary interception chamber and the main purification chamber are connected via a through-hole provided in a partition between the two, and a filter screen is also provided in the primary interception chamber, and the water flowing to the main purification chamber passes through the filter screen and the through-hole in sequence.

[0008] Optionally, the main purification chamber is provided with an aeration area, a biological filter area and an aquatic plant area from bottom to top; the biological filter area is provided with biological filter material, the aquatic plant area is provided with a biological floating bed, and aquatic plants are planted on the biological floating bed.

[0009] Optionally, one or more air supply pipes connected to an air compressor are arranged in the aeration area, and a plurality of aeration plates are connected to the air supply pipes.

[0010] Optionally, a filter frame carrying biological filter media is provided in the biological filter media area, and the outer wall of the filter media frame is in contact with the inner wall of the main purification chamber; a large number of holes are formed at the bottom of the filter media frame, and the aperture of the holes is smaller than the particle size of the biological filter media.

[0011] Optionally, a gabion cage is provided in the slow filtration and re-purification chamber, and the gabion cage is filled with three layers of fillers in sequence according to the water flow direction; the three layers of fillers are respectively filled with fillers of different particle sizes and materials.

[0012] Optionally, the solar panel on the top of the slow filtration and purification chamber is connected to a battery device, the solar panel is electrically connected to the battery, and the battery is electrically connected to the air compressor.

[0013] Optionally, a plurality of fixing rods are connected to the bottom of the shell, and the fixing rods are perpendicular to the bottom of the shell.

[0014] Optionally, a lifting bracket is provided in the primary interception chamber, and the lifting bracket includes a planar frame parallel to the bottom wall of the primary interception chamber and a lifting rod vertically connected to the planar frame, and the filter is connected to the planar frame.

[0015] Optionally, a drainage hole is provided on the bulkhead of the primary interception chamber, and the drainage hole is arranged below the filter screen, and an openable closing gate is also provided on the drainage hole.

[0016] The beneficial effects of the utility model include:

[0017] (1) The overall structure of the rainwater and sewage interception and treatment device disclosed in the utility model can realize the purification treatment of sewage within a limited volume, is easy to deploy, and is conducive to deployment in locations with limited space such as river rainwater outlets. It can effectively reduce pollutants discharged from rainwater and sewage outlets and can effectively solve the pollution problem of temporary outlets.

[0018] (2) The primary interception chamber of the rainwater and sewage interception and treatment device disclosed in the utility model is provided with a filter screen, which can effectively intercept garbage and large suspended matter, and the filter screen is arranged on a lifting bracket, which is convenient for cleaning and maintenance of the filter screen. The closable drainage hole opened on the wall of the primary interception chamber can cope with the situation of large water flow and avoid system collapse.

[0019] (3) The main purification chamber aeration structure and biological filter system of the rainwater and sewage interception and treatment device disclosed in the utility model can simulate a small aerated biological filter tank and effectively reduce the concentration of organic matter and nitrogen and phosphorus pollutants in sewage. The replaceable biological filter frame is arranged in the main purification chamber, which is convenient for adjusting the filter material quantity density according to the actual water quality of the sewage and also convenient for regular replacement and cleaning of the filter frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of the rainwater and sewage intercepting device disclosed by the utility model.

[0021] In the figure: 1. lifting bracket; 2. flower hole; 3. air supply pipe; 4. biological filter material; 5. ecological floating bed; 6. filter material frame; 7. solar panel; 8. battery; 9. filler; 10. fixing rod; 11. sewage outlet; 12. drainage hole; 13. primary interception cabin; 14. main purification cabin; 15. slow filtration purification cabin; 16. first filler layer; 17. second filler layer; 18. third filler layer. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1 The figure shows an exemplary embodiment of the rainwater and sewage interception and treatment device disclosed in the utility model.

[0024] like Figure 1 As shown, a rainwater and sewage intercepting and treating device comprises a shell, in which a primary intercepting chamber 13, a main purification chamber 14 and a slow filtration and re-purification chamber are sequentially arranged. In other words, the rainwater and sewage entering the rainwater and sewage intercepting device will sequentially enter the primary intercepting chamber 13, the main purification chamber 14 and finally enter the slow filtration and re-purification chamber.

[0025] The primary interception cabin 13 and the main purification cabin 14 are separated by a partition plate arranged in the shell, and the two sides and the bottom of the partition plate are respectively abutted against the side plate and the bottom plate of the shell, thereby ensuring the separation of the primary interception cabin 13 and the main purification cabin 14. A through hole 2 is provided on the partition plate to ensure that rainwater and sewage can enter the main purification cabin 14 from the primary interception cabin 13.

