CN209779837U - Urban road inlet for stom water high efficiency cuts dirty device - Google Patents

Abstract

The utility model relates to a high-efficiency sewage interception device for rainwater outlets on urban roads, which includes a collection well body and a water collection pipe; a rainwater grate is installed on the upper end of the collection well body, and a vertical flow sand sedimentation device is arranged in the collection well body, and the rainwater grate is a hanging basket type Structure, the rainwater grate is an upper and lower two-stage structure, and the vertical flow sedimentation device includes a reflective part, a sediment retention part, and an anti-sludge resuspension part arranged from top to bottom. It has a quadrangular pyramid structure, and the anti-sludge resuspension component has an inverted quadrangular truss structure. The utility model is an integrated device which combines the rainwater interception renovation technology and a vertical flow sand settling device, and realizes double interception of larger solid pollutants and silt and other particulate matter.

Description

A high-efficiency sewage interception device for urban road rainwater outlets

technical field

The utility model belongs to the technical field of energy saving and environmental protection, in particular to a high-efficiency sewage intercepting device for urban road rainwater outlets.

Background technique

The rainwater outlet is a facility for the pipeline drainage system to collect surface water. It is an auxiliary structure of the urban drainage system. It is mainly composed of water inlet grate, well body and branch pipes. Combined. Rainwater outlets are usually set at a certain distance in blocks, squares, street intersections and street gutters to collect rainwater on the ground to prevent rainwater from flooding roads and causing water accumulation in roads or low-lying areas to hinder traffic or damage roads. In the road drainage system, the rainwater outlet is not only the "throat" for the urban road rainwater pipe network to collect rainwater runoff, but also the main channel for non-point source pollutants to enter the water environment. A large amount of sediment generated by the washing of the customarily designed "high green land" around the road, together with some solid pollutants on the road surface, easily enter the drainage system through the rainwater outlet without any interception measures. In urban blocks, especially near restaurants, a large amount of leftovers, plastic bags and other domestic garbage are piled up near the rainwater outlet, and a large amount of leftover soup and soup containing oil, protein, starch, etc. are poured into the rainwater outlet and flow directly with the rainwater Water bodies such as urban rivers and lakes have caused serious pollution to urban water bodies. If the rainwater outlet is blocked due to the accumulation of garbage, once the heavy rain comes, the drainage and flood discharge function will be seriously affected, resulting in water accumulation on the road, which will seriously affect the travel and safety of residents. Therefore, controlling the garbage and pollutants entering the urban drainage pipe network from the source is one of the economical and effective means to reduce water pollution and urban waterlogging.

Traditional urban road drainage projects focus on the safety of road surface drainage, but as the bottleneck of urban rainwater pipe network collecting rainwater, the design of most stormwater outlets cannot effectively intercept pollutants entering the stormwater outlet. Moreover, blockage of pipes and gullies caused by poor management and man-made pollution of gullies during dry periods reduces the drainage capacity of the pipe network and puts great pressure on urban drainage. Reasonable design and construction of stormwater interception facilities can not only control runoff pollutants from the source of the pipe network, prevent soil erosion, but also prevent blockage of stormwater outlets, effectively alleviating urban waterlogging. For a long time, many countries and cities have been actively exploring and working hard to improve the structure and function of stormwater outlets. The current rainwater interception technologies mainly include sewage interception transformation of traditional stormwater outlets, integrated sewage interception outlets and temporary protection for stormwater interception. Among them, the traditional stormwater interception renovation technology and integrated sewage interception stormwater outlet are the main forms of stormwater interception technology at home and abroad. The stormwater interception retrofit technology refers to the technology that does not change the structure of the traditional stormwater outlet, but adds a sewage interception device to the existing stormwater outlet for the purpose of intercepting the pollutants in the stormwater outlet. The sewage interception transformation technology of stormwater outlets is low in cost, and is suitable for the sewage interception reconstruction of existing urban stormwater outlets and the sewage interception of newly built urban stormwater outlets. Although the stormwater interception renovation technology can effectively solve the problem of stormwater interception, this technology can only intercept larger garbage entering the stormwater outlet, and the removal of sediment and other particulate matter in stormwater runoff is limited by the traditional stormwater outlet structure. When the rainfall intensity is high, most of the sediment and other particles carrying nitrogen, phosphorus and other chemical substances will directly enter the urban water body with the rainwater pipe network, promote the growth of algae in the water body, and affect the water quality of the urban water body. When the flow rate of rainwater drops, sediment will settle and accumulate in the drainage pipe network, which will pollute the relatively clear rainwater in the later stage. Over time, it will lead to a decrease in the drainage system's water-through capacity, hindering the timely drainage of rainwater, and even blocking the rainwater outlet and pipes. Sand contains acid and other corrosive substances, which will also shorten the service life of drainage pipes. Therefore, the sediment and other particulate matter in stormwater runoff is also an important component of stormwater interception. The integrated sewage interception stormwater outlet technology is like the "sub-ring road" stormwater outlet in Ethiopia, but it is not suitable for the 1% slope of the pre-buried connection pipe of the stormwater inlet specified in the domestic regulations, and water will accumulate at the bottom of the sediment, making it difficult to clean the bottom. Long-term absence of rainfall may cause its water quality to deteriorate and emit foul odors.