[0026] The primary interception chamber 13 is used to perform preliminary filtration on rainwater and sewage to filter out debris such as leaves, garbage, sand and gravel therein, so as to prevent the debris from entering the main purification chamber 14 or clogging the flower hole 2. Specifically, a filter is connected to the flower hole 2, and rainwater and sewage entering from the primary interception chamber 13 will pass through the filter, which can ensure that debris in the rainwater and sewage is intercepted.

[0027] In order to avoid the clogging of the filter screen caused by the accumulation of trapped debris, or even the problem of a decrease in the volume of sewage that can be accommodated in the primary interception chamber 13, it is necessary to regularly clean the trapped garbage and debris in the primary interception chamber 13.

[0028] In an exemplary embodiment, in order to facilitate the cleaning of the filter screen, a lifting bracket 1 is arranged in the primary interception chamber 13, and the filter screen is connected to the lifting bracket 1. The lifting bracket 1 includes a plane frame parallel to the bottom wall of the primary interception chamber 13 and a lifting rod vertically connected to the plane frame. The outer periphery of the plane frame is just embedded with the inner wall of the primary interception chamber 13 and can slide along the wall of the primary interception chamber 13. The filter screen is connected to the plane frame and the installation height of the filter screen is higher than the setting height of the flower hole 2 to ensure that rainwater and sewage can flow into the main purification chamber 14 through the flower hole 2 after passing through the filter screen. Among them, the plane frame is a polygonal frame formed by connecting multiple rods parallel to the bottom wall of the primary interception chamber 13, and the peripheral portion of the filter screen is connected to the polygonal frame, that is, the filter screen is parallel to the bottom wall of the primary interception chamber 13. The top of the lifting rod is slightly lower than the top of the primary interception chamber 13, so as to facilitate the lifting bracket 1. When it is necessary to clean the trapped debris in the primary interception chamber 13, the filter screen can be pulled out of the primary interception chamber 13 by a lifting rod to achieve cleaning or replacement of the filter screen.

[0029] In order to prevent a sudden increase in the amount of water coming from upstream, if the rainwater and sewage interception device disclosed in the utility model is arranged at the rainwater outlet of the river to intercept rainwater and sewage, when the precipitation is large in the rainy season, the drainage volume of the rainwater outlet increases. At this time, the pollution of rainwater and sewage is generally small, and only the sewage can be initially intercepted to prevent the collapse of the entire treatment device due to the large impact load. Therefore, a drainage hole 12 is opened on the bulkhead of the primary purification compartment, and an openable closed gate is provided on the drainage hole 12. The drainage hole 12 is in a closed state most of the time and is only opened for drainage when the drainage volume of the rainwater outlet is too large to damage the treatment device. Among them, the position of the drainage hole 12 is set below the filter to ensure that the water discharged from the drainage hole 12 also passes through the filter to intercept debris or garbage in the rainwater and sewage.

[0030] The main purification chamber 14 is divided into an aeration zone, a biological filter zone 4 and an aquatic plant zone from bottom to top. The biological filter zone 4 is located below the water surface as a whole. In other words, aquatic plants are planted in the water surface above the biological filter zone 4 to form an aquatic plant zone.

[0031] The biological filter material 4 is arranged in the biological filter material 4 area, and the biological filter material 4 can promote the growth of microorganisms that decompose organic pollutants, nitrogen and phosphorus compounds and other pollutants, thereby achieving purification treatment of rainwater and sewage.

[0032] In an exemplary embodiment, the biological filter material 4 is arranged in the filter material frame 6, and the filter material frame 6 is placed in the main purification chamber 14. The outer wall of the filter material frame 6 can be abutted against the inner wall surface of the main purification chamber 14, and can slide along the inner wall surface of the main purification chamber 14. On the one hand, it is convenient to take and put the filter material frame 6. If the biological filter material 4 needs to be replaced, the filter material frame 6 can be taken out from the top opening of the main purification chamber 14 for replacement, which improves the replacement efficiency of the biological filter material 4; on the other hand, it can also basically avoid rainwater and sewage bypassing the biological filter material 4 and flow out, ensuring that the rainwater and sewage entering the main purification chamber 14 can be treated and purified. It should be noted that a large number of holes are formed at the bottom of the filter material frame 6 so that rainwater and sewage can enter the biological filter material 4, and the aperture of the hole is smaller than the particle size of the biological filter material 4 to reduce the loss of the biological filter material 4.

[0033] In order to reserve enough space for the aeration zone, the filter frame 6 is arranged above the aeration zone. Accordingly, a bracket is fixedly connected to the inner wall of the main purification chamber 14, and the filter frame 6 can be placed on the bracket.

[0034] Furthermore, for rainwater and sewage with different pollution levels, the demand for biological filter materials 4 also varies greatly, so different numbers of biological filter material 4 frames can be set according to the purification requirements of rainwater and sewage, that is, multiple filter material frames 6 are stacked up and down to achieve flexible increase or decrease in the number of biological filter materials 4. When the load is large, microbial agents can be temporarily added to prevent system collapse.

[0035] The aeration zone is provided with one or more air supply pipes 3 connected to an air compressor or other air delivery equipment, and the air supply pipe 3 is also connected to a plurality of branch pipes. The air supply pipe 3 and the branch pipes are also connected to microporous aeration disks, which can deliver a large number of bubbles into the water body, and these bubbles can stir the water body and improve the purification effect of rainwater and sewage. The introduction of a large amount of air into the water can also help to increase the oxygen content in the water, which is conducive to promoting the growth of microorganisms attached to the biological filter material 4, thereby accelerating the oxidation and decomposition of pollutants such as organic matter and ammonia nitrogen in the water.

[0036] In an exemplary embodiment, the aeration disk has a specification of Φ215 mm and adopts an intermittent aeration operation mode.

[0037] An ecological floating bed 5 is arranged on the water surface of the aquatic plant area, and aquatic plants are planted on the ecological floating bed 5. The roots of the aquatic plants on the ecological floating bed 5 can further purify the rainwater and sewage in the main purification chamber 14, and further reduce the pollutants in the water. The base surface of the floating bed is a pull-out structure, and its height in the water is also slightly lower than the top of the main purification chamber 14. The base surface of the floating bed can be taken out from the side of the top of the main purification chamber 14. These aquatic plants can also create river landscapes and improve the ecological and aesthetic properties of the river.

[0038] The aquatic plants are mainly emergent plants and other aquatic plants, and most of them are varieties with strong environmental adaptability, high purification ability and good landscape effect, such as yellow iris, loosestrife, canna, etc.

[0039] The aeration structure and biological filter material 4 provided in the main purification chamber 14 can simulate a small-scale aerated biological filter tank, and can effectively reduce the concentration of organic matter and nitrogen and phosphorus pollutants in sewage.

[0040] The slow filtration re-purification chamber and the main purification chamber 14 are also separated by a partition. When the top of the partition is basically flush with the water level of the main purification chamber 14, and the top of the partition is a smooth arc, so that the water can easily flow into the slow filtration re-purification chamber. In short, the top of the partition is an overflow structure, so that the sewage enters the main purification chamber 14 and stays there for a sufficient time before flowing into the slow filtration re-purification chamber. In addition, the top of the partition is lower than the height of the shell side plate, so that the sewage entering the rainwater outlet treatment device can always flow in the device.

[0041] The slow filtration and re-purification chamber is provided with a gabion cage, and the outer side of the gabion cage is a cage structure formed by a gabion net, which is filled with multiple layers of fillers 9. Along the flow direction of the water, the gabion cage is sequentially provided with a first filler layer 16, a second filler layer 17 and a third filler layer 18. The fillers 9 filled in the three filler layers are of different materials and particle sizes, and different fillers 9 are matched to achieve a better purification effect. The fillers 9 in the three layers of the filler layers are evenly arranged to meet the uniformity requirements of each layer of filler 9.

[0042] A solar panel 7 and a battery 8 are also provided on the top of the filtration and purification chamber, wherein the solar panel 7 and the battery 8 are connected by cables, and the battery 8 is electrically connected to an air compressor or other air conveying equipment to achieve self-powering of the rainwater outlet treatment device and ensure stable operation of the aeration system.

[0043] In an exemplary embodiment, the first filler layer 16 is made of volcanic rock with a particle size of 60 to 100 mm;

[0044] The second packing layer 17 is made of zeolite with a particle size of 40 to 100 mm;

[0045] The third filler layer 18 is made of ceramsite with a particle size of 40 to 60 mm;

[0046] Gabion mesh is made of hot-dip galvanized material, with an aperture of 40*40mm and a mesh wire thickness of 2 to 4mm.

[0047] The rainwater outlet treatment device disclosed in the utility model is arranged at the river outlet when in use, and the primary interception chamber 13 is connected to the sewage outlet 11, so that the sewage discharged from the sewage is discharged into the river after being treated, thereby reducing the impact of the sewage on the river bank.