In recent years, there have been many transformation technologies for the waste water interception hanging basket technology, such as filling filter materials around the sewage interception net (patent CN203741978 U), using double-layer sewage interception hanging baskets (patent CN204212253 U), etc. However, according to the structure of the existing gullies, the transformation of the conventional sewage intercepting hanging basket technology to the sewage intercepting hanging basket has the defects of poor drainage and insignificant interception effect on sediment and other particles, which cannot meet the requirements of flood control and mud retention in the gully. Double requirements for particulate matter such as sand.

Therefore, in order to solve the problem of accumulation of particulate pollutants in the gullies, an integrated device that combines the renovation technology of stormwater interception and vertical flow sedimentation devices is provided to achieve double interception of larger solid pollutants and particles such as sediment The high-efficiency sewage interception device for urban road rainwater outlets has important practical significance.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and to provide an integrated device that combines the rainwater interception renovation technology and the vertical flow sedimentation device, so as to realize the double separation of larger solid pollutants and silt and other particles. High-efficiency sewage interception device for intercepted urban road storm water outlet.

The utility model adopts the following technical solutions to realize:

A high-efficiency sewage interception device for urban road rainwater outlets, comprising a collection well body and a water collection pipe arranged on the side wall of the collection well body;

The collection well has a structure with an open upper end and a closed lower end, and a slag outlet is provided at the bottom of the collection well;

The upper end of the collection well body is equipped with a rainwater grate, the body of the collection well is provided with a vertical flow sand settling device, the rainwater grate is a hanging basket structure, and the side wall of the rainwater grate is uniformly provided with a metal grid to form a The overflow port of the hanging basket, and the rainwater grate has an upper and lower two-stage structure, a filter layer is laid on the lower part of the side wall and the bottom wall of the rainwater grate, and the vertical flow sand settling device includes reflective components arranged from top to bottom . A sediment retention component and an anti-sludge resuspension component, the reflection component has an inverted splayed structure, the sediment retention component has a quadrangular pyramid structure, and the anti-sludge resuspension component has an inverted quadrangular truss structure.

Preferably, the collection well body has a cubic structure with an open top and a closed bottom end, and the inner wall of the collection well body has a porous inner wall structure.

Further preferably, the reflective part includes symmetrically arranged first reflective plates and second reflective plates, the upper edges of the first reflective plates and the second reflective plates are respectively affixed to the inner wall of the collection well, and the first The inclination angle between the reflection plate, the second reflection plate and the collection well body is 30-60°.

Further preferably, the nozzle of the water collection pipe is located above the reflective part, the nozzle of the water collection pipe is installed on the side wall of the collection well, and the nozzle of the water collection pipe is connected to the first reflection plate in the reflection part , The distance between the second reflecting plates is 0.25-0.5m.

Further preferably, the sediment retention component is a square pyramid structure surrounded by four first side plates, and the anti-sludge resuspension component is an inverted square pyramid structure surrounded by four second side plates. The upper edge of the second side plate in the anti-sludge resuspension component is fixedly connected to the inner wall of the collection well, and the four corner ends of the lower part of the sediment retention component are respectively fixed to the inner wall of the second side plate through the support body .

Preferably, the filter layer is geotextile or nylon mesh.

Advantage and positive effect of the present utility model are:

1. This utility model is an integrated device that combines the sewage interception transformation technology of the rainwater outlet and the vertical flow sand settling device. Double interception, and then purify the quality of rainwater entering the rainwater pipe network, reducing the pollution of rainwater runoff to urban water bodies.

2. The collection well body in the utility model is easy to assemble, which is convenient for the maintenance, repair and replacement of the equipment in the later stage, and the bottom is provided with a slag discharge port, which is convenient for cleaning the sediment.

3. In this utility model, the water collection pipe is arranged above the vertical flow sand settling device, which can ensure that the rainwater directly enters the drainage system through the water collection pipe when the rainfall is large, so that the flood control function of the rainwater outlet will not be affected. When the water level in the collection well rises , The settled clear water will enter the drainage pipe network with the water collection pipe to reduce the sediment and other particles entering the pipe network system and entering the urban water body.

4. In this utility model, the rainwater grate installed on the upper end of the collection well body can intercept larger solid pollutants in the rainwater runoff, and play a preliminary role in intercepting the pollutants in the rainwater. The rainwater grate is designed as an upper and lower two-stage structure. While the interception efficiency of pollutants is guaranteed, the water passing capacity of the storm water outlet will not be affected, and its flood control function will not be affected.

5. In the utility model, the vertical flow desilting device can realize the efficient interception of silt and other particulate matter, thereby playing the role of mud-water separation, and has a short residence time and a small footprint, which is suitable for popularization and use at the bottom of the rainwater outlet.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is a schematic diagram of the front view structure of the collection well body;

FIG. 3 is a schematic diagram of the longitudinal section structure of FIG. 2 .

In the figure: 1. Rainwater grate, 2. Hanging basket overflow, 3. Filter layer, 4. Reflecting part, 41. First reflecting plate, 42. Second reflecting plate, 5. Sediment retention part, 6. Anti-pollution Mud resuspension parts, 7. Water collection pipe, 8. Collection well body, 9. Slag discharge port.

Detailed ways

The technical solutions of the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1-3, a high-efficiency sewage interception device for urban road rainwater outlets includes a collection well body and a water collection pipe 7 arranged on the side wall of the collection well body; the collection well body 8 has an open upper end and a closed lower end structure, The bottom of the collection well 8 is provided with a slag outlet 9; the upper end of the collection well 10 is equipped with a rainwater grate 1, and the vertical flow sand settling device is provided in the collection well 10, and the rainwater grate 1 is Hanging basket structure, the side wall of the rainwater grate 1 is evenly opened with a metal grid to form the hanging basket overflow 2, and the rainwater grate 1 is a two-stage structure, the lower part of the side wall of the rainwater grate 1 and A filter layer 3 is laid on the bottom wall, and the vertical flow desilting device includes a reflective part 4, a sediment retention part 5, and an anti-sludge resuspension part 6 arranged from top to bottom, and the reflective part 4 is in an inverted splayed shape structure, the sediment retaining part 5 has a quadrangular pyramid structure, and the anti-sludge resuspension part 6 has an inverted quadrangular truss structure.