[0048] In order to stably arrange the rainwater outlet treatment device in the river channel, the bottom of the shell is fixedly connected to a plurality of fixing rods 10 perpendicular to the bottom of the shell, and these fixing rods 10 are basically arranged at the edge and corner positions of the bottom of the shell. When arranging the rainwater outlet, the fixing rods 10 are inserted into the riverbed and fixed.

[0049] The shell of the rainwater and sewage interception and treatment device is a box structure with a height of about 1m, a length of 6m, and a width of 1m, wherein the primary interception chamber 13 is about 1m long, the main purification chamber 14 is about 3m long, and the slow filtration and re-purification chamber is about 2m long. The interception and treatment device is supported and fixed by 12 DN50 hot-dip galvanized steel pipes, that is, the fixing rod 10 is a DN50 hot-dip galvanized steel pipe. To ensure the stability of the device, the hot-dip galvanized steel pipe should be ensured to be immersed in the ground for more than 50cm.

[0050] The filter has an aperture of 5 mm, which can intercept larger garbage and leaves, etc. Its pull-up structure is convenient for periodic cleaning and maintenance, and the operation is simple and effective.

[0051] From the above, it can be seen that the utility model makes full use of physical interception and filtration, plant purification and absorption, and microbial physical and chemical purification to achieve layer-by-layer purification of discharged rainwater, remove larger suspended matter, eutrophication factors such as nitrogen and phosphorus, and organic and inorganic pollutants in the water body, and create a river landscape at the same time.

[0052] The above-mentioned related explanations and descriptions of the embodiments are for the purpose of facilitating the understanding and application of the present invention by ordinary technicians in the technical field. It is obvious that those familiar with the technical field can easily make various modifications to these contents and apply the general principles described herein to other embodiments without creative work. The present invention is not limited to the above-mentioned related explanations and descriptions of the embodiments. Improvements and modifications made by technicians in the field based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A rainwater and sewage interception and treatment device, characterized in that: It comprises a shell, in which a primary interception cabin, a main purification cabin and a slow filtration and re-purification cabin are sequentially arranged, the primary interception cabin is connected with the main purification cabin, and the main purification cabin is connected with the slow filtration and re-purification cabin.

2. The rainwater and sewage interception and treatment device according to claim 1 is characterized in that: The primary interception chamber and the main purification chamber are connected through a through hole arranged in a partition between the two. A filter screen is also arranged in the primary interception chamber, and the water flowing to the main purification chamber passes through the filter screen and the through hole in sequence.

3. The rainwater and sewage interception and treatment device according to claim 2 is characterized in that: The main purification chamber is provided with an aeration area, a biological filter area and an aquatic plant area from bottom to top; the biological filter area is provided with biological filter material, the aquatic plant area is provided with a biological floating bed, and aquatic plants are planted on the biological floating bed.

4. The rainwater and sewage interception and treatment device according to claim 3 is characterized in that: One or more air supply pipes connected to an air compressor are arranged in the aeration area, and a plurality of aeration plates are connected to the air supply pipes.

5. The rainwater and sewage interception and treatment device according to claim 3 is characterized in that: A filter frame for carrying biological filter media is provided in the biological filter media area, and the outer side wall of the filter frame is in contact with the inner wall of the main purification chamber; a large number of holes are formed at the bottom of the filter media frame, and the aperture of the holes is smaller than the particle size of the biological filter media.

6. The rainwater and sewage interception and treatment device according to claim 1, characterized in that: A gabion cage is arranged in the slow filtration and re-purification chamber, and three layers of filler are sequentially filled in the gabion cage according to the water flow direction; the three layers of filler are respectively filled with fillers of different particle sizes and materials.

7. The rainwater and sewage interception and treatment device according to claim 6 is characterized in that: The solar panel on the top of the slow filtration and purification chamber is connected to a battery device, the solar panel is electrically connected to the battery, and the battery is electrically connected to the air compressor.

8. The rainwater and sewage interception and treatment device according to claim 1, characterized in that: A plurality of fixing rods are connected to the bottom of the shell, and the fixing rods are perpendicular to the bottom of the shell.

9. The rainwater and sewage interception and treatment device according to claim 2, characterized in that: A lifting bracket is provided in the primary interception chamber, and the lifting bracket comprises a planar frame parallel to the bottom wall of the primary interception chamber and a lifting rod vertically connected to the planar frame, and the filter is connected to the planar frame.

10. The rainwater and sewage interception and treatment device according to claim 9, characterized in that: A drainage hole is provided on the bulkhead of the primary interception chamber. The drainage hole is arranged below the filter screen and an openable closing gate is also arranged on the drainage hole.

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