Embodiment: The utility model is an integrated device that combines the sewage interception transformation technology of the rainwater outlet with the vertical flow sand settling device, aiming at efficiently intercepting large pollutants and small solid particles without affecting the flood control function of the rainwater outlet The role of pollutants can purify the quality of rainwater entering the rainwater pipe network and reduce the pollution of rainwater runoff to urban water bodies. The utility model includes a collection well body. When in use, the collection well body 8 is installed below the ground, and rainwater, pollutants, etc. can flow downward from the upper opening of the collection well body 8 into the collection well body. There is a water collection pipe 7, which is arranged above the vertical flow sand settling device, which can ensure that the rainwater directly enters the drainage system through the water collection pipe 7 when the rainfall is large, so that the flood control function of the rainwater outlet will not be affected; the upper end of the collection well body 8 A rainwater grate 1 is installed, and a vertical flow sand settling device is arranged in the collection well body 8. Through the effect of the rainwater grate 1, larger solid pollutants in the rainwater runoff can be intercepted, and the pollutants in the rainwater are initially retained, and then Before the rainwater enters the pipe network system, the sediment and other particles in the rainwater runoff are intercepted by the vertical flow sedimentation device. As the amount of rainwater collected on the ground increases, the water level in the collection well rises, and the settled clean water will enter the drainage pipe with the water collection pipe 7 The net reduces the sediment and other particulate matter that enters the pipe network system and enters the urban water body. Among them, the rainwater grate 1 is a hanging basket structure, and the side wall of the rainwater grate 1 is uniformly opened with a metal grid to form the overflow port 2 of the hanging basket, which can play a role in water seepage. The rainwater grate 1 can intercept coarse solid dirt, and the overflow port of the hanging basket 2. It can prevent the rainwater grate 1 from clogging and reduce the flow capacity; in order to ensure the sewage interception effect, especially the solid matter washed in the initial rainwater can be intercepted, and the rainwater grate 1 will not be drained smoothly during heavy rain, and the rainwater can be drained The grate 1 is designed as an upper and lower two-stage structure. The lower part of the side wall and the bottom wall of the rainwater grate 1 are covered with a filter layer 3. The setting of the filter layer 3 ensures its strong water permeability under the premise of intercepting small pollutants. In this device, the upper and lower parts of the rainwater grate 1 are designed with different specifications, and the vertical flow sedimentation device in the middle is arranged under the nozzle of the water collection pipe 7, which ensures the water passing capacity of the rainwater outlet while improving the interception efficiency of pollutants , does not affect its flood control function; the central vertical flow desilting device can achieve high-efficiency interception of sediment and other particulate matter, and has a short residence time and a small footprint, which is suitable for popularization and use at the bottom of the storm water outlet. The unique design avoids the accumulation of water at the bottom of the rainwater outlet, and is convenient for later disassembly and cleaning. In addition, the collection well body in the device is convenient for later maintenance and replacement of equipment, and the bottom of the collection well body is provided with a slagging outlet 9 to facilitate cleaning of sediment deposited in the collection well body.

The vertical flow sand settling device includes a reflection part 4, a sediment retention part 5, and an anti-sludge resuspension part 6 arranged from top to bottom, wherein the reflection part 4 has an inverted figure-eight structure, and the sediment retention part 5 has a quadrangular pyramid structure , the anti-sludge resuspension part 6 is an inverted quadrangular platform structure, and the reflection part 4 is arranged under the water collection pipe 7, and the reflection plate in the reflection part 4 can reflect the water in the water collection pipe or the rainwater flowing down from the rainwater grate , not only can reduce the impact energy of rainwater, but also facilitate the sludge to sink along the gravity of the reflection plate, and then achieve the effect of preliminary separation of mud and water. The bottom of the reflection part 4 is provided with a sediment retention part 5, and the mud-water mixture flowing down through the reflection part 4 is downward. After passing through the sediment retention unit 5, the sediment retention unit 5 has a square pyramid structure, which can not only play the role of diversion but also prevent the sediment from flowing upwards. The anti-sludge resuspension device is installed under the sediment retention unit 5. 6. The device is an inverted quadrangular truss structure, and the sediment deposited by the sediment retention unit 5 can flow into the anti-sludge re-suspension unit 6 through the gap between the sediment retention unit 5 and the anti-sludge re-suspension unit 6 below, and enter the bottom of the collection well body to facilitate the discharge of sludge through the slag outlet in the later stage. The vertical flow sedimentation device can realize the separation of mud and water. It is difficult to float up to the mouth of the water collection port 7 under the obstruction of the anti-sludge resuspension component 6, and the settled clear water will enter the drainage pipe network with the water collection pipe 7 to reduce the sediment and other particles entering the pipe network system into the urban water body, So as to play the role of mud and water separation.

The high-efficiency sewage interception device of this device can use the rainwater interception hanging basket technology to intercept large pollutants in the rainwater runoff under the premise of ensuring that the rainwater can collect ground rainwater quickly and effectively, and set up a vertical flow at the lower part of the rainwater to settle sand The device can achieve the functions of sand settling and rainwater penetration, and realize the double interception of large solid pollutants and sediment and other particles. Under the combined action of the rainwater grate 1 and the vertical flow sand settling device, it can not only effectively intercept large solids in the rainwater runoff Pollutants can also remove small particle size pollutants in the runoff, reduce the sediment and other particles entering the pipe network system and enter the urban water body, and reduce the pressure of the rainwater pipe network system. The device is easy to install, easy to clean and maintain, and does not affect the flood control function of the rainwater outlet.

Furthermore, it can also be considered in the present invention that the collection well body 8 has a cubic structure with an open top and a closed bottom end, and the inner wall of the collection well body 8 has a porous inner wall structure. The device is convenient for later maintenance, replacement and cleaning of the equipment. The inner wall of the collection well body 8 is made of porous adsorptive material, and the pollutants trapped in the pores can be effectively decomposed and removed by microorganisms. It should be noted that the structure of the collection well body 8 can be, but not limited to, a cubic structure, and structural types such as columnar or prismatic shapes can also be considered. Wait to be sure.

Furthermore, it can also be considered in the utility model that the reflective member 4 includes a first reflective plate 41 and a second reflective plate 42 arranged symmetrically, and the upper surfaces of the first reflective plate 41 and the second reflective plate 42 are The edges are fixedly connected to the inner wall of the collection well body 8, and the inclination angle between the first reflection plate 41, the second reflection plate 42 and the collection well body 8 is 30-60°. The reflective part 4 is located below the water collection pipe 7, and the first reflector 41 and the second reflector 42 in the reflective part 4 can reflect the water in the water collection pipe or the rainwater flowing down from the opening of the collection well body, which can not only reduce the Rainwater impacts energy, and facilitates the sludge to sink along the reflector, and then achieves the effect of initial separation of mud and water.

Furthermore, it can also be considered in the present utility model that the mouth of the water collection pipe 7 is located above the reflector 4, and the mouth of the water collection pipe 7 is installed on the side wall of the collection well body 8, and the The distance between the mouth of the water collection pipe 7 and the first reflector 41 and the second reflector 42 in the reflector 4 is 0.25-0.5m. The mouth of the water collection pipe 7 is located above the reflector 4. When the rainfall is large, it can ensure that the rainwater directly enters the drainage system through the water collection pipe 7, so that the flood control function of the rainwater outlet will not be affected. When the rainfall is small, it will collect with the ground rainwater As the amount increases, the water level in the collection well rises, and the clear water deposited by the vertical flow desilting device will also enter the drainage pipe network through the water receiving port 7.

Furthermore, it can also be considered in the utility model that the sediment retaining part 5 is a quadrangular pyramid structure surrounded by four first side plates, and the anti-sludge resuspension part 6 is four second side plates. An inverted quadrangular platform structure surrounded by plates, the upper edge of the second side plate in the anti-sludge resuspension component 6 is fixedly connected to the inner wall of the collection well body 8, and the four corners of the lower part of the sediment retention component 5 The ends are respectively fixedly connected to the inner wall of the second side plate through the support body. The sediment retaining part 5 has a quadrangular pyramid structure and is surrounded by four first side plates. The four first side plates can guide the rainwater flowing down from the reflective part downwards, and its lower part is a hollow structure. It can prevent the sediment from flowing upwards. The four corner ends of the lower part of the sediment retaining part 5 are fixedly connected to the inner wall of the second side plate through the support body, and the sediment retaining part 5 can be connected to the reverse side through the support body. The sludge resuspension part 6 is assembled in one body, and the sediment can flow into below the anti-sludge resuspension device 6 through the gap between the sediment retention part 5 and the anti-sludge re-suspension device 6, and the downstream from the sediment retention part 5 The muddy water can flow into below the anti-sludge re-suspension device 6 through the gap between the sediment retaining part 5 and the anti-sludge re-suspension device 6, and the anti-sludge re-suspension device 6 is an inverted square surrounded by four second side plates The platform structure can prevent the sediment below it from flowing upwards, that is, when the water level in the well body rises, the sludge at the bottom of the well is difficult to float up to the water receiving port 7 under the obstruction of the sediment retention component 5 and the anti-sludge resuspension component 6 At the mouth of the pipe, most of the sludge is deposited on the bottom of the well body, which plays the role of mud-water separation.

Furthermore, it can also be considered in the present utility model that the filter layer 3 is a geotextile or a nylon mesh. The side wall of the rainwater grate 1 is evenly provided with a metal grid to form the overflow port 2 of the hanging basket. The lower part of the side wall and the bottom wall of the rainwater grate 1 are covered with a filter layer 3. The design specifications of the upper and lower parts of the rainwater grate 1 can be used according to the location. Solid carrying matter and rainwater runoff intensity, etc., the water around the collection well body can penetrate into the well body through the hanging basket overflow port 2, and the metal grid gap on the rainwater grate 1 should not be too small or too sparse, there must be enough overflow hole, to avoid affecting the water passing capacity during heavy rainfall, and the filter layer 3 in the lower part of the rainwater grate 1 and the bottom can be but not limited to geotextile, or nylon net, or special woven bag, which can be used according to different conditions in various places , specific water quality objects and requirements to develop, design or select suitable materials. The filter layer 3 is used to intercept larger solid debris and some fine pollutants, sediment and other solid pollutants in the rainwater runoff. It should be noted that the filter The gap in layer 3 should not be too small to prevent clogging and affect its water permeability.

In summary, the utility model provides an integrated device that combines the rainwater interception renovation technology and the vertical flow sand settling device to realize the dual interception of larger solid pollutants and sediment and other particles of urban road rainwater. High-efficiency sewage interception device.

Claims (6)

1. A high-efficiency sewage interception device for urban road rainwater outlets, comprising a collection well body (8) and a water collection pipe (7) arranged on the side wall of the collection well body, characterized in that: The collection well (8) has a structure with an open upper end and a closed lower end, and a slagging outlet (9) is provided at the bottom of the collection well (8); A rainwater grate (1) is installed on the upper end of the collection well (8), and a vertical flow sand settling device is installed inside the collection well (8). The rainwater grate (1) is a hanging basket structure, and the The side wall of the rainwater grate (1) is evenly provided with a metal grid to form the overflow port (2) of the hanging basket, and the rainwater grate (1) has a two-stage structure, the lower part of the side wall of the rainwater grate (1) And a filter layer (3) is laid on the bottom wall, and the vertical flow desilting device includes reflective components (4), sediment retention components (5), anti-sludge resuspension components (6) arranged from top to bottom, The reflecting part (4) has an inverted splayed structure, the sediment retention part (5) has a quadrangular pyramid structure, and the anti-sludge resuspension part (6) has an inverted quadrangular truss structure. 2. A high-efficiency sewage interception device for urban road rainwater outlets according to claim 1, characterized in that: the collection well (8) has a cubic structure with an open upper part and a closed lower end, and the collection well (8) The inner wall has a porous inner wall structure. 3. A high-efficiency sewage interception device for urban road gullies according to claim 1 or 2, characterized in that: the reflective member (4) includes symmetrically arranged first reflective plates (41), second reflective plates ( 42), the upper edges of the first reflection plate (41) and the second reflection plate (42) are fixedly connected to the inner wall of the collection well (8) respectively, the first reflection plate (41), the second reflection plate The inclination angle between (42) and the collection well body (8) is 30-60°. 4. A high-efficiency sewage interception device for urban road rainwater outlets according to claim 3, characterized in that: the mouth of the water collecting pipe (7) is located above the reflecting part (4), and the water collecting pipe (7) The nozzle of the pipe is installed on the side wall of the collection well (8), and the nozzle of the water collection pipe (7) is connected to the first reflector (41) and the second reflector (42) in the reflector (4). The distance between them is 0.25-0.5m. 5. A high-efficiency sewage interception device for urban road rainwater outlets according to claim 4, characterized in that: the sediment retention component (5) is a quadrangular pyramid structure surrounded by four first side plates, and the reverse The sludge resuspension component (6) is an inverted quadrangular platform structure surrounded by four second side plates. The inner wall is fixedly connected, and the four corner ends of the lower part of the sediment retention component (5) are respectively fixedly connected to the inner wall of the second side plate through the support body. 6. The high-efficiency sewage interception device for urban road storm water outlets according to claim 1, characterized in that: the filter layer (3) is geotextile or nylon mesh.